Chain case

[Ted]

I am considering constructing an enclosed chain case, in the interests
of cleanliness and chain longevity. This is for a derailleur-free bike,
and there will have to be some provision for allowing the rear axle to
be moved, for adjusting chain tension. I expect that chain tensioning
will have to be done far less frequently.

Does anyone have any suggestions on what material to use, and how to
design it so that it doesn't drip oil and yet can be (partially)
dismantled to allow the rear wheel to be removed?

Thanks,
Ted

--
Ted Bennett
Portland, OR

 

[[email protected]]

This sounds like an interesting project. I often ride a 'fixie' and
have thought that a chaincase might be nice to have.

Do you have access to an 'older' British Raleigh?

I know some of them had fine looking chaincases.
Lewis.

***************

 

[A Muzi]

Ted wrote:

> I am considering constructing an enclosed chain case, in the interests
> of cleanliness and chain longevity. This is for a derailleur-free bike,
> and there will have to be some provision for allowing the rear axle to
> be moved, for adjusting chain tension. I expect that chain tensioning
> will have to be done far less frequently.
>
> Does anyone have any suggestions on what material to use, and how to
> design it so that it doesn't drip oil and yet can be (partially)
> dismantled to allow the rear wheel to be removed?


The traditional sheet metal works as long as you can stand
the rattles. New Euro nylon designs snap apart in to a top
and bottom segmant with two snap - in strips at the center
opening. Look at a Kettker/Batavus/Olympia, etc at an LBS
up close. The new types are two about equal pieces so you
need not have a bolt-in seatstay.

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

 

[Peter Cole]

"Ted" <[email protected]> wrote in message
news:[email protected]
> I am considering constructing an enclosed chain case,
>
> Does anyone have any suggestions on what material to use, and how to
> design it

http://www.phred.org/~alex/bikes/chaincase.html

 

[Jim Hall]

Ted wrote:

>I am considering constructing an enclosed chain case, in the interests
>of cleanliness and chain longevity. This is for a derailleur-free bike,
>and there will have to be some provision for allowing the rear axle to
>be moved, for adjusting chain tension. I expect that chain tensioning
>will have to be done far less frequently.
>
>Does anyone have any suggestions on what material to use, and how to
>design it so that it doesn't drip oil and yet can be (partially)
>dismantled to allow the rear wheel to be removed?
>
>Thanks,
>Ted
>
>
>
chain tube, like they use on many euro recumbent bikes.

 

[Ted]

Jim Hall <[email protected]> wrote:

> Ted wrote:
>
> >I am considering constructing an enclosed chain case, in the interests
> >of cleanliness and chain longevity. This is for a derailleur-free bike,
> >and there will have to be some provision for allowing the rear axle to
> >be moved, for adjusting chain tension. I expect that chain tensioning
> >will have to be done far less frequently.
> >
> >Does anyone have any suggestions on what material to use, and how to
> >design it so that it doesn't drip oil and yet can be (partially)
> >dismantled to allow the rear wheel to be removed?

> chain tube, like they use on many euro recumbent bikes.



I'm aware of those, but I'm interested in a full enclosure. Running the
chain through tubes leaves the chain exposed around the sprockets.

Ted

--
Ted Bennett
Portland, OR

 

[Ted]

A Muzi <[email protected]> wrote:

> Ted wrote:
>
> > I am considering constructing an enclosed chain case, in the interests
> > of cleanliness and chain longevity. This is for a derailleur-free bike,
> > and there will have to be some provision for allowing the rear axle to
> > be moved, for adjusting chain tension. I expect that chain tensioning
> > will have to be done far less frequently.
> >
> > Does anyone have any suggestions on what material to use, and how to
> > design it so that it doesn't drip oil and yet can be (partially)
> > dismantled to allow the rear wheel to be removed?
>
>
> The traditional sheet metal works as long as you can stand
> the rattles. New Euro nylon designs snap apart in to a top
> and bottom segmant with two snap - in strips at the center
> opening. Look at a Kettker/Batavus/Olympia, etc at an LBS
> up close. The new types are two about equal pieces so you
> need not have a bolt-in seatstay.

