Perfect chainline with nexus 8?
05-24-08 | 09:29 PM
#1
Thread Starter
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Joined: Mar 2007
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Perfect chainline with nexus 8?
I'm starting to wonder if my chain jumping issue is partially caused by my imperfect chainline. I would like to know how I can get it done. I have a Nexus 8 with a 103mm BB. I don't know what else to provide. Someone please teach me how to make the perfect chainline on this.
05-24-08 | 09:42 PM
#2
Call me The Breeze
Joined: Aug 2006
Posts: 3,702
Likes: 8
From: Cooper Ontario
Bikes: 2004 Litespeed Siena, 1996 Litespeed Obed, 1992 Miele (unknown model), 1982 Meile Uno LS.
You have to measure from the center plane of the frame to the chainring, and the center plane to the sprocket. They should be the same. Compare and adjust accordingly.
05-25-08 | 06:56 AM
#6
Call me The Breeze
Joined: Aug 2006
Posts: 3,702
Likes: 8
From: Cooper Ontario
Bikes: 2004 Litespeed Siena, 1996 Litespeed Obed, 1992 Miele (unknown model), 1982 Meile Uno LS.
That would do the trick. You could also get a BB spacer to move it over. How's your chain tension? 2.5mm difference isn't perfect, but I doubt it would cause a thrown chain.
05-25-08 | 07:10 AM
#7
You've gotten a fair piece of advice here.
1 - Your rear cog can usually be flipped to change the chainline, usually 43/48 with the stock one.
2 - You can change the chainline on the crank with a different bottom bracket. You can adjust the cranks out by a millimeter or so by putting a spacer between the bracket and shell.
1 - Your rear cog can usually be flipped to change the chainline, usually 43/48 with the stock one.
2 - You can change the chainline on the crank with a different bottom bracket. You can adjust the cranks out by a millimeter or so by putting a spacer between the bracket and shell.
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This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
