RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
DDaddy - You, sir, are showing your age. And recklessly demonstrating in public the fruits of a proper education. How DARE you act smart in public? Didn't you know that sort of thing is frowned upon in modern society? We're all supposed to be racing towards the bottom; pandering to the lowest common denominator. For SHAME, SIR! ;) Also, you've exposed one of my greatest nerd crushes ever since I was about 12 and discovered this story while researching the German Army's fascination with suborbital artillery (The Paris Guns). :p mnem *Brazenly geekoid*
Posted on: 5/18/2013 10:35 AM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11515204

RE: HK Heads-Up... FRSky Telemetry Modules back in stock!
Thanks for the response guys; and thanks coriolan for the link/heads-up to Aloft. They're out of the DJT module and don't appear to stock the VD5M, but they do offer Prority Mail shipping and didn't tack on a service charge for the small order I trial-ed out. Excellent! I'll be looking there for additional bits! mnem Well, I'll be doggied...
Posted on: 5/16/2013 11:04 PM by Author "mnemennth" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11513908

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
ORIGINAL: mnemennth ORIGINAL: pushinoldrc Reply: mnemennth These are swappable between my 9X & 9XR, and my 9X has the telemetry mod & firmware which allows me to see the telemetry data right on the TX LCD screen. I'll probably do the same mods on my 9XR once I have the module built. I would like to know how well that works. Fuel / battery data would be very usefull for my field
Posted on: 5/16/2013 12:14 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11513399

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: pushinoldrc [quote]ORIGINAL: mnemennth I dunno who else in here tinkers with the FRSky Telemetry-capable radio gear, but I figured I'd pass this along here as I have elsewhere: HK Heads-Up... FRSky Telemetry Modules back in stock! That pretty much covers it... those of us who've been waiting for the FRSky DIY & JR-Compatible modules - they're in stock again
Posted on: 5/15/2013 11:14 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11512871

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[EDIT] I just got an eMail from HeliDirect letting me know about this sale; I dunno if it's really as good a deal as they make it sound, since I don't know what the street price on this kit is. But I know there are a number of 500+ class fliers in here, and here's a genuine Align 500E Combo Kit for under $400: http://helidirect.com/align-t-rex-500e-super-combo-kx017014-p-23216.hdx?trk_msg=TOFKL05D1O441CC7CATBM9KK9G&trk_contact=ANGQBRFVS5CR2PEL0FT9D7OMR4&utm_source=Listrak&utm_medium=Email&utm_term=http%3a%2f%2fhelidirect.com%2falign-t-rex-500e-super-combo-kx017014-p-23216.hdx&utm_campaign=2013+Monthly+Sends&utm_content=HDDEALALERT-515 [/EDIT] Also, I dunno who else in here tinkers with the FRSky Telemetry-capable radio gear, but I figured I'd pass this along here as I have elsewhere: HK Heads-Up... FRSky Telemetry Modules back in stock! That pretty much covers it... those of us who've been waiting for the FRSky DIY & JR-Compatible modules - they're in stock again at HobbyKing & showing 10+ at the moment; who knows how many they actually have. Maybe 100, maybe 12. mnem Good hunting!
Posted on: 5/15/2013 12:55 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11512400

HK Heads-Up... FRSky Telemetry Modules back in stock!
I dunno who else in here tinkers with the FRSky Telemetry-capable radio gear, but I figured I'd pass this along here as I have elsewhere: Those of us who've been waiting for the FRSky DIY & JR-Compatible modules - they're in stock again at HobbyKing & showing 10+ at the moment; who knows how many they actually have. Maybe 100, maybe 12. mnem Good hunting!
Posted on: 5/15/2013 12:04 PM by Author "mnemennth" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11512407

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay Finished my new Tarot 450 PRO last night, no blade spool and rattle test all done. We've had no rain for about 2 months and today it's pissing down. [/quote] Good for you, man. Here, we've been waiting 6 months for a real rain. :( mnem *And then there were 7*
Posted on: 9/17/2012 8:45 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11231908

