Latest gear shift tech

On Friday, March 19, 2021 at 1:32:37 PM UTC-7, wrote:
Op vrijdag 19 maart 2021 om 20:41:42 UTC+1 schreef Frank Krygowski:
On 3/19/2021 1:40 PM, jbeattie wrote:
On Friday, March 19, 2021 at 9:21:24 AM UTC-7, Frank Krygowski wrote:
On 3/19/2021 12:01 PM, jbeattie wrote:
On Friday, March 19, 2021 at 8:36:57 AM UTC-7, Frank Krygowski wrote:
On 3/19/2021 9:23 AM, Sir Ridesalot wrote:
On Thursday, March 18, 2021 at 10:09:35 p.m. UTC-4, John B. wrote:
On Thu, 18 Mar 2021 20:21:14 -0500, AMuzi wrote:

On 3/18/2021 5:50 PM, John B. wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

But Frank, it avoids the necessity of having to learn such intricate
skills as shifting with those infernal manual down tube shifters :-)

A note here Eddy Merckz - reckoned by some as the greatest bicycle
racer of all times used down tube shifters.
http://internationalcyclesport.com/h...1969_bike.html


Well, there is that famous Eddy quotation.

When presenting Merckx with a bike equipped with the very
new DuraAce SIS Six, Mr Shimano said, "You'll never miss a
shift!"

To which Himself replied, "I haven't missed a shift since I
was 12 years old."
Along those lines I remember an article comparing "modern" bikes with
"old Time" bicycles and some of the riders complaining how "dangerous
it was to take one hand off the handle bar to shift". I can't remember
the article (Frank probably can) but I do remember how strange I
thought it was as I had never owned a multi speed bike that didn't
shift on the down tube :-)
--
Cheers,

John B.

I can only imagine how dangerous they think it is to eat whilst riding or to remove or put on a bicycling jacket whilst riding.

I guess they use water bags and hose to drink from as it'd be too dangerous to reach for a water bottle and then drink from it whilst riding with just one hand.
I believe the article John refers to was the one in which several young
racers were asked to compare modern racing bikes with those from the
1980s. (They sang loud praises of more gears, more rigidity, better
aero, etc. but their climbing speeds correlated exactly with total
weight - a fact the author didn't understand.)

Regarding purported "danger" of moving one's hand: How many here have
taken off a jacket while riding? Or taken off a rain cape? Thrown rocks
at a chasing dog? Pushed another cyclist up a hill? "Ghost ridden" a
bike alongside the one you were riding? I've done all those and more.

Its not danger avoidance, but with STI, you can shift out of a corner riding shoulder to shoulder in a crit, or while you're climbing out of the saddle or even sprinting out of the saddle with Di2, which seems to be pretty resistant to mishaps when shifting under power. There are a lot of times when you don't want to take your hands off he bars but still want to shift -- like when you are eating or drinking with one hand. I do it all the time when drinking or eating on a climb. All the things you mention I've done and shifted at the same time, except taking off my jacket, which I do no-hands. Pushing my lug of a son, I was frantically shifting with my right hand to avoid stalling on a modest incline. He's big.
I agree, if I were racing (especially crits) I'd demand STI.

I wonder what percentage of STI-equipped bikes ever see a race.

Except you omitted every other benefit I mentioned. STI did make a big difference racing, but it also makes a big difference JRA if you want to shift without having to sit down or when you want to keep hands on the bars or shift with one hand off the bars. It's great climbing because you can keep your hands on the bars and run up the gears one by one without the DT hokey-pokey. I'm constantly getting out of the saddle to grind up some hill and shifting out of the saddle, or I'm sitting down, not wanting to take my hand off the bars climbing local trails, which are part of a normal road ride around here -- getting bounced around over baby heads as the slope increases.
OK, STI is not about danger avoidance (although the young racers in that
old article claimed it was) and it's very handy for racing (although
almost none of the people using it actually race). And it's great for
people who constantly stand up to grinding up some hill and want to
shift. That's all fine.

I rarely, rarely stand to grind up a hill. In fact, unless we're on the
tandem, I almost never use my super-low granny gear. I may stand briefly
to charge a short uphill, but I don't often need to shift while
standing. I have done it occasionally, though, using my bar-end
shifters. It's certainly not as easy as STI, but it's doable.

I'm a guy who can ride with two, or one, or no hands, who doesn't race
and who doesn't frequently shift while standing. I prefer simple
mechanisms that are easily repairable in the rare instances that they fail.

Obviously, YMMV.

--
Nobody is forcing you to use STI. Everybody here can ride with two, one or no hands.

