Carpcruncher

Hi all
I need to remove prop shaft from a wooden hull. The old bushes are worn and the shaft corroded. New shafts are 6mm OD tubing, mine is 8 mm and I cannot therefore just replace bushes. Any tips for getting the old shaft out with minimum damage.
Carpcruncher

bogstandard

With it being a wooden hull, you might find that a sharp tap on the inboard end should break the seal from the old glue. Or if you want to avoid outside splintering, try the other way first.
The other thing to consider, will the new shaft fit inside the old one if the old bearings are removed? If it does it might save a lot of cleanup work.

John

alan2525

I was thinking the same - If you saw off the old shaft with a dremel and then file it flush with the hull you might be able to fit the new one inside the old tube.

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Carpcruncher

That should work. Bush OD is 6.45mm so a nominal 6mm tube should go through. Have ordered the shaft so time will tell. Many thanks,it could save deep grief. Will let you know result.

Carpcruncher

The new propshaft was itself 8mm diameter but bushes were difficult to remove and so I decided to remove old shafts rather than damage new shaft. Removal was not too bad using a Dremel and no damage to hull. Not sure what the shaft was fixed in with though, some type of filler. Any suggestions for the best.

alan2525

I'd use araldite rapid for holding in prop shafts. It's good stuff!

Bunkerbarge

They do say that araldite rapid is not as water resistant as normal araldite so I would use the normal stuff. When it has set completely I would then fair it in with Davids P38 filler from Halfords.

I made the mistake of fitting mine with rapid so I have endeavoured to get plenty of paint over it to keep the water away from it.

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Bluewavestudios

I can certainly agree with Richard above on that point,

The rapid stuff is nowhere near as good as the conventional stuff, it's ok for quick fixes but will leak. I know I tried a similar repair on a boat using this stuff. It was only sorted when I used the conventional stuff and the leak finally stopped.

Best done on a spare evening or so before you consider going to the pond/lake and let it set properly, now the weather is picking up a bit that should make it better. (Glues & Paints don't set/dry well in cold weather) If you are allowed the luxury of doing this indoors, even better. Then again Araldite doesn't stink the place out so you might get away with it

Regards.......Mark.

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