building up a new frame and the clearance between the end of the crank and the chainstay is mighty tight. about 1mm. (ignore the clearance bw the chainring and cs – i plan to run a smaller ring so that shouldn’t be an issue). any suggestions for what to do? just go with it and see what happens? dimple the stay slightly? crank is sugino 75 165mm and bb is 68×110.5mm. i’d rather not go any longer on the spindle so as to maintain a good chain line. anyone else had this issue?
by iris141414
10 Comments
I don’t have any help—I’m sorry. What is the frame? Color is awesome
Nope. Not if you like your paint anyway.
I have a frame (Toyo) with the same cranks and similar clearance and it has never been a problem.
I’ve run pretty much the same clearance, it will eat your paint but it’s not a safety issue at least. Is your chain line really dead on like this? It seems worth getting a 1mm wider spindle to me since this frame is cool and the paint is probably worth saving
I have the same clearance on my bianchi with campy record pista, never had a problem.
This should be fine. I have run some extremely tight clearances on my 75s and had no issues.
Show us that pink lugged frame
Crank arm clearance looks fine but how close does the spider get to the chainstay?
Maybe you can run it but your chainline is ass, like there’s zero chance you are able to run this without some serious misalignment that will feel like ass. You’re better off getting some chainring spacers and longer bolts, and moving the chainring over like 1 or 2 mm. It will make a world of difference. However, if you are willing to spend a bit more you can get a bb with longer spindles, and I believe that will push your cranks out a little and also fix the issue of the paint on your chainstays scraping off. Your frame will flex a little while you ride it and that flex might cause occasional contact which will rub your paint off with time
If you’re already torqued down this isnt an issue, nothing but crashing would cause your crank arm to move sideways into the frame. Your feet will occasionally rub the frame though for sure.