R90SS Better brakes and ride?

[Duane Ausherman]

You are the first person who accused the R90S of being nimble.

He said "nibble". That must be a technical term describing that sideways chatter in tight turns.

I am an idiot. I don't know how I read nimble when it clearly said nibble. The R90S with the LWB and super heavy front end is anything but nimble.

[moonbeamerll]

You are the first person who accused the R90S of being nimble.

He said "nibble". That must be a technical term describing that sideways chatter in tight turns.

I am an idiot. I don't know how I read nimble when it clearly said nibble. The R90S with the LWB and super heavy front end is anything but nimble.

It is to be overlooked. You are on medication.

[bbelk]

Of all the mods ........... testicles.

I might get a set of the big ones I see hanging under the back of jacked up Texas trucks. I could drag them on the ground and use them to improve the brakeing on my 75 R90/6. It would have to help.

[Duane Ausherman]

You can easily double the braking of the single disc of the /6 by dragging your feet while you brake.

[Deleted User 62]

You can easily double the braking of the single disc of the /6 by dragging your feet while you brake.

Be nice Duane, you're scaring the noobies!!!

[vanzen]

You can easily double the braking of the single disc of the /6 by dragging your feet while you brake.

Good response !

Other options may save that shoe leather.
A number of ways to improve the effectiveness of the old brakes do exist.
Paramount will be to recalculate the MC ratio ...

However, the question posed will go beyond "upgrading the stock components".

Confronted with this very question,
my solution was to use the rotors and hub from a R1100R
The 4-pot calipers from a K1
a spoked wheel rim from a R100R
and the stanchions from a K75S ...

No, none of it simply "bolted together",
and just my personal answer to a similar problem.

[alex117]

When I first got my 1975 r90s it did not ride that well even with 14,000 mi on it. Each change I made was an improvement. I tried several different springs but went back to ¾ spacer with bmw springs to give me the correct sag for my 165 pounds, Added a Toaster Dan brace, that helped, added San Jose brace, a bit better added low cross brace better yet, added bolt on cross brace better, took off Lester’s went to wires better, added frame kit on rear sub frame that helped. Now it goes thru the turns and it is fun. Yes nimble!

Now I want a better ride if I can. Took a 1974 R90S frame, extensively braced welded head stock in two places like they do with the gs racing bikes. Welded cross brace. And more.

Took a R100R front end, custom set for my weight with Gold vales. Found a way to change bearings in Kuma Racing Magnesium wheels to fit 25 mm R100R axel. In rear Kuma with disc brake set up .

Just need to figure out from brakes. The easy way just make 285 mm Rotors made on the stock R90S hubs.

The better more expensive way use a single 320 mm rotor with gs type conversion, and one 4 piston stock r100R Brembo. This would keep the weight down and may be ok with braking. The r100gs I have has a dual brembo with single rotor stock so this 320 mm with the R100R 4 piston combo should be better.

[Duane Ausherman]

alex117, I suggest that you ride a SWB to get an idea of what "nimble" means. All of the /6 are the LWB and they are not nimble in any sense. That 2 inches of wheelbase makes a huge difference. My daily rider is a LWB and I accept it, but I certainly know that it isn't nimble.

[alex117]

Ok nimble is not an ok word how about more fun than my 1978 rs, my 1977 rs , my 1995 (yes '95") r80 and the R100gspd, just goes where I aim it and now for the first time I am wearing the sides of the tires from leaning around turns comfortably. So it is fast going along switch backs and requires very little effort to do so.

Hard to think it could be better but with new build I will try.

[mattcfish]

Ok nimble is not an ok word how about more fun than my 1978 rs, my 1977 rs , my 1995 (yes '95") r80 and the R100gspd, just goes where I aim it and now for the first time I am wearing the sides of the tires from leaning around turns comfortably. So it is fast going along switch backs and requires very little effort to do so.

Hard to think it could be better but with new build I will try.

I like your thinking. These bikes can be a lot of fun, they're not German Goldwings...... although many seem to think they are. Modifying the DIY way is very rewarding. Personalization with a goal in mind is the right idea. Keep us posted on the progress of your project.