Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: PennoK3 on June 04, 2020, 08:22:27 PM
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Evening all
The original rear wheel for my 550 K3 was in a fairly shabby condition so I decided the most economical option was to purchase a used rear wheel in very good condition with excellent chrome sold as a CB550 73 - 77. However, now I have come to assemble, the rear brake plate fouls the circumference of the rear brake drum where previously it sat just inside the drum. Comparing the wheels side by side (should have done it sooner) the cooling fin pattern is different. Has anyone experienced this before? I am not sure now what the wheel is from. I guess the easiest solution would be a different brake plate but again not sure which model would be compatible. Any advice gratefully received.
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I have put some pictures with measurements somewhere on this forum, don't ask me where. There are two different brake plates with different size brake cam, different brake shoes ;)
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Photos from Trigger
F2/K3
[attachimg=1]
500/4 and early 550k and early 550F1.The hub was changed half way through production in 1976
[attachimg=2]
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Thanks for the responses. I'll have a closer look this weekend.
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I came accross this years ago and the complete wheel will fit but spacers have to be played with
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Just had a measure. The old old wheel internal hub between spoke flanges as per the photos above is 48.4mm, the new old wheel is 45.5mm. Sprocket side looks identical.
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I would just strip the old K3 wheel down, new rim, new spokes and bearings ;)
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Most obvious external difference is the cooling fins around the drum. New old wheel has 3 high ones and one lower one. Old old wheel also has 4 but all the same size.
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Took a punt on a 76 brake plate for £15.00 on Ebay and it fits. Realise I may have to adjust the spacers but that's not an issue.