Dynohub drag

On Sunday, October 19, 2014 12:02:06 AM UTC-7, Lou Holtman wrote:
jbeattie schreef op 19-10-2014 3:51:

On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:

On 10/18/2014 3:44 PM, Sir Ridesalot wrote:







Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.







True. But this Cyo also does a great job of illuminating the road at



the same time, something those flashlights cannot do. The real point



about the stop signs is that if the lumens can travel 1/4 mile to the



sign then bounce back all the way to my retinas, one can't reasonably



complain (as Scharf implies) that an opposite direction motorist won't



see my headlight.







What many people would like is a low cost light that'd be good fore *EXTREMELY*



slow riding, trails riding, single track riding as well as poor



condition paved



roads at night when there's no moon or stars.







Yep. They exist. Europe teems with them.







This is the exact problem many had with the old bottle type dynamos, there



wasn't enough steady on light at very slow speed or when stopped.







Try one with a modern LED headlight. Filament bulbs - even halogen ones



- are very sensitive to voltage, and drop lumen output precipitously



when voltage sags. LEDs are much less sensitive to voltage; they light



up very nicely at very low speeds. I say that from experience, having



four bikes here with old dynamos (bottle or roller style) driving modern



LED lights.







I know quite a few people who'd love to be able to get a decent light at



a relatively low price dynamo or battery powered. Unfortunately for them



they're not wheel builders or electrical engineers nor do they have their



own machine shop. Thus they have to buy over the counter stuff.







Well, I expect this stuff will get more common. It's standard equipment



in Germany, which (contrary to some folks) is not pancake flat nor lit



up like Las Vegas. Maybe North Americans will catch on. We'll see.



Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.



So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc



-- Jay Beattie.







Please don't spend money on an expensive light again if you are not sure

that its fits your needs. I try to run my Edelux II at very low speeds

this week and see if it is bright enough to see (imaginary) potholes. Do

you have potholes where you can disappear in?

Yes, depending on the route. My most common route lately involves a climb up a road with a broken up cement surface. 45°28'14.83" N 122°40'29.04" W And I have a quarter mile of trail/gravel road after that. Most of what I need to see on my other routes is typical road side crap (blow down, leaf piles) during fall/winter. I have options for single track, but I usually skip that during winter due to traction issues on road tires.

On my battery light, I just switch from low to high in these sections.

-- Jay Beattie.

On 10/18/2014 8:51 PM, jbeattie wrote:
On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:
On 10/18/2014 3:44 PM, Sir Ridesalot wrote:



Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.



True. But this Cyo also does a great job of illuminating the road at

the same time, something those flashlights cannot do. The real point

about the stop signs is that if the lumens can travel 1/4 mile to the

sign then bounce back all the way to my retinas, one can't reasonably

complain (as Scharf implies) that an opposite direction motorist won't

see my headlight.



What many people would like is a low cost light that'd be good fore *EXTREMELY*

slow riding, trails riding, single track riding as well as poor

condition paved

roads at night when there's no moon or stars.



Yep. They exist. Europe teems with them.



This is the exact problem many had with the old bottle type dynamos, there

wasn't enough steady on light at very slow speed or when stopped.



Try one with a modern LED headlight. Filament bulbs - even halogen ones

- are very sensitive to voltage, and drop lumen output precipitously

when voltage sags. LEDs are much less sensitive to voltage; they light

up very nicely at very low speeds. I say that from experience, having

four bikes here with old dynamos (bottle or roller style) driving modern

LED lights.



I know quite a few people who'd love to be able to get a decent light at

a relatively low price dynamo or battery powered. Unfortunately for them

they're not wheel builders or electrical engineers nor do they have their

own machine shop. Thus they have to buy over the counter stuff.



Well, I expect this stuff will get more common. It's standard equipment

in Germany, which (contrary to some folks) is not pancake flat nor lit

up like Las Vegas. Maybe North Americans will catch on. We'll see.

Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.

So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc

-- Jay Beattie.


Yep, I've driven out there at excessive speed. Still seems
to take forever to span it.

Not advising you to pay or not pay his ticket but one of our
favorite expressions here is that 'education is painful and
expensive'.

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

On Sunday, October 19, 2014 12:59:04 PM UTC-4, AMuzi wrote:
On 10/18/2014 8:51 PM, jbeattie wrote:

On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:

On 10/18/2014 3:44 PM, Sir Ridesalot wrote:







Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.







True. But this Cyo also does a great job of illuminating the road at



the same time, something those flashlights cannot do. The real point



about the stop signs is that if the lumens can travel 1/4 mile to the



sign then bounce back all the way to my retinas, one can't reasonably



complain (as Scharf implies) that an opposite direction motorist won't



see my headlight.







