Quote from: Motorhead on June 03, 2016, 04:57:34 PMFWIW ... having made, sold and set up guns for customers, done 100's of LW nylon hammers, some with a PEEK striker contacts, bounce has not been an issue at pressures above say 1400-1500 psi used within .177 & .22 rifles in the 15 to 35 Ft lb power range.LW hammers with such low mass the rebound energy seldom is enough to crack the valve a second time upon a bounce. They can certainly .. but with a proper poppet spring tension and a good tune balance with regulated pressure would suggest going K.I.S.S. and play without all the widgets first Agreed, not much bounce in mine now. Guess it would be better served on a metal hammer.But that goes aginst my new motto:
FWIW ... having made, sold and set up guns for customers, done 100's of LW nylon hammers, some with a PEEK striker contacts, bounce has not been an issue at pressures above say 1400-1500 psi used within .177 & .22 rifles in the 15 to 35 Ft lb power range.LW hammers with such low mass the rebound energy seldom is enough to crack the valve a second time upon a bounce. They can certainly .. but with a proper poppet spring tension and a good tune balance with regulated pressure would suggest going K.I.S.S. and play without all the widgets first
"PEEK contacts"?Care to elaborate on this term ? just curious,soaking up all the info I can.
Quote from: rockmike on June 03, 2016, 06:05:42 PM"PEEK contacts"?Care to elaborate on this term ? just curious,soaking up all the info I can. PEEK most know of as a VERY TOUGH material, tho if you will a plastic in generic terms.When used as the CONTACT point on a hammer to poppet stem it eliminates the TINK of the metal on metal contact, eliminates the end of poppet stem from mushrooming over time and ever so slightly damps the kinetic bounce of the impact. In the UK and Europe commonly the strike end of a hammer is known as a PIP and thus PIP TIP
I would go larger on the holes as large as possible. You are exchanging a static material for a fluid material. And you have more room for springs.
Quote from: moorepower on August 11, 2016, 04:27:22 PMWith the volume you are loosing in the air cylinder, I am betting no. An SSG, "might" get you close to that 40 shot string. The E.S. should tighten up nicely.
With the volume you are loosing in the air cylinder, I am betting no. An SSG, "might" get you close to that 40 shot string. The E.S. should tighten up nicely.
While this data of a .22 cal M-rod has been shared a few times, its data is just as solid as the year it was done ( @ 3 years ago )This from a Factory Air tubed Gen 1 in .22 caliber. Modified valve / plumbing with a regulator using a 28 gram hammer.String was @ 40 shots while under regulation and @ 10 more before velocity started falling.So we have 50 shots with JSB 18.1's at @ 865 fps at 30 ft lbs per shot.YES ... very doable * Tho not documented in original data, the ES of the 50 shot string was inside 10 fps