Sujet : Re: RE: Re: RE: Re: Only 14 gear ratios? Primitive!
De : funkmaster (at) *nospam* hotmail.com (Zen Cycle)
Groupes : rec.bicycles.techDate : 04. Dec 2024, 19:39:39
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <viq7lb$vree$7@dont-email.me>
References : 1 2 3 4 5 6 7 8 9
User-Agent : Mozilla Thunderbird
On 12/4/2024 1:13 PM, cyclintom wrote:
On Wed Dec 4 13:01:05 2024 Zen Cycle wrote:
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?
>
-- Add xx to reply
I absolutely love to see you crying about my wealth bvecause you have none.
And you still haven't explained how you went from being broke and living on social security in 2013 to reaping a $12000 monthly income off your investments with no other source of income.
tears of laughter tommy....
-- Add xx to reply