ROF Upgrade (SRC)

[bareass]

hey all
I have an SRC GenIII M4A1, i would like to up my ROF.
Before you flame me for being a newb, i use low cap mags, so i don;t want the increase so i can light people up and saw down the field. I was the upgrade to improve my response time. i'm looking for the best way to upgrade.
i'm using 9.6 volt batteries.
thanks

[Amos]

A stronger motor would be the easiest way, I recommend a G&P M120 or M140, they're inexpensive and very good motors.. changing motors is a relatively easy thing to do in a M4

[bareass]

thank you, i figured the motor was the best to do. thanks for being brand and model specific.
the motor is in the grip correct?

[theguy]

Yep, M4s use a long type of motor, so any long type motor will work.

Amos's advice of the G&P M120 motor is right on the money (he is the master, after all)

I have one in my rifle, love it to pieces.

Don't buy systema, they are overrated

[Styrak]

Actually a bigger/higher voltage battery would be the easiest. But next would be the motor.

[Amos]

Originally Posted by Styrak

Actually a bigger/higher voltage battery would be the easiest. But next would be the motor.

Not when you factor in the burning of the trigger contacts

Your average technically literate person could change a motor... but your average person would have trouble changing a burnt switch.

[bareass]

my m4 has the battery in the handgaurd, space is limited.
i think 9.6V is plenty high enough.
while SRC say lipo ready i think i'll go with the upgraded motor.
thanks a lot for the advice.
if there is anything else i should consider please feel free, i am deffinitly a newb!
my gun is shooting ~310 right now with a S90 srping, but i'm considering putting the original m120 to get closer to the 400 mark for the summer. i'm also toying with the idea of installing a M16 length inner barrel with a silencer on my outer to conceal it.
i would like to have the extra range for outdoor fields. would this do the trick?

[Amos]

Originally Posted by bareass

my m4 has the battery in the handgaurd, space is limited.
i think 9.6V is plenty high enough.
while SRC say lipo ready i think i'll go with the upgraded motor.
thanks a lot for the advice.
if there is anything else i should consider please feel free, i am deffinitly a newb!
my gun is shooting ~310 right now with a S90 srping, but i'm considering putting the original m120 to get closer to the 400 mark for the summer. i'm also toying with the idea of installing a M16 length inner barrel with a silencer on my outer to conceal it.
i would like to have the extra range for outdoor fields. would this do the trick?

With a 310 FPS spring I wouldn't go higher than a G&P M120 Motor, any higher would be too fast and GREATLY increase the risk of breaking things.

To install the longer barrel you'll also need to change the cylinder into an un-ported one.

Instead of going for the longer barrel, a quality hop-up rubber (Firefly, Guarder Clear +SCS, Systema +SCS) will save you quite a bit of trouble

[Skruface]

Easiest: Higher voltage battery - Cons: burnt out switches require opening mechbox to replace

Easy: faster motor - Cons: none

Harder: MOSFET trigger switch (TriggerMaster or other) Cons: Takes some technical skill to rewire mechbox

Ultimate solution: faster motor + high-drain battery + MOSFET = win

[yuhaoyang]

systema is overrated?
I've used both the M120 and magnum motors before... The latter is much better, but then again it is more than twice the price, so your choice.
if you want to keep it at 310fps then stick with the M120, if you are getting a m120 spring, then it's up to you... I would say systema magnum. Also, if you are opening up the mechbox, you might as well consider a mosfet, since it's not that difficult to wire anyways, and active braking is awesome. I hear a lot of people saying to replace the pinion gear on a magnum, but mine has held up very well so far.

[SHÖCK]

Easiest - Lipo Battery. Small and you can get up to 11.1v and 20C.

I put lipos on stock guns and don't have any problems as long as the stock spring is a 400 FPS rated spring to add neccessary resistance.

[bareass]

what does the mosfet switch do?

[yuhaoyang]

depending on which model you get, stuff like active braking, fire mode programming, ROF programming. It essentially bypasses the trigger mechanism as a method of directly completing a circuit, preserves your trigger contacts, and gets rid of the annoying issue of over-cycling the piston (I'm kind of OCD about that =o). It is marginally beneficial to your motor as well.
Also you can set it between water gun and RS ROFs, and burst fire, which is nice.

[Amos]

Originally Posted by yuhaoyang

systema is overrated?
I've used both the M120 and magnum motors before... The latter is much better, but then again it is more than twice the price, so your choice.
if you want to keep it at 310fps then stick with the M120, if you are getting a m120 spring, then it's up to you... I would say systema magnum. Also, if you are opening up the mechbox, you might as well consider a mosfet, since it's not that difficult to wire anyways, and active braking is awesome. I hear a lot of people saying to replace the pinion gear on a magnum, but mine has held up very well so far.

The Magnum motor is rated at a much higher torque and speed rate than the M120... The G&P M160 though... can EASILY compete with the systema magnum at almost 2/3 the price.

Systema magnums are also known to be very poorly built (who'da thunk it?) Most magnums tend to be over-shimmed causing a very high draw on the battery.

I'm not motor expert, but a local guy that has been into RC hobbies for many years has taken both the Systema and G&P motors apart, they're both not perfect, but the G&P are the clear winner.

[Azathoth]

Originally Posted by yuhaoyang

systema is overrated?
I've used both the M120 and magnum motors before... The latter is much better, but then again it is more than twice the price, so your choice.
if you want to keep it at 310fps then stick with the M120, if you are getting a m120 spring, then it's up to you... I would say systema magnum. Also, if you are opening up the mechbox, you might as well consider a mosfet, since it's not that difficult to wire anyways, and active braking is awesome. I hear a lot of people saying to replace the pinion gear on a magnum, but mine has held up very well so far.

The magnum motor won't even begin to show performance differences against other competitors until you start pulling M150+ springs. My G&P 160 slows down signficiantly pulling the Airsoft Surgeon stage 6. magnum pulls that spring just barely breaking a sweat.