RE: Andy Sheber Pitts s1s
[quote]ORIGINAL: acerc Got a few more of the stripes on tonight. I also somehow managed to fix that broke stringer late last night. So it is coming along ok. Not really caring much for using vinyl for the stripes, every little spec is highlighted. Oh well. [/quote] Don't worry Robert, it looks really impressive and will look even better once you get it in the air. I hope mine comes up half as good when i get around to building it.
Posted on: 6/15/2013 11:37 PM by Author "drac1" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11544569

RE: Lost passion for flying, now what?
[quote]ORIGINAL: devil505 I have looked at a different field but the only other field in my area has a 50 dollar joining fee, plus 75 dollar a year due fee. It is a very nice field with a great asphalt runway and pavilion but I cant afford all that. Just wish you didn't have to pay so much to fly. [/quote] Keep your stuff and visit the other field. Here in Australia we can fly for 3 days before having to join, to see if we like it. Maybe you can approach them to do something similar. Once you get flying with the other guys in a club atmosphere, i'm sure you will want to keep flying. $75/year, go for it. Annual fees at my club are $165.
Posted on: 6/9/2013 8:05 PM by Author "drac1" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11538576

RE: AMA Accepts Rules Change Proposal in Time for the NATS
[quote]ORIGINAL: smcharg [quote]ORIGINAL: drac1 ] Would motor/engine temp telemetry be considered an advantage? If for eg. an IC engine temperature climbed, it could indicate a lean mixture which would affect power. If in flight mixture is being used, then the mixture could be richened. [/quote] Telemetry concerning temperatures should not be considered illegal.  Temperatures should
Posted on: 6/7/2013 8:20 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11536186

RE: AMA Accepts Rules Change Proposal in Time for the NATS
[quote]ORIGINAL: kevenoco Good rule change. I'm always watching my back due to my Rx volt and motor temp telemetry. I can turn it off but I know there is no competitive advantage. My telemetry is to prevent crashing and it has safety advantages as well. Thanks for posting.  Keven [/quote] Would motor/engine temp telemetry be considered an advantage? If for eg. an IC engine temperature climbed, it could indicate a lean mixture which would affect power. If in flight mixture is being used, then the mixture could be richened.
Posted on: 6/4/2013 10:23 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11533761

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: 1QwkSport2.5r I have SuperTigre (Italy), Enya, K&B Sportsters, Thunder Tiger, Jett, and a dead Fox. The Jett gets 15% nitro 20% castor for now, when its broke in good ill drop the oil from 20% castor to 10% castor / 10% Synthetic. Bushed & lapped engines get 5% nitro 25% castor. All other aero engines get 5% nitro 20% castor. Most of my engines are European in design where nitro is rarely used so I use very little nitro in them. My 4th and final jug is for my RC cars. 20% nitro 12% oil (50/50 cas/syn). The bushed and lapped engines really run well on the high oil. The Jett.... Well, it swallows 6oz of fuel faster than any engine I've ever seen in 15 years of modeling. It rivals my ST S90 in fuel consumption, I couldn't imagine running 30% nitro. I'd blink and it'd be gone. Ill have to keep my eyes open on a new synthetic oil to use. Klotz smells nice in the bottle but that's about it. [/quote] YS four strokes love nitro.
Posted on: 6/4/2013 12:36 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11532675

RE: Please educate me on mixing fuel (methanol)
YS cdi's get 30% nitro, 9% Coolpower Purple, 1% castor and the rest methanol. ALL other engines get the same but with 20% total oil.
Posted on: 6/3/2013 7:50 PM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11532536

