On 04/08/2023 21:22, Pipl wrote:
> On Thu, 3 Aug 2023 21:06:44 -0000 (UTC), Mark Olson
> <olsonm@tiny.invalid> wrote:
>
>> One I don't remember, but a bus this time:
>>
>> https://www.ebay.com/itm/304988967753
>
> I'm pretty sure flywheel buses were a thing somewhere on the
> Continent.

Williams F1 developed one.
https://www.autocar.co.uk/car-news/industry/williams-hybrid-tech-power-london-buses

Stephen Packer wrote:
> I've never been a member. Always saw them as cranks.
> And now... part of the climate change denial action 'team'.
> https://www.desmog.com/motorcycle-action-group/#:~:text=MAG%20opposes%20emissions%20charges%20on,Low%20Emission%20Zone%20(ULEZ).
> Also... Steve Baker's a member FFS.
> Rather disappointed by Lembit Opik, but maybe I should just accept that a lot of the LibDems are libertarian cranks[1]. Then again he's been expelled from the LibDems.
> Glad I never joined (MAG, I did join the LibDems, briefly)

I was a member back in the late 80s, when 'leg protectors' and the 100PS
limit were threatened on the basis of faked (or, charitably, 'faulty')
evidence.

So I read a few of Neil Liversidge's (MAG chairman) columns in Back
Street Heroes magazine (via Readly); Mostly they contained rants about
'woke' culture and 'minorities' ruining everything - while failing to
define either, and without the self awareness to admit that motorcycle
riders are a minority ourselves.

I wouldn't go within barge-pole touching distance of them.

On 09/08/2023 08:20, Sqirrel99 wrote:
> Stephen Packer wrote:
>> I've never been a member.  Always saw them as cranks.
>> And now... part of the climate change denial action 'team'.
>> https://www.desmog.com/motorcycle-action-group/#:~:text=MAG%20opposes%20emissions%20charges%20on,Low%20Emission%20Zone%20(ULEZ).
>>
>> Also... Steve Baker's a member FFS.
>> Rather disappointed by Lembit Opik, but maybe I should just accept
>> that a lot of the LibDems are libertarian cranks[1].  Then again he's
>> been expelled from the LibDems.
>> Glad I never joined (MAG, I did join the LibDems, briefly)
>
> I was a member back in the late 80s, when 'leg protectors' and the 100PS
> limit were threatened on the basis of faked (or, charitably, 'faulty')
> evidence.
>
> So I read a few of Neil Liversidge's (MAG chairman) columns in Back
> Street Heroes magazine (via Readly); Mostly they contained rants about
> 'woke' culture and 'minorities' ruining everything - while failing to
> define either, and without the self awareness to admit that motorcycle
> riders are a minority ourselves.
>
> I wouldn't go within barge-pole touching distance of them.
>
Nor I - not even with *your* bargepole.

--
Rusty Hinge
To err is human. To really foul things up requires a computer and the BOFH.

Mike Fleming <mike@tauzero.co.uk> wrote:
> On 04/08/2023 21:22, Pipl wrote:
>> On Thu, 3 Aug 2023 21:06:44 -0000 (UTC), Mark Olson
>> <olsonm@tiny.invalid> wrote:
>>
>>> One I don't remember, but a bus this time:
>>>
>>> https://www.ebay.com/itm/304988967753
>>
>> I'm pretty sure flywheel buses were a thing somewhere on the
>> Continent.
>
> Williams F1 developed one.
> https://www.autocar.co.uk/car-news/industry/williams-hybrid-tech-power-london-buses

Riding on the train today, I was wondering if it used regenerative
braking. It appears the chances are good that it did.

https://nachhaltigkeit.deutschebahn.com/en/measures/Brake-energy-recovery

--
FJR1300A, GL1000, KLR650A6F, EX250J9A, DR200SE, Vespa Ciao

On Thu, 3 Aug 2023 05:16:21 -0700 (PDT), Hog <york996@gmail.com>
wrote:

>But I don't think ULEZ is really about NOx...

It is about polution. Significant numbers of people die early in
London each year because of poor air quality
--
Champ
neal at champ dot org dot uk

I don't know, but I been told
You never slow down, you never grow old

On 09/08/2023 13:28, Champ wrote:
> On Thu, 3 Aug 2023 05:16:21 -0700 (PDT), Hog <york996@gmail.com>
> wrote:
>
>> But I don't think ULEZ is really about NOx...
>
> It is about polution. Significant numbers of people die early in
> London each year because of poor air quality

It is now, that was figured out in 1956.

Once most cars are electric though, the infrastructure will be handy.
--
Moto Morini 2C/375
Gilera 175 Sport, Husqvarna 401 Svartpilen
Honda CB250RS (Not Waynetta!)
"Do not adjust your mind, there is a fault in the reality"

On 05/08/2023 19:02, Pipl wrote:
> On Fri, 4 Aug 2023 22:17:18 -0000 (UTC), Mark Olson
> <olsonm@tiny.invalid> wrote:
>
>> I just plugged a few numbers into this calculator:
>>
>> https://www.omnicalculator.com/physics/flywheel-energy-storage
>>
>> and it seems that in order to have anything close to the energy stored
>> in a typical home battery system, a flywheel's going to have to be pretty
>> big/heavy or spin pretty fast or both.
>
> For knetic energy, light, high tensile strength and fast is most
> efficient, if not the cheapest. They usually have to run in a vacuum
> with magnetic bearings - and be nonconductive, to minimise eddy
> currents from stray magnetic fields.

Industrial rotary UPS is a thing. I argued for them to protect LINAC
bunkers as conventional systems create a powerout for several seconds,
breaking any radiotherapy session in progress. An event/dose that is
difficult to quantify to the point of failure and to replan,
particularly when high dose rate Hyperfractionation was deployed.
www.piller.com/en-GB/documents/2143/are-all-rotary-ups-the-same-en.pdf

But the NHS puts money before patients. In 10 years >two treatment
sessions were disrupted. I didn't think that was acceptable when a
prevention strategy was available. Other opinions are available.

Dropping the HT power to a £1.8M treatment system isn't efficatious
either (battery UPS protects the file systems)

Then again I also suggested the NHS deploy WiFi and cellphone coverage
through the hospital, because it would inevitably become critical.
It was a really neat system
https://docs.johnsoncontrols.com/bas/api/khub/documents/tQnkxggO6WRzd_5sMuRUFw/content

Going back to provision a 62,000sq/m Oncology centre 6 years later cost
A_Lot more.

On 03/08/2023 21:28, Pipl wrote:
> On Thu, 3 Aug 2023 05:42:11 -0700 (PDT), Hog <york996@gmail.com>
> wrote:
>
>> Do you know about Telma electromagnetic (eddy current) brakes? as deployed on Swiss buses since (at least) 1970. I was fascinated to find out about them during a first visit.
>
> Ooh, never heard of them.
>
> <googles>
>
> Oh, they save on pads, but other than that, they just dump energy into
> the environment like mechanical brakes. I guess less likely to lock
> the wheels in slippery conditions though.

The clue is in Switzerland.
EM brakes allowed the buses to deploy a steady braking force going down
long steep mountain roads without overheating the friction brakes or
loading the gearbox.