|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
"mike anderson" wrote in message
... I am building my first bike ever, a mountain bike and, since this is a learning experience, I am using mostly inexpensive used parts together with a Crescent aluminum frame. The problem is that there is a play between the suspension fork (SR Suntour) and the frame, I estimate it to about a 4 mm play. What could be done about it, are thicker ball rings the solution? Any help would be most appreciated, thanks, mike I'm not sure what you mean by "ball rings". I'm guessing ball bearings in a "cage". If the frame & fork were not originally assembled together, then perhaps you have a compatibility problem. The "headset" is the set of 2 bearings that the fork swivels on. The frame has "cups" pressed into the top and bottom of the "headtube". The fork has a "crown race" pressed on to the "steer tube". You may have a mismatch between the crown race and bottom cup. You may also be putting one or both of the "ball rings" upside down. Just guessing... |
Ads |
#2
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
Peter Cole wrote:
I'm not sure what you mean by "ball rings". {opens mouth to say something, but...nah!} Bill "rare restraint" S. |
#3
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
I am building my first bike ever, a mountain bike and, since this is a learning experience, I am using mostly inexpensive used parts together with a Crescent aluminum frame. The problem is that there is a play between the suspension fork (SR Suntour) and the frame, I estimate it to about a 4 mm play. What could be done about it, are thicker ball rings the solution? Any help would be most appreciated, thanks, mike |
#4
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
"mike anderson" wrote in message
... Quoth Peter Cole ... I'm not sure what you mean by "ball rings". I'm guessing ball bearings in a "cage". If the frame & fork were not originally assembled together, then perhaps you have a compatibility problem. The "headset" is the set of 2 bearings that the fork swivels on. The frame has "cups" pressed into the top and bottom of the "headtube". The fork has a "crown race" pressed on to the "steer tube". You may have a mismatch between the crown race and bottom cup. You may also be putting one or both of the "ball rings" upside down. Just guessing... Thanks for helping. I guess that I did not describe my problem very well. What I meant with "ball rings" was indeed: the headset. I realize know that I might have get a new suspension fork which steerer better fits the head tube. I thought that there were standards so that you could use most forks with most head tubes ... Yes, pretty much so. The current standard fork has a 1.125" steerer, some older ones had 1". That may be your problem, or it may be that you have parts from 2 different headsets, where the "crown race" pressed on the fork (is actually part of -- and sold with -- the headset assembly) is not compatible with the cups on the frame (perhaps part of a different headset). It may *not* be that you need a new fork, it may be that you need a new headset. If your frame and fork weren't originally mated, or you buy a new fork with a different diameter, you'll need a new headset anyway. Cups and crown races aren't interchangeable, even if the steer tube diameter is the same -- even if the manufacturer is the same (speaking from experience here). Thanks again, mike |
#5
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
mike anderson said...
By the way, you don't happen to know what size of steerer I need; The diameter of the head tube - outer edges of the upper head race, not inside the full head tube so to say - is 35 mm or 1 3/8 inch? My steerer have an outer dimension of 1 1/8 inch. Perhaps a 1 1/4 steerer would work? Thanks mike Stupid question: did you install the crown race? |
#6
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
Quoth Peter Cole ...
I'm not sure what you mean by "ball rings". I'm guessing ball bearings in a "cage". If the frame & fork were not originally assembled together, then perhaps you have a compatibility problem. The "headset" is the set of 2 bearings that the fork swivels on. The frame has "cups" pressed into the top and bottom of the "headtube". The fork has a "crown race" pressed on to the "steer tube". You may have a mismatch between the crown race and bottom cup. You may also be putting one or both of the "ball rings" upside down. Just guessing... Thanks for helping. I guess that I did not describe my problem very well. What I meant with "ball rings" was indeed: the headset. I realize know that I might have get a new suspension fork which steerer better fits the head tube. I thought that there were standards so that you could use most forks with most head tubes ... Thanks again, mike |
#7
|
|||
|
|||
First time bike builder: play between the fork and frame, what to do?
Quoth Peter Cole ...
You may also be putting one or both of the "ball rings" upside down. Just guessing... By the way, you don't happen to know what size of steerer I need; The diameter of the head tube - outer edges of the upper head race, not inside the full head tube so to say - is 35 mm or 1 3/8 inch? My steerer have an outer dimension of 1 1/8 inch. Perhaps a 1 1/4 steerer would work? Thanks mike |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Bike Stores Endangerd Because of Super Chain Stores? | James Lynx | General | 112 | June 5th 04 01:22 PM |
Steel Frame vs Aluminum Frame w/ Carbon seat stays and carbon fork | ydm9 | General | 6 | April 12th 04 09:42 PM |
New Bikkel Bike - Teething Problems | Elisa Francesca Roselli | General | 19 | December 6th 03 05:18 AM |
2nd-hand track bike - advice needed | hippy | General | 43 | September 16th 03 04:05 AM |
Fork: how to size a fork on a used bike | Mike Kruger | General | 0 | September 12th 03 03:53 AM |