AGR413
Posts: 411
Joined: 3/31/2005
From: Mesa,
AZ, USA
Status: offline
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quote:
ORIGINAL: Stick Jammer
quote:
ORIGINAL: AGR413
I have heard the FX motors are better "speed" motors, where as the AX are more torque.
I'm not sure that's an accurate description. Any two cycle glow engine gets its power from RPMs. Basically the only difference between the FX and the AX is the new Bi-Metallic Liner which is supposed to increase compression and last longer. At any rate, they are both very good engines.
Well to be completely accurate two cycle glow engines get their power from the the ignition of a mixture of fuel and air. This is a function of how much air and fuel it can efficiently intake and exhaust once it is burned, and how well it translates this energy into mechanical energy. In the case of two stroke engines, different bearings intake and exhaust porting schemes, different stroke length, head polishing or shimming can also affect performance and also affect what the engine does more efficiently produce high RPM with a smaller prop or swing a very large prop at a lower RPM.
You could set up two otherwise identical engines differently one to swing a smaller high pitched prop at a higher RPM, to produce greater pitch speed. The other to swing a large, low pitch prop for static thrust at a lower RPM.
While this may not apply to the two engines mentioned (I was only reporting what I had heard) the concept is sound.
< Message edited by AGR413 -- 3/3/2008 11:17:15 PM >
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RE: Nitro models pusher Bobcat? - 
