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Discussion Starter #1
Is their any rear shoe adjustment on a 71 rear hub? Im trying to run a cable and the throw on the arm is so long I keep running out of cable before the brakes engage. Any ideas????
 

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Move the arm on the brake cam. Set it up so you have to move the arm a considerable amount to get the cable end through it. But not so much that the brakes are on all the time. Normal adjustment is done via the rod or cable....it's normal to have to move the brake arm to get the cable/rod through it.
In other words..the cable/rod is not supposed to move the arm from the completely relaxed position to the point where the brakes are applied. The arm should already be in tension to get the cable/rod through it.
Also might want to check the shoe wear, make sure the shoes aren't completely worn out.
JohnnyB
 

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Move the arm on the brake cam. Set it up so you have to move the arm a considerable amount to get the cable end through it. But not so much that the brakes are on all the time. Normal adjustment is done via the rod or cable....it's normal to have to move the brake arm to get the cable/rod through it.
In other words..the cable/rod is not supposed to move the arm from the completely relaxed position to the point where the brakes are applied. The arm should already be in tension to get the cable/rod through it.
Also might want to check the shoe wear, make sure the shoes aren't completely worn out.
JohnnyB
 

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everything jonny b. said (he's really smart you know). but i add another detail. at the point that the shoes make contact with the drum, the arm should be slightly before 90 degrees to the cable so that at the point of maximum braking (i.e. lock-up force), the arm forms a right angle to the cable. this will yield the best feel and efficiency for your riding pleasure and safety.
parks
 

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everything jonny b. said (he's really smart you know). but i add another detail. at the point that the shoes make contact with the drum, the arm should be slightly before 90 degrees to the cable so that at the point of maximum braking (i.e. lock-up force), the arm forms a right angle to the cable. this will yield the best feel and efficiency for your riding pleasure and safety.
parks
 

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Yeah...by all means, what he said.
If you look real close, a lot of Honda drums have a small dot on the brake arm and a small dot on the brake cam...if you line them up when the arm is installed it will place the arm and cam at the best point for leverage ratio.
You should only use my suggestion of moving the arm on the cam as a last resort...and never more than like one spline.
JohnnyB
 

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Yeah...by all means, what he said.
If you look real close, a lot of Honda drums have a small dot on the brake arm and a small dot on the brake cam...if you line them up when the arm is installed it will place the arm and cam at the best point for leverage ratio.
You should only use my suggestion of moving the arm on the cam as a last resort...and never more than like one spline.
JohnnyB
 
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