Vosper 1/16th scale crash tender
Second run today. Much quieter with a universal coupling replacing the rigid coupling and maybe planing at a slighly lower angle with the battery moved further forward. However, still taking on too much water 😭 . The hull doesn't seem to be leaking (bath test) and I don't think that enough spray Is coming onto the centre hatch or the rear deck to account for It. Main suspect Is water coming up the prop shaft or rudder shaft (both are greased). Has anyone encountered the same problem? Any thoughts on how to solve It would be much appreciated.
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You should have a thrust washer at either end of your prop tube with minimal clearance (a cigarette paper used to be used in the past).
I agree with Alan, the prop shaft bearing should be a close fit. if you can feel any play at either end they probably need replacing.
Hope you can solve the problem
How have you sealed the prop shaft into the hull? This needs to be really solid and P45 or similar usually makes a good seal. Can you post a pic of the underside where the prop exits? A internal view (if possible) would help. The same would apply for the rudder shaft.
To test the hull in the bath you do need to hold the hull as low in the water as possible for several minutes to allow the water pressure to find any leaks.
Dave