I have an Enya 90-4C engine but don't have a manual and can find precious little info online.
So I have a couple of questions.
1. what is the shaft size? Tower hobbies has the Enya 90-4S listed at 7x1mm (in trying to fit a prop I find it is just slightly larger than 1/4")
2. when using a prop nut like this [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXL751&P=7]PROP NUT[/link] . do I still need to use the washer? the reason I ask is the washer has a larger center hole and is centered by a flange on the nut that came with the engine so i would have no way of centering the washer and would have to buy one with a smaller center hole)
3. I plan on putting this engine in a Hanger 9 AT-6 any thoughts on this combo?