Re: RE: Re: Only 14 gear ratios? Primitive!

On 12/4/2024 12:54 PM, cyclintom wrote:

On Wed Dec 4 10:33:20 2024 AMuzi  wrote:

On 12/4/2024 10:22 AM, Frank Krygowski wrote:

On 12/4/2024 11:16 AM, AMuzi wrote:

On 12/4/2024 9:39 AM, Zen Cycle wrote:

On 12/4/2024 9:54 AM, AMuzi wrote:

On 12/3/2024 11:05 PM, Frank Krygowski wrote:

Bike transmissions: Derailleurs are easy to understand.
Internal gear hubs are more complicated. (When I was
teaching, I had our machinist do a cutaway of a
Sturmey- Archer AW hub and mount it on a display stand
near an explanatory poster, so interested students
could see what made it work.)
>
Rohloff 14 speed gear hubs are an order of magnitude
more complicated than AWs. But this new gizmo makes a
Rohloff look like child's play. It's a true
continuously variable transmission, with an infinite
number of gear ratios, that is completely gear-based.
No slipping surfaces, and supposedly minimal friction
losses.
>
Here's the link to the half hour explanation video:
https://www.youtube.com/watch?v=mWJHI7UHuys
You may want to start at about 14:30 before returning
to the beginning to digest the super-complicated
explanation of it's operation.
>
No info in the video about prototype weight,
efficiency, etc.
>

>
Brilliant and clever! Thank you.
>
I can only see complexity, cost to fabricate and weight
as downsides, none of which would be deal breakers for
some applications. Motor power for example.

>
It actually seems to me to be significantly less
complicated than a standard automatic transmission
>

>
Sort of the inverse of fixed, which are dirt cheap,
light and reliable at the cost of zero gear variance.
>

>
Nothing a good pair of legs can't handle :)
>

>
I have to admit I don't know much about modern electronic
control slushboxes (except to avoid them) but the geared
CVT is much more complex than what I drive* and infinitely
more complex than what I most often ride (fixed)
>
>
* https://corvair.com/user-cgi/catalog.cgi?show_page=130

>
Firefox is very wary of corvair.com!
>
"Error code: SSL_ERROR_BAD_CERT_DOMAIN"
>
>

>
Yeah I saw that. Old page format, never updated to modern
protocols.
>
-- Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971

    To Franhk, he only uses old technology but then he shows us this complicated POS that no one is going to build.

Wow, you're a cranky little bitch today. What's the matter, no booze and the wife spent your SS check already?
--
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