Rotor upgrade options?

Have you considered adding a rotor to the left side?
Instead of Bigger, Lighter 5mm twin rotors are an option as well.
There are matching calipers avaliable to find from other Yamaha models such as the bigger XS's or SR500..
20210422_235844.jpg
 
Have you considered adding a rotor to the left side?
Instead of Bigger, Lighter 5mm twin rotors are an option as well.
There are matching calipers avaliable to find from other Yamaha models such as the bigger XS's or SR500..
View attachment 195772

Oh yes of course. I am doing a street tracker with a ZX1100 front end and the caliper mounts are for 320mm rotors. I can make what ever I need to put the caliper where ever I want, but I would like to mount the largest rotors possible using the stock cast wheel. I like big brakes and I cannot lie,
 
Motolanna sells a Brembo adapter for the XS650. They have a list on their site of suitable rotors from other bikes. 650 Central is a good source for new aftermarket rotors backed by support.
A second stock brake assembly on the front fork is another 10 lbs of unsprung weight. For me, that's not a suitable option.
 
Motolanna sells a Brembo adapter for the XS650. They have a list on their site of suitable rotors from other bikes. 650 Central is a good source for new aftermarket rotors backed by support.
A second stock brake assembly on the front fork is another 10 lbs of unsprung weight. For me, that's not a suitable option.

Exactly what I was after, thankx,
 
(eye candy jetmechmarty, I'm hopless about the symmetry)
Oh! I can certainly understand that! If you had a ride with me on these bumpy (nicest wat to say it) Mississippi roads, you would understand why dual stock brakes are not an option. That's part of the reason my XS1100 has been sitting under a cover since the 650 returned to service.
 
Motolanna sells a Brembo adapter for the XS650. They have a list on their site of suitable rotors from other bikes. 650 Central is a good source for new aftermarket rotors backed by support.
A second stock brake assembly on the front fork is another 10 lbs of unsprung weight. For me, that's not a suitable option.


Here is the Motolanna set up (bracket and disc spacer):
4614E3D1-9859-468A-A345-4F72A2573BCA.jpeg
95BEE8A3-FD78-44A3-B0F3-328CE8131164.jpeg


40mm Brembo Caliper, Arashi SRX 400 aftermarket floating disc., and custom stainless brake line.

Had to file the back of the caliper to clear the spokes. But other than that, it is bolt on, bleed and go (umm, I mean stop).
 
So, that's 2 lbs? Instead of 7 lbs.

Haha. Not sure. I never weighed everything before the swap. Has to be a significant reduction in unsprung weight though.

The stock front setup had a vague wooden feel. It was also either off or on and not much in between.

I now have two finger stopping and significantly improved modulation/ feel.
 
So, that's 2 lbs? Instead of 7 lbs.
My guess would be around 3 lbs. I have been checking out various 320 mm rotors with Ducati/ Yamaha 6x80 mm PCD. Very few, if any, cast iron or stainless steel rotors are lighter than around 1300 g. BrakeTech carbon rotors are the only alternative for super light rotors.

My custom made 320 mm ISR disc does not require any spacer, as I ordered it with 23 mm offset. This disc is 5 mm thick, and weighs around 1400 g.

For comparison, the most common second hand Ducati/ Brembo disc with round holes in the carrier weighs over 1800 g.
 
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