rotor thickness spec

[timebombprod]

what is my 82 gs650s rotor thickness spec? getting a digital caliper tomorrow and gonna check those aswell.

also for future ideas, can the discs or calipers be upgraded to something even better and not hard to install

and then what is my banjo sizes i probably asked this 3 separate times now i have oem stuff on there

[steveb922]

Banjo is M10 fine (1.0).

Rotor spec will be in the manual.

http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS650GManual.pdf

[Datsa Noydb]

what is my 82 gs650s rotor thickness spec?

I don't think the specs for a 650S are any different than they are for any other 650, except that they never made a 650S. If you are asking about your 650L, as steveb922 said, it's in the manual. If you don't happen to have a manual, just look between the mounting holes on the disc itself.

getting a digital caliper tomorrow and gonna check those aswell.

Calipers will only work to check thickness if the discs are perfectly smooth and flat. If there are any grooves, the calipers will bridge across them and only measure the high points.

also for future ideas, can the discs or calipers be upgraded to something even better and not hard to install

If your discs are worn and full of grooves and gouges, almost anything will be an upgrade. "Not hard to install"? They are all the same. You have to remove the front wheel from the bike, unbolt the current discs, install the new discs, put the wheel back on the bike. It will be considerably harder if you get discs with the wrong offset. You will either have to get the correct discs or go through a lot of effort to adjust the caliper mounts.

and then what is my banjo sizes i probably asked this 3 separate times now i have oem stuff on there

This means that you probably haven't looked in any of those three separate times, but steveb922 answered it a fourth time for you.

[Cipher]

Don't the rotors have the spec stamped on them?
I doubt your rotors are worn out. My sad lonely single has 90k on it and is groovy and groovy.

[timebombprod]

I don't think the specs for a 650S are any different than they are for any other 650, except that they never made a 650S. If you are asking about your 650L, as steveb922 said, it's in the manual. If you don't happen to have a manual, just look between the mounting holes on the disc itself.
.

i meant 650s as in plural lol just the size but thanks for all the answers

[timebombprod]

just checked them with the caliper, front is supposed to be 5.0 =+- .2 and rear is supposed to be 6.7 =+- .2
my front is 5.4-.5 all around or .22 of an inch and my rear is mainly 6.5 all around, so yes there is grooves but not much id say unless a "small" amount is actually alot. but my front is thicker than spec and rear is thinner? it says my rear is okay because the limit is 6.0.
think the front rotor has been replaced?

[GregT]

just checked them with the caliper, front is supposed to be 5.0 =+- .2 and rear is supposed to be 6.7 =+- .2
my front is 5.4-.5 all around or .22 of an inch and my rear is mainly 6.5 all around, so yes there is grooves but not much id say unless a "small" amount is actually alot. but my front is thicker than spec and rear is thinner? it says my rear is okay because the limit is 6.0.
think the front rotor has been replaced?

If the rotors are rivetted to the carriers, probably not replacements. I have detatched rivetted rotors - which started out thicker than 5.0mm - and thinned them to 5.0 for race use. To re-attatch, I use high tensile capscrews with cone-lock nuts. These are a high temp self-locking nut with a sheet metal insert rather than the usual nylon. If they aren't already drilled, I usually do that while they're off the carrier - and before thinning.

[steveb922]

You'd expect the front to wear quicker than the rear

[salty_monk]

You can upgrade the brakes on an L but the bracket is a different shape for the leading axle forks vs the axle under... I've never had an L in my garage to develop one.