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ingleburn(SNIP) As for HK postage, always seem to have good luck with singapore post or hong kong post but forget about swiss post. I could row there and back quicker. [/quote] I've discovered that as well; if I order just batteries it always seems to come Swiss Post. I usually have it in my hand before it ever even shows as being in the US. If I order a big box it usually come Hong Kong post; those you can track a bit better, and at least you usually get to see when it hits US soil. I've wondered myself if it couldn't get here quicker on a boat straight across the Pacific; the problem is not the boats themselves I suppose, but rather the amount of time spent in port getting loaded & unloaded. On a related note; it would appear as if HK wants me to show them some love in the form of a fresh order; they actually sent me a PAPER catalog all the way from Hong Kong! It is nice, actually, to see their most popular stuff all laid out in sequentiual order. Makes it easier to get a handle on what they have. Also, I saw at least a dozen things I never knew they carried, such as Stihrling engines, vector thrust boat motors, anemometers, airbrushes & genuine Futaba radios! It looks like they've knocked a few dollars off their economy line radios, BTW; now might be a good time to buy if you're thinking about it. Mine appears to be issue #2 - anybelly else here received one yet? mnem *Looking for a drool bucket*
Posted on: 9/11/2012 4:26 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11225487

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: Ddaddy Ok, I need serious help....will this addiction ever end?! Just ordered Fatshark Predator RTF FPV...[:D] [:o] [8|] [X(] [&:] [:@] I'm so confused...please don't tell my wife! Ken [/quote] Kewlies! Let us know what you think of the resolution, or better yet, make some recordings so we can see what you see. Everybody is talking about 720P video, but that's like 5 times the bandwidth of VGA. mnem *Dozer-dozing*
Posted on: 9/9/2012 10:07 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11223358

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
The HK 2218 series are an EXCELLENT motor for the money; I've got 3 of them; 2 in 3200K and 1 in 3550K flavors. All are absolute beasts, as you say (well, once they're balanced); but they run nice & cool and are much more resistant to overloading by excessive pitch than their smaller profile counterparts. I'm certain the oversized magnet structure and increased rotating mass helps quite a bit; I've been thinking about going HV when I build my HDX450, and I think the 1860 would be the bomb with a 4S-5S pack. As for the MCPx; THAT is how pretty much EVERY flight with my Genius CP has been. ;) However, I've discovered after a LOT of research that the issue is likely a combination of firmware and a bad MEMS module on my mainboard. This, of course, long after any applicable warranty, and long after pretty much totaling the heli trying to get it dialed in. Right now it would cost less to buy a new BNF model than to repair it due to the unconscionably expensive mainboard; I'm thinking about picking up a used MCPx mainboard and FrankenHacking it in there. We'll see; gotta get caught up on a mess of bills first. mnem *Resisting the urge*
Posted on: 9/8/2012 11:11 AM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11221859

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay [quote]ORIGINAL: Kozzy_98 Hey guys, I have a small issue to which I am absolutely perplexed! I have a HK401b Cyro and a HXT900 servo for the tail. When I give right rudder, it piros left and vice versa. If I flip the Direction tab, it piros out of control because it is compensating in the wrong direction... [/quote] Reverse the rudder channel direction in your tx. Jonesy [/quote] You know, for the longest time I had all mine set up like that, because I instinctively "flew the tail" and it just seemed the natural way to set it up. It wasn't until I bought my first RTF that I realized I had it bass-ackwards. [IMG]http://i1183.photobucket.com/albums/x462/mnemennth/facepalm_smiley.gif[/IMG] mnem "mumblethatandaboutamillionotherthingsmumble..." "What was that honey? I can't hear you." "NUHH-THING!!!"
Posted on: 9/7/2012 8:59 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11221412

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay Another new heli from blade. The Nano CP X. Smaller than mcpx but runs same motors apparently. Look like a neat bird for inside. http://www.bladehelis.com/Products/Default.aspx?ProdId=BLH3300 (SNIP for brevity's sake) [/quote] Mmmhmm... This is looking an awful lot like my 4Ch Xieda 9958's design; looks like it uses the same landing gear and similar chassis. It even has the same horrible, horrible linear servos. Ughh. I wonder if they contracted to manufacture it? Manual is here, with exploded view: http://www.bladehelis.com/ProdInfo/Files/BLH3300-Manual.pdf mnem Bent, not broken.
Posted on: 9/6/2012 6:56 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11220174

