Coaster Brake Failure

On 3/2/2019 7:49 AM, Sir Ridesalot wrote:
On Friday, March 1, 2019 at 10:03:53 PM UTC-5, Ralph Barone wrote:
AMuzi wrote:
On 3/1/2019 2:38 PM, Ralph Barone wrote:

I've always thought that it would not be difficult to build a mechanism
that clamps onto the rear derailleur shift cable and uses the rear gear
selection to trim the front derailleur. You don't need a CPU to pull off
that trick.

http://www.velobase.com/ViewComponen...3-2787beac2bb0

Brilliant, just freaking brilliant.

The inside of those shifters is pretty simple too = basically just a cam and recess.

Yes, and I appreciate simplicity and design elegance. They seem a bit
undervalued these days.


--
- Frank Krygowski

On 3/2/2019 9:44 AM, Theodore Heise wrote:


For a couple of years, I used my fixie to get to and from work;
about a 10 mile ride each way. I now live just over a mile away,
which I find too short to mess with bike clothing and stowage.

Holy cow, one mile from work doesn't require a bit of bike clothing! I
rode seven miles each way in office casual clothes.

Granted, I didn't ride every day. But for another job in a southern
state, I was 2.6 miles away and rode every day in office casual
clothing. That was despite some brutal summer heat.

A few years ago I built up a nice lightweight three speed bike. One
specific objective was that it requires absolutely no clothing
adjustments, not even pinning my pant cuffs. I just jump on and ride.
It's fine for rides up to ten miles or so.

--
- Frank Krygowski

On 3/2/2019 11:09 AM, Frank Krygowski wrote:
On 3/2/2019 9:44 AM, Theodore Heise wrote:


For a couple of years, I used my fixie to get to and from
work;
about a 10 mile ride each way. I now live just over a
mile away,
which I find too short to mess with bike clothing and
stowage.

Holy cow, one mile from work doesn't require a bit of bike
clothing! I rode seven miles each way in office casual clothes.

Granted, I didn't ride every day. But for another job in a
southern state, I was 2.6 miles away and rode every day in
office casual clothing. That was despite some brutal summer
heat.

A few years ago I built up a nice lightweight three speed
bike. One specific objective was that it requires absolutely
no clothing adjustments, not even pinning my pant cuffs. I
just jump on and ride. It's fine for rides up to ten miles
or so.


+1
If I had to change clothing or shoes every time I ran an
errand on a bike I'd probably quit riding.

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

Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg

wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket







Mysterious. How the hell did that happen in a design
100+ years
old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums
up the action of "Here we have a working design but
let's optimize it
anyhow" and then it all goes to pots. A very common
scenario in
software design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom mentioned.
People using
library modules that others have written, assuming
everything in those
we be just fine. And then things aren't.

This is one of the reasons why I prefer gear with the
least amount of
electronics and software in there and, for example, will
never be caught
with electronic shifters on a bicycle.

True, but then people also have had the metal shift cables
break and
been restricted to a single gear. It appears that
everything is
subject to failure :-)


That is very rare, more so than a derailer ripped away by a
rock.

Main thing is, with batteries the number of available shifts
per charge is finite. I was told that front shifts are
especially hard on the battery and on mountainous
singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather spend
that on a Rohloff. That one allows shifts across the
complete gear range at very low or zero speed which is very
useful in MTB riding. To heck with the extra weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/



13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger extender and a
11-40T cassette. I hacked it to fit the old 6-speed road bike, now
7-speed. For a guy getting older and having moved into hill country
that makes a major difference. The only downside with such a large
cassette for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water crossing. Then the
chain slaps violently and hits the right chainstay. Happens only when
on the smaller sprockets, due to the flywheel effect. So now there is
a piece of slit pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the jockey
pulley to avoid just this chain-slap problem. Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html

The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My solution
with a $20 derailer and a chunk of plastic hose with three cable ties
leaves $80 to spend at bicycle gas stations, a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the frame and a
hose clamp fix on the steerer greatly reduce the chance of this bike
being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more aesthetically
pleasing fashion, cut a strip out of an old inner tube, then wrap it around
the chainstay and super glue it to itself on the inside of the chainstay.

On Sat, 2 Mar 2019 12:09:27 -0500,
Frank Krygowski wrote:
On 3/2/2019 9:44 AM, Theodore Heise wrote:

For a couple of years, I used my fixie to get to and from
work; about a 10 mile ride each way. I now live just over a
mile away, which I find too short to mess with bike clothing
and stowage.

Holy cow, one mile from work doesn't require a bit of bike
clothing! I rode seven miles each way in office casual clothes.

