Peugeot Bike fork
07-26-17, 01:04 PM
#1
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Peugeot Bike fork
Hi there
I had an accident and broke my front bike fork. The guy in the store suggested that I go online and get a new one.
He said that I needed a fork for a 60/61 frame. Does this make any sense?
I can't seem to find any online.
I had an accident and broke my front bike fork. The guy in the store suggested that I go online and get a new one.
He said that I needed a fork for a 60/61 frame. Does this make any sense?
I can't seem to find any online.
07-26-17, 02:23 PM
#2
Mechanic/Tourist
Probably referring to a 60/61cm frame size. What you need to get is a fork that has a steerer tube (part the goes through the frame) at least as long as your current one. It can be cut to size if too long. If it is threaded the threads need to go down far enough to allow full engagement of the headset. The inner diameter of the steerer on a threaded fork and outer diameter on a threadless needs to be the same if you are to reuse the same stem. Ideally the fork rake and blade length would be the same as well (or a combo that results in the same trail). On a threaded fork the bottom seat for the headset needs to be the same diameter. I'd recommend getting assistance from a bike shop/co-op.
Last edited by cny-bikeman; 07-27-17 at 11:07 AM.
07-26-17, 03:55 PM
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Besides steerer length you need to understand rake and trail when buying a for.
More importantly did you compromise/bend the frame with the accident? If you hit hard enough to break the fork, there is a good chance the frame is also damaged.
Understanding Bicycle Frame Geometry - CyclingAbout
More importantly did you compromise/bend the frame with the accident? If you hit hard enough to break the fork, there is a good chance the frame is also damaged.
Understanding Bicycle Frame Geometry - CyclingAbout
07-26-17, 05:15 PM
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To get a close match, you should measure the overall length of your fork's steerer tube, as well as the length of the threaded portion. When shopping for a new fork, match those as closely as possible. If your frame size is 60 or 61 cm, your steerer tube's going to be longer than most. If you buy one that's too short, it won't reach all the way through your frame's head tube.
Also, since you mentioned Peugeot... What year is your bike? If it's from the early 1980s or before, your fork may have a French threaded steerer tube. You can swap a French-threaded fork for a more common non-French one, but it may require replacing your headset, stem, and handlebar as well. On the other hand, if your bike is from the mid-1980s or newer, Peugeot had switched away from French sizing and threading by then and common parts will fit.
Sheldon Brown's web site has more information on French sizing and threading if you want details:
https://www.sheldonbrown.com/velos.html
Also, since you mentioned Peugeot... What year is your bike? If it's from the early 1980s or before, your fork may have a French threaded steerer tube. You can swap a French-threaded fork for a more common non-French one, but it may require replacing your headset, stem, and handlebar as well. On the other hand, if your bike is from the mid-1980s or newer, Peugeot had switched away from French sizing and threading by then and common parts will fit.
Sheldon Brown's web site has more information on French sizing and threading if you want details:
https://www.sheldonbrown.com/velos.html
