I posted this in another forum but thought this might be the best place for it.
We are all familiar with that annoying clacking sound of pumping up our Crosman 13xx's, right?
After using some of those vinyl hose cut-off sleeves (that always get cut in half after a few cocks) I've come up with a good solution to eliminate that annoying sound when the pump arm hits the bottom of the tube.
Use a 1-1/8" diameter x 1/8" thick rubber washer from the hardware store. Cut it to size as I did in the pics below. It should stick up about 1/16 to 3/32" above the metal arm. Use the forearm pin (or screw) to hold it in place and you're done!
All it takes is a good sharp knife to make, and they're cheap.
Hope this helps some of you.
(https://i.postimg.cc/ZnCbsXr5/20190330-192230.jpg)
(https://i.postimg.cc/X7BNfSj2/20190330-192604.jpg)
(https://i.postimg.cc/cLqxT96d/20190330-192000.jpg)
(https://i.postimg.cc/qRmBLp6F/20190330-191933.jpg)
(https://i.postimg.cc/3rcJ0JT4/Crosman-13xx-bumper-installed.jpg)
That is a great idea. Good to see that someone finally figured out how to stop the click,clack when pumping. 8)
Thanks. Should last a long time as well. Certainly longer than the 100 or so pumps that I got out of those vinyl hose clipping sleeves that are sold for the same purpose.
The rubber washer is the cheapest way to get the base material and the bonus is that the hole is already there!! :)
Great idea, thanks for sharing :-*
:-* :-*
That is great thinking outside of the box!
These trimmed and properly placed work nicely (more in the box):
Variations on a theme. I'm sure those will work just as well. I bought the washer because it was a consistent thickness across its diameter.
Didn't really think about other options as the idea came to me while buying a washer for a faucet LOL!!
Besides that, if I bought a pack of 32, I'd have to buy 27 more 13xx's to put them on. That's how I am, and maybe why I have so darn many guns.
I have always used the "furry" side of Velcro. :)
Sounds like something a 760 Pumpmaster would benefit from also.
Really gets annoying listening to that clacking.
same as Bill furry velcro
Quote from: Stinger177 on April 01, 2019, 06:06:43 AM
Besides that, if I bought a pack of 32, I'd have to buy 27 more 13xx's to put them on. That's how I am, and maybe why I have so darn many guns.
I never would suggest something that might be used to justify purchasing more pumpers. 😇
Quote from: TomR_here on April 01, 2019, 10:22:53 AM
Sounds like something a 760 Pumpmaster would benefit from also.
Really gets annoying listening to that clacking.
Especially if you're out hunting with your pumper. Nothing attracts small game like the "wack" of plastic against a steel tube! All solutions to that are good solutions.
It's actually not the plastic of the forearm that hits, it's the two "blades" of the metal cocking arm that hits the tube. If you look at the last pic I posted above, inside the yellow circle, you can see where my rubber insert rises a touch higher than the blade edge. It's those two edges that cut through anything slid over them (such as the vinyl tubing that some people use). I would imagine that those edges would eventually cut through fuzzy Velcro as well. My solution transfers all the pressure straight down to the bottom of the groove it's inserted into.
it doesn't completely eliminate any sound, but takes it from the "clack" to more of a soft thump.
My next project is how to make a rubber cover to go over the area at the rear frame screw so it doesn't cut into the web of your hand. Ideas on that are more than welcome. :)
Quote from: Stinger177 on April 01, 2019, 07:33:03 PM
My next project is how to make a rubber cover to go over the area at the rear frame screw so it doesn't cut into the web of your hand. Ideas on that are more than welcome. :)
I filed the corner round then used a black Sharpie to color it black.
Great idea on the use of rubber washers. I had a rubber 'filler band' (bike handlebar devices) that was of the right thickness and height so it was easy to cut to length and poke a hole for the handle cross pin. Not absolutely silent, but much quieter. Any thing that softens the clacking noise will work but a rubber 'bumper' will work the best. Now to fix the 'wobble' on the 13xx's pump arm for my next project.
