ORIGINAL: kthmarks
Hey guys, thanks a lot for input....I'll heed the advice.
With regard to the Saito, I broke it in on a test stand. I seem to recall I got a good idle in the low to mid teens. And I'll check out a glow driver. Other than the obvious (doesn't move the plane) what would be a target RPM for idle?
The saito seems to like a healthy dose of wet prime when cold....finger over the carb, apply heat, several turns through till the "bump" at the prop, then she fires right off. Obviously, in this plane, when mounted, the carb is inaccessable. How efficient is wet priming from the exhaust? I'm a seasoned hand flipper and I'm resisting the need to go to the electric starter....old dogs......etc
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No disrespect meant for the gentleman suggesting the use of a glow driver, but you really do not need to use one if your engine is nominal and broken-in sufficiently. While a glow driver is good insurance on a large model where the weight is insignificant, it is too heavy for a .40 sized model. Besides, like I said, if the engine is nominal (normal), the fuel is good and the engine is adjusted properly, they simply are not necessary. Just be sure to use a good four-stroke plug (OS Type-F) and 15% nitro fuel. There is a bit of art required to adjust the Saito low speed needle, but there is plenty of information on RCU on how to do it right. Once adjusted and working properly, if you decide that having an onboard glow system is for you, then go ahead and do it by all means, but your model will fly better without the extra weight.
Ed Cregger