Crank and bottom bracket not compatible (not what you might think). Options?
#1
Goes to 11.
Thread Starter
Join Date: Oct 2010
Location: Wichita, KS, USA
Posts: 2,547
Bikes: 2015 Soma Double Cross
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Crank and bottom bracket not compatible (not what you might think). Options?
I've got a Shimano FC-1056 crankset that I intended to use on my Peugeot UO-9 conversion. I purchased a threadless bottom bracket from Velo-Orange with a 107mm spindle (correct length as per Shimano), and due to the extra thickness of the BB cups, when I torque down the crank arms the bottom bracket binds. It seems the inside of the bottom bracket cups are pressing on the bearings when the crank arms are properly torqued.
Is it safe to grind the back of the crank arms for more clearance?
Is it safe to grind the back of the crank arms for more clearance?
#2
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,831
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5849 Post(s)
Liked 2,683 Times
in
1,497 Posts
Within reason, shaving a bit off the arm won't be an issue. But use a file. When you grind aluminum it tends to get hot and load up the wheel very quickly.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.