RE: CO2 extinguishers
redundant post ...
Posted on: 11/20/2009 3:35 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9267713

RE: CO2 extinguishers
redundant post ...
Posted on: 11/20/2009 3:34 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9267723

RE: CO2 extinguishers
Ah yes So many experts, so many opinions . . . There are many different halon compounds; only a few are used in fire extinguishers. The commonly used extinguishing agents are Halon 1011, Halon 1211, Halon 1202, Halon 1301, and Halon 2402. Halon 1301 is considered the least toxic, but also the least effective of the five for fire suppression. The US Army Corps of Engineers came up with the numbering system. First digit = # of carbon (C ) atoms in the molecule; Second digit = # of fluorine (F); Third digit = # of chlorine (Cl); Forth digit = # of bromine (Br); and Fifth digit = # of iodine (I). For example Halon 1301 has one carbon atom, three fluoride, no chlorine, one bromine, and no iodine. The key term associated with Halon is "toxicity" - thankfully since our use would NOT be in a closed area there's not much to worry about. However, in concentrated volumes there are issues: - Central Nervous System - Inhaling high concentrations of halon gas can cause dizziness, tingling in extremities, and in severe cases, unconsciousness. - Cardiovascular Effect - Exposure can cause cardiac sensitization. Cardiac sensitization occurs when a chemical causes an increased sensitivity of the heart to adrenaline producing sudden life-threatening, irregular heartbeats and even heart attack, in severe cases. Irritation of exposed skin and eyes may also result from exposures to Halon. [b]But here's the kicker: Stratospheric ozone is depleted by halons and other ozone-depleting substances . . . [doh] Bottom line? I'll use CO2 over Halon any day. [/b] Shop around for CO2 - our grand kids will thank you for it. [:)]
Posted on: 11/20/2009 1:00 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9267710

RE: BVM UB swept or stright fin?
If you can afford the UB, just step up and get both verticals. Like David, said, change 'em out every other flight. [:)] Use whatever "look" you like best and learn to fly it ...
Posted on: 9/29/2009 4:18 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9133617

RE: NiZn battery question
[quote]ORIGINAL: SinCityJets Okay, here's the deal on the new NiZn batteries. As many of you know, I stay up on the battery technology....mainly because I get bored. Anyway, they are a higher voltage, 1.6 as has been stated above. The voltage issue alone makes them not a good candidate for transmitter packs. 8 x 1.6 = 12.8 volts! . . . [/quote] From a non RC perspective, there [b]are[/b] some consumer electronics applications that use throwaway AA batteries (1.5V) where these cells could be ideal as their higher cell voltage might not be an issue.
Posted on: 8/7/2009 9:01 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8998619

RE: NiZn battery question
[quote]ORIGINAL: Vincent Mike, It says 1.6v 2500mwhzinc above the pic of the batts?? V.. [/quote] [sm=49_49.gif] Dude, that is Watts per hour, not Amperes ... I agree tho, Eneloops are better for our purposes anyway. Mike
Posted on: 8/7/2009 4:32 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8998061

RE: NiZn battery question
[quote]ORIGINAL: E.N.T. Remember the neloops are 2000mamps, not 1.6. ENT [/quote] Eneloops are 1.2V/cell; the NiZn cells are 1.6V - if I've done the math correctly the capacity of the NiZn cells is around 1500mAH compared to 2200 for the Eneloops ...
Posted on: 8/7/2009 2:20 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8997787

RE: balancing a full flying stab
[quote]ORIGINAL: Bob R2 1Eye, could you explain how you found that 27% is best? I've read that the neutral point (assuming a symmetric airfoil) is typically at 25% of MAC. I ask because I'm considering a flying stab for a future project. Thanks [/quote] I went back and double-checked my last example (an old Top Gun F-15 with tailerons only) and reverified: the stabs (tailerons) were
Posted on: 7/22/2009 2:13 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8954905

RE: balancing a full flying stab
[quote]ORIGINAL: HarryC Add weight in the root. Balance it at the pivot, not in front. [/quote] I didn't see anybody mention the need to determine MAC (mean aerodynamic chord) yet. I've found the "sweet spot" for the pivot (and therefore balance) point is around 27% relative to the MAC.
Posted on: 7/21/2009 11:41 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8951749

