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From: don (Calgary) on 16 Jul 2010 15:05
On Fri, 16 Jul 2010 11:00:57 -0600, "Bob Myers"
<nospamplease(a)address.invalid> wrote:

>There's a lesson to be learned here with respect to mechanical
>things, especially those which may appear to be some sort of
>Big Mystery to those unfamiliar with their innards: the
>manufacturers of such things are ALWAYS ALWAYS ALWAYS
>going to make them as simple as possible consistent with delivering
>the intended function.

Clearly you have never worked on a Series III Jaguar. ;-)
From: Bob Myers on 16 Jul 2010 16:01
tomorrow(a)erols.com wrote:
> On Jul 16, 1:00 pm, "Bob Myers" <nospample...(a)address.invalid> wrote:
>
>> There's a lesson to be learned here with respect to mechanical
>> things, especially those which may appear to be some sort of
>> Big Mystery to those unfamiliar with their innards: the
>> manufacturers of such things are ALWAYS ALWAYS ALWAYS
>> going to make them as simple as possible consistent with delivering
>> the intended function.
>
> ... except when something more complicated provides a measurable
> marketing advantage or contributes to brand cachet, or both.
>
> See: desmodromic valve actuation, among other oddities.

That all falls under "delivering the intended function." Keeping the
people in the marketing department happy is (often unfortunately)
an objective of the engineering department.

Desmodromic valves actually DO serve a useful purpose, of course,
whether or not they're of any real advantage to 90%+ of the
people who buy them.

Bob M.


From: tomorrow on 16 Jul 2010 16:12
On Jul 16, 4:01 pm, "Bob Myers" <nospample...(a)address.invalid> wrote:
> tomor...(a)erols.com wrote:
> > On Jul 16, 1:00 pm, "Bob Myers" <nospample...(a)address.invalid> wrote:
>
> >> There's a lesson to be learned here with respect to mechanical
> >> things, especially those which may appear to be some sort of
> >> Big Mystery to those unfamiliar with their innards: the
> >> manufacturers of such things are ALWAYS ALWAYS ALWAYS
> >> going to make them as simple as possible consistent with delivering
> >> the intended function.
>
> > ... except when something more complicated provides a measurable
> > marketing advantage or contributes to brand cachet, or both.
>
> > See: desmodromic valve actuation, among other oddities.
>
> That all falls under "delivering the intended function."  Keeping the
> people in the marketing department happy is (often unfortunately)
> an objective of the engineering department.
>
> Desmodromic valves actually DO serve a useful purpose, of course,
> whether or not they're of any real advantage to 90%+ of the
> people who buy them.

Oh, I certainly know that. However, I question the marketing
advantage as well as any performance advantage of the desmo valvegear
in any of Ducati's current range except the superbikes.

I'd actually prefer a valvespring GT1000 to the desmo GT1000. I had a
valvespring 750GT for many years and the lack of desmo valvegear was
no handicap to me loving motorcycle!

Anyway, I was just nattering on....
From: Titanium Man on 18 Jul 2010 14:33

"The Older Gentleman" <totallydeadmailbox(a)yahoo.co.uk> wrote in message
news:1jlntim.1cd42b10p2pwmN%totallydeadmailbox(a)yahoo.co.uk...
> sean_q_ <nospam(a)no.spam> wrote:
>
>> Datesfat Chicks wrote:
>>
>> > Questions:
>>
>> I've recently been looking for used Triumph parts at various
>> bike wreckers, but they're few and far between -- made even
>> harder to find behind piles, boxes and bins full of Harley parts
>> and 3rd party Harley accessories and custom Harley parts...
>>
> Remember those little hooded creatures in the early Star Wars films? The
> things that went rooting in mountains of industrial junk?
>
> Jawas. That's you, that is.
>
>
> --
> BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
> Suzuki TS250ER GN250 Damn, back to six bikes!
> Try Googling before asking a damn silly question.
> chateau dot murray at idnet dot com

I have shelves full of perfectly good Harley parts. Removed when I built the
underpowered engine into a monster.

Thumper


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