Thanks, Andrew, that is helpful.

Ted

--
Ted Bennett
Portland, OR

 

[Jim Hall]

wouldn't be too hard to encase the rear cluster with a plastic box, and
drill holes for the drive and return portion of the chain with a chain
tube entering the box, would be much more quiet than metal, and teflon
chain tubes are pretty efficent for power transmission

Ted wrote:

>Jim Hall <[email protected]> wrote:
>
>
>
>>Ted wrote:
>>
>>
>>
>>>I am considering constructing an enclosed chain case, in the interests
>>>of cleanliness and chain longevity. This is for a derailleur-free bike,
>>>and there will have to be some provision for allowing the rear axle to
>>>be moved, for adjusting chain tension. I expect that chain tensioning
>>>will have to be done far less frequently.
>>>
>>>Does anyone have any suggestions on what material to use, and how to
>>>design it so that it doesn't drip oil and yet can be (partially)
>>>dismantled to allow the rear wheel to be removed?
>>>
>>>
>
>
>
>> <>chain tube, like they use on many euro recumbe
>>
>> I'm aware of those, but I'm interested in a full enclosure. Running the
>> chain through tubes leaves the chain exposed around the sprockets.
>>
>> Ted
>>

 

[Ted]

In article <[email protected]>,
Jim Hall <[email protected]> wrote:

> wouldn't be too hard to encase the rear cluster with a plastic box, and
> drill holes for the drive and return portion of the chain with a chain
> tube entering the box, would be much more quiet than metal, and teflon
> chain tubes are pretty efficent for power transmission

Yes, that is what I have envisioned, but a "box" would have to be
separable to allow installation and removal. The appearance would be
improved by incorporating curved surfaces. I think such a part could be
made in some composite material. This is intended for a single rear
cog. Enclosing a cluster and derailleur would require a big ugly thing.

I'm not sure what you mean by teflon tubes being efficient for power
transmission. Power is transmitted by the chain, and the chain will not
contact the tube except for when it sags as when coasting, in which case
it does not slide in the tube.

Ted
>
> Ted wrote:
>
> >Jim Hall <[email protected]> wrote:
> >
> >
> >
> >>Ted wrote:
> >>
> >>
> >>
> >>>I am considering constructing an enclosed chain case, in the interests
> >>>of cleanliness and chain longevity. This is for a derailleur-free bike,
> >>>and there will have to be some provision for allowing the rear axle to
> >>>be moved, for adjusting chain tension. I expect that chain tensioning
> >>>will have to be done far less frequently.
> >>>
> >>>Does anyone have any suggestions on what material to use, and how to
> >>>design it so that it doesn't drip oil and yet can be (partially)
> >>>dismantled to allow the rear wheel to be removed?
> >>>
> >>>
> >
> >
> >
> >> <>chain tube, like they use on many euro recumbe
> >>
> >> I'm aware of those, but I'm interested in a full enclosure. Running the
> >> chain through tubes leaves the chain exposed around the sprockets.
> >>
> >> Ted
> >>

--
Ted Bennett
Portland, OR

 

[Andreas Oehler]

Sun, 19 Dec 2004 20:12:59 GMT, Ted:

>Jim Hall <[email protected]> wrote:

>> chain tube, like they use on many euro recumbent bikes.
>
>I'm aware of those, but I'm interested in a full enclosure. Running the
>chain through tubes leaves the chain exposed around the sprockets.

Look at the following solutions, which are already available in Germany
for some time:

Chain Tubes in combination with plastic enclosures:
http://www.utopia-fahrrad.de/Zubehoer_Html/Kapitel_Html/141_Country_Nachruesten_17.html

Different chain cases:
http://www.vsf-all-ride.de/VSF-Flyer.pdf

Andreas