Anyone know how the prop drive is held on the engine? Is it keyed to the shaft, press fit, screwed on?? Thanks

Also anyone know if a shorter prop drive is available. The one on my engine is about 1.25" long.

Hi!
I think it is screwd in...like on the old .40 sport R/C K&B engine.
Why don't you just cut it off with a Dremel /cutting disk if you think it's too long??

Regards!
Jan K
Sweden

Its shaped like a spool and narrow in the center. I also never would get it square without a lathe.

Try www.mecoa.com they sell K&B engines and may have shorter drive hubs...Good Luck!

WW