A10
 

Has anyone built the A10 from RCM? what did it weigh?. I built one and am having lots of trouble setting up the motor. I am using a perry pump with an LA .46, even tried using return lines from the pump and I am not even going to mention that it want's to overheat with the pusher configuration.

A10
 

- What kind of perry pump you using?
- how do you have the lines set up now?
- have you tried putting a 'normal' prop on the engine to keep it cool till you have it set up right?

I think we need just a little more information about your set up, then I'm sure some one will have plenty of answers for you.

A10
 

As far as I know there is only one perry pump. It works off crank case pressure. The fuel tank is a foot away the motor is inverted. The pump is located 1 inch behind the motor. I tried pumping direct to the intake on the LA .46 but could set the high but not the low end. If I tried to set the low end the high end was no good. All attempts made for a very hot running engine. I tried a return line located between the pump and intake that leads back to the fuel tank as not to overpressure the system yet still maintain a source of fuel right there at the needle valve. i tried an aux tank (2 oz) by the pump and pumped out of it then a return to the main tank. It partially worked but when the air in the aux tank finally worked it's way back to the main tank the motor quit?????????????????. go figure. I had another fellow here too but no luck. The people at Perry say I can plumb that motor if I use the return line.

A10
 

If your pump is run off of crank pressure then it's probably a Perry VP-30 pump. Perhaps you might try posting this question in the engine manufactures forum, they might be able to help you the most.

What happens when you turn the engine right side up, how does it run then?

BTW, the return line is a good idea. I was having a little trouble with over pressurizing the carb on my B1, I'll have to try that and see if that helps.

Thanks.

A10
 

When you install a YS .45 2-stoke engine, your problem will be solved.

A10
 

You are right It's a VP-30 pump. It does not seem to make a difference if the motor is right side up or inverted. I will try to put a regular prop on to see if that helps in the overheating department and then put the pusher prop on. Thanks.

A-10
 

I flew one of these for a guy that had a YS45 on it for power and I felt it could have used a little more power. I don't want to call it marginal, but it didn't fly like an A-10. The La doesn't put out near as much power as the YS.

A10
 

By the way do you know what the weight of the plane was. How did it fly? I am told they fly very mellow. Thanks.

A10
 

Was wondering if you fixed the fuel/engine problem? I'm in the process of building an cm A-10 now and was not sure which way was the best to go a pump or 1oz tank close to the engine. Sounds like you tried both with no success. Was also going to install an os46sf but sounds like everyone agrees that the ys45 is the ONLY way to go is this true?

A10
 

I owned one of the prototypes of this A-10 for awhile (swap meet deal..)

Powered by a TT 46, no pump. Takeoffs were long, but once in the air, it was awesome. Engine was upright, and did not take kindly to overheating, which it was prone to do, if it did not get airborne right away...

It was a fun plane......

A10
 

Opfor;

Well I had my first flight last weekend with the A-10. Had our best pilot take it off for me. (too nervous). I had the LA .46 on it with the perry pump and a perry carb. I tried that motor with a friends os .25 carb and it ran not too bad so I purchased a perry carb. Again it ran so so but the idle was the pits. It flew with this set up and needed about 60' to get air born on a grass field. Had to fly at full throttle though. It looked great in the air. You sure knew what it was unlike most planes. Ended up with a dead stick though because of that poor idle. ......................Plane is ok but I just spent several hours putting a TT.46 on the plane and will try it again I hope this weekend. If you are building one now I would highly recommend putting lightening holes in the rear fuselage and tail feathers. You may only think you are saving 3 oz but thats also about 4 1/2 oz in the nose for a total of 7 1/2 oz. Before I added the lead my A-10 came in at a little over 6 pounds. With the LA .46 on it, it was 7 lbs, with the TT.46 it is now 7 lbs 13 oz. ouch. You may have guessed the La .46 I felt was not powerful enough, I guess that's what others tried to say here on RC Universe. By the way the TT.46 idles good with the perry pump.

A10
 

Glad to hear you got it off the ground and back in one piece. I believe I'm gonna go with a YS-45 after talking with several people. Which do you suggest an 1 oz in line tank or fuel pump? If you would explain more on the lighting holes and feathers. Thanks Mike

A10
 

Opfor:

Well I had two flights today with the A-10 and the TT.46. Awesome. Man she looks and fly's like the real thing. Not an acrobatic bird so some may be dissapointed. She is not twitchy at all, not that it won't turn sharp, it can but rather you don't get that jerky looking movement. It's more than just the way the throws are set up, it might be due to the weight. It fly's jet like.... hard to describe. Its fairly easy but I still had our ace land her she comes in fairly fast probably due to the weight She fly's inverted well and tracts through loops good.
If I recall the aft fuselage section is made from 3/16 balsa. That might be heavy ??? but if I had to build it again(and I would) I would cut a series of 1 1/2" holes in the sides and tail feathers to eliminate weight. Not too many though. With the motor hanging so far back literally every once counts a great deal more than a reg. plane that has it's motor closer to the cg. As far as a aux tank................ I tried that. If your set up works that way then go for it but again that extra weight of the fuel tank should be avoided. I would still use a perry pump as long as the motor runs RELIABLY. By the way The TT.46 runs with a 10-7 pusher prop at 13,300 rpm. Iam no pro by any means but will give any help I can.

A10
 

They are really very manoeverable (sp?) planes even without rudders....just like the full size ones!

Landings can be quite slow with a nose up attitude with that thick wing...

A10
 

Nony:

I suspect we'll be able to bring it in more slowly when we get used to it. We are being a little cautious due to the weight of the plane and not being used to the pusher configuration yet ie: no prop wash over the control surfaces.