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PostPosted: Thu Jan 28, 2016 10:32 am 
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Joined: Mon Aug 24, 2015 4:56 pm
Posts: 462
Location: Tecumseh, Ontario in South Western Ontario
I've been going through breach seals too quickly it seems. I finally realized that can't be right and took a closer look. The camber port (if that's what it's called) doesn't line up with the breach port. I have since cut a little off the seal on the right side in this case, for better air flow but from the impression on the seal I can see it's still allowing air out the left side.
I don't have machining tools but there's a shop I use, if I new what to tell him. Any ideas.
Thanks,
Ed.

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PostPosted: Thu Jan 28, 2016 9:05 pm 
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Joined: Mon Aug 24, 2015 4:56 pm
Posts: 462
Location: Tecumseh, Ontario in South Western Ontario
I have since dealt with a warranty repair shop, R&R airgun repair in Manitoba and he told me he has repaired another BLeverage with the same problem. 'I recently had a Leverage in the shop for warranty repair in which the barrel breech did not line up properly with the silver compression chamber.'. He said he had to change the compression chamber in it because of poor quality control at the factory in China. To me it looks like the barrel breech or port is the one out of whack according to my measurements. I guess you get what you pay for.
I'll try the compression chamber exchange any way. It's a nice gun and freaky accurate otherwise.
Ed.

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PostPosted: Sat Jan 30, 2016 4:27 pm 
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Joined: Mon Aug 24, 2015 4:56 pm
Posts: 462
Location: Tecumseh, Ontario in South Western Ontario
I repaired the gun by moving a slot (filing and welding) at the bottom of the compression chamber that controls the breach alignment. I took pictures but am still having trouble posting them.
Anyway the alignment is good now but that just led to a new problem. Before the nitro piston conversion the gun shot at less than the advertised velocity. I didn't realize it was the breach alignment problem. The conversion brought it up to where it should have been but going through a lot of seals. Now with the alignment corrected the gun shot a 7.5gr pellet at 1415fps! Too fast for sure so I thought I'd just keep trying heavier pellets until I found one that would shoot just under 1000fps. Before I was able to find that out there was a gradual loss of power. I checked the seal and found it had turned glossy and shrank in size letting air out. Could this be heat damage? Are there seals that can take higher heat levels?
It was a lot of work for me to convert the gun but unless I can find a better seal I'll be putting the spring back which at least should be better now with the new breach alignment.

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PostPosted: Fri Feb 19, 2016 11:39 pm 
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Joined: Mon Sep 03, 2007 7:56 pm
Posts: 173
Location: Sidney, BC.
Interesting speeds your getting there..what are you using for a Chronograph?
KEN.


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PostPosted: Sat Feb 20, 2016 4:45 pm 
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Joined: Sat Jan 25, 2014 9:16 pm
Posts: 1271
Location: United States
I was thinking dieseling but typically not possible unless maybe you used a more volatile lube/fuel, so now I'm with Ken wondering about the crony.


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PostPosted: Sat Feb 20, 2016 5:54 pm 
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Joined: Thu Sep 01, 2005 1:41 pm
Posts: 997
Location: GTA
I had a gun shot around 1400 fps once. Got lube in front of seal by accident.
One shot, big bang, blown seal. Had to tear it down and replace the seal after one shot.


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PostPosted: Sun Feb 21, 2016 11:18 am 
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Joined: Mon Aug 24, 2015 4:56 pm
Posts: 462
Location: Tecumseh, Ontario in South Western Ontario
Yes it must of been dieseling. When I put in the nitro piston I must of over oiled the compression/combustion chamber as usual and even greased the piston seal. That also explains the burnt breach seal.
Anyway it's settled down now and shooting consistently in the 970s. I think the chrony's alright.
Thanks, Ed.

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