Thanks for your reply, Scotty. Does DSC use 70 or 72 mm RB barrels? Are any of you racing mono port RB 252 barrels? Just trying to get a picture of what's being used in racing these days. I took a brief ride on a mate's RB 225 a couple of weeks ago, and though it had a bit more grunt at low rpms, I think my TS1 is at least as quick once the revs are up. Everyone here assures me that the RB 250s are much, much faster.
The only racing out here is on the salt flats, and I want to see how fast I can go on a full frame Lambretta. I'm going to try a run with my TS1, once the lakes dry out and after I've built my GP200 so I have something to ride if something goes wrong. With my current gearing and exhaust I wouldn't expect more than 85 mph, maybe a little more. So far, 102 mph has been done here, and that looks to be smashed very soon, albeit on a slipstreamer custom frame. That's why I'm looking for a major upgrade in power.