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Bad Idea?

Old 09-20-08, 01:03 PM
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sp3cialed
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Bad Idea?

So I have this pretty nice shimano SLR brake lying around. It's a rear brake and I took it to the LBS and they said they couldn't make it fit on the front fork cause the bolts not long enough, and he said it wouldn't be a good idea also. Anyways, I got home and fiddled around with it and put it in between the steerer tube. Is this a bad idea? I won't use the brake much. I've been brakeless for 3 days now and have been completely fine, but it's just a safety precaution cause you just never know. It seems sturdy but what do I know?
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Old 09-20-08, 02:20 PM
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SingleSpeeDemon
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I wouldn't do it myself. For the cost of a front caliper, I would rather have the piece of mind of having equipment that it used for its designed purpose.
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Old 09-20-08, 02:34 PM
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BMonei
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There's a lot of pressure on that bolt when you're braking the rim. Think about it.
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Old 09-20-08, 03:00 PM
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Sheldon says OK:

Front: Here are 3 options:

"1. Drill out the back of the fork crown (8 mm or 5/16 drill bit). This is actually quite easy to do with a handheld electric drill, since you're only enlarging an existing hole.

That's it if you can get two front calipers. Sometimes, you may have to deal with a pair of brakes, with one long and one short bolt. If you used the long one in back, you can use the short one in front two different ways:

2. Drill out the back of the fork crown and use an extra-long recessed nut. These nuts are commonly available for use in carbon fiber forks.

3. Use the short recessed nut, but don't put it through the back of the fork. Instead, push it up into the inside of the steerer from the bottom. You can reach a 5 mm Allen wrench in through the hole in the back of the fork, and poke the short caliper bolt in from the front.

You may need to shorten the recessed nut slightly to get it to fit inside your steerer. "
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Old 09-20-08, 03:29 PM
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Just bolting it though one side of the steerer tube means that all the rotational force generated (calculate by determining force applied at rim x distance from rim to bolt axis) is resisted by a single thickness of the fork tube. Imagine sticking a screwdriver in the hole and pulling upwards as hard as you can.

Just buy the right brake.
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Old 09-20-08, 08:02 PM
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There is not difference between front and back brakes (well most anyway), so why buy a whole new brake?

The way you have it is one of Sheldon options, but for the price of an extra-long recessed nut why not do that? Seems like it would be the best balance of cost-effectiveness and safety.
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