Do it yourself Depingers

A place to share your tips and tricks for modifying your FX Airgun.

Re: Do it yourself Depingers

Postby mamcrackin on Mon Oct 26, 2009 11:16 pm

Great makka...Glad everything worked out....It does make the rifle even more of a pleasure to shoot...
BSA Super Ten MkII .22
FX Cyclone .22
Beeman Falcon R .22
AirForce Condor .22 Airhog 2,200psi regulated
Mac1 US FT .22
Theoben Rapid .22 in transit...
Edgun .22 in transit
mamcrackin
 
Posts: 41
Joined: Sat Aug 29, 2009 5:18 pm
Location: US Alvin, Texas

Re: Do it yourself Depingers

Postby slidecontrol on Tue Oct 27, 2009 12:03 am

mamcrackin wrote:
makka wrote:Me too.
I love this mod of yours mate. Thanks.
Gonna give it a go on Monday.
I read somewhere that it can damage the valve to dry fire it to empty.
Is that likely to be true?
If so is there another way to empty the cylinder?


You're welcome. I am glad so many are giving it a go...
Valve damage is possible but not probably in my opinion....I feel as though the valve has the
same amount of pressure on it whether there is a pellet in the breech or not...I would
not advise continually dry fireing the rifle but for the intense purpose of installing this
mod I think it is more than safe and would not be considered abuse......


a pellet in the breech is not the issue when dry firing to empty the tube, reduced pressure as the tube empties is. Once the pressure falls away, there is a good chance the hammer can slam into the valve body as it meets a lowered resistance from the valve stem. Damage to the stem itself can result as can a peening of the stem channel, which may cause the stem to stick and drag.
slidecontrol
 
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Joined: Thu Feb 26, 2009 4:37 am
Location: hamilton new zealand

Re: Do it yourself Depingers

Postby mamcrackin on Tue Oct 27, 2009 1:45 am

slidecontrol wrote:
mamcrackin wrote:
makka wrote:Me too.
I love this mod of yours mate. Thanks.
Gonna give it a go on Monday.
I read somewhere that it can damage the valve to dry fire it to empty.
Is that likely to be true?
If so is there another way to empty the cylinder?


You're welcome. I am glad so many are giving it a go...
Valve damage is possible but not probably in my opinion....I feel as though the valve has the
same amount of pressure on it whether there is a pellet in the breech or not...I would
not advise continually dry fireing the rifle but for the intense purpose of installing this
mod I think it is more than safe and would not be considered abuse......


a pellet in the breech is not the issue when dry firing to empty the tube, reduced pressure as the tube empties is. Once the pressure falls away, there is a good chance the hammer can slam into the valve body as it meets a lowered resistance from the valve stem. Damage to the stem itself can result as can a peening of the stem channel, which may cause the stem to stick and drag.


Given that bit of information slidecontrol . What would be your advice as to how to empty
the air tube? I am sure the members and I would appreciate a safer method
of emptying the air tube if one exists...Please advise.
BSA Super Ten MkII .22
FX Cyclone .22
Beeman Falcon R .22
AirForce Condor .22 Airhog 2,200psi regulated
Mac1 US FT .22
Theoben Rapid .22 in transit...
Edgun .22 in transit
mamcrackin
 
Posts: 41
Joined: Sat Aug 29, 2009 5:18 pm
Location: US Alvin, Texas

Re: Do it yourself Depingers

Postby makka on Tue Oct 27, 2009 8:18 pm

too late now for me anyway.
The rifle appears fine and still shoots great and holds air.
I bought a new muzzle weight and shooting bags the other day and discovered just how accurate this rifle can be finally!
Amazing. I think with a little practise I will be able to shoot 1/4 inches at 40 meters which is definitely good enough for me.
Laughter, the best medicine
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Location: Jungle behind Byron Bay, NSW. Australia

Re: Do it yourself Depingers

Postby slidecontrol on Tue Oct 27, 2009 8:37 pm

mamcrackin wrote:
Given that bit of information slidecontrol . What would be your advice as to how to empty
the air tube? I am sure the members and I would appreciate a safer method
of emptying the air tube if one exists...Please advise.



