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 V-mach piston sleeve for HW35 
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NeuWOCer
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Unread post V-mach piston sleeve for HW35
I've recently acquired a 35E, it looks immaculate but feels quite rough to cock, has a jarring recoil and considerable "spring twang". I haven't opened it up yet but I'm considering fitting a V-mach tuning kit to it.
I put one in my 77 and it made a considerable improvement to the factory standard so I fancied doing the same to the 35 anyway.

Looking at the V-mach website, it looks like the tuning kits for the 35's don't come with piston sleeves. Does anyone know if there's a reason for this?

I was hoping a sleeve would remove the "twanginess". I know they're reasonably easy to make but I'm wondering why V-mach wouldn't supply one when they do for the other kits.


Fri Feb 11, 2011 2:15 pm
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Unread post Re: V-mach piston sleeve for HW35
I just installed a Vortek kit in my HW50s it has both a top hat and ainside outside sleeve, This has brought my fps up to max and it shoots very smooth and quiet >I though the HW was nice before but this realy made for a nice cocking and firing cycle John

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Fri Feb 11, 2011 4:11 pm
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Unread post Re: V-mach piston sleeve for HW35
Why not give Steve Pope a phone call.



j2


Fri Feb 11, 2011 5:28 pm
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Unread post Re: V-mach piston sleeve for HW35
john2 wrote:
Why not give Steve Pope a phone call.

j2



I thought I'd ask here first before I bother him as I'm sure he's quite busy.
Someone must have fitted a V-mach kit to a 35 before, was just wondering if there was a technical reason for not getting/fitting a sleeve.
I'll ask him later if no-one here can help.


Fri Feb 11, 2011 6:49 pm
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Unread post Re: V-mach piston sleeve for HW35
I just re-assembled my HW35 with a spring guide and top hat machined out of nylon 66 (molybdenum loaded). I thought about fitting a PTFE spring sleeve but on mine there's too little clearance (< 0.5mm) between the outer diameter of the spring and inside diameter of the piston.

Hopefully a centralized spring and a generous amount of grease should reduce the twang a bit.

Cheers,
Chris


Fri Feb 11, 2011 10:02 pm
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Unread post Re: V-mach piston sleeve for HW35
chris68 wrote:
... but on mine there's too little clearance (< 0.5mm) between the outer diameter of the spring and inside diameter of the piston.



Ah! that'll be the answer, thanks Chris.

Shame, mine sounds like a ruler off the side of a desk.
Maybe the new spring from a V-mach kit will help sort it.


Fri Feb 11, 2011 10:33 pm
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Unread post Re: V-mach piston sleeve for HW35
MMy HW35 is fitted with a Bonnie & Clyde kit. Spring, with delrin top hat and guide, and a PTFE piston liner. The kit I have uses a smaller diameter spring than standard, so there is room for the liner. ;)

The way you describe your gun's behaviour at present reminds of mine whwn I first bought it. It turned out to have an OX spring in it. :shock: It shoots very nicely now though, at 11.6ft/lbs. Smooth and quick. ;)

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Sat Feb 12, 2011 10:39 am
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