On Thu Dec 5 05:32:57 2024 zen cycle wrote:
On 12/4/2024 6:51 PM, cyclintom wrote:
On Wed Dec 4 18:07:43 2024 Zen Cycle wrote:
On 12/4/2024 5:38 PM, Tom Kunich wrote:
On Wed, 04 Dec 2024 12:53:51 -0500, Zen Cycle wrote:
On 12/4/2024 12:47 PM, cyclintom wrote:
On Wed Dec 4 00:05:00 2024 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.
--
- Frank Krygowski
So this is something you consider "super complicated" is it? All
anyoine should have needed is to see the levers slidding in the slots >>>>> to grasped the method that was used to both make the tranmission
continuously variable and limit the upper and lower ratios. But I
suppose you needed a half hour showing gears to grasp the idea.
lol...sure tommy, but then you can't figure out out to attach a crank >>>> arm or adjust a headset without claiming the parts are defective.
I'm waiting for you to prove they aren't defective.
we aren't taking your word for it.
The torque value is
set not to crush the wave washer, which you don't know anything about,
I have Sram Red BB30s on two bikes.
and
setting the torque to that value crushes the wave washer flat. That means >>> that the non-drive side is out of tolerance.
More likely it means you're doing it wrong
Not that you would know
anything about tolerances.
I know you have none.
--
Add xx to reply
If you did your own work on your bikes you would know that the SRAM spacing is controlled by the different crank size bearings and that the wave washer only offers a preload.
"spacing is controlled by the different crank size bearings"?
I'd love to see you post a published spec that supports Sram BB30s have different crank bearing sizes
That is, the non-drive side bearing prevents the off-side crank arm from being over-tightened and pushing it solidly up against the wave washer.
Which has nothing to do with the size of the bearing.
So you just proved yet again that you don't work on your own bikes.
No, what you've just proven is why your crank arm fell off.
Keep the stupidity coming.
No need to with you around.
You have an awful lot of practice getting things wrong, Move down to the chart for GXP (SRAM) It plainly shows one side is 24 mm and the off-side is 22 mm.
https://wheelsmfg.com/crankset-tech
How can you be so stupid so often?
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