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: Edmund2 Mnem, where did you get Kakked in the English vocabularly? Great version of an Afrikaans word (my language) and reading your sentence the meaning (end result) is exactly the same when we ad the "ked" to it. Implication being not good quality and it got busted. (SNIP) Edmund [/quote] Hmmm... while it does appear that what is now the most popular usage of that slang is derived from the Africaans word for dung, my exposure to the term as a youth in 1980s Pittsburgh, PA was as an onomatopoeia for the sound a cat makes when coughing up something dead or otherwise nasty. However, I do know that I've seen the word "kakk" used by several Brit friends online, and it was always in similar context; I always assumed they meant the same thing I did, but it is more likely it was adapted from the Africaans. [quote]ORIGINAL: ahamay [quote]ORIGINAL: Kozzy_98 Hey guys, having a bit of a problem as far as my MT kit goes... Just spooled up the motor to check if it was spinning in the right direction, and something didn't sound right. It sounded as if something was restricting the movement of the motor and the motor RPMs were going up, then down even though my stick was in the same position. So I checked the belt tension, all good. Meshing between the pinion and main gear was good. However I am not sure about the meshing of the tail drive gear and tail belt gear. This seems to be the problem because when I spin the head in the opposite direction, it is not smooth unlike both of my GT frames. A tad frustrating, but oh well... [/quote] I'll throw a few suggestions...something may help. - Watch out for soft start on ESC...this can be a little confusting if your giving throttle and nothings happening then it revs up. - Take your main gear off and spool the motor to check to see if it's free and working as per normal. - Check you have not overtigtened the main gear bolt as this will warp your tail drive gear (autorotation gear) and it will have a tight spot with your tail belt gear. You may just have a warped gear which is highly likely. Sounds like the problem is the mesh between the autorotation gear and the tail drive gear. These gears tend to be warped and will wobble a bit but still maintain good contact with the tail gear. It's when it's warped the othe way (ie oval instead of round) that you get a tight spot. Hope that helps Jonesy [/quote] Another thing to be very careful of is the one-way bearing; especially on these econo-kits, they cheap out big time on 'em. If you take your auto drive gear off the hub, then put the hub on a fresh bearing sleeve, then either chuck that up in a prop balancer or spin it on a mainshaft in an empty chassis, you will often find that the hub is crooked as hell. Another thing they'll do is run true in ONE spot on the sleeve; once you let it freewheel to a new spot, it'll be crooked again. I always thought it was poor manufacturing on the hubs, until I got the Align bearing press (K10273) and some Align one-way bearings (HS1229). EVERY ONE of those hubs ran true with the Align one-way bearings. If you can't be arsed to press a one-way bearing, genuine Align hubs (HS1228) with the bearing installed are only $12-ish. Get yourself one or two and some new Align sleeves (HZ026) and go through all your "warped" gears again; you'll be amazed at how many run true. The one-way bearing will make the Auto gear run crooked; a poorly made sleeve can make both gears run crooked. Also, it is VERY easy to overtighten the jeezus bolt that runs through the main gear; if you do, you deform the main gear and the sleeve, causing these problems as well. This bearing/hub is one of the biggest causes of harmonic vibration in these little birds; especially if you get a high-frequency vibration at a specific RPM regardless of blade pitch, look here and at your motor's balancing. I know some models of FBL units have data logging, and that they can monitor vibration levels in the heli. Can the BeastX and clone do this? mnem I'm bearing the load okay.
Posted on: 9/5/2012 10:41 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11219150

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay [quote]ORIGINAL: mnemennth [quote]ORIGINAL: ahamay They probably send hobbyking all the servos that didn't meet the claimed speed rating. I notice hobby king are good at rounding.[/quote] I suspected (and mentioned) the very same thing when I first saw the specs... [quote]ORIGINAL: mnemennth Hoookay... I've looked and looked and looked and I can't find
Posted on: 8/31/2012 9:48 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11213237

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay They probably send hobbyking all the servos that didn't meet the claimed speed rating. I notice hobby king are good at rounding. [/quote] I suspected (and mentioned) the very same thing when I first saw the specs; but looking at HK's specs and the MKS specs, they are an accurate rounding to 2 decimal points from specs rated to 3 decimals. The difference between the two is statistically insignificant; I 'm wondering if HK did this to fit the specs into their catalog's filtering engine... maybe that field only has room for 2 decimal places. Anyways... After hearing about your success with this product, I'm definitely thinking (drooling) hard about them myself... mnem *wibble*
Posted on: 8/31/2012 8:14 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11213174

