SOHC.co.uk Forums > CB500/550

I'm curious as to what this would really do

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Oddjob:
Just checked and the 650 has a 26T primary gear and 61T on the clutch gear. Looks the same so it may be possible. It would depend on the splines matching on the primary gear as Honda did change the primary shaft for the 650. I wonder if anyone has a 650 lump lying about who can check?

Seabeowner:
I have a spreadsheet with with all the gear ratios for for 500/550.
It's a bit convoluted as was done in fits and starts. Also has a bit added for different tyres.
You can swap around with the ratios.
You may notice that it is set to 36 rear sprocket for 550 as that's on my 550F
The internal gearbox ratios are the same for the 500 and 550.
Just the primary ratio changes from 4.0 to 3.063 and as the final reduction changes from 2.0 to 2.176, so they both come out at a very similar speed at revs.

SteveD CB500K0:
Isn’t it amazing how the bikes stand up in those old brochures.

Removing the stand in a photo is one click on my phone nowadays.

I wonder how they did it then?


Sent from my iPhone using Tapatalk

andy120t:
I have an old 650 engine if anyone wants to take it away and take it apart to use bits!

Oddjob:
How complete is it Andy?

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