SOHC.co.uk Forums > CB350/400
Does anyone know the diameter of the CB400F2 steering shaft at the base?
McCabe-Thiele (Ted):
I am trying to find the diameter of the steering shaft where the lower ball race sits at the bottom yoke.
As my lower race has not yet to be removed not sure if the diameter increases where the bearing sits. The shaft itself measures approximately 26.7 mm in diameter.
The place I am trying to source the taper bearing kit from bearing says the Top Bearing is 48.5mm OD: 26.0 mm ID that's right I think.
He gives the lower bearing as 50.00mm OD:30.0mmID. Unless there is a bigger diameter where the bearing sits I think the OD is too big.
Anyone here know the answer please ?
K2-K6:
Someone must have one out to measure for accuracy.
But I "think" they may be something odd like 1 1/8 inch as legacy from english bicycles, making something like 28.55mm
Needs checking though. The crown race usually flares though to allow you to drop the bearings down the stem and just drift it home for the very last bit.
Deano400:
Ignore the 0.01mm I haven't cleaned it.
ka-ja:
Definately 30mm as already posted.
McCabe-Thiele (Ted):
--- Quote from: ka-ja on February 13, 2021, 12:25:22 PM ---Definately 30mm as already posted.
--- End quote ---
Thanks ka-ja & Deano400 I'm dropping my steering shaft & yoke at my BiL on Monday so he can remove the bottom race in a Covid secure environment.
I can order my taper roller kit with added confidence.
I have also realised that the correct bottom spacer will mean the steering lock will align properly with the hole in the column.
BiL has reoved the bottom bearing it is 30mm as has been posted. Just need to finalise the spacing and see if the one supplied is about right. Thanks folks. If it helps I will post the link here for the supplier.
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