The computer timing chip is smarter than any 3 modelers combined Over 200 RPM it is full retard, ie 25 degrees of timing change. The average hand flip is 500-600 rpm. So a 30 deg BTDC static timing becomes 5 deg BTDC when starting, thats why it doesn't kick.
Well that makes a lot of sense. I still dont understand how the very first pop is gona bee retarded as its takes at least two times through the sensor to get a speed. mine you can put it just before the sensor and flip it through and it will pop off and run. I guess its probably not retarded at that point till it hits the second time through the sensor.
so if your just pulling it through slowly by hand to see where it sparks then it sparks at full advance right?
Hey combat, about the ml to cc, 1ml=1cc. no conversion necessary. Im glad that your happy with the final results. I intend on getting my ryobi fixed (i just so happen to have the right tap to fix the threads) and hope to run it soon. I will be using a 18-8 top flite prop. I also have to wait for warmer temps in order for my tach to work.
combatpilot Date 4/4/2009 4:36 AM
Well that sure makes for a simple conversion lol.
I am going to denver for a week to get a mill and a lathe but when i get back i plan on putting together another leakdown testor. I will put it together with a dynathrust test prop and i will send it to someone on here. from there he will pass it on to the next guy and it can just go around so we all get a chance to test off of the same test standards. I think i will also start a journal to send with it. in it i will list all my mods and test readings and the next guy can list his. when it comes back my way we can post all the results. that should be very interesting huh. kind of a standardized test kit. maybee i can even put the laser digital tach in it to. then we would have a standard tach and no guessing on tach differences. I could even put in it my timming tools and degree wheel so we all can get good timming info. i can put it all together in a tool case so it would be easy to ship.
dang i like this idea.