Camshaft design

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CamKing
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Re: Camshaft design

Post by CamKing » Wed Dec 20, 2017 11:40 am

hoffman900 wrote:
Wed Dec 20, 2017 4:16 am
panic wrote:
Tue Dec 19, 2017 8:39 pm
That's backwards from the way I do it.
Ooppss - my bad, those numbers not given in priority order, of course the engine's needs are paramount, thanks for clarifying.

If something new comes along to replace oil as we know it (or a non-friction surface treatment) so we can use bigger springs, the dynamic part will become really interesting...
The pneumatic buckets like have been used in Formula One for almost two decades now would be a giant leap.
A guy came by my PRI booth over 10 years ago. He designed a pneumatic system that would replace an 1.55" valve spring, on the average racing small block. I don't know whatever happened to that system. My first thought was, that's great, and I'd love to use it, but I would bet that every sanctioning body would make it illegal, as soon as they saw it.
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Krooser
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Re: Camshaft design

Post by Krooser » Thu Dec 21, 2017 2:32 pm

All this stuff is way above my pay grade and kudos to those of you with the brains to help those of us without the knowledge to understand this subject.

I might have been ok but I had to quit school in 6th grade because the teacher didn't want me and my Dad in the same class...
Last place in the B-main is better than anyplace in the grandstands...

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Re: Camshaft design

Post by Krooser » Thu Dec 21, 2017 2:32 pm

All this stuff is way above my pay grade and kudos to those of you with the brains to help those of us without the knowledge to understand this subject.

I might have been ok but I had to quit school in 6th grade because the teacher didn't want me and my Dad in the same class...
Last place in the B-main is better than anyplace in the grandstands...

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Post by dwilliams » Sun Dec 24, 2017 2:33 am

CamKing wrote:
Wed Dec 20, 2017 11:40 am
A guy came by my PRI booth over 10 years ago. He designed a pneumatic system that would replace an 1.55" valve spring, on the average racing small block. I don't know whatever happened to that system.
Back in the late 1970s there was a company selling pneumatic conversion kits for Ford FEs and some others. They also sold aluminum and magnesium FE blocks. PRD? PME?

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Re:

Post by Dan Timberlake » Sun Dec 24, 2017 8:54 am

dwilliams wrote:
Sun Dec 24, 2017 2:33 am

Back in the late 1970s there was a company selling pneumatic conversion kits for Ford FEs and some others. They also sold aluminum and magnesium FE blocks. PRD? PME?
The pneumatic valve spring, and the vintage, sounds like the outfit whose pretty extensive and picture laden catalog had the owner performing every task in every picture.

I remember thinking when Renault came out with what was called pneumatic valve "springs" on their F1 engines in the 80s that the FORD guy (no longer heard of) was maybe on to something, and wondering if Renault had maybe even bought the technology (unlikely, but ....).

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Re: Camshaft design

Post by DracerX » Mon Dec 25, 2017 7:24 pm

That would be Pro Stock Paul. He had a company called Pro Stock Engineering. I remember Ford mags from the 80's that had his ad on the back covers and reading about his air springs.

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Re: Camshaft design

Post by hoffman900 » Tue Dec 26, 2017 9:45 am

Going back to cam design, I always think of the old watchmakers and their automatons:
https://www.youtube.com/watch?v=bY_wfKVjuJM
-Bob

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Re: Camshaft design

Post by Keith Morganstein » Tue Dec 26, 2017 5:52 pm

hoffman900 wrote:
Tue Dec 26, 2017 9:45 am
Going back to cam design, I always think of the old watchmakers and their automatons:
https://www.youtube.com/watch?v=bY_wfKVjuJM
The "writer" is an incredible piece of work!
Automotive Machining, cylinder head rebuilding, engine building. Can't seem to quit #-o

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Re: Camshaft design

Post by Keith Morganstein » Tue Dec 26, 2017 5:54 pm

An article by Racer Brown:

http://www.datsport.com/racer-brown.html
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Re: Camshaft design

Post by Erland Cox » Sun Dec 31, 2017 3:55 pm

Can this page or what was on it be found somewhere: http://www.harveycrane.com/

Erland

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Re: Camshaft design

Post by Keith Morganstein » Sun Dec 31, 2017 4:20 pm

Erland Cox wrote:
Sun Dec 31, 2017 3:55 pm
Can this page or what was on it be found somewhere: http://www.harveycrane.com/

Erland
At the wayback machine http://archive.org/search.php
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Re: Camshaft design

Post by sanfordandson » Sun Dec 31, 2017 6:03 pm

I still think piezoelectric will one day work for valvetrains. Imagine unlimited "curves" and valve lifts at any rpm merely by programming...

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Re: Camshaft design

Post by SchmidtMotorWorks » Mon Jan 01, 2018 1:11 am

Erland Cox wrote:
Sun Dec 31, 2017 3:55 pm
Can this page or what was on it be found somewhere: http://www.harveycrane.com/

Erland
I probably have the images from it somewhere on a hard drive in storage.
Is there something that you are particularly interested in?
http://www.schmidtmotorworks.com Aerospace Machine Work: Prototypes, Tooling, Molds.

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Re: Camshaft design

Post by Keith Morganstein » Mon Jan 01, 2018 3:42 am

Keith Morganstein wrote:
Sun Dec 31, 2017 4:20 pm
Erland Cox wrote:
Sun Dec 31, 2017 3:55 pm
Can this page or what was on it be found somewhere: http://www.harveycrane.com/

Erland
At the wayback machine http://archive.org/search.php
There are 137 captures, here is one

http://web.archive.org/web/200806191440 ... ne.com:80/
Automotive Machining, cylinder head rebuilding, engine building. Can't seem to quit #-o

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Re: Camshaft design

Post by hoffman900 » Mon Jan 01, 2018 2:37 pm

-delete- double post
Last edited by hoffman900 on Mon Jan 01, 2018 2:41 pm, edited 1 time in total.
-Bob

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