chain guard cassette?

[email hidden] wrote in news:1113428225.332848.278630
@o13g2000cwo.googlegroups.com:

Quoted message said:

speed internal hub=32!!
have a wallbanger and check out the IBM's cassette
and it's your $$$$$ for development!!
from woolmort to china.

Maybe if you learned to speak English, someone would understand what you were
asking.

[email hidden] wrote:

:> wham wham wham sorry, a triffid came in and i ...

: Question would be: is this possible given current technology? Is there
: a belt drive operating at or better than the efficiency level of a metal
: chain and sprocket, or is the cost of non-metal cycle drivetrains
: prohibitive at, say, a 20k mile lifetime? No dirt remember, this is
: completely enclosed.

There, see how much nicer that looks?

- Mark

you have no soul no imagimnation no creative spark no love of poetry
motion fluidity
you are stagnant you are dying intellectually
and your breath stinks

Quoted message said:

wham wham wham sorry, a triffid came in and i ...

question would be-is this possible given current technology
is there a belt drive operating at or better than the efficiency level
of a metal chain and sprocket
or is the cost of non-metal cycle drivetrains
prohibitive
at say a 20k mile lifetime-
no dirt remember-this is completelyenclosed

Quoted message said:

Quoted message said:

wham wham wham sorry, a triffid came in and i ...

question would be-is this possible given current technology
is there a belt drive operating at or better than the efficiency level
of a metal chain and sprocket
or is the cost of non-metal cycle drivetrains
prohibitive
at say a 20k mile lifetime-
no dirt remember-this is completelyenclosed

I don't think the non-metallic toothed or linked belts are there yet. They still
seem to require much too much tension to compete with the chain for efficiency
at cycling levels of torque.

Ron

RonSonic said:

I don't think the non-metallic toothed or linked belts are there yet.

They still

Quoted message said:

seem to require much too much tension to compete with the chain for

efficiency

Quoted message said:

at cycling levels of torque.

Toothed belts have been used on Japanese-market bicycles since 1982 (at
least): http://www.bscycle.com.cn/english/history.htm . They're used on
folding or travel bikes to avoid using an exposed oily chain:
http://www.ixibike.com/home.htm

Of course, you're restricted to a single-speed or internal gear
arrangement.

And yes, I've completely avoided the "drivetrain efficiency" argument.
:-)

Jeff

belt tension is a first question and i have yet to fool with an auto
toothed gear belt as in the fwd alt/pump/ac mess unit

but the idea is that the cycle's drivetrain with belt comes from the
factory as a tensioned unit
that the protective shell is integral to the tension
and installation is placement of the CR to cluster shell with f/r
deray's inside also as mono frame

what do they talk about in Vegas?

wham wham wham

ship it!!!

Quoted message said:

wham wham wham

ship it!!!

You *must* be a software developer.

Jeff