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Sash clamps.

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RangerPete View Drop Down
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    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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nunga View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nunga Quote  Post ReplyReply Direct Link To This Post 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
2nd place HP springer - WFTF World Championships 2014



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post 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.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post 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.
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Pauly5 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post 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. 

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jwabfrog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jwabfrog Quote  Post ReplyReply Direct Link To This Post 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.
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RangerPete View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RangerPete Quote  Post ReplyReply Direct Link To This Post 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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J-S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote J-S Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Thanks (0) Thanks(0)   Quote J-S Quote  Post ReplyReply Direct Link To This Post 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

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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jwabfrog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jwabfrog Quote  Post ReplyReply Direct Link To This Post 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
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