700 x 23c circumference

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

Quoted message said:

I recently came into possession of a low end Bell cycle computer but

didn't

Quoted message said:

get the documentation. Can anyone confirm the figure I have of 2096mm

for

Quoted message said:

the circumference of a 700x23c?

Let me see, different brands vary but the 23c tires I've rolled out in
the past come out at 82.5" at 110 psi which converts to 2095.5mm.

PH

Brad Hubbard said:

I recently came into possession of a low end Bell cycle computer but didn't
get the documentation. Can anyone confirm the figure I have of 2096mm for
the circumference of a 700x23c?

That looks about right. Test it out against a known kilometer to be sure

Brad Hubbard said:

I recently came into possession of a low end Bell cycle computer but
didn't get the documentation. Can anyone confirm the figure I have of
2096mm for the circumference of a 700x23c?

Thanks for the confirmation/suggestions guys.

Brad

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

Quoted message said:

I recently came into possession of a low end Bell cycle computer but

didn't

Quoted message said:

get the documentation. Can anyone confirm the figure I have of 2096mm for
the circumference of a 700x23c?

Ask rec.bicycles.tech for all your technical cycling needs. also, start
with the valve at a set point on the ground and roll the bike forward while
weighted accordingly one rotation and mark where the valve again touches the
ground. That's your circumference.

JF

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

Quoted message said:

I recently came into possession of a low end Bell cycle computer but

didn't

Quoted message said:

get the documentation. Can anyone confirm the figure I have of 2096mm for
the circumference of a 700x23c?

Put a drop of oil on the tire (not enough to run) and roll it in a straight
line allowing two oil spots to be created on the floor. Measure from front
edge of one to the other. This is a simple, accurate way to find the
circumference of your tire. Just to be anal measure the tire that the
computer will be reading...

-p

Quoted message said:

Brad Hubbard wrote in message ...
I recently came into possession of a low end Bell cycle computer but didn't
get the documentation. Can anyone confirm the figure I have of 2096mm for
the circumference of a 700x23c?

I have a 100' tape measure, so I lay this out, then wrap a piece of masking
tape around the front tire, then I sit on the bike and roll it most of the
100' length of tape, counting tire revolutions. Then simply read off the
distance of the last complete revolution (from the leading edge of the
tape), and divide by the number of wheel revs. Convert to mm. This is more
accurate than trying to measure one revolution.

"Pippen" <[email hidden]> wrote in message

Quoted message said:

. Just to be anal measure the tire that the
computer will be reading...

What does his ass have to do with measuring rollout?

Chris said:

"Pippen" <[email hidden]> wrote in message

Quoted message said:

. Just to be anal measure the tire that the
computer will be reading...

What does his ass have to do with measuring rollout?

Cause if it ain't on the saddle in its usual position he'll get a slightly
different effective diameter.

Ron