Hope someone can help me!
I have a 1980 Soma Sport 10 speed that I just got out of my basement after 26 years. Tested it and found that everything works fine.
I removed the cranks (Maxy) and chainrings (With a Park Tool CCP-2) for cleaning and then replaced them. I am now having problems shifting from the small front chainring to the large. It will grind and make noise then will go to the large chainring. If I shift going slow and with no resistance it will shift fine.
Is there any way to confirm that the crank is all the way to the home position? I tightened the nut as far as I can (I think) If I try to tighten it any further I am afraid I will strip something. I did try to adjust the high limit screw on the (Front: SUNTOUR Compe-V) derailleur a little at a time until finally the chain got thrown over the large chainring. I then adjusted it back to keep this from happening but it still wants to grind and make noise with the least amount of resistance.
I am not convinced that the crank is all the way home. Like I said, I didn't have this problem before I removed these parts. All gears and chain are in like new condition. The bike only had 67 miles on it when I parked it 26 years ago. I also degreased and then lubed the chain with ProLink chain lube.
Thanks for any help with this,