Vacuum Variable Clamps

[WA1GFZ]

I was working on the rig today and almost dropped a vacuum variable when it slid out of the flange clamp. I thought it was tight. Anyway, does anyone know how tight (inch pounds) to set the 10-32 clamp screw so it holds the cap but doesn't break the seal. I have never seen that spec anywhere.  I have a 2 inch clamp on the 500 pf plate tune and a 3 inch clamp on the load cap.

[w1vtp]

YES! Please!  I have essentially the same cap.  Specs anyone?

Al

[WA1GFZ]

Al,
I have an email in to Jennings and will post the response when and if it comes.
I had both caps bolted into a plate and was trying to measure the right angle drive height. It fell right into my lap and would have hit the floor if the right angle drive wasn't attached. I bet this is the reason many new caps have the flange soldered to the cap or they are part of the cap.

[k3zrf]

I have used this source from time to time

http://www.mgs4u.com/Jennings-flanges.htm

[WA1GFZ]

No Data there Dave.

[k3zrf]

Hmmmmmm, no drawings?

http://www.mgs4u.com

Start from there

[WA1GFZ]

Dave,
I been there but no data on how tight to make the clamp screw.

[w1vtp]

At least it's a start

http://www.mgs4u.com/Jennings-flanges.htm

I'll check with some of my friends

Al

[Rob K2CU]

here's a listing for the CSVF-500 that may apply to your case:

http://www.jenningstech.com/technotes/csvfflng.shtml

6.0 to 6.5 In-Oz for single screw flange, 3.5 to 4.0 In-Oz for dual screw type.

[WA1GFZ]

TNX Rob, That is the cap and I assume the same number for the FM3 on the loading cap