--- In
DSN_KLR650@yahoogroups.com, "E.L. Green" wrote:
>
> --- In
DSN_KLR650@yahoogroups.com, "James Morrow Sr"
> wrote:
> >
> > This may work, but I would never trust it. A balancer needs
minimal
> > friction. If you don't have grease in your wheel bearings, they
> won't work
> > very long at speed.
>
> Well, all I can tell you is that I can balance my tires to within
1/4
> oz using the stock bearings. That is, if I add a 1/4 oz weight to
some
> random point on one of my (balanced) wheels using the method I
> described, the wheel will slowly rotate until that 1/4 oz weight
is at
> the bottom of the wheel. My stock bearings have been operating just
> fine at speed for 32,000 miles now. I check my bearings every time
I
> change tires to make sure they don't have too much play and that
there
> are no rough spots. It may be that the dry climate I live in (well,
> during half the year!), and the fact that my bearings have never
spent
> any time underwater, has something to do with their long life.
>
> > friction for accurate wheel balancing IMO. A dedicated wheel
> balancer with
> > minimally lubricated bearings is what the racers use.
>
> Yes, they also balance to within 1/16 oz. Given that my KLR will
never
> see 90mph (much less the 150mph that the racers reach!), I'm going
to
> spend my money on something else. Personally I think within 1/4 oz
is
> fine for a KLR.
>
> > Technically you only need to balance the wheel once and then
permanently
> > mark the heavy spot.
>
> Err, no. Tires have a heavy spot too, due to the mold design and
how
> rubber is injected into the mold. Typically there will be a yellow
> mark opposite the heavy spot which, if you match it up with your
> tube's air valve, will result in a tire-wheel combo that is much
> better matched than if you don't use the yellow mark. Also note
that
> since we have tube-type tires, our tubes change the balance also,
> especially if you are using an 18" tube in your rear tire. That
tube
> will have heavy spots where the rubber isn't stretched as far as in
> other spots. I've found that if I pop one side of my tire off, pull
> out the tube, and put the exact same tube back in and re-inflate,
my
> balance changes. (Yes, I did that, when testing how much work it'd
be
> to put a new tube in while in the field).
>
>
> > I enjoy changing wheels and balancing, so I start from
> > zero every time, wheel then wheel and tire (tire light spot at
wheel
> heavy
> > spot).
>
> That sounds like it would work better with tubeless tires than with
> tube-type tires. I find that lining up the light spot on the tire
with
> the heavy spot on the tube (the valve) tends to work best, I rarely
> have to put any weight at all on the front tire when I do this
because
40yahoogroups.com>,
> > > "rschulte46" wrote:
> > > >
> > > > Everyone talks a lot about tires and how they have changed
them
> > > > themselves under a myriad of circumstances. I don't think I
have
> seen
> > > > anyone talk about balancing the wheel. Why?
> > > >
> > >
> > > You haven't been looking hard. For example:
> > >
> > >
http://autos.groups.yahoo.com/group/DSN_KLR650/message/156227
> > >
> > > has a whole big discussion of wheel balancing.
> > >
> > > How to do it: Assuming the bike is hoisted off the ground on a
lift,
> > > take the front brake caliper off and hang it from the handbars
with a
> > > bungee to keep from stressing the brake fittings. Take the
speedo
> > > cable off, and take the wheel off and remove the speedo drive.
Put
> > > wheel back on its axle and spin it. Note where it comes to
rest.
> > > Repeat. If it comes to rest on the same spot a second time,
add a
> > > 1/4oz weight on the other side (temporarily duct tape it for
now).
> > > Spin again. If the side with the 1/4oz weight ends up on the
bottom,
> > > take weight off, you're done

. Usually you'll find that, if
you
> > > aligned the dot that denotes the "light spot" on the tire with
the
> > > valve stem, you'll need at most 1/4 oz of weight to balance
it. I find
> > > that even if I clean the rim well with brake cleaner, stick-on
weights
> > > will eventually fly off with a sound like a gunshot unless I
top'em
> > > with duct tape. So you might want to try the spoke-type
weights if
> > > you're doing the front. I think you might need some better
bearings to
> > > get to within 1/8oz, but the stock bearings work fine for
getting to
> > > within 1/4oz.
> > >
> > > On the back, the process is similar, but you remove the
sprocket
> > > assembly as well as the rear brake caliper. The rear typically
will
> > > take much more weight to balance because the tire has a bigger
> > > cross-section and thus small changes in rubber density make a
big
> > > difference in weight. The practice of putting 18" tubes is
especially
> > > interesting, because it'll stretch differently every time,
requiring a
> > > different weight distribution even if you're putting the same
tire and
> > > tube back on.
> > >
> > > The most difficult balancing job I had was when I was prying
the tire
> > > onto the rim, and one of my tire irons flew out and flew
somewhere. I
> > > looked around and didn't see it, so I grabbed another iron and
> > > finished putting the tire on. Then I tried to balance it.
There was
> > > one side that was really, really heavy. Too heavy. Hmm. Did I
somehow
> > > manage to put the dot on the wrong side? So I popped one side
of the
> > > tire back off and started spinning it on the rim... and hear
something
> > > rattle.
> > >
> > > Yep, there was my missing tire iron!
> > >
> > > Lesson: It's really hard to balance a tire if you put a tire
iron
> > > inside the tire

.
> > >
> > > -E
> > >
> > >
> > >
> >
> >
> >
> > --
> > James Morrow Sr
> > Union, MO
> > '00' RT + dual plug + Bunkhouse
> > '00' BUSA + 15hp
> > '05' KLR650 + big fun factor
> >
> >
> > [Non-text portions of this message have been removed]
> >
>