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PostPosted: Sun May 18, 2014 7:14 pm 
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Joined: Fri Jun 01, 2007 11:36 am
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Location: Nova Scotia, near Halifax
hey all,

there are two mods i haven't heard of before

shimming around inside of the piston with a pop can? why? to keep the spring from moving around during firing? would a very thin brass sheet work better?

rubber under the top hat? sound like a neat idea.

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PostPosted: Sun May 18, 2014 9:34 pm 
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Location: Komoka Ont.
I cut a plastic bottle to make a sleeve for inside the piston and have never had one fail even after thousands of shots, as far as the rubber behind the tophat I don't think it would work as a vibration reducer very well if thats what it was intended to do.
Image

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PostPosted: Mon May 19, 2014 11:29 am 
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Joined: Sun Jul 28, 2013 8:34 pm
Posts: 1155
Location: Vernon BC
Yes brass shim stock would work better, well more durable, than the popcan. It completely transformed my Phantom!! I see you have a Phantom too, give it a try! :D

Try either Gerard's technique or brass or popcan. With the brass shim stock, my set up looked like Gerard's. Without the end cap, and not fully around the spring. When I first tried the popcan, it does reach fully around and both sides touched. But was warned of the main spring tearing up the thin, fragile aluminum of the popcan.

So then I didn't want to risk it and bought some brass shim stock. But maybe non-PAL Phantom's spring won't be as harsh on the popcan?


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PostPosted: Mon May 19, 2014 11:32 am 
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Location: Brant County
GarthThomas wrote:
I cut a plastic bottle to make a sleeve for inside the piston and have never had one fail even after thousands of shots, as far as the rubber behind the tophat I don't think it would work as a vibration reducer very well if thats what it was intended to do.
Image


ive been using a thin piece of tefon with great success, smoothed her right out ;) whats been done to your tophat Garth it looks like it coated?

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PostPosted: Mon May 19, 2014 3:31 pm 
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Joined: Sat Jan 25, 2014 9:16 pm
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Location: United States
I wouldn't use alum, or brass for that matter. I've been using plastic from 2-liter soda bottles. It really smooths and quiets the spring, plus reduces friction and wear. Here's a couple pix from my do it yourself guide:


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PostPosted: Mon May 19, 2014 4:10 pm 
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Location: Alberta Canada
Chevota wrote:
I wouldn't use alum, or brass for that matter. I've been using plastic from 2-liter soda bottles. It really smooths and quiets the spring, plus reduces friction and wear. Here's a couple pix from my do it yourself guide:

Actually the 2L pop bottle is the next best and cheapest compared to maching one. Wrapped over a wooden dowel held in palce with rubber bands. Run under hot tap water for a few minutes and then place in the fridge. Yea I know dont let the wife see you that. It will mold itself very well for your desired application.

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PostPosted: Mon May 19, 2014 6:46 pm 
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Joined: Fri Jun 01, 2007 11:36 am
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Location: Nova Scotia, near Halifax
cool thanks guys.
so it helps with vibration?

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sub 500 .22 Crosman Phantom 500 open sites
sub 500 .177 Crosman TR77 NPS 4-16x40 UTG
sub 500 .177 Hatsan mod 33 with Quattro trigger open sites


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PostPosted: Mon May 19, 2014 9:02 pm 
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Location: Alberta Canada
Removes the excess play, helping to remove the vibration. Combined with a little moly tar. Smooth is a descriptive word I would use.

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PostPosted: Mon May 19, 2014 9:11 pm 
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Whitewolf wrote:
place in the fridge. Yea I know dont let the wife see you that.


quickreply7789 wrote:
so it helps with vibration?


*coffee spit*

Sorry, I lost it there for a moment.

Jim


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PostPosted: Tue May 20, 2014 4:55 am 
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Joined: Sat Jan 25, 2014 9:16 pm
Posts: 1271
Location: United States
Yes it helps with vibration a lot, but it's not the only mod you can do. The pix I posted dies not tell the whole story of what I do. I also make then fit so tight it's as if they're bonded to the piston and other stuff I consider important. This method is to reduce noise and vibration without using Tar. Tar kills power so I did this to keep it. If you don't care about power then Tar is certainly easier and makes it quieter.
If you want the full details it's in my tuning guide, if you want it write me at chevota at hotmail com. It's full of other mods for break-barrels too. That goes for anyone who wants it.
Not sure what Whitewolf meant with the dowel and fridge...


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PostPosted: Tue May 20, 2014 7:57 am 
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Joined: Fri Sep 09, 2005 11:55 am
Posts: 231
Location: England.
Its just done as an easy way out to reduce the lubricant escaping from the spring.

Springs expand when compressed!


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PostPosted: Tue May 20, 2014 8:01 am 
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Joined: Fri Sep 09, 2005 11:55 am
Posts: 231
Location: England.
I bought a BSA Goldstar 20 year ago, that came with a various rubbers and shot a lot better than the regarded TX200.


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PostPosted: Tue May 20, 2014 5:49 pm 
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Joined: Wed May 07, 2014 7:32 am
Posts: 283
Location: Somerset, UK
I use a thin rubber washer between tophat and piston, it does seem to cut down on mechanical noise, a shim over the spring insulates the spring from the piston wall, not all guns have room for one but quite a few lads over here use 0.25mm acetate sheet. A properly fitted spring guide and tophat will work wonders though.
Regards
Tim


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