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Old September 29th 09, 03:21 PM posted to rec.bicycles.tech
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Default Broken steel road bike fork

On Sep 29, 5:42*am, jim beam wrote:
On 09/28/2009 09:37 PM, wrote:



So, I've been noticing that the front brakes of my road bike
were acting "grabby" in that the front would shimmy pretty
badly just as I'm coming to a stop. *The rims felt a little
sticky, maybe some Gatorade got on them and it hasn't really
rained in a while. *I cleaned the wheels last night and rode
into work today. *It was still bad, but didn't seem as bad.
This has been going on for a week, I didn't think anything of
it. *I decided to not ride after work and just come home, coming
down the driveway, the grabby-ness was really pronounced, so
I figure that the brake pads must be contaminated with something.
When I took the wheel off, my heart skipped a beat. *Without much
effort, this is the result:


http://www.bitrealm.com/misc/fork/p1000783.jpg
http://www.bitrealm.com/misc/fork/p1000784.jpg
http://www.bitrealm.com/misc/fork/p1000785.jpg


It was hanging by no more than 2mm of steeel. *I shudder when I
think of the roads I was about to go on, including one really
bad bump at the bottom. *I don't think it would have held together
and when you lose the front like this, it's going to be bad.


The shimmy was the wheel moving back and forth due to the fork
leg being fatigued. *There hasn't been any accident damage since
I put this fork on the bike. *The crack was almost all the way
through, starting from the BACK of the fork leg.


chrome plate is bad for fatigue - it contains many fatigue initiators.

for the future, consider quality cfrp - unless abused, it's pretty much
"fatigue proof".


This fork was on the bike for about 8 years and had probably around
12K miles on it in that time.

I would like to find a 1" threaded replacement that has eyelets for
fenders,
but they seem pretty thin on the ground. I can find the exact same
fork
shown here (in black) that I could still buy. It was a 200 mm steerer
tube with 35mm of threading. Cut, it is 190mm with 25mm of threading.
The one shown here was made for 27" wheels and I just run long reach
calipers. I had to have the crown race cut from 27 to 26.4mm.

If not, any 1" threadless forks with eyelets and room for fenders?

Anyone, Bueller?
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