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From: zen cycle <funkmasterxx@hotmail.com>
Newsgroups: rec.bicycles.tech
Subject: Re: People Without Meaningful Lives Seek Power Over Others
Date: Wed, 22 Jan 2025 06:19:24 -0500
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On 1/20/2025 9:09 PM, Frank Krygowski wrote:
> On 1/20/2025 7:30 PM, cyclintom wrote:
>> On Mon Jan 20 13:17:00 2025 Frank Krygowski  wrote:
>>>
>>> There's a little history on the "Talk" page regarding desmodromic
>>> valves. Here's that "Talk" page:
>>> https://en.wikipedia.org/wiki/ 
>>> Talk:Desmodromic_valve#Disputed_section:_Disadvantages
>>>
>>> I don't see enough to make a confident judgment.
>>
>> Jobst knew an awful lot about desmodromic valves which I suppose he 
>> got acquainted with at Porche trying to eliminate valve float. If you 
>> got him talking on the subject you couldn't shut him off. He believed 
>> they were the cure for everything,
> 
> I think you have that backwards. I suppose I could be wrong. Andrew can 
> probably clarify.
> 

Considering he wrote

"Desmodromic valve motion is an anachronism that with diligence can be 
made to work but at significant cost and design effort. "

"As analytic methods came into use, valve adjustment, hydraulic tappets, 
push rods, rocker arms and valve float became largely a thing of the 
past, making desmodromic valve drive a cumbersome engineering relic."

and

"sometimes investment in an idea causes mental blindeness."

I'll submit that, as usual, tom is wrong.