Frankenbike just needs crank, have BB
#1
Senior Member
Thread Starter
Frankenbike just needs crank, have BB
I'm looking at an Alivio crank for my Frankenbike. It's the last piece I need to finish this little project which has blended a mountain frame with 700c wheels and cross style tires.
The crank calls for a 113mm BB, but I just happen to have a 118mm BB. Is there any reason I couldn't run these together? I'm thinking I'll just have to adjust the FD stops out further to compensate. Am I right?
Thanks all.
The crank calls for a 113mm BB, but I just happen to have a 118mm BB. Is there any reason I couldn't run these together? I'm thinking I'll just have to adjust the FD stops out further to compensate. Am I right?
Thanks all.
#2
Elitist Troglodyte
Join Date: Jun 2006
Location: Dallas
Posts: 6,925
Bikes: 03 Raleigh Professional (steel)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Yeah, you could do it, although the chain line will be off. Is this a geared bike?
You should do a complete reset on the FD every time you change cranksets.
You should do a complete reset on the FD every time you change cranksets.
__________________
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
#3
Senior Member
Thread Starter
Yes, it will be a geared bike. Though I had considered dropping the small ring from the crank and making it a double. I don't think I'll need that ring very often.
#4
Elitist Troglodyte
Join Date: Jun 2006
Location: Dallas
Posts: 6,925
Bikes: 03 Raleigh Professional (steel)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I'd recommend keeping the ring on. When you need it you really need it.
Try mounting the crank and measure the chain line (see Sheldon for how). Then compare to rear chain line - they should be the same. (also check chainstay clearance)
Chain line mismatch can result in degraded shifting and increased chain wear.
Try mounting the crank and measure the chain line (see Sheldon for how). Then compare to rear chain line - they should be the same. (also check chainstay clearance)
Chain line mismatch can result in degraded shifting and increased chain wear.
__________________
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Stupidity got us into this mess - why can't it get us out?
- Will Rogers