Bike porn

Biopace, oval chainrings before they figured out how they work

jaap's eye's sharp!

oval chainrings before they figured out how they don't work

ftfy

jaap's eye

te he

There was a research paper that showed they work if the oval is larger than 1.5 :1 and at the right spot, I'll try to find a link.

edit: found it.
http://www.noncircularchainring.be/pdf/Biomechanical%20study%20chainrings%20-%20release%202.pdf
But.. Its only a mathematical model. no testing. so maybe dubious results

Thanks!

-deleted-

Its only a mathematical model

If we apply Occam's Razor instead of a mathematical model, we can easily see that oval rings don't work. How much of a gain in efficiency would be needed to ensure that a technology would be adopted by every rider in the professional peloton? An increase in power output of 1% would be worth about 15 minutes in a 80 hour Grand Tour :-)

what about oval rings on SS mtb?

For a living I develop mathematical models. Would i ever suggest they related to actual real life? No.

So if that 1% was also true in real life and it was a perfect situation and no one else was using that technology, Bauke Mollema, who was in 7th place, could have won the Tour de France if he had just that. That's amazing. :-)

Tbh, never rode with oval rings and I don't think they work (sounds a bit like L shaped crank arm technology), but a 1% performance increase in a Grand Tour would be something every team wants.

Still a nice Nago though.

Looks like it has some serious potential

EDIT: Maybe a less garish paint job would suit it better.

HHSFunctional?

Monster, Monsteur, Monstour , 26/29+ and Expedition and Adventure bikes

Perfect :)

From CPs

it is perfect because it has garish paint job imo

dat!

thanks! @HHC

1 Attachment

Rossin
actually made me gasp very quietly.
mmmm.

Why are you doing this to me! Now I need to rob a bank ;)