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BB - spindle length

Old 06-14-08, 02:18 PM
  #1  
bklein
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BB - spindle length

My newly converted fixie has a 110mm bottom bracket which forced us to install the chainring on the frame side of the cranks. It fits very tight to the frame, but doesn't touch and just rides fine.
Can I use a shorter spindle (maybe 103mm) with the bottom bracket in order to get the chainring on the outside of the cranks. As it stands, I will not be able to use anything bigger than the current 46t ring. I use a 53t on my road bike.
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Old 06-14-08, 05:25 PM
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I tried a 54t (w/ 15t cog) for a while, but the torque puts a lot of strain on all the components and frame when sprinting or doing steep hills. Not to mention the stress on the knees when going downhill with no brakes. I ultimately decided to drop to 50t so as not to destroy the frame and components and save the big chainrings for when I can afford a real track bike. Interestly the 113mm bb cartridge was the first casaulty -- the 103 sugino bb replacement puts a lot less leverage on the bearings and has lasted quite well for a year now.
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Old 06-14-08, 05:37 PM
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Originally Posted by sprince View Post
I tried a 54t (w/ 15t cog) for a while, but the torque puts a lot of strain on all the components and frame when sprinting or doing steep hills. Not to mention the stress on the knees when going downhill with no brakes. I ultimately decided to drop to 50t so as not to destroy the frame and components and save the big chainrings for when I can afford a real track bike. Interestly the 113mm bb cartridge was the first casaulty -- the 103 sugino bb replacement puts a lot less leverage on the bearings and has lasted quite well for a year now.
lol
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Old 06-14-08, 08:25 PM
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posting in epic thread
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Old 06-14-08, 08:40 PM
  #5  
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Originally Posted by sprince View Post
I tried a 54t (w/ 15t cog) for a while, but the torque puts a lot of strain on all the components and frame when sprinting or doing steep hills. Not to mention the stress on the knees when going downhill with no brakes. I ultimately decided to drop to 50t so as not to destroy the frame and components and save the big chainrings for when I can afford a real track bike. Interestly the 113mm bb cartridge was the first casaulty -- the 103 sugino bb replacement puts a lot less leverage on the bearings and has lasted quite well for a year now.
This from the guy who posted a month stating he rides 1.25 miles and is tired.. hmm 54x15.. explains it.
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Old 06-15-08, 05:33 AM
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Originally Posted by chrism32205 View Post
This from the guy who posted a month stating he rides 1.25 miles and is tired.. hmm 54x15.. explains it.
Actually I was replying to that guy (rides 1.25 miles and is tired). He is like 350+lbs, which is not particularly funny even for my twisted sense of humor. If you live in FL where the biggest hills are highway overpasses and most bike routes typically go downhill, 53t might work just fine. I think bklein would find something in the 48-50t range to be much more practical.
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