RE: Frosty's Dad story??
[quote]Frostbite wrote: <whack/snip> I was #8 of 10 kids and ... [/quote] Well, that explains a lot!! [sm=thumbs_up.gif] Meanwhile, back in Indian country, your dad is being vectored to another (probably very hot) location for another CSAR extraction attempt. Mike
Posted on: 6/28/2009 1:52 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8888322

RE: Need help on BAE Hawk Camo paint
Yep, those are the color nmbrs for the most popular camo' versions of the Hawk. There's a more prevalent desert camo' version as well. If you're looking for tail number-specific examples, you might try a Google search on "BAE Hawk fighter photos" and click on the Images hyperlink when the results come back. Aside from RAF birds, both the Saudis and ROK AFs have Hawks painted up in camo' schemes with the colors you mention. I did the ROKAF version of the Hawk (with an FD3 67 turbine) but I'll be darned if I can find any photos. [:o] Mike
Posted on: 6/26/2009 11:57 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8882818

RE: Ram 500 no start question
Dealing with the schizophrenic RAM 500s can be frustrating. When you command a start sequence, is there any displayed indication of turbine rotation (RPM indicated) after the starter motor engages?
Posted on: 6/23/2009 11:27 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8874006

RE: 2.4 GHz Weatronics, PPM or PCM?
[quote]ORIGINAL: HarryC David, Weatronic doesn't seem to want to sell its new equipment! The website hasn't been updated for about 9 months and doesn't tell us anything that we really want or need to know about the new kit. <snip> Are they going to be bothered to actually market the stuff properly and give us information? H [/quote] Agree. All this great stuff falls into the unobtanium category for now. Mike
Posted on: 6/17/2009 9:00 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8858846

RE: Concentric Pitot-Static Tube
[quote]Harley asked . . . Do you mean one like this? [/quote] Hi, Harley. Yup, I even have a couple of the BVM pitot tube mounts sitting in front of me. Do you have a photo you could email me of the breakout of the Ps and Pt outputs? Mike
Posted on: 6/16/2009 7:31 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8857508

RE: Concentric Pitot-Static Tube
Hello, John. Thanks for the reply. Yes, the first place I looked was the Eagletree product listing. The example you give is best suited for a wing leading edge placement (i.e., outside the wash of a propellor). The 90 deg. bend in yours is a bit tricky given the concentric nature and relationship of the pair of tubes. I'll revisit the source(s) you mention and see what I can come up with. Cheers. Mike
Posted on: 6/16/2009 2:01 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8856755

Concentric Pitot-Static Tube
The RCJI June/July 2006 issue had a review article by John Wright of the Eagletree "Seagull Pro' system. John's installation featured a right angle concentric pitot-static tube (like the big boys use) but I can't find any construction details to replicate what he fabricated. The RCJI review can be found at: www.eagletreesystems.com/reviews/rcjireview.pdf. Can anybody roll in with some help? Thanks. Mike
Posted on: 6/16/2009 12:54 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8856607

RE: A-10 By Grice
Roger, it appears Joe has found some edge reading style of air gauges - see photo - would you or anybody else know more about these? Description, where to obtain them ... ? Mike
Posted on: 6/13/2009 9:23 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8848767

RE: Futaba 72MHz Rcvr Antenna Length
Thanks for the confirmation - much appreciated. Mike
Posted on: 6/13/2009 8:58 AM by Author "1Eye" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8848740

Futaba 72MHz Rcvr Antenna Length
I need to replace/restore some Futaba R319 and R149 receiver 72MHz antennas that were cut to work with aftermarket base-loaded whip antennas. I don't have any other unmod'd rcvrs laying about to compare against. My recollection is that, independent of the freq band, these antennas are typically between 39 and 41 inches in length. Correct? Thanks for any replies. Mike
Posted on: 6/12/2009 7:05 PM by Author "1Eye" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8847560

RE: 9303 Delta Elevon Setup Hassle
Cool beans . . . that worked- thanks! I must've mixed up the channels. Now off to set the rates/deflection for pitch and roll.
Posted on: 6/8/2009 10:32 PM by Author "1Eye" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=8836997

