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Pneumatic shift can lube

  • wcoye
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17 Oct 2017 01:43 #33692 by wcoye
Replied by wcoye on topic Pneumatic shift can lube
A brand name for your synthetic lube?

Bill Coye
Westchester 2240A
Brag line: Winner of the
2014 Hillsborough Concurs Strother MacMinn award

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  • Terry Cockerell
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12 Oct 2017 06:31 #33669 by Terry Cockerell
Replied by Terry Cockerell on topic Pneumatic shift can lube
Forget quick gear changes. The main concern is protecting the gearbox an d saving it from damage.
When I had my Cord on the road I held the clutch pedal flat on the floor for two seconds each time I changed gears.
Having flow restrictors reduced the shock loading as the main cylinder is really too big for the job.
I found that I had to have the flow restrictors almost fully closed . It is a good modification to do.
I also fitted micro switches to first and reverse gears that let you know when the gears have been selected properly by small lights under the dash. That basically eliminated accidental gear crunching. It all worked very well.

T cockerell

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  • 1748 S
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11 Oct 2017 16:17 #33668 by 1748 S
Replied by 1748 S on topic Pneumatic shift can lube
Not really. It will slow down the speed of a gear change. Some changes can be quick and harsh.

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11 Oct 2017 16:15 #33667 by 1748 S
Replied by 1748 S on topic Pneumatic shift can lube
Terry my plan has been to install these vacuum modifiers in my car when I start driving it. Being adjustable is a great idea because we can adjust it to fit our trans.

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  • ilikescars
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11 Oct 2017 14:54 #33666 by ilikescars
Replied by ilikescars on topic Pneumatic shift can lube
Dumb question: Wouldn't flow restrictors cause a weakened shift?

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  • Terry Cockerell
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11 Oct 2017 10:02 #33665 by Terry Cockerell
Replied by Terry Cockerell on topic Pneumatic shift can lube
I too reused the original leather seals and worked leather conditioner into them. The leather conditioner I used is called Dubbin and is very greasy. I believe that the shift cylinder is too big consequently the gear are subjected to too much force.
Flow restrictors are required to be fitted to both ends of the cylinder . George Arakelian pioneered this modification.

T cockerell
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10 Oct 2017 20:20 #33664 by 1748 S
Replied by 1748 S on topic Pneumatic shift can lube
I used a syhthetic lube. My original leather cup seals were in great shape. I did purchase a set of neoprene seals. I just felt my leather was fine. I did post many pictures of this work restoring this vacuum.

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  • wcoye
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10 Oct 2017 01:19 #33661 by wcoye
Pneumatic shift can lube was created by wcoye
Hi! what are you all using to lubricate the piston in the shift can. The piston is hanging up and I'm going to have to clean it out and re-lube. The piston has a neoprene gasket.

Bill Coye
Westchester 2240A
Brag line: Winner of the
2014 Hillsborough Concurs Strother MacMinn award

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