Giro Fixie!

GPLama said:

"The prologue of this year's Giro d'Italia is 1,150m long, straight and
flat. Hardly seems worth lugging around a time trial bike with gears and all
the trimmings for does it? Stuart O'Grady doesn't think so either as he'll
be rolling out of the start house on a very special one-off fixed-wheel
Wilier. "

http://www.cyclingnews.com/road/2005/giro05/tech/?id=wilier

cheers,
GPL

Dang! beat me to it!

53 (or 54T) x 14T

102 or 104 inches of fun. woot!

go fixie 😄

"DaveB" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

flyingdutch said:

Dang! beat me to it!

53 (or 54T) x 14T 102 or 104 inches of fun. woot!

go fixie 😄

How is the size in inches (keep it clean fellas) calculated from front and
rear teeth.?

DaveB

It goes back (I think) to the days when a penny-farthing was a "standard"
bike. When the "safety" bike came out, they couldn't just quote the diameter
of the driven wheel in inches to indicate gearing anymore. So "gear inches"
is wheel diameter multiplied by the gearing to give the diameter of the
wheel size you'd be talking about if you had a penny-farthing that went that
distance with each revolution of the pedals. Clear as mud?

Resound said:

>

Quoted message said:

How is the size in inches (keep it clean fellas) calculated from front and
rear teeth.?

DaveB

panix.comc41strt.cgiOpen ↗

"flyingdutch" <[email hidden]> wrote in
message news:[email hidden]...

Quoted message said:

Resound said:

Quoted message said:

How is the size in inches (keep it clean fellas) calculated from

front and

Quoted message said:

rear teeth.?

DaveB

http://www.panix.com/~jbarrm/pcgi-bin/c41strt.cgi

--
flyingdutch

It works on the assumption that you know what diameter the wheel is.
Multiply diameter of wheel in inches by chainring, divide by rear cog.