Jay has all of the new stuff and doesn't seem to have any problems with it. You must be thinking of someone else.

On Fri, 19 Mar 2021 15:08:36 -0500,
AMuzi wrote:
On 3/19/2021 2:24 PM, Ralph Barone wrote:
Frank Krygowski wrote:
On 3/19/2021 12:01 PM, jbeattie wrote:

Its not danger avoidance, but with STI, you can shift out of
a corner riding shoulder to shoulder in a crit, or while
you're climbing out of the saddle or even sprinting out of
the saddle with Di2, which seems to be pretty resistant to
mishaps when shifting under power. There are a lot of times
when you don't want to take your hands off he bars but still
want to shift -- like when you are eating or drinking with
one hand. I do it all the time when drinking or eating on a
climb. All the things you mention I've done and shifted at
the same time, except taking off my jacket, which I do
no-hands. Pushing my lug of a son, I was frantically
shifting with my right hand to avoid stalling on a modest
incline. He's big.

I agree, if I were racing (especially crits) I'd demand STI.

I wonder what percentage of STI-equipped bikes ever see a
race.

Whenever two cyclists are riding in the same direction on the
same road/path/trail, at least one of them is racing.

+1

So true. When we're out on the tandem I can without exception
tell when my wife first spies a rider ahead by the uptick in power
from the back.

--
Ted Heise West Lafayette, IN, USA

Op vrijdag 19 maart 2021 om 21:48:47 UTC+1 schreef :
On Friday, March 19, 2021 at 1:32:37 PM UTC-7, wrote:
Op vrijdag 19 maart 2021 om 20:41:42 UTC+1 schreef Frank Krygowski:
On 3/19/2021 1:40 PM, jbeattie wrote:
On Friday, March 19, 2021 at 9:21:24 AM UTC-7, Frank Krygowski wrote:
On 3/19/2021 12:01 PM, jbeattie wrote:
On Friday, March 19, 2021 at 8:36:57 AM UTC-7, Frank Krygowski wrote:
On 3/19/2021 9:23 AM, Sir Ridesalot wrote:
On Thursday, March 18, 2021 at 10:09:35 p.m. UTC-4, John B. wrote:
On Thu, 18 Mar 2021 20:21:14 -0500, AMuzi wrote:

On 3/18/2021 5:50 PM, John B. wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

But Frank, it avoids the necessity of having to learn such intricate
skills as shifting with those infernal manual down tube shifters :-)

A note here Eddy Merckz - reckoned by some as the greatest bicycle
racer of all times used down tube shifters.
http://internationalcyclesport.com/h...1969_bike.html


Well, there is that famous Eddy quotation.

When presenting Merckx with a bike equipped with the very
new DuraAce SIS Six, Mr Shimano said, "You'll never miss a
shift!"

To which Himself replied, "I haven't missed a shift since I
was 12 years old."
Along those lines I remember an article comparing "modern" bikes with
"old Time" bicycles and some of the riders complaining how "dangerous
it was to take one hand off the handle bar to shift". I can't remember
the article (Frank probably can) but I do remember how strange I
thought it was as I had never owned a multi speed bike that didn't
shift on the down tube :-)
--
Cheers,

John B.

I can only imagine how dangerous they think it is to eat whilst riding or to remove or put on a bicycling jacket whilst riding.

I guess they use water bags and hose to drink from as it'd be too dangerous to reach for a water bottle and then drink from it whilst riding with just one hand.
I believe the article John refers to was the one in which several young
racers were asked to compare modern racing bikes with those from the
1980s. (They sang loud praises of more gears, more rigidity, better
aero, etc. but their climbing speeds correlated exactly with total
weight - a fact the author didn't understand.)

Regarding purported "danger" of moving one's hand: How many here have
taken off a jacket while riding? Or taken off a rain cape? Thrown rocks
at a chasing dog? Pushed another cyclist up a hill? "Ghost ridden" a
bike alongside the one you were riding? I've done all those and more.

Its not danger avoidance, but with STI, you can shift out of a corner riding shoulder to shoulder in a crit, or while you're climbing out of the saddle or even sprinting out of the saddle with Di2, which seems to be pretty resistant to mishaps when shifting under power. There are a lot of times when you don't want to take your hands off he bars but still want to shift -- like when you are eating or drinking with one hand. I do it all the time when drinking or eating on a climb. All the things you mention I've done and shifted at the same time, except taking off my jacket, which I do no-hands. Pushing my lug of a son, I was frantically shifting with my right hand to avoid stalling on a modest incline. He's big.
I agree, if I were racing (especially crits) I'd demand STI.

