Hw35 t.p

[Hsing-ee]

mine is 1979, .177, single sided safety, leather piston seal and 3mm tp.
Gun had never been apart before i got it.
From the outside the port looks normal, but from the inside it sort of looks like its been sleeved.
It might just be a burr on the edge of the hole though, hard to tell. Im sure weihraich werent sleeving down ports.

I had a 1978 .22 HW35 Export, a very nice example. Power was under 10 fpe with a new standard spring (leather seal). On closer inspection there was a tiny lip of metal on the inside end of the transfer port, looked like the drill bit or whatever tool they used had not quite gone all the way through. So I found a metal drill bit of the right diameter and gently twisted it through the port and cleared the lip. I think it was occluding about 10 per cent of the port at one end. Result? Without any other changes this liberated 1.5 fpe. So make sure your transfer port is open at both ends - COMPLETELY OPEN!

[I. J.]

So make sure your transfer port is open at both ends - COMPLETELY OPEN!

Very true. While Ive not had a blocked or partially blocked t p I always polish mine with a fine needle file and progress to thin oil. Does it make a difference? Who knows but I should think air under pressure travelling through such a narrow orifice needs as little turbulence as possible. A bit like port tunning on race engines.
Anyway, its better than watching 'the box'.

ATB
Ian

[landymick]

Im working on a '35 at the moment. 6292** .177 leather washer. Single sided safety. 1976. 4mm t p.

HTH
Ian

So going on the serial no is it the wider scope rail?
The T.P sizes seem to change from 3mm to 4mm & 3mm again.Still more to check though.
Any one got a pre Rekord to check?

[I. J.]

So going on the serial no is it the wider scope rail?

Yes.

[T 20]

So going on the serial no is it the wider scope rail?
The T.P sizes seem to change from 3mm to 4mm & 3mm again.Still more to check though.
Any one got a pre Rekord to check?

Hi Mick

The transfer ports seem to have been mainly 4mm for leather seals dropping down to 2.8mm when synthetic seals were introduced --- Proffesor Mike explained why in Airgunworld a while ago.

But there were some 2.8mm transfer ported leather sealed guns in the second half of the 1970s, and there was a gun known as the HW35 type C in the 1980's which was synthetic sealed but used a 4 mm transfer port.


I prefer 2.8mm or smaller On a 35 with synthetic seals and find 4mm too slammy.

On one 35 I have I'm running an O ring sealed piston with a 71mm stroke with a 2.3mm transfer port --- I love the firing cycle on this one.



All the best Mick

[18 Wheeler]

HW35 .177 Single sided safety, leather piston seal. #661800

TP = 3mm

Looks ok by eye, but a close up always looks ruff!

[T 20]

HW35 .177 Single sided safety, leather piston seal. #661800

TP = 3mm

Looks ok by eye, but a close up always looks ruff!

Is that the one you were hitting the Quigley bucket with Nick ?


At 75yards standing with open sights.




All the best Mick

[CapitalBee]

A 1973,HW35, .177", leather seal (pre-safety). tp 3mm

NB: I saw that shot at the bash - well done sir :-)

[landymick]

Cheers chaps,i have more to check yet but none have been the 2.8 T.P so far.

[kamag]

So going on the serial no is it the wider scope rail?
The T.P sizes seem to change from 3mm to 4mm & 3mm again.Still more to check though.
Any one got a pre Rekord to check?

Hi mick
The two 35e's that I have are both 3mm one is a 1978 the other is a1986
The earlier one had a leather seal but now has another piston fitted that has the
Synthetic seal. This piston is 5mm shorter than the original. the tp in the 1978
Rifle was not 3mm all the way though into the chamber I used a diamond
Needle file which just happend to be 3mm to open it up its no power house
But running smooth at 11ft Lbs with .22 hobby
Regards
Les

[landymick]

Thats running a healthy power level with that set up.I'm doing an early 70's 35E at the moment with the 4mm port & leather seal this one is struggling with power.I'm using it to test various springs & seals as i go on.

[18 Wheeler]

Is that the one you were hitting the Quigley bucket with Nick ?

At 75yards standing with open sights.

All the best Mick

Sort of . I only put that one together on the morning of The Bash.
.177 barrel from the above, mated to a 1987 action (known as "The Beast serial ~ ends 666) in a Luxus stock (I.J's my inspiration ) fitted with my prototype shroud.
Seemed to work ok (11 ft/lbs, quickish action, no muzzle flip).

I think I was seated when I gave your bucket a bash (), standing would have been some fancy shootin'.

The photo is of the 1977 action's TP, although The Beast's TP looks to be the same size, despite originally being a .22.

For info:Barrel swap/calibre change gave a 0.8ft/lb reduction in ME with the same action.

[T 20]

Cheers chaps,i have more to check yet but none have been the 2.8 T.P so far.

Hi Mick

I bought a single sided safety cylinder off here (from Premier pistol) that was 2.8mm, If I get time I'll measure my 1980s E for you tomorrow.

It's looks like 3mm the norm.



All the best Mick

[I. J.]

Sort of . I only put that one together on the morning of The Bash.
.177 barrel from the above, mated to a 1987 action (known as "The Beast serial ~ ends 666) in a Luxus stock (I.J's my inspiration ) fitted with my prototype shroud.
Seemed to work ok (11 ft/lbs, quickish action, no muzzle flip).

I get blamed for everything.
Ive just finished a nice tune on a .22, pre safety catch (so 13mm rails) leather seal. I recently bought this via a club member. It was a right wreck - bent barrel and cocking lever (replaced), split Std stock, rusty, faulty trigger etc. etc. etc. but it was cheap!
I had it re-blued by Collin Malloy, replaced the stock http://smg.photobucket.com/user/Airs...l?sort=6&o=187 and its now doing over 600 fps with Superdome ( a little too hot for me so I will de-tune it) with a main spring under 180mm so no pre-load. Sweet.

ATB
Ian

[davymole]

having started to resurrect an other 35 from the mid 80,s in .22 TP is 3mm