Interesting to see that HW used a completely different rear sight on the last of these and never used it on another model. Mach 1.5
The standard synthetic sealed Oldschool HW50 piston weighs in at 200-202 grams, Tone.
Bore X stroke = 25mm X 65mm.
Transfer port = 3mm X 25mm.
My playing with HW50s, if it's any help ? :-
https://www.airgunbbs.com/showthread...16#post8129716
If I did another one I'd just increase the stroke by 5mm by machining the piston arbor to accept a TX piston seal then weight the piston back up to 200 grams.
All the best Mick
Interesting to see that HW used a completely different rear sight on the last of these and never used it on another model. Mach 1.5
Hi Mick. These are a plastic job with HW stamped on it. A cross between an original 45 rear sight and the front end off the new housing of the current HW rearsight range. Mach 1.5
Just had a look at the article Pete Evans did on his HW50. Great read. Mach 1.5
Wish i could get my hands on one to try as my modern 50S bought secondhand for £100 is sublime to shoot, only did the anti galling mod & stippled the forend & pistol grip on this one ,never had the need to look inside it shoots so well.
Hi Mick
I bought a Hw99s when they first came out and yes after wracking my mind, the graphite reinforced plastic rear sight did come with the 99s but as hard as I try, I can't remember what rear sight was fitted to my Mk1 Hw50s.
Although that was 27 years ago so I won't be losing any sleep over it
All the best
John
Hw77+7
Seems made from 1950 till 1995. The last versions hitting the UK in 1992. Mine is a 1993 but no Hull Cartridge markings on it. Mach 1.5