It does when it's cold or raining. The stowage is a bother too;
specifically, no good place to put the bike at work, time to get
the laptop and paperwork stowed so it will stay dry, and so on.

I understand it's not a big deal, but it's more than I want to
mess with for one mile on the bike.

Also, wWhen it's 90 F/90% RH I'm gonna arrive at work soaked, even
taking it easy. Just not a good trade off. For me. Obviously,
the decision process is dependent on a lot of factors--most of
which are individual preferences.

--
Ted Heise West Lafayette, IN, USA

On 2019-03-02 10:10, Ralph Barone wrote:
Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg

wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket







Mysterious. How the hell did that happen in a design
100+ years
old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums
up the action of "Here we have a working design but
let's optimize it
anyhow" and then it all goes to pots. A very common
scenario in
software design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom mentioned.
People using
library modules that others have written, assuming
everything in those
we be just fine. And then things aren't.

This is one of the reasons why I prefer gear with the
least amount of
electronics and software in there and, for example, will
never be caught
with electronic shifters on a bicycle.

True, but then people also have had the metal shift cables
break and
been restricted to a single gear. It appears that
everything is
subject to failure :-)


That is very rare, more so than a derailer ripped away by a
rock.

Main thing is, with batteries the number of available shifts
per charge is finite. I was told that front shifts are
especially hard on the battery and on mountainous
singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather spend
that on a Rohloff. That one allows shifts across the
complete gear range at very low or zero speed which is very
useful in MTB riding. To heck with the extra weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/



13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger extender and a
11-40T cassette. I hacked it to fit the old 6-speed road bike, now
7-speed. For a guy getting older and having moved into hill country
that makes a major difference. The only downside with such a large
cassette for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water crossing. Then the
chain slaps violently and hits the right chainstay. Happens only when
on the smaller sprockets, due to the flywheel effect. So now there is
a piece of slit pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the jockey
pulley to avoid just this chain-slap problem. Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html

The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My solution
with a $20 derailer and a chunk of plastic hose with three cable ties
leaves $80 to spend at bicycle gas stations, a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the frame and a
hose clamp fix on the steerer greatly reduce the chance of this bike
being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more aesthetically
pleasing fashion, cut a strip out of an old inner tube, then wrap it around
the chainstay and super glue it to itself on the inside of the chainstay.


On the MTB I found that tube rubber wears away really quickly from chain
slap when used as a chainstay protector. What I used was thick clear
plastic tube as it used to be found on pressure-operated swimming pool
sweeps. That leaves the native blue paint effect of my bike intact.
Well, until it becomes scratched and dirty. Nowadays it's often white,
not so pretty. However, thick plastic tubing of various diameters can be
bought cheaply by the foot in hardware stores. That stuff is quite strong.

--
Regards, Joerg

http://www.analogconsultants.com/

On Saturday, March 2, 2019 at 5:24:53 PM UTC-5, Joerg wrote:
On 2019-03-02 10:10, Ralph Barone wrote:
Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg

wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket







Mysterious. How the hell did that happen in a design
100+ years
old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums
up the action of "Here we have a working design but
let's optimize it
anyhow" and then it all goes to pots. A very common
scenario in
software design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom mentioned.
People using
library modules that others have written, assuming
everything in those
we be just fine. And then things aren't.

This is one of the reasons why I prefer gear with the
least amount of
electronics and software in there and, for example, will
never be caught
with electronic shifters on a bicycle.

True, but then people also have had the metal shift cables
break and
been restricted to a single gear. It appears that
everything is
subject to failure :-)


That is very rare, more so than a derailer ripped away by a
rock.

Main thing is, with batteries the number of available shifts
per charge is finite. I was told that front shifts are
especially hard on the battery and on mountainous
singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather spend
that on a Rohloff. That one allows shifts across the
complete gear range at very low or zero speed which is very
useful in MTB riding. To heck with the extra weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/



13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger extender and a
11-40T cassette. I hacked it to fit the old 6-speed road bike, now
7-speed. For a guy getting older and having moved into hill country
that makes a major difference. The only downside with such a large
cassette for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water crossing. Then the
chain slaps violently and hits the right chainstay. Happens only when
on the smaller sprockets, due to the flywheel effect. So now there is
a piece of slit pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the jockey
pulley to avoid just this chain-slap problem. Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html

The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My solution
with a $20 derailer and a chunk of plastic hose with three cable ties
leaves $80 to spend at bicycle gas stations, a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the frame and a
hose clamp fix on the steerer greatly reduce the chance of this bike
being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more aesthetically
pleasing fashion, cut a strip out of an old inner tube, then wrap it around
the chainstay and super glue it to itself on the inside of the chainstay.