What many people would like is a low cost light that'd be good fore *EXTREMELY*



slow riding, trails riding, single track riding as well as poor



condition paved



roads at night when there's no moon or stars.







Yep. They exist. Europe teems with them.







This is the exact problem many had with the old bottle type dynamos, there



wasn't enough steady on light at very slow speed or when stopped.







Try one with a modern LED headlight. Filament bulbs - even halogen ones



- are very sensitive to voltage, and drop lumen output precipitously



when voltage sags. LEDs are much less sensitive to voltage; they light



up very nicely at very low speeds. I say that from experience, having



four bikes here with old dynamos (bottle or roller style) driving modern



LED lights.







I know quite a few people who'd love to be able to get a decent light at



a relatively low price dynamo or battery powered. Unfortunately for them



they're not wheel builders or electrical engineers nor do they have their



own machine shop. Thus they have to buy over the counter stuff.







Well, I expect this stuff will get more common. It's standard equipment



in Germany, which (contrary to some folks) is not pancake flat nor lit



up like Las Vegas. Maybe North Americans will catch on. We'll see.



Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.



So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc



-- Jay Beattie.





Yep, I've driven out there at excessive speed. Still seems

to take forever to span it.



Not advising you to pay or not pay his ticket but one of our

favorite expressions here is that 'education is painful and

expensive'.



--

Andrew Muzi

www.yellowjersey.org/

Open every day since 1 April, 1971

That expression can also apply to buying bicycle lights when you find out that don't fit your needs.

Cheers

On Sun, 19 Oct 2014 07:33:27 -0700 (PDT), jbeattie
wrote:

On Sunday, October 19, 2014 12:02:06 AM UTC-7, Lou Holtman wrote:
jbeattie schreef op 19-10-2014 3:51:

On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:

On 10/18/2014 3:44 PM, Sir Ridesalot wrote:







Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.







True. But this Cyo also does a great job of illuminating the road at



the same time, something those flashlights cannot do. The real point



about the stop signs is that if the lumens can travel 1/4 mile to the



sign then bounce back all the way to my retinas, one can't reasonably



complain (as Scharf implies) that an opposite direction motorist won't



see my headlight.







What many people would like is a low cost light that'd be good fore *EXTREMELY*



slow riding, trails riding, single track riding as well as poor



condition paved



roads at night when there's no moon or stars.







Yep. They exist. Europe teems with them.







This is the exact problem many had with the old bottle type dynamos, there



wasn't enough steady on light at very slow speed or when stopped.







Try one with a modern LED headlight. Filament bulbs - even halogen ones



- are very sensitive to voltage, and drop lumen output precipitously



when voltage sags. LEDs are much less sensitive to voltage; they light



up very nicely at very low speeds. I say that from experience, having



four bikes here with old dynamos (bottle or roller style) driving modern



LED lights.







I know quite a few people who'd love to be able to get a decent light at



a relatively low price dynamo or battery powered. Unfortunately for them



they're not wheel builders or electrical engineers nor do they have their



own machine shop. Thus they have to buy over the counter stuff.







Well, I expect this stuff will get more common. It's standard equipment



in Germany, which (contrary to some folks) is not pancake flat nor lit



up like Las Vegas. Maybe North Americans will catch on. We'll see.



Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.



So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc



-- Jay Beattie.







Please don't spend money on an expensive light again if you are not sure

that its fits your needs. I try to run my Edelux II at very low speeds

this week and see if it is bright enough to see (imaginary) potholes. Do

you have potholes where you can disappear in?

Yes, depending on the route. My most common route lately involves a climb up a road with a broken up cement surface. 45°28'14.83" N 122°40'29.04" W And I have a quarter mile of trail/gravel road after that. Most of what I need to see on my other routes is typical road side crap (blow down, leaf piles) during fall/winter. I have options for single track, but I usually skip that during winter due to traction issues on road tires.

On my battery light, I just switch from low to high in these sections.

-- Jay Beattie.
What's wrong with a battery light with smaller rechargeable
batteries, recharged in the run with a dyno? You get standlight, you
get bright light at low speed, and you don;t need to change batteries
and worry about battery level on long or infreguent night rides.

On Sun, 19 Oct 2014 10:21:34 -0700 (PDT), Sir Ridesalot
wrote:

On Sunday, October 19, 2014 12:59:04 PM UTC-4, AMuzi wrote:
On 10/18/2014 8:51 PM, jbeattie wrote:

On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:

On 10/18/2014 3:44 PM, Sir Ridesalot wrote:







Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.







True. But this Cyo also does a great job of illuminating the road at



the same time, something those flashlights cannot do. The real point



about the stop signs is that if the lumens can travel 1/4 mile to the



sign then bounce back all the way to my retinas, one can't reasonably



complain (as Scharf implies) that an opposite direction motorist won't



see my headlight.







