Model Boat Mayhem
Mess Deck: General Section => Model Boating => Topic started by: merseyferry on March 24, 2017, 08:19:28 am
-
hi again all ,why does the propeller keep tightening when the motor turns.. the set up ive got is from propeller end ... propeller lock nut, washer, shaft ,,, other end . washer, locknut coupling motor.
-
I would suggest a little 'nail polish' on the threaded areas to lock them in place.
( Loctite or superglue may be too strong in this application )
-
You have to lock the nut against the prop tightly, finger tight wont do , same the other end lock the nut against the coupling . . .making sure there's no excess end float , the bigger the gap the more water gets into the stern tube, a big problem if your shaft set up is below the water line completely
I've used M3 stainless grub screws for years in both the props & drive end , plastic props not easy, all brass is totally safe . . .tend to strip the threads to easily in the plastic props , so don't over tighten . . .
Isn't model boating FUN %%
Bill
-
The common mistake is to hold the shaft and wind the locknut against the prop or coupling, which gives the appearance of a locknut, but isn't locked. Hold the prop to tighten its nut, hold the coupler to tighten that one. As suggested, adding a drop of thread locking compound helps.
-
thank you gents.. still amasses :-)) :-)) :-)) me how helpful mayhem members are