Quote Originally Posted by coburn View Post
Hi T20 might need some help on 35 tuning. My 35K arrived yesterday and looks to be in good nick. Its been unused for a while and is very "dry" lube wise.

I've fitted an Anschutz Dioptre and it shoots RWS Superdomes into one ragged hole at 12 metres however over the Chrono after a squirt of SM40 in the transfer port I get a mere 520fps with Superdomes and 580fps with Hobby. Not great for .22.

I intend to strip, inspect and lube but can anyone tell me what length a std 35 spring should be?. Also I remember many people on here writing that HW springs of late were fairly mediocre is that true?
Hi Coburn
I really couldn't tell you what the original size of a HW35 spring is.
Perhaps this would explain why

http://www.airgunbbs.com/forums/showthread.php?t=301845

I hope this explains the situation with my 35.
As a coded welder I believe there are many HW35's out there with poorly brazed breach block joints.
Jim Tyler (BTDT) in his recent article in Airgunworld (Feb 2009) says this problem occured in the 1970's in a few 35's, I just wonder if the problem still happens once in a while and gets missed at quallity control.
I don't think you have one of these Coburn as your power output is fairly high compared to a poorly breach one.

From the Weihrauch site it would seem that the HW35 is only advertised as doing 574 ftps in .22" calibre.

http://www.weihrauch-sport.de/englis...te/e-index.htm

When I get five mins I will scan all the articles I have on tuning the HW35 so that I can send them to other members.

Hope this lot helps you a bit for now Coburn

All the best Mick