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: 1QwkSport2.5r I think people intentionally look for crap to argue about. I find myself getting defensive because some guys here are so bent about one way being the only way that my way has no creedance. Just because everyone else does it one way doesn't necessarily make it ''right''. I've learned a lot from this and made a few notes. Thank you. On a side tangent - what synthetic oil do you guys that mix your own prefer to use? I haven't found too many synthetics that mix with methanol that are cheaper than $70 a gallon. Klotz is $40 a gallon through SIG but I'd like to use something better than Klotz. [/quote] Both ways are right. Just need to remember if using weight, the weight of the ingredient needs to be the equivalent of the % volume required. Otherwise 20% nitro would really be around 14.5%. Mixing my own is much more cost effective also. I fly alot when practising hard for a comp and burn alot of fuel. My last calculations were $25.08 / gallon which equals $1.32 / flight. Of course the YS cdi's help here, with about 19 flights to a gallon depending on wind. I use Coolpower Purple MV in all my engines. I pay around $55 AUD / gallon. I tried the Klotz years ago, but found it didn't provide the same protection for the engine that Coolpower does.
Posted on: 6/3/2013 6:40 PM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11532466

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: bjr_93tz Maybe I haven't been clear. ALL my fuels are mixed to obtain final percentages expressed as VOLUME as this is what I believe the vast majority of engine manufactures mean when they provide such percentages in their manuals. If a particular premix company mixes ther fuel to the percentages but uses weight instead, they should state that clearly on the label as it shouldn't be the norm. I choose to use scales to mix my fuel rather than a graduated beaker or some other bottle with lines on it because it's EASIER and less messy for me. In order to use scales I use the density of each chemical I add to the brew, so I can add the right weight of chemical to achieve the correct volumetric ratio. Maybe I'm stingy, but it allows me to turn the fraction of a gallon left in my fuel jug back into a whole gallon (or some other quantity) of the same stuff, or some other quantity of a different set of ratios. Waste not want not? I try not to leave fuel lying around for more than 4 weeks if I can use it in something else. Back in the day, I used to mix my fuel a litre at a time in a bottle and pour them into my larger fuel tin for the day and my engines required minor re-tuning with each different batch. Using scales I don't notice this as much. YS users have enough to deal with without the fuel changing a bit [:D] As long as the final amounts are within a percent or two by volume of what the manufacturer recoomends (no matter what method you chose to acheive it) then your engine's in with a fighting chance. EDIT: Hey that's almost my calculator!! Mine's the 9850G It's a bit clunky but I like it and it's good for finding the roots of an equation when I'm too lazy to work it out properly. [/quote] That's exactly how i thought it should work if measuring by weight. The end result would be the same as if using volume. If you measure by weight alone then the volume percentages will be inacurate. I don't waste a drop of fuel either. I catch the overflow and put back into the bottle as well. I mix a coolpower bottle at a time (3.8 litres) and always use the whole bottle before using the new bottle. I very rarely mix fuels if it can be avoided. I don't worry about storing fuel for extended periods, it can sit for months and never had any issues with tuning my YS's. The same goes for different fuel batches. If i have to touch the needle, it usually indicates something is wrong.
Posted on: 6/3/2013 12:36 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11531542

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: 1QwkSport2.5r [quote]ORIGINAL: drac1 [quote]ORIGINAL: 1QwkSport2.5r Well, when I burn up all 10 of my engines from not using the fuel the manufacturer [b]recommends[/b], I'll let you know. Hint: it's gonna be a [b]LONG[/b] time. Better hold your breath and call the glow fuel police, I'm breaking the manufacturers rules. Better tell me how bad I am for not following
Posted on: 6/2/2013 9:37 PM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11531302

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: 1QwkSport2.5r Well, when I burn up all 10 of my engines from not using the fuel the manufacturer [b]recommends[/b], I'll let you know. Hint: it's gonna be a [b]LONG[/b] time. Better hold your breath and call the glow fuel police, I'm breaking the manufacturers rules. Better tell me how bad I am for not following the manufacturer's recommendations on break-in too. Well, except for my Jett. I heeded Dub's advice on that one. [&:] I'll let the other forum experts interject here and take over giving advice, suggestions, and anecdotes as I don't feel I'm qualified to do this stuff.... Sheesh..[8|][:@][:'(] [/quote] You are getting a bit carried away. The topic is about the accuracy of volume verses weight mixing. I never mentioned anything about engine failure due to the fuel mix you use. If you choose to use a different mix that's up to you. Just don't try to say mixing by weight is more accurate, when in reality all you are doing is changing the mix ratio which can be accomplished easier by using volume. Sheeesh.
Posted on: 6/2/2013 4:16 PM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11531173

