开云体育

Re: possible worm gear


Chris Albertson
 

开云体育

At least today the pedels all use the same thread. ? But so much else is totally custom. ?Like the tapered-head titanium cap screws. ? One newish innovation is that all the screws on my bike are marked with a “Min and Max torque” value. Something like “5 - 7 newton meters” by every screw. ? ?I think this happened when they went with carbon fiber.

I have NEVER heard of anyone usimng machine tools to work on a bicycle. ? It is just not done.



On Mar 25, 2024, at 3:04?PM, mike allen <animal@...> wrote:

Back when I was still into bikes & Campagnolo ruled everyone had to use different threads in their bottom brackets & pedals . I had/have a Set of TA cranks & chain wheels & the threads were different between? TA , to Stronglite , &? Campy crank sets . I was so pissed when my new to me Campy blacktop pedals wouldn't fit the cranks . It's actually probably good that I didn't have a mini lathe or any lathe & mill for that mater back then. I'm sure I would have ruined a lot of expensive parts by fixing them .

animal

On 3/25/24 2:05 PM, Chris Albertson wrote:
The thing about bicycle parts is that they use a lot of non-common threads and gear profiles and screws with custom head shapes, not to mention exotic metals and tempering. ? for example, you can look at a standard bottom bracket and find?34.92mm diameter threads. ?Not a hardware store size. ?You might measure and?think “35mm” and be wrong. ??

I don't know the specs on the gear you need but, there is a good chance is it a custom-size or profile.






On Mar 25, 2024, at 1:34?PM, davesmith1800 <davesmith1@...> wrote:

Yes a photo helps

Dave?


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