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Author Topic: diva prop shaft  (Read 1165 times)

philgg1946

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diva prop shaft
« on: November 26, 2020, 07:47:12 pm »

I've tried to reduce the noise from the prop shaft of this model,it's m2 bar quite flexible,I even put a new shaft in ,tried grease, any one had same prob can anyone give me any tips on how to make it quieter, phil g
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Ralph

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Re: diva prop shaft
« Reply #1 on: November 26, 2020, 09:59:52 pm »

Never had this problem but would fitting a PTFE sleeve the full length of the shaft tube help?  Bit like on a flexi shaft.


Ralph
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radiojoe

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Re: diva prop shaft
« Reply #2 on: November 26, 2020, 10:01:52 pm »

Hi Phil, Check if the shaft is straight by rolling it on a flat surface, if it is "true" noise is usually caused by out of line motor or worn universal joint.


Joe
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mbm999

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Re: diva prop shaft
« Reply #3 on: November 26, 2020, 10:18:21 pm »

When i built my Diva, the bearing at one end of the supplied prop had been attached at a slight angle so wouldn't even accept the shaft let alone turn. Maybe yours isn't as bad but is still slightly "off".
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Klunk

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Re: diva prop shaft
« Reply #4 on: November 27, 2020, 12:19:42 am »

a picture of inside would help. there are reasons for noise, so we might be able to see it.
Is the coupling aligned, propshaft supported, motor mount flexible etc etc
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Re: diva prop shaft
« Reply #5 on: November 27, 2020, 01:21:06 pm »

Prop damage/balance?
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dodes

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Re: diva prop shaft
« Reply #6 on: November 27, 2020, 02:55:43 pm »

I have had loud noise from models when the platform for the motor mounting has space between it and the hull. Really had bad noise on my smit neatherland model, I cured it by filling in the area under the bottom plywood shelf with P38.
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philgg1946

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Re: diva prop shaft
« Reply #7 on: November 29, 2020, 09:33:11 am »

Cheers,I've ordered a new prop shaft,  Phil
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