GTA
General Discussion To Gateway To Airguns => The Shop => : Brutuz December 05, 2009, 06:38:33 AM
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Last week I received a new type of transferportseal but since it was crushed in the mail I had to toss it.
Thought it over and recalled I tried to fit a bolt seal on top last summer.
That didn't work because they were to thick and popped off.
The .177 probe seals I got for my QB78 are thinner and have a larger dia.
The fit is perfect!
(http://www.crosman-air-pistol-owners-forum.com/pics/Brutuz/seal/seal.jpg)
Here's how it looks fitted on the tube
(http://www.crosman-air-pistol-owners-forum.com/pics/Brutuz/seal/seal-tube.jpg)
After putting it back together I took a few shots and the results were positive.
Since I wanted to shoot a full string I emptied the gun, inserted a new powerlet and left it for half an hour to adapt room temperature.
All shots on all three strings were taken with 60 seconds between shots.
Here's the graph
(http://www.crosman-air-pistol-owners-forum.com/pics/Brutuz/seal/GRAPH.jpg)
Here are the strings
(http://www.crosman-air-pistol-owners-forum.com/pics/Brutuz/seal/strings.jpg)
If you'd like to try these seals for yourself,
in the USA they can be bought @ http://www.charliedatuna.com (soldas part ofthe QB-78 tune kit only)
in the UK they can be bought @ http://woodfield-gcp.webs.com
Such a seal has to be placed un-lubed !!
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Thanks for the info!