SOHC.co.uk Forums > CB350/400
Does anyone know the diameter of the CB400F2 steering shaft at the base?
McCabe-Thiele (Ted):
This is the e-bay online shop second link was how I found them - they had sold out of the cheaper bearings so mine were £30 including postage really helpful - they confirmed the actual bearing sizes too.
I asked if they would fit my model Honda that's when he came back to me with the right ones. They are also bike breakers selling used parts as well as some new stuff.
https://www.ebay.co.uk/str/offshorebikebits?_pgn=4
https://www.ebay.co.uk/itm/Steering-bearings-taper-roller-Honda-CB250-350-400-450-500-550-650-750-super/153984339007?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
AndyD:
Ted,
I had problems on the CB400 and also the CJ250T with two different brands of tapered bearings.
The issue seems to be that the upper bearing is simply thicker than the original so reduces available thread on the stem.
Bottom bearing with spacer worked out correctly but top bearing on both caused the problem.
Will be keen to see if the ones you have will work better as it seems crazy that the bearings aren't simply interchangeable without issue.
No other bikes I've worked on have had an issue so guess it's just on some models that things don't fit nicely.
Cheers,
Andy
McCabe-Thiele (Ted):
--- Quote from: AndyD on February 17, 2021, 04:27:33 PM ---Ted,
I had problems on the CB400 and also the CJ250T with two different brands of tapered bearings.
The issue seems to be that the upper bearing is simply thicker than the original so reduces available thread on the stem.
Bottom bearing with spacer worked out correctly but top bearing on both caused the problem.
Will be keen to see if the ones you have will work better as it seems crazy that the bearings aren't simply interchangeable without issue.
No other bikes I've worked on have had an issue so guess it's just on some models that things don't fit nicely.
Cheers,
Andy
--- End quote ---
I'll keep this post updated when the bearing arrive & I have fitted them it will be a few weeks away before I fit them as am doing the frame painting soon /next methinks.
McCabe-Thiele (Ted):
--- Quote from: AndyD on February 17, 2021, 04:27:33 PM ---Ted,
I had problems on the CB400 and also the CJ250T with two different brands of tapered bearings.
The issue seems to be that the upper bearing is simply thicker than the original so reduces available thread on the stem.
Bottom bearing with spacer worked out correctly but top bearing on both caused the problem.
Will be keen to see if the ones you have will work better as it seems crazy that the bearings aren't simply interchangeable without issue.
No other bikes I've worked on have had an issue so guess it's just on some models that things don't fit nicely.
Cheers,
Andy
--- End quote ---
Did your bottom spacer replace the existing one under the bottom bearing to allow for the difference in bearing height?
McCabe-Thiele (Ted):
My taper bearing kit arrived today its a German Packaged brand by JMT shown as suitable for Honda CBb 250/350/400/500/550650/75 SSH750 clearly far too universal.
The bearing diameters are the correct OD & ID 48.6 mm x 26mm for the top bearing: 50 mm x 30 mm for the bottom with a 4 mm spacer.
The Bottom Bearing measures 15.14mm deep: the top bearing 15.70mm deep approx.
What I can't get my head round is that the bottom ball bearing race is approx 13.5 deep. So if the bottom bearing is 15.14 mm deep why does it need a 4 mm spacer as that would raise everything too high as has been mention by others ?
My worst case scenario is I fit the taper roller on the bottom that takes a pounding and put a ball bearing on the top if they do not fit as a pair. A sort of neither fish nor fleash option.
Anyones input / observations welcome.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version