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
Hoookay... I've looked and looked and looked and I can't find 'em anywhere; I guess I don't know what the parts peoples call these things. What I'm looking for is a backing plate for the 9G servos; it looks sortof like this product, but it's made out of metal and the two center holes for the 9G servos have a 2mm thread. http://tarot-rc-heli.com/450-PRO-V2-CARBON-SERVO-TAIL-ROTOR-PLATE-HENGE They're used to eliminate the need to monkey-fart around with tiny nuts and needle-nose pliers on older-style T-Rex 450 clones that don't have the plastic inserts in the frame like the newer versions do. I had 2 sets of them that came with one of my Align T-Rex 450s; I've kept them all these years and used them on my HK-450GT. Now I can't find 'em, and I can't seem to find replacements either. ARGGH! Anybelly got any ideas? I hate to make 'em out of aluminum plate... mnem *Wasted on the young*
Posted on: 8/31/2012 8:03 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11213164

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay [quote]ORIGINAL: Kozzy_98 The tail servo will be that new TGY-306G servo from HK which looks to be an ablsolute ripper. What I have found with the new build is that the MT frame, the one where you need those servo mounting parts absolutely loves the HK939/929MG as the cyclic servos when the mod is performed on them. This works well for me as I have alot of 939/929MG servos and like 3 spare MT frames! [/quote] HK have just added a High Voltage version of that servo as well...something to watch out for..... there's two version to pick from now. TGY-306G-HV High Voltage Ultra Fast/High Torque MG Digital Alloy Cased Servo 3.7kg / .05sec / 21g [/quote] Ummm... yeah. It's a rebranded MKS DS92A; as I mentioned all the way back when: http://www.rcuniverse.com/forum/m_11198904/anchors_11199845/mpage_1/key_/anchor/tm.htm#11199845 And it's the servo I was referring to as a popular "Benchmark model" for cyclic way back when I was noob-meat and p!ssed in your Cheerios, Jonesy. ;) Quality-wise, they're competitive with anything short of megabuck robotics servos (which they also make) and at HK's prices, I've been drooling and imagining my half-built HDX450 with FBL and all MKS DS92A servos. Just wish I had either the direct-drive-belt kit or a TT kit for it. Even with this all HobbyMate FBL deal (Which I think ultimately beats even the Align 3G deal I was looking at hands-down): http://www.targethobby.com/hobbymate-fbl-helicopters-3axis-gyro-w-450-dfc-flybarless-roto-p-4162203.html and $89 for 4 servos, It'll still be $180-$200 with shipping... *wibble* [EDIT] Oh, and Bob - is THIS the 550 you were talking about on HK, or is the TT version brand new? http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=24687 Aside from the canopy looking cheesy even in the photos (which my experience with HK indicates is always an honest representation LOL) it is STOUT-LOOKING! At $140 it REALLY does seem like a steal... and then when you're done you've got all the electronics you need for a Goblin. *CACKLE* mnem No, no, no... must be good... baby needs yogurtzz & diaperzz....
Posted on: 8/31/2012 7:11 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11213123

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
Okay; I have a line on a used Align 3G FBL unit; it looks like a good deal but I understand they are older technology and I don't know if it does the mixing internally. Looking at the setup vids I've seen it appears pretty complex; am I better off getting one of the BeastX Clone units you guys have? Price is close to the BeastX clone. mnem *Fly-less*
Posted on: 8/31/2012 10:06 AM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11212692

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
Hi guys; I'm still alive. Now that the PsychoScreamingB!tch-@ssPOS... err, my Genius CP has kakked a elevator servo and I've worn out the motors for my V911 and broken all the tailbooms on my 9958s, I guess it's time to get back to a 450-class bird. I'm thinking about doing a rebuild of my HK-450GT; can't afford FBL right now but have new HXT900 servos & one of those LeadersHobby X450 motors that's running smooth as glass. I also have one of their GA-250 MEMS Gyros I haven't tried yet; any experience or advice on programming it, since it doesn't actually have any switches or pots on it? Or am I better off sticking with my Detrum GY48? It's either that or maybe try and straighten a driveshaft and rebuild a head for my EXI450Pro. Boy, I sure did miss the smell of warm bearings all that time away with the micros... mnem ...Not to mention fiberglas splinters and tailrotor love bites. ;)
Posted on: 8/31/2012 8:53 AM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11212614

