New sr7 owner!
Posted 06 April 2014 - 01:09 AM
-thanks in advance for my jumbled up questions
Posted 06 April 2014 - 04:00 AM
Cyclic rate (called rate of fire in airsoft for unknown reasons) is almost completely dependent on motor speed which (minus a replacement "high speed" motor) is dependent on battery voltage. An 11.1v LiPO battery will dramatically boost the cyclic rate and is a "drop in."
Range is a function of pellet velocity and mass. The air resistance to the projectile is astounding and muzzle velocity drops very fast. A heavier pellet will have more momentum and tend to maintain its velocity better than a light pellet. Classic, dramatic example is how far you can throw a baseball compared to Styrofoam ball the same size and shape.
A 0.30g pellet is 50% heavier and hence has 50% move momentum than a 0.20g with at the same velocity. The complication here is the gun won't fire the 0.30g pellet as fast as it fires the 0.20g! You'll have to experiment with BB weights to see which gives you the most range. To go beyond this requires opening the gearbox to increase the spring weight which sill increase muzzle velocity and a cylinder with more volume will push more air down the barrel. Note a heavier spring will cause the motor to work harder and decrease the cyclic rate.
A ballistic software designed for firearms works poorly for airsoft because of the hop up effect on the pellets that adds lift. Bullets are only affected by gravity.
Posted 06 April 2014 - 08:43 AM
I myself just purchased an SR7 about a month ago and used it for the first time yesterday. I'm in love! Here's what I did:
Changed my spring (for some reason it was only shooting around 320) from an M110 short to an M110 long. Probably would be best if you let a tech do it if it's your first time.
Changed my bucking to a Maple Leaf 70°. I am currently obsessed with these buckings. They outperform any other bucking I've ever seen.
And finally, I use a custom built 11.1v 2200 mAh battery. You can get one from eliteairsoftbatteries.com.
All these combined gives me an FPS right at 400 +/-5 consistently, accuracy to probably somewhere around 200 maybe 250 feet (haven't tried much farther), and ROF of somewhere in the realm of 23 or so. The spring was $10. The bucking was $10. And the battery was $40. I don't think I'll do anything else to it, I love it so much!
Posted 06 April 2014 - 11:53 AM
Posted 06 April 2014 - 05:29 PM
Posted 06 April 2014 - 06:23 PM
I just bought a Madbull for my SR10, and I haven't noticed that much of a difference. Although let it be known I installed it Friday night, and my friends used it most of Saturday. I only got like 5 minutes with it and I didn't even have it sighted in. So I can't answer that as of now. Maybe I'll have a better answer tomorrow. As for the sound, try fiddling with the middle screw on the bottom of the pistol grip. That screw (it's big and flat head) applies pressure to the motor. When I first received my SR7 the screw was over tightened and was produced a higher pitch sound with a little bit of whine. After some adjustment, it sounds normal and I believe even better trigger response.
Edited by Pyro_Buster, 06 April 2014 - 06:25 PM.
Posted 06 April 2014 - 07:09 PM
Posted 06 April 2014 - 11:15 PM
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