J
jim beam
Guest
Benjamin Lewis wrote:
> jim beam wrote:
>
>
>>Benjamin Lewis wrote:
>>
>>>jim beam wrote:
>>>
>>>
>>>>Tim McNamara wrote:
>>>><snip drivel>
>>>>
>>>>>I see. And that situation is insurmountable? The designers are
>>>>>incompetent to deal with that? Good heavens. Might as well go back
>>>>>to V-brakes, dude. Oh wait, those are mounted on the front too- no
>>>>>doubt there are millions of them being ripped off of forks even as we
>>>>>speak.
>>>>
>>>>oh dear. sorry tim, zero points. do the math on the force at the
>>>>brake bosses compared to a disk tab. look at the comparative size
>>>>differences too and use that to estimate stress.
>>>
>>>How can we "look at the size differences" on a non-existent design?
>>
>>eh? disk tabs and brake bosses exist. do we have a communication
>>problem?
>
>
> Disk tabs on front mounted calipers do not exist. If they did, an
> intelligent designer would make them larger.
that's only considering the tabs - the calipers have the same problems
as well.
>
>
>>>That stress is greater on rear mounted disk brake tabs than on
>>>cantilever bosses is true, but irrelevant.
>>
>>it's /highly/ relevant in fatigue!
>
>
> The stress on rear-mounted disk tabs is irrelevant in a discussion of
> front-mounted disk tabs.
>
not when front mounted calipers are subject to unfavorable fatigue
loading...
> jim beam wrote:
>
>
>>Benjamin Lewis wrote:
>>
>>>jim beam wrote:
>>>
>>>
>>>>Tim McNamara wrote:
>>>><snip drivel>
>>>>
>>>>>I see. And that situation is insurmountable? The designers are
>>>>>incompetent to deal with that? Good heavens. Might as well go back
>>>>>to V-brakes, dude. Oh wait, those are mounted on the front too- no
>>>>>doubt there are millions of them being ripped off of forks even as we
>>>>>speak.
>>>>
>>>>oh dear. sorry tim, zero points. do the math on the force at the
>>>>brake bosses compared to a disk tab. look at the comparative size
>>>>differences too and use that to estimate stress.
>>>
>>>How can we "look at the size differences" on a non-existent design?
>>
>>eh? disk tabs and brake bosses exist. do we have a communication
>>problem?
>
>
> Disk tabs on front mounted calipers do not exist. If they did, an
> intelligent designer would make them larger.
that's only considering the tabs - the calipers have the same problems
as well.
>
>
>>>That stress is greater on rear mounted disk brake tabs than on
>>>cantilever bosses is true, but irrelevant.
>>
>>it's /highly/ relevant in fatigue!
>
>
> The stress on rear-mounted disk tabs is irrelevant in a discussion of
> front-mounted disk tabs.
>
not when front mounted calipers are subject to unfavorable fatigue
loading...