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
* Pokes the forum with a stick * [IMG]http://i1183.photobucket.com/albums/x462/mnemennth/cricket.gif[/IMG] Hmmm... [IMG]http://i1183.photobucket.com/albums/x462/mnemennth/wavingdragon.gif[/IMG] Ummm... Heww-o-o-o-o? mnem *Goes home to mutter*
Posted on: 8/26/2012 3:48 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11206797

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay OK, here's a tip. Don't accidently short out the balance plug on your parallel charging board by holding down the board whilst you unplug batteries. It gives you a good belt, burns the heck out of your fingers and buggers up your balance board. [/quote] I love the smell of toasted PCB in the morning! Smells like... Victory! ;) Seriously, that looks eminantly repairable; in fact, I'll bet $1 that the ports on the left side of that injury are totally unaffected. A little solder, some strands of copper wire, lift the balance sockets off the PCB so you can get under them... easy-peasy. Take 30 min, tops. If you wanna make a perfessional-looking repair, trace a little CA over it all then spray CA accelerant to seal it. Once that dries, or you wipe it clean with alcohol, you can go over all of the repair with green Sharpie. Spiffy. On a flying-related note, I spent about 3 hours yesterday doodling around with my 9958 and my v911 4CH micros in the front yard; even managed a few honest moments of controlled-vector flying against a 5-7 MPH headwind. Then I tripped over a tree root as I was reaching down for my 9958 and stomped it flatter than a road toad. Size 13 shoe and 300 pounds of Polack arse don't leave much room for escape; the main PCB & canopy appear to have survived, but everything else is a jumbled mangle of plastic & wires. I MIGHT be able to salvage the servos & swash; we'll see once I get it apart. er. This considerably dampened my flying spirit for the rest of the day; I only have one battery for the V911 so my rhythm kinda got busted up. Onward & upward, mnem Been dere, dunnat, burned the shirt. While I was wearing it.
Posted on: 8/25/2012 7:01 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11205947

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: pushinoldrc Comments on YouTube [/quote]Comments on yer comments. And stuph. mnem I shall eat lasagna.
Posted on: 8/24/2012 12:19 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11204654

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: rikybob Happy B'day Jonesy! b [/quote] Hippo Bathday dude! May the wind be elsewhere and your batteries full! mnem Umm... you gonna eat all that cake?
Posted on: 8/24/2012 11:59 AM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11204633

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: Kozzy_98 Does anyone have any suggestions on a very efficient 450 motor that would give long run times? Something to learn hovers on, then I can swap it for a spare 2218 that I have. I heard that esky make a very efficient motor, but cannot recall the motor specifically... Long flight times is what I am after @ my stage.[/quote] I've been flogging a couple of these I got from the Miami warehouse a couple months ago for $8 ea (sold out now in both US warehouses); they're a solid motor once you balance 'em, but they DO need to be balanced. Or at least, both of mine did. Now, I'm running one on an el-cheapo 30A ESC and it never gets warm; I'd say the current draw is reasonably low. I need to hoe out some space on my outside bench and I'll try and come up with some stats for ya. https://www.leaderhobby.com/product.asp?ID=9394001225754 If ya don't have the patience or knack for balancing, or if you don't really need more motors (like I really did) ;) then I'm gonna agree with Jonesy - you're prolly better off spending yer money on a few extra packs. Did I mention the Turnigy Nano-Tech 3S/2200/25-50C packs are $10.19 ea on the swarm right now? LOL. mnem Zzzzt.
Posted on: 8/23/2012 10:48 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11204163

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ingleburn Anyone thought about using these. www.hobbyking.com/hobbyking/store/__25427__Turnigy_nano_tech_A_SPEC_2200mah_3S_65_130C_Lipo_Pack.html A serious battery but at a serious price. [/quote] Burn - I've been abusing...err, using 2 of the 3S/2200/25-50C NanoTechs for almost 2 years; sometimes brutally overloading with bad motor/pinion combos (and a shorted out motor/ESC from time to time), sometimes by letting them just sit for a couple months at a time. They STILL test out at rated capacity, which is approx 8-10% decrease from capacity after the first 10 cycles. All in all, I am astounded they could sell a pack like this for $12, even on the swarm. I am similarly pleased with the two Zippy packs I bought a year ago for $9, though they haven't held up like the Nano-Techs; they are a year younger and already down to 90-95% rated capacity. That said, I'm not certain any hobby flyer is going to push these A-Spec Nano-Techs to a point where they will live longer than a regular Nano-Tech simply due to age; therefore I don't know that I can justify spending even the $27.59 they're asking for these After Thumb-Twiddling, especially when the pack I bought for $12 is now $10.19 on the swarm. OTOH - Just look at the prices of any "Name-brand" pack on any of the big USA sites, which I'm 95% certain these new A-Spec packs are equal or superior to... maybe we HK junkies have gotten spoiled? Are we simply jaded? mnem More power. Yumm.
Posted on: 8/22/2012 9:43 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11202938

