[hpv] Chain rings

[Bill Patterson]

Carey,

I have a triple in front 30-48-68 in front with a 12x28 in back. I am on a low
racer with a 20 inch drive wheel. I think a 34 tooth cluster gear would be a good
idea for my bike. I could spend more time on the big ring. I can't seem to get the
hang of spinning my front drive bikes.

photo at

http://www.geocities.com/SouthBeach/Inlet/5986/bike.html

I am using my finger to shift the front. I use the 48 in town and shift to the 68
tooth king ring in the countryside. It takes me a long time to sort out all the
niceties of my new bikes.

Bill

Carey Chen wrote:

I have the same problem, what I've ended up doing is using a single 60

> or 63 tooth chainring and a 9 speed 11-34. The 60 gives me a low of 32.6
>
> Carey (Outlander) Chen...

[GSS...@aol.com]

In a message dated 12/29/98 7:03:08 PM, wy...@lightspeed.net wrote:

<<I have a triple in front 30-48-68 in front with a 12x28 in back. I am on a
low
racer with a 20 inch drive wheel. I think a 34 tooth cluster gear would be a
good
idea for my bike. I could spend more time on the big ring. I can't seem to get
the
hang of spinning my front drive bikes.>>

With what do you shift that spread. I can't get my shimano 105 triple to
shift my 34/46/58 well.

Gunther Stern

[Joshua_Putnam]

Bill Patterson writes:

>I am using my finger to shift the front. I use the 48 in town and shift to the 68
>tooth king ring in the countryside.

I've seen some nicely done extended front derailleur cages if you
get tired of chaingreased fingers. I'm not sure who, if anyone,
makes them commercially, but a front derailleur is a pretty
simple device, and if you don't need bright-polished chrome, it
should be easy to make, say, a stainless cage.

Which reminds me of an interesting homebrewed front derailleur
cage I saw on a bike in a rack recently, no idea who owned the
bike or who made the cage: instead of a noisy sheet metal cage,
it had a pair of parallel rubber rollers, like miniature conveyor
belt rollers, one on each side of the chain. It looked, off
hand, like something that would be able to shift quietly under
load, and the basic design should work just as well on a huge
range triple. Anyone know more about that design?

--

Jo...@WolfeNet.com is Joshua Putnam / P.O. Box 13220 / Burton, WA 98013
"My other bike is a car."
http://www.wolfenet.com/~josh/

[William J. Cook]

At 11:59 AM 12/29/98 -0800, you wrote:
>Bill Patterson writes:
>
>>I am using my finger to shift the front. I use the 48 in town and shift
to the 68
>>tooth king ring in the countryside.
>
>I've seen some nicely done extended front derailleur cages if you
>get tired of chaingreased fingers. I'm not sure who, if anyone,
>makes them commercially, but a front derailleur is a pretty
>simple device, and if you don't need bright-polished chrome, it
>should be easy to make, say, a stainless cage.
>

Zach Kaplan sells modified front derailers.

William J. Cook, bc...@clark.net, 202-955-2493 |Caution: Objects
Senior Writer, U.S.News & World Report |on calendar are
2400 N St. NW, Washington, DC 20037 |closer than they
Recumbent bike rider/amateur frame builder |appear.

[Rob Hague/Somerset,UK]

Gunther Stern posted:

>With what do you shift that spread. I can't get my shimano 105 triple >to
shift my 34/46/58 well.

I have no problems shifting with 26/40/52 using a 1993 XT front mech and
barcon... the 105 looks pretty much the same...

Rob.

------------------------------

[William Volk]

Gunther asks:

>With what do you shift that spread [30-48-68]. I can't get my shimano 105

triple to
>shift my 34/46/58 well.

I don't know what Bill P. uses, but I shift a 32-54-58 and could easily deal
with a 24-54-63 with the Sachs 5000 long cage front derailler. I also set
up the derailler tube so that it's as far 'back' as possible. This makes
the shifting fast and reliable.

Bill