TeddyG
Hero member
- Location
- Portland Oregon
Lighter rotors for 750?
- Thread starter TeddyG
- Start date
Brembo flange is light alloy.
Paul
Drill them. Add the scallops of the later versions and you're about as far as you'll get. As Paul has stated, the adapter is light alloy. To get any lighter, the entire brake system needs replacing, not really worth the trouble. Upgrading the front brake quickly reveals other shortcomings in regard to forks and suspension, it's a can o' worms.
FWIW, stainless steel is just as heavy/light as cast iron, given the dimensions are identical. At this scale, the minute difference in density is negligble.
Want a quick steering bike? Buy a modern one...
piet
Andy
Hero member
- Location
- Auckland, roughly
Stainless won’t help with weight but allows you to use sintered pads with confidence for better performance, especially in the wet 
TeddyG
Hero member
- Location
- Portland Oregon
Thanks guys and good to know about the Brembo carrier I would prefer to keep. I'll see how I like this bike as is. The stainless rotors supposedly weigh 1.3 kg, so not sure if they're much lighter.
breganzane
Hero member
- Location
- NSW Australia
As others have pointed out, stainless isn't any lighter than iron, only the geometry of later disks removed some material. You can get metalgear replacement stainless rotors to fit to your existing inners (which are already very light) and the matching pads here:
I doubt it's a terribly noticeable difference to be honest, but the combo works well wet and dry.
The best brake upgrade is to put a more modern master cylinder on, the improved mechanical design of later MC's dramatically improves feel and performance. Cheap option is a simple Brembo 'coffin' style MC like this:
The best brake upgrade is to put a more modern master cylinder on, the improved mechanical design of later MC's dramatically improves feel and performance. Cheap option is a simple Brembo 'coffin' style MC like this:
Bevel Heaven Vintage & Classic Ducati Restoration & Spare Parts (925)798-2385
10.4620.67
store.bevelheaven.com
Dellortoman
Hero member
- Location
- Tasmania, Australia
Nice. That must be a relatively new addition to Metalgear's product range. I looked for replacement disks for my Jota a few years ago and they didn't offer that option back then. I see that they also do drilled versions of the 280mm rotors for the later triples. Those brakes were common on several Italian bikes of the period.
breganzane
Hero member
- Location
- NSW Australia
I actually wasn't aware the ones I linked were undrilled, that must be a new addition to their range. If changing only to save some weight, might as well get the drilled ones:
www.metalgear.com.au
LAVERDA 1981 1000 Jota Brake Discs and Pads
MetalGear is an Australian manufacturer of premium braking components since 2003.
www.metalgear.com.au
those drilled Metalgear rotors have been available for quite some time, been buying them for maybe 10 years now at least
Just need to look for the later year models as he has undrilled and drilled
good kit, install them on every Laverda I restore and Bernie who owns the company is a decent guy to deal with
when we built Mike's Motodd we machined our own brake rotor carriers as we used Ducati Multistrada Showa forks and 18" GSXR rims but of course no brake rotors would match up
Using Ducati 320mm rotors as the model, machined up the carriers with the needed offset and 5 hole PCD and then drove over to Metalgear and asked if they could rivet the new rotors on
Bernie told me we were the first people to come in with custom made carriers to have rotors installed, he was that impressed he gave Max and I a guided tour of his set up
Just need to look for the later year models as he has undrilled and drilled
good kit, install them on every Laverda I restore and Bernie who owns the company is a decent guy to deal with
when we built Mike's Motodd we machined our own brake rotor carriers as we used Ducati Multistrada Showa forks and 18" GSXR rims but of course no brake rotors would match up
Using Ducati 320mm rotors as the model, machined up the carriers with the needed offset and 5 hole PCD and then drove over to Metalgear and asked if they could rivet the new rotors on
Bernie told me we were the first people to come in with custom made carriers to have rotors installed, he was that impressed he gave Max and I a guided tour of his set up
TeddyG
Hero member
- Location
- Portland Oregon
piranha-bro2
Hero member
- Location
- Melbourne
Most modern sportsbike wheels will have the external part of the rotor bolted directly to the wheel (no carrier) - saves a bit of weight.
GregT
Hero member
- Location
- Christchurch NZ
I've also made up carriers for discs. Which as it happens were also Metalgear. But not living close to him I used capscrews and cone nuts.
Cone nuts are effectively high temp Nylocs. The insert is sheet metal rather than nylon. So single use.
Cone nuts are effectively high temp Nylocs. The insert is sheet metal rather than nylon. So single use.