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    Response
    Re: 40'' Seaplane Tender, new build T
    Hi Peter, always used nylon, Teflon or brass bushes in my IC boats and they lasted for years but these shafts were cheap so I bought a few. Seems the main problem is the shafts are stainless and seem very soft, (and as mentioned, not straight) and once they get to a high speed they are whipping and going out of shape, (I've managed to straighten the worst one and it runs much better). Thought about bunging a nylon bush in the center of the tube to stop that but I'll wait and see how they go once filled with oil and have a load on. Bearings appear to be a stepped 8mm outer and 4mm inner so I'll see what NMB has (either ball or
    needle roller
    ). As you mentioned the rollers would be better, (my friend used them in his Hydro about 35 yrs ago and swore by them,- they were bearings used in dental drills) If they are no good as is I might make the shafts from silver steel ($10/m length - just priced it) and chuck some decent bearings in. Haven't tried a file on the bearing outer yet, that will give an idea of the bearing quality.
    5 years ago by jbkiwi


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