Wrong BB axle length...
07-21-05 | 07:59 AM
#26
Thread Starter
Videre non videri
Joined: Sep 2004
Posts: 3,208
Likes: 4
From: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
Lateral range, you mean?
07-25-05 | 05:18 PM
#27
Thread Starter
Videre non videri
Joined: Sep 2004
Posts: 3,208
Likes: 4
From: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
Update!
Well, I got my ES51 68x121 BB today.
Turns out it isn't symmetrical...
The drive side is 4 mm longer than the left side.
Since the entire axle is 8 mm longer than my 113 mm one, that means the right side is actually 6 mm farther out than my current one.
Now, the chainline was measured to be 42.5-43 mm. Adding 6 mm will bring that to 48.5-49 mm. Right in the middle of the 47.5-50 mm range suggested on Sheldon Brown's site.
Now, if only I'd known that pulling a crank was so damn hard when I last ordered parts... I'm sitting here without a crank puller, and no bike shops near by.
If I'm lucky, a friend om my brother's has one, but otherwise, it's a nice 7-14-day wait for me until I can get a crank puller...
Well, I got my ES51 68x121 BB today.
Turns out it isn't symmetrical...
The drive side is 4 mm longer than the left side.
Since the entire axle is 8 mm longer than my 113 mm one, that means the right side is actually 6 mm farther out than my current one.
Now, the chainline was measured to be 42.5-43 mm. Adding 6 mm will bring that to 48.5-49 mm. Right in the middle of the 47.5-50 mm range suggested on Sheldon Brown's site.
Now, if only I'd known that pulling a crank was so damn hard when I last ordered parts... I'm sitting here without a crank puller, and no bike shops near by.
If I'm lucky, a friend om my brother's has one, but otherwise, it's a nice 7-14-day wait for me until I can get a crank puller...
07-25-05 | 11:21 PM
#28
kipuka explorer
Joined: Apr 2004
Posts: 3,297
Likes: 2
From: Hilo Town, East Hawai'i
Bikes: 1994 Trek 820, 2004 Fuji Absolute, 2005 Jamis Nova, 1977 Schwinn Scrambler 36/36
Happiness is a full toolbox.
You say the BB spindle isn't symmetrical, but was the old one symmetrical? That is, maybe the difference is still split between the two sides, and none of them are symmetrical. ?
You say the BB spindle isn't symmetrical, but was the old one symmetrical? That is, maybe the difference is still split between the two sides, and none of them are symmetrical. ?
__________________
--
-=- '05 Jamis Nova -=- '04 Fuji Absolute -=- '94 Trek 820 -=- '77 Schwinn Scrambler 36/36 -=-
Friends don't let friends use brifters.
--
-=- '05 Jamis Nova -=- '04 Fuji Absolute -=- '94 Trek 820 -=- '77 Schwinn Scrambler 36/36 -=-
Friends don't let friends use brifters.
07-26-05 | 02:59 AM
#29
Thread Starter
Videre non videri
Joined: Sep 2004
Posts: 3,208
Likes: 4
From: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
The first one was (if there's a difference, it's 1 mm or less).
The second one clearly isn't.
The drive side sticks out a lot more.
The second one clearly isn't.
The drive side sticks out a lot more.