9303 Delta Elevon Setup Hassle
OK, I've got a 9303 and I go directly to page A13 in the manual to set up the elevons on my Rookie II jet. The left and right wing elevon servos are plugged into the correct ports (ELEV and AILE, respectively) on the AR9000 receiver. I'm thinking this is a piece of cake... wrong. I had to reverse *both* the L and R elevons to obtain correct surface deflection for pitch control - but then, of course, the ailerons are now reversed from what they should be for correct roll control. I cannot for the life of me figure out how to get the correct deflection for roll. Dohhhh. What in the heck did I miss? Is there some other mix I need to program? Any clues would be appreciated. Mike
Posted on: 6/8/2009 9:53 PM by Author "1Eye" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=8836877

RE: BVM F-100D Grass Ops
[quote]Kelly Rohrbach commented . . . Thanks Tom for posting the photos of the old girl, it brings back great memories of both the build and Top Gun 05. I just talked to David Soufer last week and he is still flying jets and burning up the sky with the F4 that Grice built years ago. <snip> [/quote] That is one gorgeous Hun, Kelly; the good doctor certainly knows how to take care of it. Your work (and Grice's) makes me drool. The only way I'll get into one of those pro' built master pieces is to win PowerBall - I keep tryin' but . . . oh well Mike
Posted on: 6/8/2009 7:25 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8836435

RE: Electronic Spark Plug Ignition for $50!!
[quote]ORIGINAL: SinCityJets <snip ... Build it or don't, I don't really care. Just offering a reasonable cost effective way of doing it yourself. Chad [/quote] It's guys like you, Chad, in this hobby who look for other ways to skin the cat (oh, did I say that out loud?) that make it all interesting and challenging. Keep the faith. Mike
Posted on: 6/3/2009 8:26 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8821739

RE: BVM F-100 Maiden Flight Video
[quote]ORIGINAL: Patrick Frost Where can you buy those talking timers? [/quote] I bagged mine off of eBarf but this strikes me as a pretty good deal: www.valleyviewrc.com/Talking%20timer%20page.htm
Posted on: 6/2/2009 4:45 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8820299

RE: Sanyo Eneloop Battery Information
[quote] Someone had posted that these batteries do not like to be overcharged, so I don't think I would put them on a trickle charger and just leave them there, especially if they did not need much of a charge. Chad [/quote] Agree. The only reason to leave non Eneloop-flavored NiMH packs on trickle is/was because of the contentious self-discharge rate. Otherwise, we need to remember that the Eneloops want to be treated like NiMHs: (1) Charge at a reasonable rate, around 1/4C, and take your time doing it; (2) It takes about 3 cycles for them to develop their muscle tone. I've put together a couple of packs for my txrs and so far everybody is happy with no self-discharge to speak of.
Posted on: 5/27/2009 2:31 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8799726

RE: Jet build sub forum?
Sounds good to me but with one caveat: I would want it tightly wrapped and remain on-topic with no hijacking for individual entertainment purposes.
Posted on: 5/20/2009 1:44 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8784788

RE: Jomar Gear Door sequencer
[quote]... I'm old enough to remember the linkage tricks from when radios did not have travel adjust! - John. [/quote] What a concept: solve a problem with your brain rather than spending money/opening your wallet to get the latest gizmo. [8D] The Jomar sequencers work great; I've used them more than once. I especially like their small footprint.
Posted on: 4/28/2009 8:34 AM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8721979

RE: Carbon Fiber Rod Ends
Here's a link to several Hangar 9 items: [link=http://www.troybuiltmodels.com/ns/acce/hardware/linkages/]Titanium turnbuckles[/link]. I think these items can be ordered from Horizon Hobbies as well ... http://www.horizonhobby.com/ And c/f's idea [i]<cut a 1/4" ring and fit over rod near end and CA it to carbon for safe measure to keep from splliting>[/i] got my attention - what a great idea. Thanks! [8D]
Posted on: 3/19/2009 3:30 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8594654

RE: 2009 Missouri Valley Jet Scramble
[quote]Sid announced ... ...and it is hard for some of us to travel two weekends in a row.[/quote] Oh well, just get ahead of the curve on those honey-do's, Sid! I wanna try for both but we'll see how that works out - early June wx in eastern NE ought to be primo. Frostbite: Don't think I can help with your "dryness" issue - hope all is well with you and the family everything else considered. [sm=pirate.gif]
Posted on: 3/16/2009 4:08 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8584303

RE: 2009 Missouri Valley Jet Scramble
This stuff is even better ... (couldn't resist) [X(]
Posted on: 3/15/2009 2:38 PM by Author "1Eye" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8580553