Re: RD-17 crank defects—-

[jethro]

Tried putting it in lathe—- low RPM
worked it with 320, then 400 then 600
That reducesd the area of the defects quite a bit. I think they are over a small enough area now that the (new) rollers might be happy.
I have now noticed that the piston pins are loose in the pistons. – enough that i can see wiggle. As I remember those are supposed
to be snug enough to be lightly driven out. Will try taking out the snap ring and see if they just fall out…..
Maybe new pistons. one is showing some scuffing on the side- and the rings are stuck in the grooves at that same clock position
on the piston. maybe an overheat…

Maybe I can use the crank …… I wont turn down a good one though I f I can find one……
Thanks
Tim