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Which Motor Can Replace This?


Drevil
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Hello guys. 

 

I Hope My question Will be propper and understandable, but I am New and dont know much yet. Bare with me. 

 

I found My old airsoft, marui g3a3. It has taken a beating, but I would like to restore it. There are however 2 main problems. 

 

The bottom of the pistolgrip got lose, and the gears started to grind due to a not fully pushed in motor.

 

So the motors gear is wrecked, and the pistolgrips bottom has broken screws. 

Marui Part No.G-4BLK (Pistol Grip) For Marui G3 Series (Black)

 

The pistolgrip doesnt seem to be in stock anywhere. I can find newer versions, but doubt they fit. 

So i guess we have to make a fix somehow. I would print it if i could find it. 

 

The second part is the motor. It has No info on speed or power. I would like to replace it, but dont know with what. 

 

Any info or suggestion iswelcome. 

 

Thanks in advance. 

 

Peter 

 

 

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The LCT pistol grip might fit, At £15 it's worth a gamble since it's a UK shop selling it.

https://www.fire-support.co.uk/product/lct-lc008-lc-3-pistol-grip-black

 

As for the motor. You can pretty much pick what you want within reason.

If you want a cheap all round one then the AK2M4 16 or 22tpa would be reasonable. 16 been faster but if you are running 11.1v lipo's I'd probably go 22tpa.

 

https://www.ak2m4.co.uk/internal-parts/motors-parts/gp-16tpa-motor-long

https://www.ak2m4.co.uk/internal-parts/motors-parts/gp-22tpa-motor-long
 

The motor is also a D type pinion, So you could just pick up the pinion gear.

https://www.ak2m4.co.uk/internal-parts/motors-parts/shs-ra-motor-pinion-gear-d-shaped-mim

 

 

You will have to inspect the rest of the gears to make sure there is no damage.

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As a pistol grip fix I would try this: (got nothing to loose)

- Scratch up the area of the screw mounts with a knife or rough sand/glass paper.  (The better you do this the better chance it  will hold)

- Thoroughly clean and de-grease it.

- Coat the screws with thin layer of grease and screw into the holes a little way just so they hold. (not all the way in)

- Using small strips of kitchen towel soaked in super glue, apply layers to broken area like paper machee around the exposed screw until it looks strong enough (probably 6-10 layers?).  The strips should be long enough to go around the screw mount and onto the flat area either side.

- Allow to dry thoroughly

 

As for motor, as Iceni said, its a common motor type. (AK2M4 sells quality stuff so that's  a good bet)

Just look for LONG type motors and get the one you like.

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Some things I would add to any shopping list if the gun has been sat a while.

Hop rubber - £10
M90 - M100 main spring - £5
Piston O-ring. - £2

AK2M4 has you covered here.

https://www.ak2m4.co.uk/internal-parts/hop-up-buckings-nubs/laylax-prometheus-bucking-purple

 

https://www.ak2m4.co.uk/internal-parts/springs/zci-aeg-spring-m90

 

https://www.ak2m4.co.uk/internal-parts/pistons-heads/piston-head-o-ring-viton-19mm

 

 

It just means you have the best chance of getting the gun up to spec whilst it's in bits. for the sake of spending under £20 it's well worth the extra spent. 

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4 hours ago, EDcase said:

As a pistol grip fix I would try this: (got nothing to loose)

- Scratch up the area of the screw mounts with a knife or rough sand/glass paper.  (The better you do this the better chance it  will hold)

- Thoroughly clean and de-grease it.

- Coat the screws with thin layer of grease and screw into the holes a little way just so they hold. (not all the way in)

- Using small strips of kitchen towel soaked in super glue, apply layers to broken area like paper machee around the exposed screw until it looks strong enough (probably 6-10 layers?).  The strips should be long enough to go around the screw mount and onto the flat area either side.

- Allow to dry thoroughly

 

I did something like this for a customers gun a few years back, it's still holding nice and strong.  I filled the screw holes with JB Weld and then when semi-dry screwed in the screws, creating the thread

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Check the Systema pinion gear very closely - it might not be a D type...

 

They tend to use bespoke O type pinions with a grub screw in it - ffs Systema

 

The shaft on some armatures are O type but has a tiny area cut like the D to accept the grub screw

So a std D type pinion won't slide onto the O type shaft - FFS x 2 Systema WTF x 4

 

Getting one of them pinions is like looking for rocking horse shit & if you do locate one it won't be a few quid

 

https://www.amazon.co.uk/Motor-Pinion-Gear-Systema-Airsoft/dp/B011UMJG88

 

http://www.redwolfairsoft.com/redwolf/airsoft/Parts_Systema_PTW_Professional_Training_Weapon_Parts_Systema_Motor_Pinion_Gear_for_M16_and_Pinion_Gear_Screw_for_PTW.htm

 

now "some" might use a proper D type but pretty sure most Systema's use/used a bespoke O type with grub screw pinion

 

Systema Airsoft Motor Medium Type High Speed For PSG-1 | eBay

 

other Systema's...

 

Systema "A to Z" AEG Motor Released | [PT]Airsoft

 

or blue Systema's...

 

Systema Turbo Motor (Medium) for PSG-1/SG550/SG551 <font color ...

 

 

So check very closely the end of motor, I think it might be a O type with grub screw than regular D type grub screw

In which case the motor is likely wanked as it is....

(could maybe clean it up, trim the axle make a medium/short systema high speed motor with a O type pinion)

 

So likely look at new motor, the motor was likely a 35k ferrite, but there are a few revision of speed/turbo fast motors

(think red torquey/magnum's systema had neodym magnets - still fucking expensive Jap motors though, no longer stocked)

 

Might want the 16tpa motor to kinda match performance of a Systema High Speed

the same" high performance" label is applied to your motor & the blue turbo so fuck know which high speed systema this chart refers to exactly - assume a 30~35k motor perhaps, though probably a bit knackered...

 

Systema turbo vs systema magnum motor - Airsoft Ohio Forums

 

Old motor, some had shortage risks and fucking expensive, though windings soldered on to arm etc...

So a precision built motor, not cheap, slight shortage risk....

 

and a wanky bespoke pinion gear looks like a D but is in fact an O type with grub screw

(so you gotta buy Systema bespoke pinions of course - crafty sods)

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  • 2 weeks later...

Sitting Duck

Seriously, thank you. Thats so much help! I'm gunna order a replacement now. Fixed the bottom of the pistolgrip with a 3D printet solution. 
Should be up and running soon :) Will post result! 

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26 minutes ago, Archer said:

Drevil, if you need a spare G3 pistol grip please let me know. I have a few left from old projects which you are welcome to have.

I would love to buy one if possible! Since the 3D-print we are doing wont be pretty, at all, but only effective. 
Are they like the ones up top? Since there is a new version of them :)


I love the astetics of the gun, and would love to make it look like new :)

I am from Denmark though, so will gladly pay for shipping and more! 

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