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Sash clamps.

Printed From: Kiwi Airgunners
Category: General
Forum Name: Flub's General Discussion
Forum Description: General discussion goes in here.
URL: www.kiwiairgunners.co.nz/forum_posts.asp?TID=1121
Printed Date: 23 Nov 2024 at 9:43am
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Topic: Sash clamps.
Posted By: RangerPete
Subject: Sash clamps.
Date Posted: 03 Nov 2024 at 3:02pm
Question for those in the know…
What size sash clamp is needed to unspring a springer?
Bearing in mind I have break barrels, under levers and side levers, what length sash clamp should I get?
I was in mite 10 this morning and the longest that they have is 600mm.
3 options depending on how much clamping force you need, but I’m sure any of them would be powerful enough to hold a spring in.
All 600mm length though. Is that long enough for a fixed barrel?



And then there was this bad boy… 1800mm 😳


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Walk quietly, but carry a big stick.



Replies:
Posted By: nunga
Date Posted: 03 Nov 2024 at 4:37pm
Well the quick release ones will not be any use to you because the release very quickly.

They good for compressing the spring or gas piston.

I just used some timber. drill a hole in it and get some m12 threaded bar with some nuts and a couple of washers and you are good to go. way cheaper


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2nd place HP springer - WFTF World Championships 2014





Posted By: Pauly5
Date Posted: 03 Nov 2024 at 5:46pm
I use a sash clamp.

Or the DIY one is quite do able. It's a good idea to be able to hold the gun as well so it doesn't slip off to the side.


Posted By: kruzaroad
Date Posted: 03 Nov 2024 at 8:38pm
I use a Irwin quick grip.
Place a bit of wood on it to protect the spring. Takes up most of the slack and has a stopping pin at end of bar.
Travels a couple of inches till it hits it. Not that much pressure or travel on an uncocked spring.


Posted By: Pauly5
Date Posted: 04 Nov 2024 at 7:41am
If there isn't much preload, you can sometimes open up without a clamp. But when I opened up my first 97 it had a long soft spring in it and there was about 80 mm of preload, so I needed the travel on a sash clamp to release the pressure or else I would have injured myself. 



Posted By: jwabfrog
Date Posted: 04 Nov 2024 at 8:59am
My five cents is go for a longer clamp around 1200mm with a screw. The screw allows you to make fine adjustments to add or remove compression. With a quick release it releases compression all in on go. A compressed spring has a fair amount of pre compression travel which can release violently and fire parts into dark corners of your garage..... 1200mm length will allow you to hold the barrel + action between the clamps.

Like Pauly said, a means of holding the rifle and stopping it from sliding out of the clamp when it's under compression is a good idea.


Posted By: RangerPete
Date Posted: 04 Nov 2024 at 9:08am
Thanks for the replys guys.
I've also found a 1200mm big metal, screw type sash clamp at miter 10, so I guess thats going to be the one   

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Walk quietly, but carry a big stick.


Posted By: J-S
Date Posted: 05 Nov 2024 at 8:23am
I made a jig up a couple years back; wood base with half a G clamp bolted to it. Wood piece at the end to with a hole to hold the barrel in place and a wood piece along the side for the cylinder.
Worked well for the gun I was doing..


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https://www.instagram.com/js_airguns/" rel="nofollow - J S Airguns
Air Arms TX200('s)
Theoben Sirocco
HW77
FWB 300s
Webley Patriot
One or two others...

Current projects:
Too many..


Posted By: J-S
Date Posted: 05 Nov 2024 at 8:28am


G clamp is off to the right.. it was a knock up job, if I had more time I’d make the barrel stop adjustable and a block to clamp the cylinder down



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https://www.instagram.com/js_airguns/" rel="nofollow - J S Airguns
Air Arms TX200('s)
Theoben Sirocco
HW77
FWB 300s
Webley Patriot
One or two others...

Current projects:
Too many..


Posted By: jwabfrog
Date Posted: 05 Nov 2024 at 8:52am
Nice setup JS, barrel poking through the hole is a good way to make a shorter clamp work


Posted By: J-S
Date Posted: 05 Nov 2024 at 9:37am
Originally posted by jwabfrog jwabfrog wrote:

Nice setup JS, barrel poking through the hole is a good way to make a shorter clamp work


cheers, worked ok for the oversprung gamo.. though you had to break the barrel to slip it through then straighten it out to compress - wouldnt work with a fixed barrel - youd need to make a removable clamping piece... easier to grab a sash clamp!


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https://www.instagram.com/js_airguns/" rel="nofollow - J S Airguns
Air Arms TX200('s)
Theoben Sirocco
HW77
FWB 300s
Webley Patriot
One or two others...

Current projects:
Too many..



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