Wow Andy, Thank you kindly for the avalanche of most welcome info! The best news is that our cylinder assy is only 223mm wide, so it will fit between the MC21 & MC28 frame spars with about a hand width either side! I was surprised there's so much room in there for what is a frame for a v-twin mill.

And given the YPVS lump has already been inserted into the NSR chassis, it won't be revolutionary engineering to do it again. Actually the YPVS motor is wider across the pots than the TSS, because of the jutting-out of the PV boss on the left cylinder.


Looks like a bit of rear shock linkage surgery might be required to the NSR in order to fit in the 123mm diameter belly of our 500 pipes.


Oh and I take the point that the jelly-mould RS bodywork is definitely 'approval subject to taste' - but the RS frame and swinger are pure muscular sculpture at its finest. It's a sin to cover it up with fairings I reckon, and at least one RS500 - mine - will be built as a naked bike. I want to cope an eyeful of the swoopy lines of the frame, and to see the bonkers engine. Inboard oil tank and rad reservoir ... lovely.

Agreed - the RGV motor is a proper rotter. Can't throw them out of the RS frames quickly enough. Our customers are certainly glad to see the back of them!


Oh just one thing, in case it's of interest to chaps on the forum, we have a friend over in Japan that orders parts direct from HRC for us (he's been away the last week, hence our original post on here) - mostly we buy new HRC RS250R forks - typically the 2002-on 43mm forks rather than the earlier 41mm forks. We do have a spare pair of new 43mm stanchions with fork bottoms/full damping mechanism, and fitted with bushes, seals etc if anyone's interested.

Many thanks,
Steve
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