On the MTB I found that tube rubber wears away really quickly from chain
slap when used as a chainstay protector. What I used was thick clear
plastic tube as it used to be found on pressure-operated swimming pool
sweeps. That leaves the native blue paint effect of my bike intact.
Well, until it becomes scratched and dirty. Nowadays it's often white,
not so pretty. However, thick plastic tubing of various diameters can be
bought cheaply by the foot in hardware stores. That stuff is quite strong.

--
Regards, Joerg

http://www.analogconsultants.com/

Why not just cut a section of steel pipe lengthwise and hose clamp that? Ypu'd NEVER have to replace it.

Cheers

On 2019-03-02 15:52, Sir Ridesalot wrote:
On Saturday, March 2, 2019 at 5:24:53 PM UTC-5, Joerg wrote:
On 2019-03-02 10:10, Ralph Barone wrote:
Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg
wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket









Mysterious. How the hell did that happen in a design
100+ years old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums up the action of
"Here we have a working design but let's
optimize it anyhow" and then it all goes to
pots. A very common scenario in software
design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom
mentioned. People using library modules that others
have written, assuming everything in those we be
just fine. And then things aren't.

This is one of the reasons why I prefer gear with
the least amount of electronics and software in
there and, for example, will never be caught with
electronic shifters on a bicycle.

True, but then people also have had the metal shift
cables break and been restricted to a single gear. It
appears that everything is subject to failure :-)


That is very rare, more so than a derailer ripped away
by a rock.

Main thing is, with batteries the number of available
shifts per charge is finite. I was told that front
shifts are especially hard on the battery and on
mountainous singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather
spend that on a Rohloff. That one allows shifts across
the complete gear range at very low or zero speed which
is very useful in MTB riding. To heck with the extra
weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/





13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger
extender and a 11-40T cassette. I hacked it to fit the old
6-speed road bike, now 7-speed. For a guy getting older and
having moved into hill country that makes a major
difference. The only downside with such a large cassette
for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water
crossing. Then the chain slaps violently and hits the right
chainstay. Happens only when on the smaller sprockets, due
to the flywheel effect. So now there is a piece of slit
pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the
jockey pulley to avoid just this chain-slap problem.
Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html



The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My
solution with a $20 derailer and a chunk of plastic hose with
three cable ties leaves $80 to spend at bicycle gas stations,
a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the
frame and a hose clamp fix on the steerer greatly reduce the
chance of this bike being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more
aesthetically pleasing fashion, cut a strip out of an old inner
tube, then wrap it around the chainstay and super glue it to
itself on the inside of the chainstay.


On the MTB I found that tube rubber wears away really quickly from
chain slap when used as a chainstay protector. What I used was
thick clear plastic tube as it used to be found on
pressure-operated swimming pool sweeps. That leaves the native blue
paint effect of my bike intact. Well, until it becomes scratched
and dirty. Nowadays it's often white, not so pretty. However, thick
plastic tubing of various diameters can be bought cheaply by the
foot in hardware stores. That stuff is quite strong.

-- Regards, Joerg

http://www.analogconsultants.com/

Why not just cut a section of steel pipe lengthwise and hose clamp
that? Ypu'd NEVER have to replace it.


I'd have to paint that and with all the chain slap it would become rusty
really soon anyhow. I do not like plastic but for some situations it's
really the best option. The plastic tubing has been on there for a few
hundred miles and it is still fine. As a nice side effect that plastic
also muffles the sound.

--
Regards, Joerg

http://www.analogconsultants.com/

Ralph Barone writes:

Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg

wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket







Mysterious. How the hell did that happen in a design
100+ years
old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums
up the action of "Here we have a working design but
let's optimize it
anyhow" and then it all goes to pots. A very common
scenario in
software design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom mentioned.
People using
library modules that others have written, assuming
everything in those
we be just fine. And then things aren't.

This is one of the reasons why I prefer gear with the
least amount of
electronics and software in there and, for example, will
never be caught
with electronic shifters on a bicycle.

True, but then people also have had the metal shift cables
break and
been restricted to a single gear. It appears that
everything is
subject to failure :-)


That is very rare, more so than a derailer ripped away by a
rock.

