Help with drive train

[blii]

hi everyone
i just bought a Os max .32mx-sx engine for a jet unit similar but bigger then the one in the graupner jet star. but i am unsure on how to attach the engine to the jet unit. The shaft on the jet unit is 5mm and i am unsure how to atttach the engine to it.
also the engine comes with a part which sits in the flywheel, but i can't see anything to fix it in there, is it normal for it to just sit in place.

thanks
blii

[RickE]

You might check and see if Octura makes a collet capable of fitting your O.S. engine along with having a 5MM locking end to connect to your jetdrive. Checkout a copy of R/C Boat Modeler Magazine for the phone/address of Octura.

RickE