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Search: Posts Made By: aeomaster32
Showing results 1 to 13 of 13
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Forum: "1/2 A" & "1/8 A" airplanes
10-02-2008, 06:32 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

One possibility is that as the fuel level drops, it uncovers an air leak in the tank. Check that the fuel pick-up fits the nipple snugly, and goes all the way to the bottom of the tank. Check also...
Forum: "1/2 A" & "1/8 A" airplanes
10-04-2007, 10:52 AM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

I think so, because I have had no trouble with a teflon reed which seems a little thicker. As long as the reed stays in place, and can move enough, it should be OK. If not, you can always open up the...
Forum: "1/2 A" & "1/8 A" airplanes
10-03-2007, 07:47 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

The little reed is supposed to flutter in and out with the crankcase pressure fluctuations, and thus needs to be able to move outwards slightly. The spring is needed to keep it in place rather than...
Forum: "1/2 A" & "1/8 A" airplanes
09-12-2007, 11:03 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Since no one else has replied, I will try to help, although I have never used the tool. Basically, you are trying to take the slack out of the ball and socket joint in the piston. If there is no...
Forum: "1/2 A" & "1/8 A" airplanes
08-29-2007, 10:17 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Later Cox's changed the gasket to that "top hat" style, which incorperates the reed holder. These dont' fit earlier engines.
Forum: "1/2 A" & "1/8 A" airplanes
08-28-2007, 09:58 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Someone living nearby should take this up. What a deal.
Forum: "1/2 A" & "1/8 A" airplanes
08-28-2007, 03:48 AM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Well that depends on tank size. The small tank is about 5cc, and the large about 8cc. For Texaco, we want the engine to run as long as possible. We do this by making it as lean as we dare, and...
Forum: "1/2 A" & "1/8 A" airplanes
07-19-2007, 05:51 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Those figures seem a bit low. I can manage near 8000 on a Master 7x4. It may be that you have a throttled effect. Somehow the air or fuel is restricted. On 5cc of fuel it is normal to go 2:30 with a...
Forum: "1/2 A" & "1/8 A" airplanes
05-24-2007, 05:16 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Quote:For sport 1/2A se 15% nitromethane minimum, 20-30% better. 10% makes for finicky running in most cases. They burn so little why be chintzy on nitro content?

Just to be clear, in my case it...
Forum: "1/2 A" & "1/8 A" airplanes
05-14-2007, 07:26 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

First, about the fuel. I have run on as little as 5% Nitro, but settle in 10% for Texaco competitions. (Higher nitro increases fuel consumption.) As for oil, I use 20% Synthetic, but make no claims,...
Forum: "1/2 A" & "1/8 A" airplanes
05-13-2007, 09:39 AM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

I use a Cleveland Playboy Snr. from a "Classic Models" plan. I use a Master narrow 7x4 prop which gives around 8000 rpm. Here, in Australia, I only use the heavy wing loading for the International...
Forum: "1/2 A" & "1/8 A" airplanes
05-12-2007, 09:44 PM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

As an example, 1/2 A Texaco requires models to have 8oz per sq. ft wing loading. My Playboy has a 50 inch span, and ends up weighing 17 1/2 oz.

Under light lift conditions, I have managed 15...
Forum: "1/2 A" & "1/8 A" airplanes
11-08-2006, 06:40 AM
Replies: 294
Views: 126,246
Posted By aeomaster32

RE: Cox Reed Valve FAQ

Thanks for all the good information. For Texaco, I settled on a 315 sq. inch wing, and a standard Baby Bee. It has single fuel bypass, and non split exhaust, ie, has sub piston induction. I don't...
Showing results 1 to 13 of 13


 
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