I wonder what percentage of STI-equipped bikes ever see a race.

Except you omitted every other benefit I mentioned. STI did make a big difference racing, but it also makes a big difference JRA if you want to shift without having to sit down or when you want to keep hands on the bars or shift with one hand off the bars. It's great climbing because you can keep your hands on the bars and run up the gears one by one without the DT hokey-pokey. I'm constantly getting out of the saddle to grind up some hill and shifting out of the saddle, or I'm sitting down, not wanting to take my hand off the bars climbing local trails, which are part of a normal road ride around here -- getting bounced around over baby heads as the slope increases.
OK, STI is not about danger avoidance (although the young racers in that
old article claimed it was) and it's very handy for racing (although
almost none of the people using it actually race). And it's great for
people who constantly stand up to grinding up some hill and want to
shift. That's all fine.

I rarely, rarely stand to grind up a hill. In fact, unless we're on the
tandem, I almost never use my super-low granny gear. I may stand briefly
to charge a short uphill, but I don't often need to shift while
standing. I have done it occasionally, though, using my bar-end
shifters. It's certainly not as easy as STI, but it's doable.

I'm a guy who can ride with two, or one, or no hands, who doesn't race
and who doesn't frequently shift while standing. I prefer simple
mechanisms that are easily repairable in the rare instances that they fail.

Obviously, YMMV.

--
Nobody is forcing you to use STI. Everybody here can ride with two, one or no hands.
Jay has all of the new stuff and doesn't seem to have any problems with it. You must be thinking of someone else.

I know. I was not talking to Jay.

Lou

On Fri, 19 Mar 2021 12:19:18 -0400, Frank Krygowski
wrote:

On 3/18/2021 11:05 PM, Jeff Liebermann wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

Would a dynamo powered shifting system be acceptable?
If not, trade in your dynamo powered headlight and go back to kerosene
or carbide lanterns.

I wonder if I'm the only one here who has tried riding with an old
kerosene headlamp?

I bought one at an antique shop and tested it on dark neighborhood
streets. It convinced me that people's night vision must have been much
better back in those days!

Which would have been likely anyway, I suppose. Before Edison, the world
was a very dark place indeed, much darker than we're used to. Night
vision wasn't hampered by glare from ubiquitous lights. People were
accustomed to getting by with lighting that was very dim by our standards.

When I was in Japan I rode a bike with incandescent lights and a
bottle generator back and forth to work and found it no problem what
so ever. Simply ride within the limits of the lights that you have.
and I suggest that riding with a kerosene lamp cold be accomplished
the same way.
--
Cheers,

John B.

On Fri, 19 Mar 2021 08:53:11 -0500, AMuzi wrote:

On 3/18/2021 10:05 PM, Jeff Liebermann wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

Would a dynamo powered shifting system be acceptable?
If not, trade in your dynamo powered headlight and go back to kerosene
or carbide lanterns.
https://phobia.wikia.org/wiki/Electrophobia

There is a place where things are less complexicated.
https://www.washingtonpost.com/news/in-sight/wp/2018/06/22/inside-the-u-s-s-national-radio-quiet-zone-where-theres-no-wifi-or-cellphone-service/
https://www.npr.org/sections/alltechconsidered/2013/10/08/218976699/enter-the-quiet-zone-where-cell-service-wi-fi-are-banned
No cell phones, wi-fi, microwave ovens, ham radio, high power
broadcasting, cableTV(?), or wireless bicycle shifting systems.
Seems like a Luddites paradise.



Why would anyone fear electricity?

https://www.msn.com/en-in/news/other...ra/ar-BB1exDqU

Hardly a unique happening. After all golfers have been warned for
years about lightening strikes on the course. Even professional
golfers like Lee Trevino, Jerry Heard and Bobby Nichols were hit by
lightening... in 1975.
--
Cheers,

John B.

On Fri, 19 Mar 2021 08:53:41 -0500, AMuzi wrote:

On 3/18/2021 10:19 PM, John B. wrote:
On Thu, 18 Mar 2021 20:05:30 -0700, Jeff Liebermann
wrote:

On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

Would a dynamo powered shifting system be acceptable?
If not, trade in your dynamo powered headlight and go back to kerosene
or carbide lanterns.
https://phobia.wikia.org/wiki/Electrophobia

There is a place where things are less complexicated.
https://www.washingtonpost.com/news/in-sight/wp/2018/06/22/inside-the-u-s-s-national-radio-quiet-zone-where-theres-no-wifi-or-cellphone-service/
https://www.npr.org/sections/alltechconsidered/2013/10/08/218976699/enter-the-quiet-zone-where-cell-service-wi-fi-are-banned
No cell phones, wi-fi, microwave ovens, ham radio, high power
broadcasting, cableTV(?), or wireless bicycle shifting systems.
Seems like a Luddites paradise.