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: 1QwkSport2.5r [quote]ORIGINAL: drac1 If the volume to weight conversion is accurate, wouldn't the oil and Nitro percentages be the same? [/quote] No. 20% by weight is not the same as 20% by volume. The conversion from weight to volume or vice versa is accurate, but the equation isnt that cut-and-dry. The conversion that needs to take place is not a simple volume measurement
Posted on: 6/2/2013 2:07 PM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11531073

RE: Please educate me on mixing fuel (methanol)
If the volume to weight conversion is accurate, wouldn't the oil and Nitro percentages be the same? [quote]ORIGINAL: 1QwkSport2.5r [quote]ORIGINAL: bjr_93tz Personally I mix by weight AFTER converting volumes to weight using the density of each component. Nitro weights 1.14kg/litre, Coolpower blue 0.98 kg/litre, castor 0.96kg/litre and methanol 0.79kg/litre. [/quote] I should have clarified - this is how I measure. All volumes are converted to weight. [quote]ORIGINAL: scale only 4 me So First in order to determine accurate weight per ounce, you have to have an accurate system to determine volume,, if you have an accurate system to determine volume, there is no need to convert into weight. Just not sure what I'm missing here. [/quote] A graduated cylinder or beaker work fantastic for accurately measuring liquids. Liquid measuring cups work good too. But... I don't think you understand the whole idea. The idea is to have the accurate amount of a given substance. Volume does not get accurate enough. Premixed fuel (by volume) will have ''extra'' nitro and be short on oil slightly. For the *most* part, this doesn't matter but to me it does because some of my engines are quite picky. [/quote]
Posted on: 6/2/2013 6:10 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11530712

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: bjr_93tz [quote]ORIGINAL: drac1 it is much easier to mix by volume. [/quote] Maybe, until I want to turn whats left in my DZ170cdi bottle into something for my .75AX, Hanno .61, or .10FSR I just made up a spreadsheet with mixing values for different volumes for my different engines and my casio calculator handles the oddball ''turn this fuel into that''
Posted on: 6/2/2013 5:19 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11530677

RE: Please educate me on mixing fuel (methanol)
[quote]ORIGINAL: scale only 4 me So First in order to determine accurate weight per ounce, you have to have an accurate system to determine volume,, if you have an accurate system to determine volume, there is no need to convert into weight. Just not sure what I'm missing here. [/quote] You are correct. If you need to measure out the volume and then weigh it, you are making twice the work. Weights can be obtained from the manufacturer of the methanol, nitro and oil, so no need to measure and weigh. Google is your friend.
Posted on: 6/2/2013 5:02 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11530664

RE: Please educate me on mixing fuel (methanol)
As nitro is approximately 1.375 times heavier than methanol and the oil weight is different again, it is much easier to mix by volume. As far as i am aware, most manufacturers mixing ratio recommendations will be by volume. I have been flying for 18 years and i fly 2 strokes, high performance four strokes and gas engines. I fly competitively in pattern and have always mixed my own fuel. I've never had a problem due to fuel mixes.
Posted on: 6/2/2013 3:58 AM by Author "drac1" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11530632

RE: The new model from CPLR!
Hmm, i thought the new YS is a 180.
Posted on: 5/20/2013 5:15 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11516888

RE: Andy Sheber Pitts s1s
Hi Robert, very good work on the Pitts. 10 out of 10 for perseverance. Which one of the big Pitts have you ordered?
Posted on: 5/19/2013 3:45 PM by Author "drac1" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11516382

RE: ys175
I used the Hyde LR85 mount and Central Hobbies nose ring in both my Valiants. The nose ring fitted spot on. Maybe yours was a dud? All the nose rings should be the same, so if one fits they all should fit?? I always use the YS teflon tape when using the YS mount as the noise ring inner is a hard type of plastic material and may cause wear on the engine.
Posted on: 9/18/2012 5:52 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11230699

