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Can discs be installed on a 'pre'-disc frame?

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Can discs be installed on a 'pre'-disc frame?

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Old 01-26-07, 02:30 PM
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Can discs be installed on a 'pre'-disc frame?

I have an older Cannondale bike, a 1997 with traditional brakes. I'd like to install discs. How would I go about it? Is there some kind of adapter available? The frame is an F 1000. Thanks.......
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Old 01-26-07, 02:36 PM
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Not really a viable option unless your frame already has disc tabs welded to the seatstay and the fork. I don't think there is any bolt on adapter that is 100% reliable. Modifying the frame is an option, but a costly one.

Not to mention you'll need new wheels, or at least hubs.
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Old 01-26-07, 03:11 PM
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Easy solution: swap the fork for a disc-compatible one, keep the rear as is. Pretty certainly you have no real need for a rear disc (Well, probably you don't need a front one, either, but that's another matter.) Most of the braking happens at the front.
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Old 01-26-07, 03:19 PM
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Actually, lots of people have had good luck with the Brake Therapy mount.

https://www.bikemag.com/gear/braketherapy/
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Old 01-26-07, 09:11 PM
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Ah! An idea about my disc quandry...

Originally Posted by LóFarkas
Easy solution: swap the fork for a disc-compatible one, keep the rear as is. Pretty certainly you have no real need for a rear disc (Well, probably you don't need a front one, either, but that's another matter.) Most of the braking happens at the front.
That makes since. I do remember reading somewhere that the braking ratio for front vs. rear wheel is something like 75% to front, 25% brake power to rear. I believe its similar to that ratio for all vehicles, bikes, motorcycles, cars, etc. Should've thought of that! But it will probably be at least somewhat costly to buy a half-decent front shock, and a new disc compatible rim, hub, etc. The second idea(comment) is even better. I probably dont 'really' need to switch to discs in the first place. I just remember many times when the rims get wet and the brakes quickly fail, or at least drop off significantly..
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Old 01-26-07, 11:16 PM
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Old 01-26-07, 11:47 PM
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Originally Posted by wethepeople
Actually, lots of people have had good luck with the Brake Therapy mount.

https://www.bikemag.com/gear/braketherapy/
Interesting product, but for $150 I can buy a new frame (with some luck), or a very good used one (no luck needed).

No matter how you spin it, 150 bux is insane for such a device.
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Old 01-26-07, 11:51 PM
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Originally Posted by Dunvegan67
I have an older Cannondale bike, a 1997 with traditional brakes. I'd like to install discs. How would I go about it? Is there some kind of adapter available? The frame is an F 1000. Thanks.......
Rather than going with discbrakes, I would suggest that you take into consideration the Magura hydraulic rimbrakes. I guarantee that you will get more stopping power than you'll ever need, expecially with the Magura HS-33.
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Old 01-27-07, 12:34 AM
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Originally Posted by wroomwroomoops
Interesting product, but for $150 I can buy a new frame (with some luck), or a very good used one (no luck needed).

No matter how you spin it, 150 bux is insane for such a device.
Such is deffinatly true, but if the frame has sentimental value it's a great option as opposed to getting tabs brazed on.
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Old 01-27-07, 12:35 AM
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Originally Posted by wroomwroomoops
Rather than going with discbrakes, I would suggest that you take into consideration the Magura hydraulic rimbrakes. I guarantee that you will get more stopping power than you'll ever need, expecially with the Magura HS-33.
I've ridden these brakes but only on trials bikes, how is the modulation with them?

I know they are awsome for locking and holding but I dont know about modulation.
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Old 01-27-07, 05:05 AM
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Its up to you what you decide. Personally, I have a circa 1999 bike that I was considering putting disk brakes on, but after looking at the cost of new wheels, an adapter for the rear for discs, a new fork, and the cost of the brakes themselves, I was at a significant percentage of the bike's new cost, and was over how much the bike would sell for used. Instead, if I wanted a major brake upgrade, I could replace the existing brakes with either XTR or Avid Single Digit Ultimates. It won't have the rain/mud stopping power of discs, but the cost difference is so great between the two, I'm better off buying a new DS bike that has discs rather than sinking lots of money into a retrofit.
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Old 01-28-07, 05:27 PM
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Originally Posted by Dunvegan67
...I probably dont 'really' need to switch to discs in the first place. I just remember many times when the rims get wet and the brakes quickly fail, or at least drop off significantly..

There is no magical solution, but Kool Stop Salmon brake pads are quite effective in the rain. The "Mountain" ones for v-brakes and canti with threaded posts are great. The pads are shaped with "v-like" fins that do a fairly good job at evacuating water, so they do wonders in rain or snow... until they are worn out.

Not as good as disc brakes if you ride at high speed in traffic, even in the rain, but a rather cheap and effective solution.
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