That's a good tip Mattias. Hot-tip yup! Are the u/j's ('cross-balls') the same too? Shafts don't often appear for sale, and it seems to me that most that do come up are well worn, so a new substitute would be handy.
1: Spreading of the plastic U-joints should be able to be fixed by immersing the part in boiling water, then squeezing the ends parallel with pliers or clamp, then cooling off in cold water.
2: I've done a fix of excessive play in the holes by using a soldering iron to soften the plastic and 'close-up' the holes a little. Maybe not a long-term solution, but better than excessive slop.
3:l I'm not relaxed about Optimafan's sloppy diff, there must be a mismatch of components in there surely?
4: Could the Procat thrust race be adapted to fit the XLS? Probably not, but I mention it because new Procat thrust races are easy and cheap to buy 'cos it's a common helicopter part.
5: Bumpers? got to be close to being worthwhile for someone to do re-rees!!!
(But then I forgot that there'd only be about four people in the world dopey enough to be restoring these things!)
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