just bought a hw100t .177, after firing theres is a sound like a piston sucking air , i dont recall this on my last hw100 . also its gone from 200 bar to 110 bar wit 30 shots . any one had this before ?
Its a full length rifle, not the carbine
Registered User
just bought a hw100t .177, after firing theres is a sound like a piston sucking air , i dont recall this on my last hw100 . also its gone from 200 bar to 110 bar wit 30 shots . any one had this before ?
Its a full length rifle, not the carbine
Registered User
Sounds like something isnt closing properly inside the mechanism and causing air to leak, is it new? if it is I would take it straight back and get it sorted out.
TX200 Mk3 HW100 HW97
Dunkingdonuts
Sounds to me like it's using way too much air per shot. Is it ok on a chrono?....if so then i would say thet the reg has been set incorrectly or you have some o ring/spring/ valve damage internally. Some great vids on Youtube that might give you an idea.
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its a 2008/9 , i drove from northumberland to nottingham to get it yesterday so taking it back to the lad isnt an option. i had a couple shots over the chrono just now and its coming back at 13.1 ft/lbs so im going to attempt to take it apart today. the 2 shots over the chrono were the same fps , i know its only 2 shots but at least its a sign the reg is ok
Buys suspicious amounts of hand sanitiser
You can end up with similar overpower by having a full length barrel on an action set up for a carbine barrel. But I would not expect a full length cylinder to only give 30 shots 200-110bar, even if a bit overpowered.
Not without a considerable leak.
Are the stock and cylinder full length?
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Turn the large allen screw on the regulator anticlockwise half a turn, and re-chrono. You can mark position before you move it. See pic..Originally Posted by pikk
Baz
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Registered User
If sounds like it was messed with for extra power and not set back properly. People keep messing with the regulator in HW 100 as it is an easy option to alter the power but it is the wrong option and returning the preload screw to a known position does not always guarantee return to correct pressure but uncsrewing it 1/2 to 4/4 of a turn to start with is an option. The rgulator for a full length barrel .177 should be set to around 90 bar and then the hammer preload adjusted to obtain 11.7 ft.lbs with the JSB Heavies and 11.3 f.lbs with 8.44s. You should be getting about 110 shots out of the full length cylinder at around 11.3 ft.lbs.
A.G
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