Posted by seabreeze on October 25, 2007, 10:18 am
Rob Kleinschmidt wrote:
>Uhh.. maybe if you excluded the Brit V twins.
>http://en.wikipedia.org/wiki/Brough_Superior#Model_history
Approximately 3048 of 19 models were made in 21 years of production. How many
made it
across the pond?
How many Vincent Black Shadows and Rapides? I dunno, and it doesn't matter to
me.
When I generalize about motorcycles, I think of the typical mass-produced
motorcycle
readily available to American riders. Things like Harley knuckleheads and
panheads and
shovelhead that were around 74 cubic inches and Triumphs and BSA's were about
40
cubic inches.
The Brit bikes were more nimble, but the Harley riders rode probably longer
distances.
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Posted by IdaSpode on October 25, 2007, 12:29 pm
Took the bike (XV535 virago) in for steering head bearings replacement
for MOT. When collected and driven away the bars don't appear to be in
a straight line when driving straight ahead - the right side slightly
back and the left slightly forward. I can't really see how this can be
from looking at the way the risers and clamps at the top of the forks
are assembled, although it seems that to replace the bearings the
handlebars are probably removed along with the forks. Taking it back
tomorrow and hoping they can sort it. Any thoughts about what might
need doing appreciated.
Posted by OH- on October 25, 2007, 5:13 pm
> wrote:
>>Took the bike (XV535 virago) in for steering head bearings replacement
>>for MOT. When collected and driven away the bars don't appear to be in
>>a straight line when driving straight ahead - the right side slightly
>>back and the left slightly forward. I can't really see how this can be
>>from looking at the way the risers and clamps at the top of the forks
>>are assembled, although it seems that to replace the bearings the
>>handlebars are probably removed along with the forks. Taking it back
>>tomorrow and hoping they can sort it. Any thoughts about what might
>>need doing appreciated.
> Loosen your top and bottom triple clamp bolts, (the ones holding the
> fork tubes) along with the axle nut and pinch bolts (or whatever you
> have holding the axle).
> Stand in front of the bike with the wheel between your legs, line up
> the wheel straight ahead, twist the handlebars until it's all aligned
> correctly. Tighten bolts, recheck alignment.
Correct but I wouldn't do it. Not if a bloody garage fucked up
the bike like that.
Let them fix it. Then (if practically possible) never go to them
again. Correct fork alignment is sort of critical on a motorcycle.
--
Ole Holmblad - Göteborgs Prima MCK / MK Pionjär
TDM850 / WR450F FL#44 OTC#489 UKRMSBC#08
SGFPTH#00 Remove hat to answer by mail
Posted by The Older Gentleman on October 26, 2007, 5:12 pm
> I get the impression that an inordinate number of (street) bikes need
> their head bearings/races replaced when I'd think that it would be wheel
> and other drive-train bearings that would wear out sooner (this may be
> not so true of off-road bikes). From a couple of incidents I've seen,
> my guess is that some people including pro' mechanics make the races way
> too tight, eg., they torque a race nut as well as the top nut. Just my
> theory.
Um, your theory would be wrong.
--
BMW K1100LT 750SS CB400F CD250 CB125 SL125
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....
Posted by The Older Gentleman on October 26, 2007, 5:12 pm
> The wheel bearings are usually balls, though I have seen a few bikes with
> roller bearings in the wheels. Each time the front wheel hits a bump, a
> different ball or inner race takes the hit.
>
> Steering head bearings are just rotating back and forth and the balls will
> dig into the lower races.
>
> Also, the steering head bearings are getting hit with forces that are
> multiplied by the action of a lever arm that's about 1 foot long.
This is all absolutely right. Steering heads don't rotate constantly -
they just turn a few degrees one way and the other and they are always
being walloped by road shocks.
--
BMW K1100LT 750SS CB400F CD250 CB125 SL125
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....
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