ORIGINAL: Flyer95
Rcpilet,
I dont understand why your big glow engines where running out of torque. Where they overheating? A pump or regulator does not guarantee rich setting and sufficient fuel supply. I know some guys running fuels without nitro or very low % are having more trouble with the needle settings and overheating problems. I usually grossly overprop all my glow engines and use quiet pipes for two strokes as we have strict noise restrictions here.
My ST G3250 and a APC 20x12 @7600 would pull my plane vertical all the way to the moon
if my transmitter was strong enough
. That was just an example because all my glow engines will pull vertical until the tank is empty. Pattern guys are doing loops bigger than a fotboll stadium all the time with the 23-26cc twostrokes loaded down to 7-7500rpm at peak.
They just do.
If you don't know what I'm talking about--and you've never listened to a glow engine run out of torque--then there's nothing more I can say to describe the sound and feeling to you. They just DO.
You have to just listen to it. You can tilt your head towards the plane and listen to a glow engine slow down and loose power on top of a big IMAC loop or a long vertical upline. I've heard all of them do it and guys will swear, "Listen to that engine--it's pulling like a freight train!!" No it ain't. It's falling all over it's face every time you pull back on the stick and put a heavy load on it.
I don't want to argue or get in a fight. You say they run good and have plenty of torque, and I hate 'em because I don't think they have enough consistant torque to keep swinging a big piece of lumber. If your happy with the big glow engines and they put out enough torque for you--them I'm happy for you. Go fly and have a ball. I don't like them and I quit using them about 4yrs ago. Thats just my opinion. Your not wrong and I'm not right. I just think that glow engines run out of torque. If you've never noticed it, and your happy--then great.
I just prefer gas engines. Once you get a taste of a gasser--you'll never want to touch a glow engine again. I still use them, but only .75 size engines on little 3D planes. Everything else is gas.