Quote Originally Posted by BTDT View Post


I'd look for a spring around 2.9mm wire diameter, 19.1 - 19.3mm outside diameter, with between 30 and 33 coils (giving rates between 32 lbf/in and 29 lbf/in respectively) that gave a natural (without packing) preload of around an inch. That should be in the right ball park.
Hi Jim

The standard Meteor MK6 is about the nearest I can find to that spec after cutting but again the OD is only 18.8mm.

Have you tried sleeving the Hawk transfer port down to 2.5mm yet (you'll need to use a Vulcan breach seal) ?


I sleeved My HW35 down from 4mm to 2.3mm yesterday, the power hardly altered but the firing cycle was transformed and the chrono keeps reading dup.
I still can't believe all that air could get through a 2.3mm hole.


You really must try it on your Arnie




All the best Mick