I was talking about the rpm rather than tpa of the jg blue, 18k as opposed to the 22k of the asg. Both being 22 tpa, would that mean that torque is the same but asg is just a smidge quicker?
Basically I want to try and achieve as close to a nice round 20rps and thought pairing the 22k asg and 12:1 might get this with 7.4?
I would also like it to cycle efficiently with no ab or pre cock? Is this likely?
I'm planning a higher speed build in another gun using the rocket ht and more sacrificable parts after I've nailed this build.
The 18k rpm motors tend to be 27 tpa.
22 tpa motors tend to be 22k rpm
18/19 tpa tend be about 25k rpm.
16 tpa tend to be about 30k rpm.
All of a sudden the 14 tpa motors tend to shoot up to 40k
You can't quite lock all the same tpa motors in one speed rating,
coz the swg or single wire gauge of enameled wire used varies
in the windings on the armature etc...
Some makes will use a slightly thicker/thinner gauge wire
Plus the strength of the magnets and how precise the motor is built
Higher end motors are soldered onto armature contacts and balanced
Most China motors are simply crimped (after stripping away enamel)
Some say the same motor with neodym magnets run slightly slower,
than ferrite on NO LOAD as there is a stronger field,
this may be true - but very slightly 500-1,000rpm on NO LOAD,
under load this disappears as the ferrite motor is susceptible to load more.
So in general mild use the motors is rpm terms perform about the same.
When you start pushing it then you can use a GOOD ferrite motor,
if you are on a budget and you shim well and ensure the box runs efficiently.
Though often it is wise to use a good motor if you can run to it...
Hence me commenting on all those higher end bits & you used a JG motor.
The JG is a decent stock motor, has a bit more zest than say a G&G 18k,
certainly more than an even cheaper stock China motor in cheapo gun.
It works, you up to what 17rps maybe on 7.4v 13:1 on a 22tpa
That is about right for the motor as I said...
It is about a 22,000 rpm motor, some 22tpa's might get to 24k,
if wound with a slightly thicker wire, some might be 20k with thinner wire.
The ASG is about same spec but has more torque due to neodym magnets,
(and higher build quality).
The SHS / Rocket is a 16 tpa China motor crimped but with neodym,
to produce 28k to 30k tops.
The Neodym motors will have better response from still as the torque is greater,
they start to turn under load almost instantly due to stronger neodym magnets,
that a minor slower start with ferrite magnets.
That is not to say ferrites are useless, they may stall if you try to pull m120/130,
definitely stall on 7.4v but on 11.1v it gives the struggling motor a kick up the arse.
You can use a ferrite on 7.4v mildly tweaked gun if done right,
as if it is done well will be no more strain than so-so shimmed stock gun.
The JG is about same Speed as the ASG, but ASG has a lot more torque/response.
You can use either of those motors you got, choose one that gives the result you seek.
Build another gun, try to plan & experiment to attain results you want in 2nd gun,
then with what you learned apply to this first gun to see if you can do the same.
The ASG with 12:1 will be just under 20rps,
The SHS with 13:1 will be a little over it...
That is how I would pair it up,
If OCD kicks in, plan the ASG 12:1 setup for a gun where you can fit/use say bigger 30c.
(Give it a whisker more zest perhaps).
The SHS 13:1 in a gun with less space to use a 20c 25c 1500mah.
Then they should in "theory" perform a little closer to each other,
leaving you to decide which is the slightly better of the two.
But both will be pretty snappy builds & tbh once you nudge 20rps,
A couple of rps is hardly noticeable.
Where as 12rps & you gain 2 extra rps - is more noticeable,
On say 30rps going to 32 or even 33 it's fuck all,
as you get into twenties, the odd round or two is negligible,
it is more a case of how well it runs than if it fires a round or two faster
maybe it wasn't! 
