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Fork replacement
#1
A friend of mine drove her car into her garage with her Giant road bike on the rack on top. She bought it a few yrs ago at some discount place that no longer sells bikes. It bent and cracked the fork where it forks. I'm not sure where to purchase a replacement for it. It is a 1-1/8" diameter top tube (I'm not sure of the names of parts) I straightened it pretty much but the welds (it is aluminum or some light metal) are cracked and the collar is broken. The rake seems quite large ~70mm compared to all the forks is see out there. Any suggestions?

Mike j.
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#2
(06-20-2015, 06:32 PM)mhj96813 Wrote:  A friend of mine drove her car into her garage with her Giant road bike on the rack on top. She bought it a few yrs ago at some discount place that no longer sells bikes. It bent and cracked the fork where it forks. I'm not sure where to purchase a replacement for it. It is a 1-1/8" diameter top tube (I'm not sure of the names of parts) I straightened it pretty much but the welds (it is aluminum or some light metal) are cracked and the collar is broken. The rake seems quite large ~70mm compared to all the forks is see out there. Any suggestions?

Mike j.

^^^^^^^^^^^^^^^^

Aluminum cannot be straightened and will break.

http://www.nashbar.com/bikes/SubCategory_10053_10052_204715_-1_204649_204649

http://www.performancebike.com/bikes/SubCategory_10052_10551_400206_-1_400002_400911
Never Give Up!!!
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#3
(06-20-2015, 07:51 PM)GeorgeET Wrote:  
(06-20-2015, 06:32 PM)mhj96813 Wrote:  A friend of mine drove her car into her garage with her Giant road bike on the rack on top. She bought it a few yrs ago at some discount place that no longer sells bikes. It bent and cracked the fork where it forks. I'm not sure where to purchase a replacement for it. It is a 1-1/8" diameter top tube (I'm not sure of the names of parts) I straightened it pretty much but the welds (it is aluminum or some light metal) are cracked and the collar is broken. The rake seems quite large ~70mm compared to all the forks is see out there. Any suggestions?

Mike j.

^^^^^^^^^^^^^^^^

Aluminum cannot be straightened and will break.

http://www.nashbar.com/bikes/SubCategory_10053_10052_204715_-1_204649_204649

http://www.performancebike.com/bikes/SubCategory_10052_10551_400206_-1_400002_400911

I understand I was trying to straighten it to measure the rake. I get close to 70m. I think those links you sent were all 43mm rake. That was my real question. Where to get a higher rake fork. I can't seem to find any.

Thanks for your reply
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#4
How about some pictures so that we can understand what you are writing about?  
Nigel
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#5
Seems hard to believe you were able to straighten it accurately enough to measure a 3mm difference. Unless you have a pretty precise jig, I would think you're basically guessing at the specs for the old fork regardless.

I would also check out the frame pretty carefully for any damage before I put a new fork on it.
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#6
Do not know how you can tell rake from photos or measure rake on bend forks. The 70mm figure you give is a lot, do not know how you got 43mm from looking at photos

Consider contacting Giant for replacement fork.

Send photos. what model etc, and yes check the frame too.
Never Give Up!!!
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#7
(06-22-2015, 08:31 AM)DaveM Wrote:  Seems hard to believe you were able to straighten it accurately enough to measure a 3mm difference. Unless you have a pretty precise jig, I would think you're basically guessing at the specs for the old fork regardless.

I would also check out the frame pretty carefully for any damage before I put a new fork on it.

Ahh - I clearly misread the numbers you were posting.

That said, I'd still be a little skeptical of numbers you get by measuring a fork you straightened by hand. 27mm is a pretty big jump, unless you're going from suspension to rigid or vice versa. The rake on a suspension fork can change quite a bit from completely unweighted to how it is expected to sit when being ridden.
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