Goodness! There really is life without a smart phone?


Works for me.

Well, probably you aren't a Twit and therefore don't feel the urge to
twitter :-)
--
Cheers,

John B.

On Fri, 19 Mar 2021 06:23:58 -0700 (PDT), Sir Ridesalot
wrote:

On Thursday, March 18, 2021 at 10:09:35 p.m. UTC-4, John B. wrote:
On Thu, 18 Mar 2021 20:21:14 -0500, AMuzi wrote:

On 3/18/2021 5:50 PM, John B. wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

But Frank, it avoids the necessity of having to learn such intricate
skills as shifting with those infernal manual down tube shifters :-)

A note here Eddy Merckz - reckoned by some as the greatest bicycle
racer of all times used down tube shifters.
http://internationalcyclesport.com/h...1969_bike.html


Well, there is that famous Eddy quotation.

When presenting Merckx with a bike equipped with the very
new DuraAce SIS Six, Mr Shimano said, "You'll never miss a
shift!"

To which Himself replied, "I haven't missed a shift since I
was 12 years old."
Along those lines I remember an article comparing "modern" bikes with
"old Time" bicycles and some of the riders complaining how "dangerous
it was to take one hand off the handle bar to shift". I can't remember
the article (Frank probably can) but I do remember how strange I
thought it was as I had never owned a multi speed bike that didn't
shift on the down tube :-)
--
Cheers,

John B.

I can only imagine how dangerous they think it is to eat whilst riding or to remove or put on a bicycling jacket whilst riding.

I guess they use water bags and hose to drink from as it'd be too dangerous to reach for a water bottle and then drink from it whilst riding with just one hand.

Cheers

Or, The Gods Forbid! Use their hand phone.
--
Cheers,

John B.

On Fri, 19 Mar 2021 08:51:24 -0500, AMuzi wrote:

On 3/18/2021 9:56 PM, jbeattie wrote:
On Thursday, March 18, 2021 at 6:30:42 PM UTC-7, Frank Krygowski wrote:
On 3/18/2021 9:05 PM, James wrote:
On 19/3/21 9:50 am, John B. wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/


When did maximum complexity become a bike design goal?

But Frank, it avoids the necessity of having to learn such intricate
skills as shifting with those infernal manual down tube shifters :-)

A note here Eddy Merckz - reckoned by some as the greatest bicycle
racer of all times used down tube shifters.
http://internationalcyclesport.com/h...1969_bike.html


If Eddy was a true believer in down tube shifters, surely his range of
bicycles sold today would reflect that?

https://www.eddymerckx.com/
Well, since hairs always require splitting he

1) Perhaps Eddy _was_ a true believer in down tube shifters (compared to
what? Rod shifters? Bar end shifters?) but _now_ has a different opinion.

2) Or perhaps Eddy still personally prefers down tube shifters (there
are those who do) but realizes that he'd sell far fewer bikes if that
was the default on his bikes.

More seriously, I don't know how enthusiastic Eddy was about technology
changes back in his glory days. Perhaps he wasn't much interested?
Unlike say LeMond, he didn't seem to need technological advances to win.

A few decades before the Merckx era, races were won and lost based on who did or didn't have a derailleur. During the Merckx era, technology was drillium and maybe a Ti bit and tires. Merckx didn't have a lot of choices, although he apparently believed in the magic of frame builders, considering his allegiance to Ugo, unless he just likes the guy. As for the over-all effect of technology, TdF average speeds are 2-4 mph average over the early Merckx years. It could be better drugs. Who knows.

LeMond's belief in technology got him the win in 1989 -- or Fignon's disbelief cost him the race. Some technology makes a big difference for civilians -- and a lot not. I love STI. Electronic is not a game changer for me. It's kind of neat. Clincher technology is now great, having tried everything starting with the first Elans and Turbos. It probably wasn't until 20 years ago that they really caught up with tubulars. I like discs on my rain bike and commuter. Compact and lots of gears are mitigating my decrepitude and bad knees. I couldn't turn the gears I rode thirty years ago. Ebikes have my wife riding again -- along with a bunch of the old ladies in the neighborhood. It's like ebike old-lady gangs.

-- Jay Beattie.


