Bottom Bracket for Richey Logic Triple Crank
#1
Junior Member
Thread Starter
Bottom Bracket for Richey Logic Triple Crank
I'm currently using an old Ritchey Logic crank on one of my bikes. As a double this crank worked great, but now as a triple the shifting is not good. Does anyone know what length bottom bracket I should be using? Currently it has a 115mm in there.
Thanks in advance for any help you can provide.
Thanks in advance for any help you can provide.
#2
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 17,999
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4171 Post(s)
Liked 3,791 Times
in
2,270 Posts
It is more direct to measure actual chain lines, ft and rr. Or visually check the chain's angle when in the middle ring and cog(s). Minor deviations from "perfect" chain line rarely causes shifting issues. Many times it's the ring/chainstay clearance that controls the ft's chainline. How much space is there on your bike? Andy
__________________
AndrewRStewart
AndrewRStewart
#3
Full Member
Join Date: Nov 2016
Location: SoCal
Posts: 489
Bikes: 2014 Bruce Gordon Rock&Road, 1995 Santana Visa Tandem, 1990 Trek 520, 2012 Surly LHT
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 211 Post(s)
Likes: 0
Liked 43 Times
in
35 Posts
I'm currently using an old Ritchey Logic crank on one of my bikes. As a double this crank worked great, but now as a triple the shifting is not good. Does anyone know what length bottom bracket I should be using? Currently it has a 115mm in there.
Thanks in advance for any help you can provide.
Thanks in advance for any help you can provide.
Good luck getting the shifting/gearing you want.
#4
Senior Member
Join Date: Aug 2005
Location: Las Vegas, NV
Posts: 932
Bikes: '04 LeMond Buenos Aires, '82 Bianchi Nuova Racing, De Rosa SLX, Bridgestone MB-1, Guerciotti TSX, Torpado Aelle, LeMond Tourmalet 853, Bridgestone Radac
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 101 Post(s)
Liked 46 Times
in
36 Posts
I used to have a Sugino-made Ritchey MTB triple on a Bridgestone MB-1, which has a 68mm BB shell. I think it used a 122mm spindle BB.
Likes For dsbrantjr:
#7
Newbie
Join Date: Aug 2019
Location: Upstate NY
Posts: 15
Bikes: 1991 Bridgestone MB-1, 2022 BMC Monstercross, 1990 Bianchi Axis
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 6 Times
in
4 Posts
The Ritchey crank pulled of my 92' Bridgestone MB-1 had a 120mm spindle which is hard to find. I plan on trying 118 and will see if that's close enough.
Cheers.
Cheers.
#8
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,625
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3868 Post(s)
Liked 2,560 Times
in
1,574 Posts
I'm currently using an old Ritchey Logic crank on one of my bikes. As a double this crank worked great, but now as a triple the shifting is not good. Does anyone know what length bottom bracket I should be using? Currently it has a 115mm in there.
Thanks in advance for any help you can provide.
Thanks in advance for any help you can provide.