Apparently they will,but it requires futzing.

http://bikeforums.net/attachment.php...hmentid=429967

serious doubts about the veracity of that article...

http://www.atob.org.uk/wp-content/up...ch-295x326.png

I had a Scorcher on mine's back as well. It was a very tight fit, I had to bend the mudguard stays to avoid the tyre rubbing. But it does clear the frame, unlike on older frames where it cannot fit.

The Primos are good tyres though, rolling resistance they are up there with the best of them. Not much good putting up with Scorchers if you already have Primos.

I fit a 58T chainring on mine and that had an immediate impact on speed. I was able to pedal on stretches where cadence made it uncomfortable with the 54T ring, and pedal harder on other stretches and reach higher average speeds. A 60T probably won't fit - the 58T ring already interferes somewhat with the front wheel hook when folding.

But the pic does show that Scorchers fit,which answers the question on the table.

It seems they made that picture using equal tyre pressures for a widely-ranging tyre width, 40mm to 28mm. So the narrow tyre just about completely collapses, no wonder it looked weird. It might have been more real-world applicable to pump them proportionally the same, for same sidewall tension which is what determines tyre pressures. So a pity, at least for that picture they weren't comparing apples with apples.

The picture of the contact patch makes no sense to me. I would have assumed that the area of the patches shown should be the same. The weight of the rider of rider and bike being the same in the three tires and it is equal to the area of the patch times the air pressure. I'm confused.

I suspect the narrow tyre suffered such a severe collapse that the sidewall deformed, also the contact patch, rendering the pure physics equation an approximation. The equation would be valid if the tyre is modelled as a pure elastic medium. Which for a soft narrow tyre it clearly is not.

iin the real world i find kojacks are faster as stevios are so firm i end up not peddling on roygh sections or some surface transitions.

Tight clearance is Between the chainstays and the front of the, tire sidewalls thats not shown...
[I know its just pasting a picture from the linked a to b page.]

(it really doesn't matter to Me , I put on Marathon Plus for the Puncture resistance, not speed )

In Interceptor's second video regarding the bike club ride (post #29 ), at approximately 6' 10" of the video there is a white bike on the right side of the screen with a very strange (at least to me) drivetrain. Can someone tell me what it is? Thank you.

Looks like a small gas motor. Didn't really hang out a lot with this club; so wasn't able to get a good look at everybody's ride.