RE: ys175
The YS cdi comes with a plastic spiral wrap to put on the high tension lead.
Posted on: 9/17/2012 12:15 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11230701

RE: ys175
That's correct. The outer braid is for shielding. There is no cuurrent.
Posted on: 9/16/2012 7:16 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11230532

RE: Anhedral Stab back in the Day?
I don't know what effect anhedral had on the early pattern planes as I wasn't flying then. But my current pattern ship is a Valiant which has anhedral stabs. Combine the anhedral with the correct CG and the aircraft will track on knife edge rudder only. No pitching problems to mix out.
Posted on: 9/1/2012 2:07 AM by Author "drac1" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11213316

RE: ys175
Hi Alejandro, I did notice on the photos earlier in this thread that the flange is thicker than on mine. I might try some thicker washers and see how that goes. With the thicker flange, is the flange threaded for the bolts instead of using nuts? Scott
Posted on: 8/30/2012 6:55 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11212143

RE: ys175
I'm aware of the properties of Loctite, but I thought I would give it a go anyway. There is a heat proof Loctite but it may be a problem to undo if it works well. I didn't think of tightening after the bolts were hot, so I will give that a go. Also do you use the standard graphite gasket? Scott
Posted on: 8/29/2012 9:04 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11211120

RE: ys175
I have tried loctite on the three bolts that bolt the header to the manifold, but they still become loose after about eight flights. Does anyone else have this problem? What methods do others use to stop then coming loose? I have not had any problems with the plug cap coming off and I don't secure it with anything. I usually have trouble removing the cap when I need to. Scott
Posted on: 8/29/2012 5:14 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11210849

RE: ys175
It is my YS i was talking about. Thanks for the info.
Posted on: 8/28/2012 7:02 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11208872

RE: ys175
It's interesting that you are so sure it will fire turning over slowly by hand. Just wondering have you actually tried. I'm not saying it won't, but i have tried both with the plug in the engine and with the plug out of the engine earthing against the engine. I was doing this trying to determine if i had a faulty ignition box. The only time i have had the plug fire is when turned over with a starter, not by hand. But like i said earlier, it's good practise not to tun by hand with the ignition on.
Posted on: 8/28/2012 5:50 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11208814

RE: ys175
Hi Papaone, I noticed in your photos you run a velocity stack. Is there a performance gain with this or some other reason for the velocity stack? Scott
Posted on: 8/28/2012 4:32 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11208739

RE: ys175
I think the engine has to spin at a certain number of rpm before the cdi will fire. (typical of most cdi units these days). Turning over by hand slowly won't be fast enough. But it's good practise not to tun over by hand with the ignition on.
Posted on: 8/28/2012 4:27 AM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11208731

RE: ys175
Defenitely go with the cdi. I am currently running the 170cdi in my 2 Valiants. I have 175 cdi's ready to go in when i get time. With the cdi my idle is about 1600 rpm. With glow plug it is about 2300rpm. Fuel usage would be about 1/2 to 5/8 compared to glow (depending on wind). I use 30% nitro, 10% low viscosity Coolpower oil and 1% castor oil. You need to keep the plug gap on the tight side to prevent the engine from misfiring. You also need to be carefull when adjusting the needle, as you get very little warning if you get to lean. On 30% nitro my needle is approximately 5/8 of a turn out. I have run mine with a glow plug without any trouble. Top end rpm seems to be similar, but the cdi gives much better mid range power. Don't need to use full throttle. I also had to richen the mixture to 1 1/2 turns out. For the ignition i am using the Aero Tech IBEC plugged directly into the Rx. Works brilliantly, no interference at all. Scott
Posted on: 8/27/2012 12:31 PM by Author "drac1" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11207408

RE: Phoenix 7
Thanks for the info guys. Scott
Posted on: 8/17/2012 6:41 PM by Author "drac1" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11197373