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Discussion Starter #1
We all know what a lousy rear brake our beloved Tee dub posses, but what can we do? I heard a rumor that there was a rear disc kit, but I haven't uncovered any actual evidence of it yet.



I see many of you have replaced the TW rear brake actuator with one from a larger bike, but does that really do anything??



Thanks!



Tod
 

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It does. But don't get carried away with it. The longer the arm the more pedal movement required to engage it. More is only better to a point.



Stick to one of the tried and true such as the TTR or XT arms.
 

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We all know what a lousy rear brake our beloved Tee dub posses, but what can we do?


Huh? I can lock my rear wheel at any speed on any terrain or surface. How much more braking power do you need?



Now, if you are talking about braking modulation and feel, then I would agree. The rear brake does not have much in the way of progressive feel, it's only a matter of a few ounces more pressure from hard braking to locked up. You have to train your right foot!




I'm spoiled with the ABS on the BMW, but I have never felt that the TW rear brake was any different from dozens of older dirt bikes with drum brakes, which all exhibit this unpleasant characteristic.
 

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Discussion Starter #5
Huh? I can lock my rear wheel at any speed on any terrain or surface. How much more braking power do you need?



Now, if you are talking about braking modulation and feel, then I would agree. The rear brake does not have much in the way of progressive feel, it's only a matter of a few ounces more pressure from hard braking to locked up. You have to train your right foot!




I'm spoiled with the ABS on the BMW, but I have never felt that the TW rear brake was any different from dozens of older dirt bikes with drum brakes, which all exhibit this unpleasant characteristic.
I have 2 motocross bikes with rear discs...there is no comparison. Rear disc brake as well as real front forks would be on the top of my improvement wish list
 

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I'm with the O.P.



It blows. Even by 1974 standards.



Get inside to your brake shoes and make sure they aren't glazed or dusted and that the drum lining inside the rim is within spec. A lot of older bikes' drums can be so worn that they only allow contact in the middle of the shoes. If all's well go with a longer arm and frequent prayer.
 

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There was a member a few years back that attempted to develop a rear disc, but we haven't heard from him for a long time.
 

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I'm with the O.P.



It blows. Even by 1974 standards.



Get inside to your brake shoes and make sure they aren't glazed or dusted and that the drum lining inside the rim is within spec. A lot of older bikes' drums can be so worn that they only allow contact in the middle of the shoes. If all's well go with a longer arm and frequent prayer.
Great, I thought I was done, and now I gotta scrounge up an XT brake arm. Thanks a lot
 

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Discussion Starter #10
I just installed a rear disc brake on my TW on the weekend.




Just kidding, here is the link

.http://tw200.forumotion.com/t268-rear-disc-conversion
Rocky, thanks! LOL

Too bad I have to use a sportbike tire!







Everybody, IMHO the biggest problem with the weaker rear-drum system is the uneven braking pressure during a panic or aggressive breaking maneuver. The front disc will out-brake the rear drum when applied at the same pressure, possibly causing the front to lock up before the back. I have to consciously use more back brake pressure to ensure that the front won't wash out during these situations (Aggressive off-road riding)
 

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Well that problem has a simple answer: Get an older bike with a front drum, haha!



I have owned only one bike in my life with rear disk brakes and it was pretty mazing. All of the 20+ bikes I've owned other than that have drum rears. My W650 is the only bike I own with a front disk brake at the moment. So I'm just used to riding things with drum brakes and don't find myself minding much. That said, I would come in dead last in a hare scramble race. I'm slow and don't much feel like risking getting hurt.
 
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