<< Previous Topic | Next Topic >>Return to Start  

Who made the 101 pump cups for Crosman?

May 30 2017 at 11:26 AM
James V.  (Login kimo57)
Group #188948

 
Mr Flectcer,
Would you have any information as to who made the 101 original pump cups for Crosman? Crosman is no help!!!
Your stock should not be made of only walnut.

 
 Respond to this message   
AuthorReply
DT Fletcher
(Login DTFletcher)
Group #188948

Re: Who made the 101 pump cups for Crosman?

May 30 2017, 12:47 PM 

Wish I knew. I had no luck sourcing this part.

I know Ron Sauls went after this but don't know if he ever had any success.

It's been years since I've looked at this so it might be worthwhile to check in with the various airgun shops. Maybe somebody has made progress.




 
 Respond to this message   
Anthony R
(Login fivestar45)
Group #188948

Might want to

May 31 2017, 10:47 AM 

check with Rick @ Precision Pellet. I know he has been having a lot of the old parts re-pro'd.

 
 Respond to this message   
James V.
(Login kimo57)
Group #188948

Talk to Rick at least once or twice a week.

May 31 2017, 11:17 AM 

I got a bunch of Crosman 107's & 108's and each one has different chrony readings.
Thinking pump tubes might have to be honed out with steel wool? (like honing the cylinders on an engine when installing new piston rings)
Your stock should not be made of only walnut.

 
 Respond to this message   
Old Ben(jamin)
(Login OldBen)
Group #188948

Pieces of Dead Cows

June 1 2017, 9:02 AM 

John at JG Airguns had a bunch of different diameter leather cups made up- give him a call OR
find someone on the Island who messes with leather (Any Tandy Stores still there?) and discuss the project. You can make a die from stacking washers, then form the leather cups yourself-
Barry in Tennessee

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

leather pump cups

June 1 2017, 9:55 AM 

I've been told that the Coleman lantern pump cups work for the Benjamins.

https://www.amazon.com/Coleman-Lantern-Stove-Leather-Washer/dp/B00CEMBTCK

 
 Respond to this message   

Terry M
(Login sotol)
Group #188948

Interesting...

June 11 2017, 4:57 PM 

I, too, have several old pumpers whose velocities are all over the place. Never thought about honing the pump tube. Have you tried it? Anyone?

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

Re: Interesting...

June 13 2017, 11:03 AM 

Can't recall anyone describing having done this but it makes sense that a rough pump tube interior is going have an effect.

Note this comment about carburetor pump tubes:

Today's fuels with ethanol have less lubrication and demand super smooth pump bore surfaces. Polish pump bore with crocus cloth as required. Rough pump bore surfaces will cause pump cup to stick to bore and tear or dislodge from plunger assembly.https://quadrajetparts.com/accelerator-pump-cup-2332-ethanol-resistantfluoroelastomer-p-1587.html

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

101-36 EPD

June 1 2017, 9:28 AM 

Don't know who made it but here's the engineering parts drawing for the pump cup 101-36

101-36(pump cup)

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

Possible source

June 1 2017, 10:01 AM 

Did a search on --Pump Cup 21/32"-- and it turns out this is a common size for carburetor pumps. For example:http://www.carburetor-parts.com/Accelerator-Pump-Cup-2132-x-367_p_1078.html

Looks pretty close.

 
 Respond to this message   
Nick
(Login cartertools)
Group #188948

And is it a coincedence it's a Rochester?

June 1 2017, 11:10 AM 

That's a great find! It's not entirely the same as the drawing but it seems as though the Rochester brand is a big clue...from Wikipedia "The company began as the Rochester Coil Company founded by Edward A. Halbleib in 1908,[2] becoming the North East Electric Company the following year. In 1916 the company was located at 348 Whitney Street, Rochester."
Nick,
From ruralburbian Philomath.
anotherairgunblog.blogspot.com

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

Re: And is it a coincedence it's a Rochester?

June 2 2017, 2:37 AM 

In addition, after leaving Crosman, Rudy Merz setup a small manufacturing business in his garage to supply precision lead balls for carburetors, so, he knew that business.

Just to add, one story I was told about this precision lead ball business is that Rudy always maintained plenty of stock for each dimension; however, on ordering a two to three week delivery was standard. If customer needed the product earlier, and they often did, there was a premium attached to the order.

Rochester is a very interesting city. It is a city of many small manufacturing businesses often located in basements and garages. These small shops thrived because of Kodak and other major manufacturing businesses in the city.

 
 Respond to this message   
James V.
(Login kimo57)
Group #188948

Will order some....

June 1 2017, 2:03 PM 

Will order some & let you know how it works out.

Thank you again
Your stock should not be made of only walnut.

 
 Respond to this message   
Scot Laughlin
(Login classicalgas)
Group #188948

Many parts in old airguns were off the shelf parts from other mechanisms

June 10 2017, 1:18 PM 

That made sense both from the manufacturers view(fewer parts to tool up for)but also for the end user. You could buy the seal washer, pump cup,or check valve seal at your local hardware store or car parts shop.

Leather pump cups of various sizes were common up until the 70's or so, I've seen nearly a dozen different sizes in dusty drawers in old hardware stores.

The Hycar pump cup in some old Benjamin rifles is probably a hydraulic master cylinder seal, as mentioned above, a carb accelerator pump seal is about the right size for a small diameter pump tube.

 
 Respond to this message   
DT Fletcher
(Login DTFletcher)
Group #188948

Here's another 21/32" pump cup

June 13 2017, 11:00 AM 

Here's another variation of a 21/32" pump cup that might work. I recall some airgun pumps using a pump cup like this but can't recall the model

https://quadrajetparts.com/accelerator-pump-cup-2332-ethanol-resistantfluoroelastomer-p-1587.html


 
 Respond to this message   
 
  << Previous Topic | Next Topic >>Return to Start  
Find more forums on Air GunsCreate your own forum at Network54
 Copyright © 1999-2017 Network54. All rights reserved.   Terms of Use   Privacy Statement  
This forum dedicated to all that enjoy collecting and restoring airguns. Have fun. Dave