Last month while in Denmark, I noticed after about the 5th day on the road that my Bottombracket was starting to make some noise under load. That got me to thinking that: 1. I did not do any maintaince on the BB before I left for my trip. I can not say if my LBS has ever performed maintenance on the BB. I have not used my LBS for maintenance for over two years. 2. The Voyager is still running with its original BB form LCD. 3. I now have over 10 000 km on the BB. 4. Maybe I should think about replacing the BB.
Well, Bottombrackets are sized with numbers like below: 68 x 107 68 x 110 68 x 113 73 x 107 73 x 110 73 x 113
I can figure out that the 68 represents the width in mm. I can measure that. What is the other value? And how do I determine which I need for my triple crank set? --
Cletus D. Lee Bacchetta Giro Lightning Voyager clee.orgclee.orgOpen ↗ - Bellaire, TX USA -
I can figure out that the 68 represents the width in mm. I can measure that. What is the other value? And how do I determine which I need for my triple crank set?
Last month while in Denmark, I noticed after about the 5th day on the road that my Bottombracket was starting to make some noise under load. That got me to thinking that: 1. I did not do any maintaince on the BB before I left for my trip. I can not say if my LBS has ever performed maintenance on the BB. I have not used my LBS for maintenance for over two years. 2. The Voyager is still running with its original BB form LCD. 3. I now have over 10 000 km on the BB. 4. Maybe I should think about replacing the BB.
Well, Bottombrackets are sized with numbers like below: 68 x 107 68 x 110 68 x 113 73 x 107 73 x 110 73 x 113
I can figure out that the 68 represents the width in mm. I can measure that. What is the other value? And how do I determine which I need for my triple crank set?
The 68mm is the diameter of the shell and the 107mm is the length of the tube.
"Cletus Lee" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Well, Bottombrackets are sized with numbers like below: 68 x 113
I can figure out that the 68 represents the width in mm. I can measure
that. What is the other
Quoted message said:
value? And how do I determine which I need for my triple crank set?
Hi Cletus.
- Unmount the crankarms - Bring out your vernier calliper gauge - Measure the axle (mm)
I have a 127mm for the Acrofobia - it's more than wide enough for a triple. It should be simple to determine what you need once you have the width of the original.
Last month while in Denmark, I noticed after about the 5th day on the road that my Bottombracket was starting to make some noise under load. That got me to thinking that: 1. I did not do any maintaince on the BB before I left for my trip. I can not say if my LBS has ever performed maintenance on the BB. I have not used my LBS for maintenance for over two years. 2. The Voyager is still running with its original BB form LCD. 3. I now have over 10 000 km on the BB. 4. Maybe I should think about replacing the BB.
Well, Bottombrackets are sized with numbers like below: 68 x 107 68 x 110 68 x 113 73 x 107 73 x 110 73 x 113
I can figure out that the 68 represents the width in mm. I can measure that. What is the other value? And how do I determine which I need for my triple crank set?
The 68mm is the diameter of the shell and the 107mm is the length of the tube.
The 68mm is the BB shell width of the assembly (not the diameter). The 117mm is the length of the axle.
R. Horwitz http:/www.helbentcycles.com
"Ian" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Ian must be edykated coz e writed:
Quoted message said:
Cletus Lee must be edykated coz e writed:
Quoted message said:
Last month while in Denmark, I noticed after about the 5th day on the
road
Quoted message said:
Quoted message said:
Quoted message said:
that my Bottombracket was starting to make some noise under load. That got me
to
Quoted message said:
Quoted message said:
Quoted message said:
thinking that: 1. I did not do any maintaince on the BB before I left for my trip. I
can not
Quoted message said:
Quoted message said:
Quoted message said:
say if my LBS has ever performed maintenance on the BB. I have not used my LBS for
maintenance
Quoted message said:
Quoted message said:
Quoted message said:
for over two years. 2. The Voyager is still running with its original BB form LCD. 3. I now have over 10 000 km on the BB. 4. Maybe I should think about replacing the BB.
Well, Bottombrackets are sized with numbers like below: 68 x 107 68 x 110 68 x 113 73 x 107 73 x 110 73 x 113
I can figure out that the 68 represents the width in mm. I can measure
that.
Quoted message said:
Quoted message said:
Quoted message said:
What is the other value? And how do I determine which I need for my triple crank set?
The 68mm is the diameter of the shell and the 107mm is the length of the tube.
The 68mm is the diameter of the shell and the 107mm is the length of the tube.
OOPS, I mean length of the axle.
No, the 68mm is the length of the bottom bracket shell on the bike, and the 107mm is the length of the spindle. The diameters are determined by the threading, which on modern BB's is either English or Italian (or Cannondale's larger size on some of their high-end bikes), and in both cases is a lot less than 68mm.
The earlier advice to see Sheldon Brown's website is good.
Cletus Lee <[email hidden]> wrote: : Last month while in Denmark, I noticed after about the 5th day on the road that my Bottombracket : was starting to make some noise under load. That got me to thinking that: : 1. I did not do any maintaince on the BB before I left for my trip. I can not say if my LBS has : ever performed maintenance on the BB. I have not used my LBS for maintenance for over two : years. : 2. The Voyager is still running with its original BB form LCD. : 3. I now have over 10 000 km on the BB. : 4. Maybe I should think about replacing the BB.
So? Do you really pay the LBS for maintaining your cartridge BB?
If you are lucky you only need to tighten the lock rings of your BB, you need a LBS or a special tool for that.
I never had a problem with BB for 10 000 km (even the Shimano crankset blew up in that time, BB still going strong) but on the trike, the cranks developed a little wobble so I had to tighten the BB after just 500 km.
My P-38 has a 68-118 BB. That is what i always use with triple cranks. Ben Fox <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Cletus Lee <[email hidden]> wrote: : Last month while in Denmark, I noticed after about the 5th day on the
road that my
Quoted message said:
: Bottombracket was starting to make some noise under load. That got me
to thinking that:
Quoted message said:
: 1. I did not do any maintaince on the BB before I left for my trip. I
can not say if my LBS has
Quoted message said:
: ever performed maintenance on the BB. I have not used my LBS for
maintenance for over two
Quoted message said:
: years. : 2. The Voyager is still running with its original BB form LCD. : 3. I now have over 10 000 km on the BB. : 4. Maybe I should think about replacing the BB.
So? Do you really pay the LBS for maintaining your cartridge BB?
If you are lucky you only need to tighten the lock rings of your BB, you need a LBS or a special tool for that.
I never had a problem with BB for 10 000 km (even the Shimano crankset blew up in that time, BB still going strong) but on the trike, the cranks developed a little wobble so I had to tighten the BB after just 500 km.
In article <[email hidden]>, [email hidden] says...
Quoted message said:
Cletus Lee <[email hidden]> wrote: ...I can not say if my LBS has : ever performed maintenance on the BB. I have not used my LBS for maintenance for over two years.
So? Do you really pay the LBS for maintaining your cartridge BB?
If you note my original comment, I have not paid my LBS anything for maintenance for two years (when I decided I could do as good if not better). In the two years before that when the LBS was doing routine maintanance for me, I do not know if that ever included servicing the cartridge.
Quoted message said:
If you are lucky you only need to tighten the lock rings of your BB, you need a LBS or a special tool for that.
After talking with my other P-38 buddy with an even older P-38 with even less attention, I think I can probably manage to get by with a little service on the BB. Buying the special tool is usually cheaper than letting the LBS do the work.
-- Cletus D. Lee Bacchetta Giro Lightning Voyager clee.orgclee.orgOpen ↗ - Bellaire, TX USA -
