TM M14
 

Ok so i have been thinking about making my M14 into a long range gun, but not a sniper. I almost always play with it on single shot and I am getting a scope for it and stuff so... a few questions...

1) What would an M140 spring give me in the way of FPS? (Please don't give me the link to the spring chart because I don't understand it)
2) What kind of motor does the M14 use? a short one or a long one?
3) I need a High Torque motor with a stronger spring?
4) With an upgrade to the spring and motor, I should upgrade the gears and the bushings and stuff or will it not matter as I am not looking for speed?

Thanks in advance :D :D

M140 would put you in the high 400's I'd say, nearing the 500 mark. M14's use a long type motor. You won't need to change the motor. If it is completely stock metal bushing couldn't hurt, I don't think your gears would be an issue.

Here's what I've put in my Kart M-14.

-Guarder 6.04 TB Barrel
-Systema M120 spring
-KA metal Bushing
-Guarder Hi troque motor.

All this to shoot around 365. However, I suspect the cylinder to leak air. M120 should shoot around 400 fps on a normal setup.

so:

1) m140 will probably be higher than 400
2) short AK type
3) I suggest changing the motor for a high torque (Will alkso give you faster responfd on semi automatic.
4)Don't see the need to switch gear if you plan to use it in semi automatic only.

Will you be doing the upgrading yourself? I mean, if you can't even read the spring guide, this might be something you'd want to out source.

This is a good setup I agree, also if its leaking air make sure your O-ring on your airseal is lubed and no knicks on it

Also DO NOT OVERLOOK the proper shimming, a good shim job is well worth it, I busted my internals in my TM twice and now its finally working again so TM gearboxes are extra friendly for the first time tinkerer

Also its well worth it to learn how to tinker your gun yourself, yes it will be costly at first (breaking parts) but after that you will learn from your mistakes you will never need a gun doc

Correct me if I'm wrong, but I'm dead sure the Marui M14 uses the short pinion motor.
Guarder offers a steel cut off lever for semi auto.
I find that the finish on the Guarder steel gears wear down the OE cut off lever prematurely.

1) What would an M140 spring give me in the way of FPS? (Please don't give me the link to the spring chart because I don't understand it)
M140 is too hot for Op-For and BCAC
2) What kind of motor does the M14 use? a short one or a long one?
Short
3) I need a High Torque motor with a stronger spring?
Not necessary
4) With an upgrade to the spring and motor, I should upgrade the gears and the bushings and stuff or will it not matter as I am not looking for speed?
Tightbore for accuracy, metal bushing, super torque up gears, spring guide, seal nozzle and Mosfet

I have done a few upgrade on my G36 but anything involving the mechbox I will give to my friend, he is really the only person I trust with my guns.

What does a Mosfet do?

And so i would be looking for an M120 spring then? I want it to be 400fps.

Modify S100+ (just below 400, usually around 370) or M120/S110 (just above 400 at around 420) will be the spring you want.

Thanks for the input guys... I will be looking at parts for the upgrade and maybe I post them up here and get some more feedback on what i picked.

My bad, thats right, the M14 does use a short type motor.

Ok so this is what I have... Since I only use it on semi auto, and it is brand new I wont worry about the gears and stuff just yet.

-Prometheus EG Barrel 500mm for Marui M14
-Systema Taper Spring M120
-Systema Magnum Motor (Short)
-Systema Spring Guide with Bearing VER III

Tm mechbox is a v7 and if you have only minor exp with upgrades.. this really isnt the gun to do yourself V7s are scary... im afraid to touch myn!

New or not, gears are something you should be looking at, I recommend High Torque gears from Modify.

Firerat. PM Switch from Op-For and have a chat with him about M14. No BS his M14 is one of the best out there.

I actually find Marui Version 7s the easiest. The electronics are all external and once they are removed, all you are left with is the mechanics of the mechbox only. The Tappet Plate spring can be installed after the case halves have been assembled as well. The only real time consuming part is accessing the mechbox for the M14.

+1

Very easy gearbox to work whit for a first timer. Just remember to take the time to take picture or draw diagrams of how things are places before removing them.

Another tips. find a magnet and stick every scrw and spring on it, that way you wont loose any. Migth seem dumb, but it can really ruin an upgrade experience to spend an hour on your knew looking for that small f++king screw.

I wasn't really planning on doing it my self... lol I have someone I trust with my guns (The only person I really trust) I was gona ask him to do it. After watching him do it once I'll know what I'm doing and be able to do it later.

This is what I did to my TM M14 OD:

Guarder standard steel gears
Guarder steel cutoff lever
Guarder metal bearing spring guide
Guarder polycarb piston head (non bearing)
G&P polyacetal piston (white)
Systema piston O ring
Systema M120S spring
Systema metal bushings
Systema shims
Prometheus 6.03 x 500 mm barrel
Homemade 9/16" x 5/16" 12g piston weight
Extreme-Fire SW-S MOSFET switch
20A fuse upgrade
King Arms bolt release
G&P scope mount
UTG/Leapers 3-9x50 red/green illuminated reticle scope
Guarder M1907 type black leather sling
Every thing else is stock TM

It's muzzle velocity is 385fps with a .25g BB and 420fps with a .20g BB.

It rate of fire is 17bps with an 8.4v, 3300mah sub c large NiMh battery and 19bps with a 9.6v, 1700mah 4/5 sub c NiCad battery.

It can hit a man sized target, 9 hits out of 10 shots at 225 feet.

To date, I have 16,000 rounds through the gun.

I'm in the process of converting it to a sniper rifle. I'd like it to shoot at least 550 w/ .20g BB.
I'm putting in:

Madbull M150 spring
Guarder infinite torque motor
Prometheus double torque gears
Prometheus hard bucking (red)

My TM M14:
http://img519.imageshack.us/img519/5...2102403jw7.jpg

Whats the difference between M120S and M120 spring?
Whats a mosfet do lol

An M120S is a stainless steel version of Systema's M120 spring. It's supposed to be slightly harder.

A MOSFET is a Metal Oxide Semiconductor Field Effect Transistor. In an AEG, it gets wired between the battery and the trigger switch contacts. Instead of the current from the battery to the motor going through the trigger switch contacts, the current goes from the battery, through the MOSFET to the motor. The trigger switch uses a small current to turn the MOSFET on and off when you shoot your gun. It eliminates the arcing and wear on the trigger switch contacts making the electrical circuit much more reliable. It also generally gives a shorter physical path from the battery to the motor, increasing the electrical efficiency of your AEG.

For more info, see:
http://extreme-fire.com/

So a mosfet is a good investment?

Yes.

See:
http://extreme-fire.com/
I use their SW-S:
http://extreme-fire.com/SW-S.html