SOHC.co.uk Forums > CB500/550

Top / bottom yoke race advice

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Davelu88:
I would say about 3 mill

Bryanj:
Think i used 1mm on the last set of tapers i fitted, if you go too thin the bottom yoke binds on the frame

Oddjob:
I would tighten the dust cover down, pull the yoke up and sort of guess or measure, if you can, just how much it's coming up. It's clear you need a spacer underneath the bottom race, tapers normally need 3mm but as yours are not taper I couldn't say what you'd need but do the above and see if that helps. The internal diameter of the washer should be 30mm or if a washer came with the kit measure that and just order a thinner one. Maybe get a 1mm and a 2mm just in case.

Sesman:

--- Quote from: Bryanj on July 03, 2022, 12:02:05 AM ---Think i used 1mm on the last set of tapers i fitted, if you go too thin the bottom yoke binds on the frame

--- End quote ---

Yes I found that. But at 3mm I had very few threads on the stem and the original headlamp ears didn’t fit correctly….too much space. A 2mm spacer would not have cured it. Trigger has a solution,  it it involves machining work. I reverted to the original ball solution. A bit dear from DS, but they work.

Davelu88:
I think I naively thought that when I bought something that said 550F it would be plug & play & not generic , anyways have had to dig deep and purchase the genuine kit from DS.  Lesson learnt and thx for all the advice:)

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