You're old enough to remember when the advent of integrated
shifters changed race tactics forever. Not seeing a hand
reach down to shift allowed a split second advantage.

Yes, for all the modern "need" for handlebar mounted shifters the
first article I read about the "new shifters" had a comment by a
professional racer that it, as you say, gave him an advantage of being
able to shift without "the other guy" seeing him.
--
Cheers,

John B.

On 3/19/2021 6:44 PM, John B. wrote:
On Fri, 19 Mar 2021 12:19:18 -0400, Frank Krygowski
wrote:

On 3/18/2021 11:05 PM, Jeff Liebermann wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/

When did maximum complexity become a bike design goal?

Would a dynamo powered shifting system be acceptable?
If not, trade in your dynamo powered headlight and go back to kerosene
or carbide lanterns.

I wonder if I'm the only one here who has tried riding with an old
kerosene headlamp?

I bought one at an antique shop and tested it on dark neighborhood
streets. It convinced me that people's night vision must have been much
better back in those days!

Which would have been likely anyway, I suppose. Before Edison, the world
was a very dark place indeed, much darker than we're used to. Night
vision wasn't hampered by glare from ubiquitous lights. People were
accustomed to getting by with lighting that was very dim by our standards.

When I was in Japan I rode a bike with incandescent lights and a
bottle generator back and forth to work and found it no problem what
so ever. Simply ride within the limits of the lights that you have.
and I suggest that riding with a kerosene lamp cold be accomplished
the same way.

My first dyno light was an oddball Soubitez with the headlight built
into the dyno shell. That's a bad idea, because proper alignment for the
dyno is very seldom proper alignment for the headlight. But I was poor
and that's what I found in the salvage store. And of course, the bulb
was a dim vacuum bulb, not even halogen.

It functioned well enough as a "be seen" light in the city. But if I
took the quieter roads home from work at night, it was dismal. That
route involved climbing then descending a steep wooded hill. I remember
riding my brakes hard all the way down to avoid overrunning the beam. No
fun at all.

By contrast, I _love_ modern LED headlights with StVZO optics.

--
- Frank Krygowski

On 3/19/2021 6:49 PM, Frank Krygowski wrote:
On 3/19/2021 6:44 PM, John B. wrote:
On Fri, 19 Mar 2021 12:19:18 -0400, Frank Krygowski
wrote:

On 3/18/2021 11:05 PM, Jeff Liebermann wrote:
On Thu, 18 Mar 2021 15:52:37 -0400, Frank Krygowski
wrote:

On 3/18/2021 3:26 PM, AMuzi wrote:
I remember advertisements for Bendix 2-speed Automatic
hubs, "No Pesky
Cables!"

Shimano achieves that goal differently:

https://bikerumor.com/2021/03/16/pat...fting-details/


When did maximum complexity become a bike design goal?

Would a dynamo powered shifting system be acceptable?
If not, trade in your dynamo powered headlight and go
back to kerosene
or carbide lanterns.

I wonder if I'm the only one here who has tried riding
with an old
kerosene headlamp?

I bought one at an antique shop and tested it on dark
neighborhood
streets. It convinced me that people's night vision must
have been much
better back in those days!

Which would have been likely anyway, I suppose. Before
Edison, the world
was a very dark place indeed, much darker than we're used
to. Night
vision wasn't hampered by glare from ubiquitous lights.
People were
accustomed to getting by with lighting that was very dim
by our standards.

When I was in Japan I rode a bike with incandescent lights
and a
bottle generator back and forth to work and found it no
problem what
so ever. Simply ride within the limits of the lights that
you have.
and I suggest that riding with a kerosene lamp cold be
accomplished
the same way.

My first dyno light was an oddball Soubitez with the
headlight built into the dyno shell. That's a bad idea,
because proper alignment for the dyno is very seldom proper
alignment for the headlight. But I was poor and that's what
I found in the salvage store. And of course, the bulb was a
dim vacuum bulb, not even halogen.

It functioned well enough as a "be seen" light in the city.
But if I took the quieter roads home from work at night, it
was dismal. That route involved climbing then descending a
steep wooded hill. I remember riding my brakes hard all the
way down to avoid overrunning the beam. No fun at all.

By contrast, I _love_ modern LED headlights with StVZO optics.


Glass incandescent 6v are indeed not all that bright. Enough
for me but situations taste and opinions vary.

Both the classic 1960s Soubitez aluminum CL-89 and the later
chromoplastic CA-120 have a beam aim adjustment. It's under
the bulb and lens. A nut fastens shaped washers (not unlike
V brake pad spacers) for height and lateral adjustment of
the bulb housing.

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