I empty mine by dryfiring ( or shooting a target ) for 30 or 40 shots ( probably 50 is even better)*, then remove the tube from the gun ( i like to use a strap wrench ).
it will come out complete with the firing valve.
find a bit of hardwood and stand the tube on it vertically, valve end down against the wood.
a good firm blow to the filler end, straight down with an open palm will open the valve to release the remaining air ( loud ), it may take 2 or three strikes to fully discharge the air. ( if you have delicate palms a rubber mallet can be substituted with care )

its a little more involved than the complete dry fire method, but a greatly reduced chance of damaging your valve


my shot count is based on a full power rifle, 16j and lower guns will require far higher shot counts to empty ( but you guys already figured that out )
slidecontrol
 
Posts: 27
Joined: Thu Feb 26, 2009 4:37 am
Location: hamilton new zealand

Re: Do it yourself Depingers

Postby mamcrackin on Tue Oct 27, 2009 10:43 pm

That sounds like a great alternative...I didn't realise there was a
valve on the end of the tube that could be opened...Thanks for the info...
BSA Super Ten MkII .22
FX Cyclone .22
Beeman Falcon R .22
AirForce Condor .22 Airhog 2,200psi regulated
Mac1 US FT .22
Theoben Rapid .22 in transit...
Edgun .22 in transit
mamcrackin
 
Posts: 41
Joined: Sat Aug 29, 2009 5:18 pm
Location: US Alvin, Texas

Re: Do it yourself Depingers

Postby Simply Simon on Sun Jan 03, 2010 7:46 pm

I'd love something like that for my Verminator because that the only sound that comes from it when it has the HW silencer on. I'm fairly new to air gunning and have only recently bought the Vermy. Where would I have to put this to eliminate the ping? Would it be the front air cylinder?
Simply Simon
 
Posts: 62
Joined: Sat Jan 02, 2010 5:42 pm

Re: Do it yourself Depingers

Postby mamcrackin on Sun Jan 03, 2010 9:37 pm

Simply Simon wrote:I'd love something like that for my Verminator because that the only sound that comes from it when it has the HW silencer on. I'm fairly new to air gunning and have only recently bought the Vermy. Where would I have to put this to eliminate the ping? Would it be the front air cylinder?



I think Yes the front cylinder... It is very easy to install....
BSA Super Ten MkII .22
FX Cyclone .22
Beeman Falcon R .22
AirForce Condor .22 Airhog 2,200psi regulated
Mac1 US FT .22
Theoben Rapid .22 in transit...
Edgun .22 in transit
mamcrackin
 
Posts: 41
Joined: Sat Aug 29, 2009 5:18 pm
Location: US Alvin, Texas

Re: Do it yourself Depingers

Postby Simply Simon on Sat Jan 16, 2010 7:38 pm

Any idea where you can get 1 1/4" or 1 1/2" vinyl hose in the UK? B&Q only go up to 19mm and all the UK sites don't go near those sort of widths. It's all US sites, who will even sell by the foot.... damn you Yanks and your well supplied retail outlets!

Had the same trouble when I was trying to make a homemade yagi for the falconry. Got advice from a very helpful American who said 'Simply pop down you local hardware store, they are bound to have X, Y and Z'.
Simply Simon
 
Posts: 62
Joined: Sat Jan 02, 2010 5:42 pm

Re: Do it yourself Depingers

Postby mamcrackin on Sat Jan 16, 2010 10:27 pm

Simply Simon you can use any type of hose as long as it has a thick wall.... Radiator hose as is used on a motorcar will be fine....
BSA Super Ten MkII .22
FX Cyclone .22
Beeman Falcon R .22
AirForce Condor .22 Airhog 2,200psi regulated
Mac1 US FT .22
Theoben Rapid .22 in transit...
Edgun .22 in transit
mamcrackin
 
Posts: 41
Joined: Sat Aug 29, 2009 5:18 pm
Location: US Alvin, Texas

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