Sorry-last dumb question for a while
04-07-06 | 05:06 PM
#1
Thread Starter
Senior Member
Joined: Mar 2005
Posts: 2,207
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From: Madison, WI
Sorry-last dumb question for a while
Sorry i;ve been asking a lot of dumb questions lately, i promise this is my last one for a while.
After examining my ride more closely, a can see my chainline is clearly out of whack--i dont know how this can be--I've got formula hubs on my otherwsie stock bianchi pista--the measurement match up, so i dont know whats wrong--the cog is too far out. Here comes the dumb question--there looks like there is a small ring between the cog and the edge of the hub where the threading starts--i had some guy at an lbs install the cog and lockring so i dont know if he used a spacer---is this a spacer? I mean, cogs are flat--they don't have a cyclindrical ring on one side, right? I know this is a dumb question but there is only 1 lbs w/ mechanics that really knows about track bikes up here and they are booked this weekend for repairs. If its just a spacer i'll have the dude that installed it just take it off--otherwise i have to drive 30 mi to (Sk)Appleton to an lbs who knows about track bikes.
After examining my ride more closely, a can see my chainline is clearly out of whack--i dont know how this can be--I've got formula hubs on my otherwsie stock bianchi pista--the measurement match up, so i dont know whats wrong--the cog is too far out. Here comes the dumb question--there looks like there is a small ring between the cog and the edge of the hub where the threading starts--i had some guy at an lbs install the cog and lockring so i dont know if he used a spacer---is this a spacer? I mean, cogs are flat--they don't have a cyclindrical ring on one side, right? I know this is a dumb question but there is only 1 lbs w/ mechanics that really knows about track bikes up here and they are booked this weekend for repairs. If its just a spacer i'll have the dude that installed it just take it off--otherwise i have to drive 30 mi to (Sk)Appleton to an lbs who knows about track bikes.
04-07-06 | 05:28 PM
#4
Thread Starter
Senior Member
Joined: Mar 2005
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From: Madison, WI
no camera phone or digital cam--sorry---all money spent on bike & new wheels
Let me try and explain better--looking at the hubfrom inside out--there is the surface that extends from the flange right before the threading. Next to that surface is what appears to be a ring next to the cog so looking at the back of the wheel from lef tot right i see--hub surface--ring--cog--
Let me try and explain better--looking at the hubfrom inside out--there is the surface that extends from the flange right before the threading. Next to that surface is what appears to be a ring next to the cog so looking at the back of the wheel from lef tot right i see--hub surface--ring--cog--
04-07-06 | 05:32 PM
#6
Thread Starter
Senior Member
Joined: Mar 2005
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From: Madison, WI
i see the same thing on the stock binahci wheelsetthat came with the bike
if only i had a chainwhiwp or lockring tool
why would the lbs dud put a spacer on? granted i just brought in the back wheel to have him install the cog and lockring but still-=-is that like standard practice or something?
if only i had a chainwhiwp or lockring tool
why would the lbs dud put a spacer on? granted i just brought in the back wheel to have him install the cog and lockring but still-=-is that like standard practice or something?
04-07-06 | 05:33 PM
#7
meet the mets
Joined: Jun 2005
Posts: 1,555
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From: Bucktown, Chicago
Bikes: Raleigh conversion (hours spent making it look like a Pista); Porter Track, Samson Track, Leto Roadie.
I'm leaving for Madison in about half an hour...I'll bring my chainwhip if you want.
04-07-06 | 05:39 PM
#8
King Among Runaways
Joined: Mar 2005
Posts: 4,215
Likes: 1
From: MKE
Bikes: 2004 Bianchi Pista, Cannondale Track, Soma Pake, Schwinn Breeze
If there was a spacer on the hub, how would your lockring thread on completely?
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04-07-06 | 05:48 PM
#10
Back to being a Clyde....
Joined: Oct 2004
Posts: 1,544
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From: Santa Clara
Bikes: Giant OCR1(specialized carbon seatpost,Terry Fly sadle, Syntace C2): Leader TT frame, Easton EC70fork, Aerolite bars, nashbar bullhorn, Titan Wheels: Fuji Track Pro(2003)
Some cogs do have a "flange" on one side which could be mistaken for a spacer..
I will try to find mine and take a picture.
Does it look similar to this?
That is standard on DA cogs..
I will try to find mine and take a picture.
Does it look similar to this?
That is standard on DA cogs..
Last edited by ZappCatt; 04-07-06 at 06:09 PM.
04-07-06 | 07:22 PM
#17
Minneapolis
Joined: Aug 2004
Posts: 873
Likes: 1
From: Just under Minneapolis
Bikes: 1998 Stumpjumper Pro, SE Draft, 1984 Bianchi ATB, 1980? Raleigh Comp GS, Civia Loring
....?
I know there are variations for every hub / cog combination. Sheldons' Dictionary / Chainline will give you all sorts of figures for you to pour (pore?) over while you ter to find the problem.
I have Sugino RD in 3/32, Campy Record hub with 1/8 and the line is off by maybe 1-2mm, due, I believe, to the fact that there's a difference in spec between the components. The BB is "correct" according to all sources.
Frustrating, isn't it? On paper it's supposed to work. Indeed, it does, but imperfections are seen nonetheless.
I know there are variations for every hub / cog combination. Sheldons' Dictionary / Chainline will give you all sorts of figures for you to pour (pore?) over while you ter to find the problem.
I have Sugino RD in 3/32, Campy Record hub with 1/8 and the line is off by maybe 1-2mm, due, I believe, to the fact that there's a difference in spec between the components. The BB is "correct" according to all sources.
Frustrating, isn't it? On paper it's supposed to work. Indeed, it does, but imperfections are seen nonetheless.
04-08-06 | 08:08 AM
#25
Frozen in carbonite
Joined: Oct 2004
Posts: 805
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From: Ottawa
Bikes: '85 Full Cycle Cycle.
If the bike is stock aside from the new wheel, the ring should be on the outside of the spider and you shouldn't have any problems. Have you considered that maybe the drive-side crank isn't entirely on the spindle?