Jefftron Leviathon and pre-engagement issues on Specna E10

[Davegolf]

Nice, glad to hear you got it all sorted, and i think better than you originally planned?

Not my cup of teavisually but nice to see its been done properly

Bet it sounds mental with the hog and an M160!

[Alimcd]

I’m sure it’s not a lot of people’s cup of tea visually. It’s a bit of a dickhead gun. It has come out better than I planned, the trigger response is instant and burst mode is epic. I won’t be running the auto function during a game, 3-5rd burst is plenty and 40rps is too high not to risk hurting someone. 

 

For a bit less of a DSG-with-a-drummag vibe, I tend to rock either the L85A2 or a classic, no frills real wood M14 with a nice Hawke optic.

 

Cant wait to get it out onto the field!

[Alimcd]

Had a few thoughts overnight, 

 

It's pretty much bang on 350 with the M160. Hop is still set for .25's so it's likely a bit hot. I don't know when I last changed the batteries in my chrono (it seems to read lower when they're on the way out) so I'm going to change out the spring for a M150. I'd rather err on the side of caution and what benefit is a few FPS on a ROF build anyway??!.

 

What I'm curious about if what difference the spring change will make, do we work on the assumption that it's actually going to be a reduction of 33fps or does the lower spring tension of a 9 tooth piston mean that the change is no longer directly proportional?

[Davegolf]

Re test with chrono, if you drop down in spring strength then RPS will increase as FPS decreases

[Alimcd]

Hi Dave, I was expecting a bit of a lift in the ROF dropping down the spring stiffness. What I am more curious about is whether to expect a straight 33FPS (same brand spring M160 vs M150) decrease in output velocity or whether it would be less/more due to the DSG retracting the piston so little. Do you happen to know?

 

Unfortunately I need to wait until monday again until I can sneak into the shop to fiddle. At least in the meantime the ejection port cover, silver charging handle-handle and silver body pins will have arrive to add to the eye-sore-ness 

[Davegolf]

Normally about 30fps difference between spring rates, but this can vary on cylinder type and stroke/teeth pulled.

 

There will be others with more DSG experience, but theory and summizing at this level, IE wehn you are so close to your goal; just fit the M150 and re test, if too low you can shim the 150 to up the preload and therefore power, or cut a half (7fps) or full coil (15fps) from the 160 to drop power.