I’m surprised that it’s able to mount the 5,5” rim with a 180/55 tire. I’m using the 5.0” from the PC31 with a 160/60. And it’s pretty narrow. But the pictures shows it works. Maybe you have to ajust the chain guard.
Hi infiniytumb, im pretty sure the chain gaurd will need adapting, the 180 tyre only works with the narrower 520 chain set up..
Hi vf_pete, what’s your plan with the rear brake? I’ve use the CBR600/900 caliper with an adapted CBR600/900 mounting bracket. But the contruction of the VF1000R rear brake is on a higher level and since a year I’m thinking how I can adapt the orignal construction with the link directly to the frame.
I’ve gone with the cbr600f4i rear caliper bracket, I shaped a aluminum lug to fit into the slot on the swingarm, it took a bit of fiddling to get i right, once that was done I tig welded it into the slot, my first attempt of tig welding, strong but not pretty 
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p.s. The first 2 photos of the lug and freshly welded swingarm is from when I did this conversion on my other R for a f3 rear wheel about 7 years ago, the lug for the blade wheel dosent protrude as far.. I was sceptical about welding the swing arm at first as quite a few people were saying it couldn’t be done as its a aluminum alloy..
I choosed the alternative way and adapted the bracket. A german mechanic has shared the costruction details and most of the german 17” wheel replacements are done this way. Alternative method, same effect. But now I want to try if is possible to use the original construction. Details will follow if I’ succesfull.
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That looks a neat solution 
I have the same solution, but my bolt seems to be a little bit thicker. The advice was to glue some thin steel sheet into the swingarm (on top over the bolt) to prevent the bolt make some deformation to the swing arm.
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