What many people would like is a low cost light that'd be good fore *EXTREMELY*



slow riding, trails riding, single track riding as well as poor



condition paved



roads at night when there's no moon or stars.







Yep. They exist. Europe teems with them.







This is the exact problem many had with the old bottle type dynamos, there



wasn't enough steady on light at very slow speed or when stopped.







Try one with a modern LED headlight. Filament bulbs - even halogen ones



- are very sensitive to voltage, and drop lumen output precipitously



when voltage sags. LEDs are much less sensitive to voltage; they light



up very nicely at very low speeds. I say that from experience, having



four bikes here with old dynamos (bottle or roller style) driving modern



LED lights.







I know quite a few people who'd love to be able to get a decent light at



a relatively low price dynamo or battery powered. Unfortunately for them



they're not wheel builders or electrical engineers nor do they have their



own machine shop. Thus they have to buy over the counter stuff.







Well, I expect this stuff will get more common. It's standard equipment



in Germany, which (contrary to some folks) is not pancake flat nor lit



up like Las Vegas. Maybe North Americans will catch on. We'll see.



Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.



So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc



-- Jay Beattie.





Yep, I've driven out there at excessive speed. Still seems

to take forever to span it.



Not advising you to pay or not pay his ticket but one of our

favorite expressions here is that 'education is painful and

expensive'.



--

Andrew Muzi

www.yellowjersey.org/

Open every day since 1 April, 1971

That expression can also apply to buying bicycle lights when you find out that don't fit your needs.

Cheers
Or bicycle ANYTHING that meets that criteria.

On 10/19/2014 12:33 PM, wrote:

What's wrong with a battery light with smaller rechargeable
batteries, recharged in the run with a dyno? You get standlight, you
get bright light at low speed, and you don;t need to change batteries
and worry about battery level on long or infreguent night rides.

The consensus is that that would be the best option but there are no
such lights available that I could find (or that anyone here could find
for that matter). If you know of some then please share that information.

The best option is to find a light where the batteries inside can be
recharged without removing them, and then construct a charger that can
be powered by the dynamo.

I'm working on this now. I have the light, I have the Schottky bridge
rectifiers, I will pick up the zener diodes tomorrow (the charger module
must not be driven with more than 8 volts), I have the connectors.
Waiting for the Li-Ion charging modules.

There are also some lights with Micro-USB inputs for charging. These
would be a bit easier to work with since the Li-Ion charger is built
into the light. You just need a bridge rectifier and a DC-DC buck
converter. But it's not clear if these lights can be operated while
charging. The lights I have let you power the light from the DC charge
input, even with no battery installed.

On Sunday, October 19, 2014 10:21:34 AM UTC-7, Sir Ridesalot wrote:
On Sunday, October 19, 2014 12:59:04 PM UTC-4, AMuzi wrote:

On 10/18/2014 8:51 PM, jbeattie wrote:



On Saturday, October 18, 2014 3:51:25 PM UTC-7, Frank Krygowski wrote:



On 10/18/2014 3:44 PM, Sir Ridesalot wrote:















Crikey, a lot of decent yet very cheap flashlights with narrow beams will light up reflective signs at 1/4 mile.















True. But this Cyo also does a great job of illuminating the road at







the same time, something those flashlights cannot do. The real point







about the stop signs is that if the lumens can travel 1/4 mile to the







sign then bounce back all the way to my retinas, one can't reasonably







complain (as Scharf implies) that an opposite direction motorist won't







see my headlight.















What many people would like is a low cost light that'd be good fore *EXTREMELY*







slow riding, trails riding, single track riding as well as poor







condition paved







roads at night when there's no moon or stars.















Yep. They exist. Europe teems with them.















This is the exact problem many had with the old bottle type dynamos, there







wasn't enough steady on light at very slow speed or when stopped.















Try one with a modern LED headlight. Filament bulbs - even halogen ones







- are very sensitive to voltage, and drop lumen output precipitously







when voltage sags. LEDs are much less sensitive to voltage; they light







up very nicely at very low speeds. I say that from experience, having







four bikes here with old dynamos (bottle or roller style) driving modern







LED lights.















I know quite a few people who'd love to be able to get a decent light at







a relatively low price dynamo or battery powered. Unfortunately for them







they're not wheel builders or electrical engineers nor do they have their







own machine shop. Thus they have to buy over the counter stuff.















Well, I expect this stuff will get more common. It's standard equipment







in Germany, which (contrary to some folks) is not pancake flat nor lit







up like Las Vegas. Maybe North Americans will catch on. We'll see.







