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Rear brake rod - 78 DT250

  • 87warrior
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Rear brake rod - 78 DT250 was created by 87warrior

The rear brake actuating rod on my 78 DT250 is bent up.

 

How is this rod supposed to look? In the parts diagrams this looks pretty straight. Before I start trying to reshape it, an example of what it should look like would be very handy. 

Thanks! 
1978 DT250
22 Jun 2022 21:02 #1

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Replied by MarkT on topic Rear brake rod - 78 DT250

Looks pretty good to me?  It does have to kind of jog over. 

Look at pictures of similar bikes...  one thing we actually used to do on purpose was step on it in the middle and put a bow into the rod.  This "modification" makes the rear brake have a little bit more progressive feel and less likely to lock up easy out on the trails.  Someone might have done that a little on yours. 

Or maybe I'm missing something...  can't sleep and it's pretty late here. 

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1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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23 Jun 2022 02:01 #2

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Replied by 87warrior on topic Rear brake rod - 78 DT250

Thanks! This bike has a lot of 'fall' evidence so I wasn't sure if the brake rod was bent up due to an accident. I certainly didn't want to straighten it out if it is supposed to have a bend in it. 

This random bike from the internet has a brake rod that looks pretty darn straight.
 
1978 DT250
Last edit: 23 Jun 2022 10:22 by 87warrior.
23 Jun 2022 08:05 #3

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Replied by Sneezles61 on topic Rear brake rod - 78 DT250

From the pictures, it seems the first one doesn’t rise as high from the brake pivot as the second one does… or it’s just the angle of the dangle…
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23 Jun 2022 08:19 #4

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Replied by MarkT on topic Rear brake rod - 78 DT250

Take a picture from the same angle.  Comparing apples and oranges. 

And like I said, common "mod" on Yamaha was step on rod with foot near middle of run to bow it down...  bowing in any direction works...  Really helps keep the powerful Yamaha rear brake from locking up so easy out on the trails.  I still do it on all my old rod operated brake bikes. 

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1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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23 Jun 2022 10:02 #5

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Replied by 87warrior on topic Rear brake rod - 78 DT250

While not the exact same angle as the orange bike I found online, it does provide a similar perspective of the brake rod. I can get a better pic if it ever stops raining.

 

The location of the bends seem deliberate, even if they are not factory.  

This bike is a work in progress and I am starting at the back and working my way forward, so rear brakes are the first thing I am working on now that it runs and drives (rides?). 

 
1978 DT250
23 Jun 2022 10:29 #6

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Replied by MarkT on topic Rear brake rod - 78 DT250

If it bugs you you could try to bend it back up.  The downward bend looks like someone tried the modification I mentioned..  I would have tried for a more gentle bow in the rod so it has as much progressive "give" as possible.  That's hard to do on the bikes with the brake rod above the swingarm though.  I'd leave it alone if it was mine. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
23 Jun 2022 11:20 #7

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Replied by 87warrior on topic Rear brake rod - 78 DT250

Thanks MARKT. I will leave it alone for now since this bike is certainly not a factory correct restoration piece 

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1978 DT250
23 Jun 2022 11:56 #8

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