High torque motor on G&P gearbox?

[413xrocks200]

Hello guys:

So I have a G&P m4 and I'm very happy with its ROF. Its trigger response is a little low for my liking however, and since I play CQB on semi only it is more of a issue than ROF.

Right now I'm running a 9.6V NiMh on a G&P m120 high speed motor. Inside I'm running a m110 spring which isin't heavy by any kind of means. What I'm thinking of doing is slapping on a high torque motor such as a G&G m140 to increase trigger response because from my understanding, HS = fast ROF on auto while HT = fast trigger responce on semi.

So my question is: Is the 9.4V too powerful for the spring + motor combo and cause fried trigger contacts (I'm not running a MOSFET)? As well, should I have to worry about overspinning or damage my gearbox with its current spring since the m140 motor is rated for a m140 spring? I just want to be absolutely sure since I am not very knowledgeable about this stuff and my tech skills are about 3/10.

Also, as a side question, since G&P guns are wired with nonstandard motor contacts (the screw ones rather than tabs, whatever those are called), are only G&P motors gonna work on it? what about say a SHS High Torque?

Anyways, please excuse my ignorance, any input appreciated

[Red Dot]

I'll comment however I'd rate myself at the same technical level as you so my opinion may not count for much.

I think you are in the right path for a HT motor instead of HS. You'll get the snappy response you are looking for without the issues that I found with a HS motor (overspin on weaker spring and a lot more heat from the motor).

I think the trigger contacts become an issue when running lipos so I believe you are clear in that regard.

That's all I can help with.

[Wrath144]

It's higher voltage that causes accelerated contact wear, not larger current draw. I can't recommend a G&P motor as an upgrade. They're overpriced and unreliable, in my experience. If you want a quicker trigger response with a minimal increase in rate of fire, you'll want something like a JG Blue (AKA Echo 1 High Torque) or SHS High Torque.
You'll probably also want to switch to lipo, as it's unlikely that a 9.6v NIMH can provide adequate current to get the most out of your new motor. A 7.4v 2000+ mah and 20+ C battery should suit your needs.
You'll also have to change the motor connectors to .110" female spade connectors in order to use the new motor. They are available in the automotive wiring section at Canadian Tire etc. Technically you can crimp them on after cutting off the old connectors and stripping the wire a bit, but you'll probably want at least a little bit of solder in there.

[lurkingknight]

SHS motors draw more power and run hotter... would rather recommend the JG blue or a lonex A1 or A2. Either would suit your needs but are a bit more expensive than the JG or SHS.

Not sure who in canada would stock them but AMP T5000 are also neo magnet motors they might be cheaper than lonex.

The G&P connectors just mount under the screws that keep the retainer plate for the brushes on the endbell.. you can undo the screws on any motor and put the contacts on that way, or you can just solder the standard spade connectors on.

[Stealth]

Originally Posted by lurkingknight

The G&P connectors just mount under the screws that keep the retainer plate for the brushes on the endbell.. you can undo the screws on any motor and put the contacts on that way, or you can just solder the standard spade connectors on.

But that horrible G&P wet noodle wiring though....

[lurkingknight]

well I'm assuming he doesn't want to rewire it, since most people want the minimal amount of work to do something. :P

[413xrocks200]

Originally Posted by Wrath144

I can't recommend a G&P motor as an upgrade. They're overpriced and unreliable, in my experience. If you want a quicker trigger response with a minimal increase in rate of fire, you'll want something like a JG Blue (AKA Echo 1 High Torque) or SHS High Torque.

Yeah, I have heard better things about JG/SHS/Lonex motors compared to G&P's. Thing is, are gp motors that bad? In other words, is it gonna give me a noticeable improvement in trigger response over the m120 at all (since I want soldering to be the approach only if the m140 dosent work, never know if I want to go back to the m120) or should I just skimp the m140 altogether?

Nonetheless, thanks for the reply!

Also, since you recommend the 7.4 lipo with SHS/JG HT motor, would the G&P stock gears handle the stress? I've heard some nastly things about gp stock gearset...

[ThunderCactus]

"high torque" and "high speed" motors are not adequately labeled. You can actually have both.
A high end motor with powerful magnets and an armature wound for speed will have both tons of torque and speed, but will draw more amperage.
Not that the G&P M120 has any torque to start with, but the primary disadvantage of running NiMH batteries is their lack of amperage, and in motors amperage=torque. If you don't have the amperage the motor needs, it will fall short of it's torque potential.
And yes, the G&P motors ARE that bad. Horrible in fact.

it's a balancing act of sorts, because torque will decrease as your maximum speed increases. To a point where if your motor instantly ramps up to only 20k rpm, it will produce a slower trigger response than a 35krpm motor. What makes a 35k rpm motor have more torque, is more powerful magnets. But the stronger the magnets, the more amperage the motor will draw, the more it will drain the battery.
Not all motors are made equal either, we used to tune up G&P motors and it wasnt uncommon to cut their draw down by 50-75% sometimes.

And the G&P gears can't handle the 9.6 nimh battery. It has nothing to do with batteries or rate of fire, their gear axles are just shit and that's that.