Quote:
Originally Posted by shadow_matter
I'm running a TM that comes stock with a Ver.3 gearbox and an EG1000 motor. Since I got the gun I've added a Systema helica gear set, had the mechbox reshimmed, had stainless bushings installed, upgraded the piston and head, and had a moderate spring upgrade so it chronies around 340-350fps.
The problem is that since the upgrades have been installed my ROF has SIGNIFICANTLY suffered with the stock 8.4v battery. I am going to pick up a 9.6v battery this upcoming week, do you think that is enough, or should I go higher? Also, are there any other upgrades that I can put in that will raise the ROF back to the stock level if not better?
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helical gears are generally (but rather rarely) installed to generate huge torque to pull back a very stiff spring. the last choice of gears for a high ROF setup. high ROF setups also should use bearings rather than bushings. the bearings make a huge difference in reducing friction. the stiffer the spring, the lower the ROF. judging from your FPS, you probably installed a M110. highest ROF will be achieved with either a stock M90 or an M100. most folks would go with an M100 for a little extra FPS boost. a short to medium length barrel is also an essential ingredient, so each BB can clear the barrel before the piston pulls back for the next shot.
we just built a high ROF gun for a customer. 7mm bearing gearbox. M100 spring. high speed gears and high speed motor. stock M4 length barrel. 9.6V 3800mah Intellect crane battery. FPS was 320 with 0.2g BB's. ROF was an absolutely insane 36 BB's per second (according to our chrono)!! it empties an entire 300 round high-cap in just under 10 seconds. most amazing stream of BB's we've ever seen spew forth from a gun. it looked like a clothesline coming out of the end of the barrel. just a solid white line of plastic. far faster ROF than a CA MkII SAW. we put a 5000 round box mag on it and dumped the entire magazine in under four minutes, including the time to stop and wind it.