got some bike parts for the bmw all going back here on the rear wheel. this is a lightweight
rear brake rotor saves about 10 ounces by installing that. you can see it's much more open
than the current design and then i got several sizes of rear sprockets
from alpha racing in germany and these are so i can put them on the sprocket carriers
and easily change those while i'm at an event like texas mile.
you always want the teeth and number on the outside of course. the sprocket fasteners on
time for the wrench.
yeah i could fight getting off those rounded nuts for the next hour or two
but i've got a grinder so why make life difficult?
grinder took about five minutes. would have taken probably an hour with wrenches. there's the old
rotor there's the new lightweight one my vice isn't exactly suitable for what i'm wanting to
do with this but realistically you've got a bolt spinning through there with a nut on the other
side you just need to brace both sides and instead of trying to grip something in a vice that's not
going to hold it i'm just going to stick that wrench in each of those bolts. i'll let the
teeth hit the wood so it's soft and doesn't hurt it and then i'll use my torque wrench
to go ahead and tighten down to what's needed. you can lay that wrench up against that piece
of wood so it's angled down into the table and then that crevice that'll hold that still
and then obviously i'll just put my weight into this and squeeze the two together
two rotate two
there's the assembly. again got your tooth count facing outward
and those are where the cush mount goes in the new sprocket it up in here there that's in.
there we're just sliding that ramp back everything kind of slipped into place
i want to grease that axle.
i forgot that thing so i got to take it back apart and put that on not a big deal just frustrating
this is between the brake pads spacer there spacer there spacer here chain sprocket.
there we go we go i just got to put the axle nut back on.
check changing all that after to get it on
far forward as you can
and to keep a cheat sheet of the torque specs.
there you go. we got everything put back together and checked out real careful like
and clear. okay good now i have my new sprocket on i've got two sprockets one up in tooth and one
down in two so i've got some adjustment options and i have my lightweight rotor on saving 10
ounces.