Flo Wheels + rims Flo30 Flo60 Flo90

I'm not sure about that, I got $45 shipping for one set of rims, and $55 shipping for two, so it should work out cheaper to group order

Yeah. Im in the US right now so would offer but Im already bringing back enough rims for other people. Sorries.

ah sod it, I just bought them...

Black spokes woo!

Edit. So rims to uk is €45.

what width tyres for flo30s? am I supposed to match the width of the rim?

what width tyres for flo30s?

Whatever you like from 20mm* to about 30mm will work, 23 or 25 will probably be optimal aerodynamically. If you're used to 700×25C on a 20mm wide rim, 700×23C tyres should give similar ride and handling on the Flo30 (or other wide rims).

*Don't actually put 20mm tyres on anything apart from the front of a TT or track bike where you're sure that the aerodynamic matching to the rim gives a benefit which makes up for all the detriments.

...and 20c to give you that <95cm wheelbase, fascilitating a rear wheel slam all the way into the dropout without touching the ST.

In the olden days, we got down to about 92cm with 18mm tubs which you had to let down to get out of the road dropouts, but we were wrong about so many things back then.

92 holy macaroni!

This kind of thing, not mine but the only USWB TT bike I could find quickly, 36" = 91.4cm. You can get the rear centres down to about 14" on a steel frame with 18mm tubs if you bend/shift/dent the seat tube, which means you can have a 36" wheelbase without too much toe overlap at the front

Why?

Thank you very much - lovely seat tube bb offset.

Why?

Why did we keep shortening the wheelbase in the late 70s? Same reason we do weird shit to our TT bikes now, we thought it would make us faster.

I have a feeling (based on not much, but a hunch about wake vortex cleaning) that TT bike wheelbase is still influenced too much by tradition and not enough by science. I'd like to try moving the effective chainstay length to a more old fashioned 17"(compared with the 15-15.5" which is the current orthodoxy), I think more stability, more comfort and better aeros might all be up for grabs.

Jenzies chainstay wheelposition on the hour was grotesque long

23mm service course was found to be the best for teh aeros.

Thanks everyone

Know a friendly frame builder with a wind tunnel? :)

Know a friendly frame builder with a wind tunnel? :)

Specialized? Not sure whether the Win Tunnel boys have the resources to stretch a Shiv and test it. If I win £87M on the lotto on Tuesday, I'll do it myself.

Dibs tunnel time.

Would be interesting to see what sort of price the Win Tunnel would have to be charged out at to be a stand-alone going concern. The proposition is that it's cheaper than other facilities, both capital and revenue, because it only goes up to about 60mph (~27m/s), whereas typical 'low speed' wind tunnels designed for automotive and architecture users go to anywhere from 50-100m/s. As we all know by now, twice the speed means 8 times the power, so the installed air moving plant at a 100m/s wind tunnel even of the same area as the Win Tunnel must be huge.

Have you seen Coggan(?)'s homemade mini wind tunnel? He used it to measure various brakes. Think it's on the the TriRig site. Upscale that slightly... how many Dysons would you need in reverse I wonder?

He's also tested a variety of shoes and overshoes, but the data is only for the people who helped to fund the research.

I wonder if he'd sell that data? It's not much use to me as my shoe selection is quite limited.

Have you seen Coggan(?)'s homemade mini wind tunnel?

Yes, as somebody who bought one of the first batch of TriRig Omegas, I followed that story quite closely.