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Mess Deck: General Section
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Propeller shaft
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Topic: Propeller shaft (Read 1294 times)
merseyferry
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Posts: 383
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liverpool
Propeller shaft
«
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.
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Martin (Admin)
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Peterborough, UK
Re: propeller shaft
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Reply #1 on:
March 24, 2017, 08:32:00 am »
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 )
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imsinking
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Re: propeller shaft
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Reply #2 on:
March 24, 2017, 09:36:17 am »
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
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malcolmfrary
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Re: Propeller shaft
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Reply #3 on:
March 24, 2017, 05:42:17 pm »
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.
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"With the right tool, you can break anything" - Garfield
merseyferry
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Re: Propeller shaft
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Reply #4 on:
March 24, 2017, 06:28:25 pm »
thank you gents.. still amasses
me how helpful mayhem members are
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Model Boat Mayhem
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Mess Deck: General Section
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Model Boating
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Propeller shaft