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
Sonuvacrap. Duplicate post; sorry guys. mnem It's kinda like déjà vu... kinda like déjà vu...
Posted on: 8/21/2012 9:08 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11201675

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ingleburn Just checked my head speed calculator and with that curve hover is roughly 2800 RPM. Maybe I need to be a bit higher. [/quote] I'd guess as much; most of the answers I got when I was first setting up recommended a headspeed of around 3000-3200 at 6ish degrees for hover; I remember with my first setup I was around 2600 at 8ish degrees and it just barely kept the tail going straight, and a bunch of wig-wagging anytime I touched the rudder. Running hottern'ell and really loaded up the tailrotor too. I'm still not exactly the best at programming the CCPM, so I'll let others offer their advice. On another note - I just got an eMail from HK on a wishlist item I signed up on when I first started my EXI450Pro build. They have the DLUX 40A ESC w/Datalogging back in stock at the USA warehouse; $20.29 after the usual thumb-twiddling period. It has a nice, compact footprint that I would have loved to try on my Pro, but it was OOS. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18922 Hope that helps someone in need of a decent ESC at a reasonable price. mnem *Now suffering from mini-micro-itis*
Posted on: 8/21/2012 9:06 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11201673

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
[quote]ORIGINAL: ahamay Has anyone tried these yet ? They look like an ideal rudder servo: http://www.hobbyking.com/hobbyking/store/__22687__TGY_306G_Ultra_Fast_High_Torque_MG_Digital_Alloy_Cased_Servo_3kg_06sec_21g.html [/quote] Jonesy - That looks suspiciously like the MKS DS95 I was drooling...err, looking over when RikeyBob first got me thinking about the FBL thing... http://www.mksservosusa.com/product.php?productid=5&cat=6&page=1 Specs are suspiciously similar too. I wonder if it's a clone, a rebrand, or if HK is just buying the ones that don't quite meet MKS standards. I see it comes up at $21.77 if I wait... *wibble* [EDIT] Uh-Huh. And here's the rebranded MKS DS92A, which are highly recommended as FBL Cyclic Servos... $22.23 if I wait. *Wibble-ibble* http://www.hobbyking.com/hobbyking/store/__24764__TGY_306G_HV_High_Voltage_Ultra_Fast_High_Torque_MG_Digital_Alloy_Cased_Servo_3_7kg_05sec_21g.html And here are the rebranded wing servos: http://www.hobbyking.com/hobbyking/store/__23340__Turnigy_TGY_777MG_Alloy_Case_Digital_Slim_Wing_Servo_Metal_Gear_5_5kg_10sec_23g.html http://www.hobbyking.com/hobbyking/store/__23341__Turnigy_TGY_778MG_Alloy_Case_Digital_Slim_Wing_Servo_Metal_Gear_5_5kg_10sec_23g.html Good thing my credit cards are already maxxed out; I'd be looking at a FBL rebuild on my HDX450. And maybe a new scratch-built EDF Jet with gyro too... [quote]ORIGINAL: Flying Fiz Hi Jonsey, The new 450 project sounds good. I can recommend this servo tester; http://www.hobbyking.com/hobbyking/store/__17047__Turnigy_Digital_Anolog_Servo_Tester_.html (SNIP) best to all Phil [/quote] Phil - Have you used the Speed Test function on that unit? How does it monitor the arm motion to verify actual speed? Hmmm... I wonder if it monitors current draw; that would at least tell it when the servo stops driving the motor because it THINKS it has arrived at 60°. That doesn't necessarily mean it actually HAS traveled that far or that fast though... [EDIT] [quote]ORIGINAL: ingleburn You got me thinking thats for sure. The new tail rotor and grips didnt fix the problem as it was the same today after another 3 flights. Its really protesting doing right turns. Checked the belt tension and its fine, no slipping at all. So that leaves me with your other suggestions. I have a new stock tail setup and will replace the cheap HK bearings with new ones and put the stock blades back on as well. If that doesnt fix it then looks like the DS420's arent up to the task and will try a 520. If thats the case Im stuck with 2 useless servos as the pro has one on it as well Or maybe Ill just maiden the pro and see if it suffers the same.[/quote] Hmmm... How's your headspeed? If you're running slightly high pitch/low headspeed, the servo's gonna be pushing full pitch on the tailrotor, but still unable to counter the mainblades. Sure, you'll be able to get it up in the air, but you won't be turning the tailrotor fast enough to do its job, even at max pitch. Also, when you say it's "protesting" you mean a lot of noise but it turns OK, or both not wanting to turn and making lots of noise? I'd also check my slider travel on the tail rotor, make sure you have your limits set correctly on the gyro so it's not bottoming out. This can make your servo complain, though I don't know that I believe it would be loud enough to hear over the rest of the heli... mnem *DANGER!!!* Engineer thinking *DANGER!!!*
Posted on: 8/20/2012 1:56 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11199845