Quote from: trebor44 on April 04, 2019, 02:16:49 AM
Great idea on the use of rubber washers. I had a rubber 'filler band' (bike handlebar devices) that was of the right thickness and height so it was easy to cut to length and poke a hole for the handle cross pin. Not absolutely silent, but much quieter. Any thing that softens the clacking noise will work but a rubber 'bumper' will work the best. Now to fix the 'wobble' on the 13xx's pump arm for my next project.
Great!! Happy that someone tried it and approves. :)
Someone out there makes a pin with an extra bushing inside that supposedly lessens the wobble. If I find it, I'll post it up.
https://mellonair.myfreesites.net/solid-pins
Bushings & rings are used on all my pumpers.
Just a little something to help a Crosman short coming.
I don't know if they will lengthen the life span of the pump arm but, the use of these two parts will surely tighten the arm & motion & you can "feel" the difference.
I prefer the solid pins from Dave @ alchemy air works but Melons are OK Just not as slick as Daves,
Quote from: BillK on April 04, 2019, 05:15:36 AM
https://mellonair.myfreesites.net/solid-pins
Bushings & rings are used on all my pumpers.
Just a little something to help a Crosman short coming.
I don't know if they will lengthen the life span of the pump arm but, the use of these two parts will surely tighten the arm & motion & you can "feel" the difference.
That's the one I remember seeing. Thanks for posting the link.
BillK - Have you tried this out yourself?
Quote from: Stinger177 on April 04, 2019, 05:18:36 AM
That's the one I remember seeing. Thanks for posting the link.
BillK - Have you tried this out yourself?
As mentioned, all of my pumpers have the Mellon rings & bushings. For a "drop in the bucket"
price.....Why not?
Quote from: BillK on April 04, 2019, 05:32:57 AM
As mentioned, all of my pumpers have the Mellon rings & bushings. For a "drop on the bucket"
price.....Why not?
Sorry Bill, I didn't read your post very thoroughly did I?
I would consider trying one of them out, but I can't get past the "clunky" appearance of the nuts on each side of the tube.
I've been using Alchemy AirWerks pins with the hex/button head screws. Much more streamlined looking IMO. http://www.alchemyairwerks.com/store/c15/Pumper_Must-Haves.html
To be fair though, I really don't shoot my 13xx's enough to worry about the play in the pump arm. I'm sure that Mellon's pins work great.
And, FWIW, I have Mellon FT pistons and valves (https://mellonair.myfreesites.net/pistons-valves) in ALL of my 13xx's. Best deal out there for FT's IMO. :)
Guess I'll have to try the furry Velcro then!!
Quote from: BillK on April 04, 2019, 05:15:36 AM
https://mellonair.myfreesites.net/solid-pins
I prefer the solid pins from Dave @ alchemy air works but Melons are OK Just not as slick as Daves,
d
Dave at Alchemy Air has the best pins and many other parts. Plus he's a good guy.
I know I'm a little late in the game but this mod really helped me out a lot so I thought I might share my variation/take on this mod in case it helps others. Thankfully I bookmarked it since I struggled to find this exact "clack eliminating mod" manually again lol.
I couldn't locate the exact sized rubber washer that OP used so the closest size I found at my local hardware store was 3/16"X1-1/4" washer which I believe is 1/8" or smaller in thickness. I was disappointed when I got home and realized the thickness was off by a lot but a little ingenuity lead this to be a perfect fit & made the mod even easier to install.
I simply folded the washer in half, removed the plastic pump stock, test fitted the washer by sliding it in place like a mini taco in between the metal pump arm. I chose to slide the washer forward so the edge of the rubber was protruding past the end of the pump arm approx. 1/4". Then, I used a drill bit and created a new hole for the screw to go through. I re-installed the plastic pump stock, tested it, no more loud clacking!
IMO Stinger177's mod was the best for longevity compared to some of the Velcro/felt mods since it's held in place by the screw. I think my variation might be a slight improvement since no cutting is involved besides creating a new hole & the fact that the rubber splits open down the middle and opens up when it contacts the pump tube. Only time will tell if this lasts as long or longer.
Lastly, the top contacting edge can be sanded down if your arm doesn't sit flush in the closed position.
Sorry I had trouble shrinking the pic so I couldn't attach it.
Sounds interesting. If you can figure out how to post one, I'd like to see a pic of your solution.
:)