I mounted the action in my spring compressor.
Unscrewing the end cap. (loosen cap, loosen compressor, repeat)
The end cap comes loose.
Just a little moly grease...sigh,
Loosening the pivot scew & nut. I had gloves on at this point because everything was coated in moly.
The hemispherical slotted nut is cool.
Yes, that's moly on the screw.
There are shim washers between the block and the fork. And a little more moly.
Pivot screw, nut and the two shim washers.
The cocking shoe that slides along the piston.
Slightly overlubed. Notice the trend yet?
The piston. Hmmm...
That doesn't look like the HW seal I just received from Maccari...some furious googling resulted in this post from the UK airgun BBS and this pic of a similar Venom piston with o-ringed head. Well it should work fine.
I forgot to mention that I did put the rifle over the chronograph when I had it together before. It was shooting 14.3gr. CPs at 760 fps. The HW80 new is supposed to be at about 800 fps according to Pyramyd and 760 according to Airguns of Arizona, so I'm getting ballpark results of about 18 ft/lbs. And this is the HW80K, K being for Karbine as it has a shorter barrel? So in any case that o-ring likely works well.
The piston is sleeved as well. I couldn't get that pin retaining the head out.
Removing the drunken screws from the cocking handle/muzzle brake...
And the barrel is chewed up.
Did I mention the spring was coated with tar? Not heavy tar but seemingly actual tar as used in asphalt roads.
Still so much more to come...
4 comments:
This so reminds me of working on used cars. I see the Redneck School of Engineering also issues diplomas in airguns.
Yup, sometimes you open up the hood of a beautiful car and see pure horror...
Of course I'm not innocent of the same thing...
You guys would probably more disappointed and frustrated with my err... "engineering." I get "this close" to doing it right, but there always seems to be one little slip-up, like when the sleeve/shim I use on my custom barrel breaks slides just enough out of the way to slightly mar the muzzle.
There's something gratifying about correcting a total cock-up, where there's something completely disheartening about finding a plan that failed by a small margin. Sometimes anyway.
Ryan, I probably make more mistakes than you do...my motto is always that :The Perfect is the Enemy of the Good"
But there's a difference between minor slipups and compromises and total insanity as I'm seeing on this rifle...
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