thehiredgun

New Member
Fantastic Project!!! A real SuperMono!

I'm curious about the wheel & tire change. It looks like once you put the fork-lowers on, the front 690 wheel and tire just drop right in. What did you have to do to get the 690 rear wheel + sprocket + disc to replace the stock 390 components?
 

Superpacman13

Supporting Vendor
Fantastic Project!!! A real SuperMono!

I'm curious about the wheel & tire change. It looks like once you put the fork-lowers on, the front 690 wheel and tire just drop right in. What did you have to do to get the 690 rear wheel + sprocket + disc to replace the stock 390 components?
We had to machine the brake disc mounting surface down because the width of the 390 triples isn't wide enough to fit both calipers in alignment with the wheels. WE also had to grind the spokes of the wheel down to fit without hitting the backs of the calipers.
 
I didn't get much time on the RC732R last year due to breaking my arm four days ahead of the opening round. We decided to do a few more upgrades on the bike over the winter though. Added 790 lowers to the 390 forks and dual rotors as well as dropped in a Suter slipper clutch to help get the power down. Here are a few recent pics just waiting for the racing to pick back up.
how difficult was the installation of the 690 engine case and fitment to the rc390 chassis?
 
Thanks for the reply.. I bought a 2015 690 motor and am gathering the parts. Would like to get your advice/ expertise on the mods if you have time for a call to discuss.
 
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