Main thing is, with batteries the number of available shifts
per charge is finite. I was told that front shifts are
especially hard on the battery and on mountainous
singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather spend
that on a Rohloff. That one allows shifts across the
complete gear range at very low or zero speed which is very
useful in MTB riding. To heck with the extra weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/



13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger extender and a
11-40T cassette. I hacked it to fit the old 6-speed road bike, now
7-speed. For a guy getting older and having moved into hill country
that makes a major difference. The only downside with such a large
cassette for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water crossing. Then the
chain slaps violently and hits the right chainstay. Happens only when
on the smaller sprockets, due to the flywheel effect. So now there is
a piece of slit pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the jockey
pulley to avoid just this chain-slap problem. Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html

The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My solution
with a $20 derailer and a chunk of plastic hose with three cable ties
leaves $80 to spend at bicycle gas stations, a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the frame and a
hose clamp fix on the steerer greatly reduce the chance of this bike
being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more aesthetically
pleasing fashion, cut a strip out of an old inner tube, then wrap it around
the chainstay and super glue it to itself on the inside of the chainstay.

Or just buy a roll of helicopter tape, enough for several dozen bikes.

--

Radey Shouman wrote:
Ralph Barone writes:

Joerg wrote:
On 2019-03-02 08:28, Mark J. wrote:
On 3/2/2019 8:04 AM, Joerg wrote:
On 2019-02-28 18:31, AMuzi wrote:
On 2/28/2019 6:49 PM, Joerg wrote:
On 2019-02-27 14:47, John B. Slocomb wrote:
On Wed, 27 Feb 2019 08:09:04 -0800, Joerg

wrote:

On 2019-02-25 11:42, Tosspot wrote:
On 2/25/19 5:06 PM, Joerg wrote:
On 2019-02-25 07:29, Ralph Barone wrote:
AMuzi wrote:
https://www.bicycleretailer.com/reca...nd-aftermarket







Mysterious. How the hell did that happen in a design
100+ years
old?

They must have improved it.


In German there is the inofficial word
"verschlimmbessern". It sums
up the action of "Here we have a working design but
let's optimize it
anyhow" and then it all goes to pots. A very common
scenario in
software design.

https://www.youtube.com/watch?v=gp_D8r-2hwk


Sometimes those things happen for reasons Tom mentioned.
People using
library modules that others have written, assuming
everything in those
we be just fine. And then things aren't.

This is one of the reasons why I prefer gear with the
least amount of
electronics and software in there and, for example, will
never be caught
with electronic shifters on a bicycle.

True, but then people also have had the metal shift cables
break and
been restricted to a single gear. It appears that
everything is
subject to failure :-)


That is very rare, more so than a derailer ripped away by a
rock.

Main thing is, with batteries the number of available shifts
per charge is finite. I was told that front shifts are
especially hard on the battery and on mountainous
singletrack that's used a lot.

If I had north of $1k burning in my pocket I'd rather spend
that on a Rohloff. That one allows shifts across the
complete gear range at very low or zero speed which is very
useful in MTB riding. To heck with the extra weight.


Old fashioned junk. Try to keep up:

https://bikerumor.com/2019/02/24/rot...pset-at-1785g/



13-speed, yikes. When that has run it's course they'll offer 14-speed.
When will we have CVT for bicycles?

I recently installed a longer rear derailer, a hanger extender and a
11-40T cassette. I hacked it to fit the old 6-speed road bike, now
7-speed. For a guy getting older and having moved into hill country
that makes a major difference. The only downside with such a large
cassette for me is when I stop pedaling too suddenly or pedal
backwards a little to level the cranks for a water crossing. Then the
chain slaps violently and hits the right chainstay. Happens only when
on the smaller sprockets, due to the flywheel effect. So now there is
a piece of slit pool sweep hose on top of that as "sacrificial material".

They make modern rear derailleurs with a "clutch" in/on the jockey
pulley to avoid just this chain-slap problem. Example:
https://bike.shimano.com/en-EU/produ...-RX800-GS.html

The described "on-off switch" is for the clutch.


Interesting! However, that derailer retails north of $100. My solution
with a $20 derailer and a chunk of plastic hose with three cable ties
leaves $80 to spend at bicycle gas stations, a.k.a. brewpubs :-)

An upside is that such kludges along with mud caked onto the frame and a
hose clamp fix on the steerer greatly reduce the chance of this bike
being stolen while in a city.

http://www.analogconsultants.com/ng/bike/Hoseclamp.JPG


If you ever decide to fix it in a similarly cheap, but more aesthetically
pleasing fashion, cut a strip out of an old inner tube, then wrap it around
the chainstay and super glue it to itself on the inside of the chainstay.

Or just buy a roll of helicopter tape, enough for several dozen bikes.


Cool. Never heard of the stuff before. Thanks.