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Old 05-28-2012, 08:30 PM   #13
DiabloADV OP
Joined: Oct 2010
Location: Nor Cal, USA
Oddometer: 2,336
Getting farther along in the teardown (got sidetracked solving a bad cylinder problem).'s the head tube setup.

The steer tube is ~25.8mm (+/- 0.2mm) at the upper and lower bearing. Isn't the stock airhead bearing 28mm ID...? My micrometer isn't perfect, but it's not that far off.

Any thoughts on what's been done here?

EDIT: I found the specs for an XR600 bearing -- 26mm, top and bottom. So, that's what I have here. Rather than an airhead steer tube pressed into the triple, I have a stock XR600 triple, with the head tube on my frame having been modified to fit. Good to know, should I ever need to replace the triples or the bearings...

1974 R90/6 motor w/1050 kit; twin plugged; installed in...1970 R60/5 frame; RM125 front end; KZ1000 Police Tank.

DiabloADV screwed with this post 05-29-2012 at 07:02 AM
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