Reinforced Gearbox

woogie said:

So this is my question to you guys......

Has anyone got a systema gear box in there rifle, and how does it perform? I am planning on getting this rifle to 500-550 fps, so that would be the gearbox with the M150 spring. I am trying to find if the gears are the high torque, and need to find a motor that will work.

I know there are a few different gear boxes at the moment.
There is the Systema Complete gear box, the Revolution, as well as the Systema Energy.

So here is my question to you guys.......

1. Which one of the above would be the better choice?
2. Which one will last the longest?
3. What type of motor would be needed?
4. Would I be able to use a 7.4 v lipo in them and have no problems?
5. I would obviously use Duttons semi auto only mod to her, so no worries there.

I know the revolution gear box is awesome! I have found it in a few places, but have heard that you need the Systema hop chamber to use it. But the one good thing about it is that it comes with the motor, and a mosfett. Now this is on the high side of range, but I can eat Ra-man noodles for a while to get her bought.

If there are any other gearboxes that you guys can suggest, let me know. I would also like to hear anything you guys can tell me about the Matrix 8mm gearbox. Of course in the same FPS as the systema.

I would like this rifle to be done by spring next year. So I can use the rifle at my large game.

Thanks in advance guys, and I can't wait to see what you guys come up with.

Click to expand...

Woogie,

Over the years I have had the fortunate opportunity to obtain first hand - hands on - personal experience with a large variety of the many manufacturers of the various airsoft parts designs, and products available to date in the airsoft industry.

I myself do currently own a Systema M150 Revolution gearbox, and have it installed in a custom built JPI SPR semi-auto sniper rifle.
The only issues that I've ever had with the gearbox were during testing it with an M175 spring. The stronger spring broke the last tooth off of the sector gear, and it did it twice within 100 shots each time!
It also twisted the armature shaft completely into on a Systema Max torque motor.
After repairing the gearbox and returning it back to it's original M150 condition, I have had no issues with it since, and it's been running that way for over 1-1/2yrs now and sees regular fielded Milsim use.

In response to your above mentioned questions here are both my honest opinion, as well as some facts regarding your questions:

1. Which one of the above would be the better choice?
My Answer: The Systema Revolution is of a higher quality design over the evolution series.
2. Which one will last the longest?
My Answer: In factory form I would anticipate that the Revolution would under restricted semi-auto use.
3. What type of motor would be needed?
My Answer: I would recommend either a Systema Max Torque, or Matrix 3000 motor foe use with an M150.
4. Would I be able to use a 7.4 v lipo in them and have no problems?
My Answer: In order to provide efficient power delivery to the motor I would strongly recommend nothing less than 11.1v power to drive an M150 gearbox.
5. I would obviously use Duttons semi auto only mod to her, so no worries there.
My Answer:

The pros & cons I find with with the Systema gearboxes are as follows:
Pros:
- Helical gears, provide a much quieter operation, and are higher in efficiency when transferring the delivered ratio, over the traditional flat geared teeth designs.
- A higher quality re-enforced gearbox shell.
Cons:
- Must use Systema Hop-up system
- Cost is considerably over inflated

I would also like to hear anything you guys can tell me about the Matrix 8mm gearbox.

Click to expand...

My Answer:
I have worked on no less than a dozen of the Matrix 8mm gearboxes, and here are my findings & thoughts:
- Every Matrix gearbox that I have repaired including the M130, M140, & M150 series all have suffered from a cracked stock polymer piston head within a very short amount of time!
Two of the Matrix M150 gearboxes resulted in broken gearbox housings in less than a month (both of which had been previously upgraded with aluminum piston heads)
- Most have had the casting on the left hand side gearbox housing that holds the anti-reversal latch in place, broken off after several months of regular use.

All of the above mentioned Matrix M130+ gearboxes were full-auto select fire enabled.
*I don't recommend anything over a Non-Linear M120 spring in a full auto set-up. As an M130 or stronger spring will increase rapid parts wear, or break the internals on many gearboxes in a fairly short amount of time when used in conjunction with Fully Automatic Fire.

In my honest opinion, I hate to see anyone overspend on over hyped or over priced upgrades that one will never see an equal return their fun-per-$ investment.
With your experience and caliber of play, I feel that the Matrix M150 setup could possibly provide you with a much lower costing solution with adherence to the following upgrades & mods:
- Upgrade to an aluminum piston head
- Apply quality lubrication to the gears and all metal contact surfaces.
- As Vendi has mentioned above, to perform the necessary vibration dampening mod work between the cylinder and gearbox housing.
- Locked restriction to semi-auto only fire.
- Matrix 3000 Max Torque Motor
-11.v Lipo battery power

Good luck with your build whichever way you decide to go!

Happy hunting,

The BushMan