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
I would recommend the Turnigy 760HV then; the HK one is single speed on the continuous sweep function and only good to 4.8V. The plastic printed sheet wrapper is pretty cheesy and it falls off all the time; it's only worth getting if you can pick it up on the swarm for $2 like I did. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11780 I got the Turnigy for a robotics project; It will run on up to 3S input for testing HV servos, plus it has variable continuous sweep cycle speed and 4 buffered signal outputs. Plus, its 1520uS/760uS switchable pulse width is ideal for testing higher end digital servos. Just remember it sends out the same voltage to the servos as you power it with, so don't plug a 3S pack into it and test 6V-rated servos; you'll let the magic smoke out of them. ;) mnem Tested. Rejected. Married.
Posted on: 8/19/2012 9:35 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11199312

RE: HK-450GT CCPM Alloy T-Rex compatible - Part III
Dangit - I broke the internet again. ;) Should I get some superglue? [quote]ORIGINAL: ingleburn Well yesterdays sim time did me the world of good. went out this morning and had a great time flying a lot smoother and getting further away. The dreaded right turn curse returned though when I started flying faster and you could hear the tail blades protesting. Time to sit down and check everything over again but I did notice a bit of slop between one grip and the hub so for a start Im going to replace it with this. www.rc711.com/shop/metal-tail-holder-set-for-alztrex-450-sport-p-4558.html Other than that might play around with the software and see if I can get it sorted out. One other thing I just thought of was Im using these tail blades. www.hobbyking.com/hobbyking/store/__14935__450_Size_Heli_White_Plastic_Tail_Blade_pair_.html Wonder if I should try a pair of the stock ones and see if it makes a difference. [/quote] burn- The tailrotor you linked to is a 450Pro style unit. The blades you linked to are also 450Pro; length from pin to tip should be +/- 63mm. These blades have approx 40% more surface area than the V1/V2 tapered style, most of it at the tip, and they aren't feathered. They are gonna howl like a SOB in comparison under heavy loading, because they're moving almost twice as much air. This can cause your belt to skip too, if you've gotten lazy about checking belt tension, which can also make an obnoxious racket. Don't ask how I learned THAT lesson. ;) If you're going to use the 450Pro tailrotor, make sure you use a tail servo rated for at least 1.8KG pull; between the larger blade area and the increased rotational massof the 450Pro tailrotor's gyro weights, that tail needs a lot more torque to push it around. Align used a DS520; it's rated 1.9/2.5KG at 4.8/6.0V. [EDIT] Looking at the photo, I can't say the CNC quality of that particular tailrotor looks any better than what I've gotten from LeadersHobby; they have a complete Pro tail for $4.99 here: https://www.leaderhobby.com/product.asp?ID=9394001220449 Unless you're set on that color it seems like a better deal, and they're both coming from China. Better hurry, though; only 2 left in stock. Myself, I'd just replace the bearings unless the rotor I had was already damaged. On a side note; did you see that Goblin-clone canopy/fuselage kit? http://www.rc711.com/shop/alzrc-devil-450-fast-fuselage-converter-kit-p-6590.html Good hunting, mnem I forgot.
Posted on: 8/19/2012 8:05 PM by Author "mnemennth" in the forum "T-Rex heli"
http://www.rcuniverse.com/forum/fb.asp?m=11199064