SOHC.co.uk Forums > CB500/550
CB550k1 US Import - UK registration
Orcade-Ian:
Whilst doing a bit more zinc plating I had the chance to measure things - on mine the shafts are 8.5 mm down the rocker spindle bore and the pegs with the O Rings protrude 6.5 mm from the end cap casting, so there is approximately a 2 mm gap. The peg diameter is about 11.5 mm so a 3mm section O ring would compress to push both shafts tight up to the shoulder - not sure if that would eliminate rotation though. Not sure I'm sufficiently concerned anyway with the mileages I'll be doing!
Ian
Bryanj:
Ian, the yanks just stuff an O ring down the hole fore the pin to push on and stop rotation
Orcade-Ian:
Thanks Bryan,
That was my conclusion - might not do any good but certainly can't do any harm, which is always the safest option.
Ian
Seabeowner:
There were the 4 long shafts on the 500 rockers up to 2006337 and then they switched to the 8 short shafts which went right through the 550s also up to around the F2 and K3s according to parts list. All three of the 500/550 engines that I've had apart recently have the 8 shafts.
I bought a kit from DSS to uprate to the 4 pinned shafts for one of mine. (kit comes with cover, shafts and pins, but not rockers). 12300-390-305
Sesman:
That’s not correct. The later models had 4 long shafts, pinned. Just like the attached.
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