Dyno lights are OE on urban bikes in the 30lb range, e.g. http://store.kalkhoffusa.com/Connect-p/ka09conn.htm So, although Germany is not pancake flat, the bikes sold with dyno lights are geared towards rather tame urban riding. The Netherland's Gazelle is another example. Dyno lights as OE will catch on only to the extent that Gazelle/Kalkhoff-type bikes catch on -- which means that utility cycling will have to catch on first. That hasn't happened in the US for a number of reasons, including legitimate ones like long commute distances and difficult terrain -- as well as illegitimate ones like laziness and the love of cars, etc.







So, I went over to the premier Bohemian utility bike store in Portland, Clever Cycles, and looked at the Edelux II sitting in the show case. Nobody there knew a thing about it, and the woman helping me didn't strike me as a dyno user. So, there's not a lot of hustle to sell these things. The good news is that they have a number of the B&M lights, and I can use my BTA discount. Joe Bike, Universal and some others stock dyno lights, too. I'll ponder whether I want to make a change. My finances became more limited after finding out that my broke son got a huge speeding ticket driving back to Salt Lake City from PDX (fall break visit). Crap. I had no idea the fines were so punitive. What's the big deal. There's nothing out in Eastern Oregon except a few cows . . . and apparently a cop. http://tinyurl.com/p57ltnc







-- Jay Beattie.











Yep, I've driven out there at excessive speed. Still seems



to take forever to span it.







Not advising you to pay or not pay his ticket but one of our



favorite expressions here is that 'education is painful and



expensive'.







--



Andrew Muzi



www.yellowjersey.org/



Open every day since 1 April, 1971



That expression can also apply to buying bicycle lights when you find out that don't fit your needs.


Groan. You're supposed to be praising me for my open-mindedness and willingness to experiment. But then again, you are just one of those people who has MORE LUMENS THAN YOU NEED and who is rude (I say rude!) to motorists. Now that I have a dyno, I can pontificate! That's got to be worth something. Just wait until I get a recumbent.

I was coming home from a ride today, bonked out of my mind (went too far, ate too little) and started hallucinating about dyno lights -- and how if I didn't like the next one, then it was because I made a bad purchase and should have gotten brand-x or z or whatever. It is odd that basic functionality can be so elusive. Imagine buying a car that stopped running at lights and then getting scolded for buying he wrong car.

I know a lot of people who have battery lights and none agonize over beam shape versus stand light versus low speed performance. It's like "I have a zillion lumen light, and its the size of a peanut!" If it's too dim, turn it up. If it's too bright, turn it down -- make it flash if you want. You have to charge it though, so you cant just drop your Gazelle against the wall when you get home from work. You have to unstrap that light from the bars and stick it on a USB charger or something. Imagine the effort of plugging something in to a USB charger. I am exhausted owning a cellphone. But, goddamnit, I'm going to stick with the dyno thing. I am going to bail the Titanic with my teacup, Frank.

-- Jay Beattie.

On 20/10/14 05:40, Phil W Lee wrote:

The lower limit on the speed at which a cycle dynamo gives useful
light could of course be solved completely by driving it from the
pedals, instead of the wheel. That's how it's done on motor vehicles.


Coasting downhill would be a problem.

Think I'll stick to a hub dynamo.

If people really need more light while riding at walking pace up hill at
night, I'd be more inclined to suggest a battery back up, rechargeable
by the dynamo of course.

--
JS

On 10/19/2014 3:11 PM, jbeattie wrote:

snip

Groan. You're supposed to be praising me for my open-mindedness and willingness to experiment.

I will praise you when you learn to snip.

On 10/19/2014 3:45 PM, James wrote:
On 20/10/14 05:40, Phil W Lee wrote:

The lower limit on the speed at which a cycle dynamo gives useful
light could of course be solved completely by driving it from the
pedals, instead of the wheel. That's how it's done on motor vehicles.


Coasting downhill would be a problem.

LOL. Yeah, an engine drives the alternator continuously, at least on
most petrol powered cars but a bicyclist doesn't pedal all the time.

The Prius is the most popular vehicle in California and the alternator
isn't going when the vehicle is stopped. Even some non-hybrid vehicles
turn the engine off when stopped.

If people really need more light while riding at walking pace up hill at
night, I'd be more inclined to suggest a battery back up, rechargeable
by the dynamo of course.

That would be ideal but it's a Catch-22. Few riders outside of the
Netherlands or Germany will switch to dynamo lighting because of the
drawbacks and the drawbacks will not be addressed because there does not
seem to be a market for dynamos.

I think that a battery powered light manufacturer that was willing to
add the minor extra cost for a dynamo input to a battery powered light
would have a real value advantage. Doing a version of a light like this
needn't cost much since they could depopulate the PCB for the battery
only version and only add the extra components for the hybrid version,
along with a wire coming out to go down to the dynamo.