[Spridgets] How it's made. Episode 498 Judson Rotor.
dlh2001 at comcast.net
Wed Dec 19 21:42:47 MST 2012
You can read about it here.
I actually scanned that brochure and sent it that website.
The article refers to Torlon 7130, but that has been superseded
by 4435. You can get it from Drake Plastics.
You need a 12"x4"x.187" sheet for a Sprite Judson. It's about $130.
It will most likely need to be thickness planned slightly to fit the slots.
So don't make a mistake cutting it!
The old adage, "Cut once measure twice" definitely applies here.
There is another rocket science material that I just read about in Machine
Apparently they have some sort of carbon graphite designed for sliding vane
applications. But I don't know how much it cost, where to get it, or even
know what its properties are. Nor have I heard of any case studies of its
BTW, These are the true "Rearden Metals" of this day and age.
From: spridgets-bounces at autox.team.net
[mailto:spridgets-bounces at autox.team.net] On Behalf Of Bob Kitterer
Sent: Wednesday, December 19, 2012 8:25 PM
Subject: Re: [Spridgets] How it's made. Episode 498 Judson Rotor.
What material are you going to use for the vanes?
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