P2K dyno numbers?

[tc3guy]

I just got the pro version and it says
RPM: 28,452
Power: 120.4 watts
Efficiency: 72.8%
Torq: 171 Nmm
Are these numbers good? The power seems pretty low compared to other P2K motors.

[TC3Racer]

yep those numbers are really good. most of them are better than the Green Machine 3 pro. Good choice on getting the P2K pro. its a great motor. you'll love it.

[tc3guy]

This is actually my second one. On my first one I tore off the dyno redings because i thought they looked ugly. But I did that at night when our power was out. So it was pretty dark and i didnt know what I was doing. What are your dyno readings?

[Matt Stepanian]

TC3Guy, how would you know the label with the dyno #'s were ugly if you were in the dark? That sopunds pretty odd to me. :confused:

[tc3guy]

It was late evening and there was a slight amount of light coming from outside. I had just eneough light to see what I was doing.

[Matt Stepanian]

Oh. Cool motors, though. I need to get me one. :rolleyes:

[Car_Head12]

hey heres my #'s

RPM : 30,839
Power: 125.0W
Eff.: 68.6%
Torq.: 173Nmm

[tc3guy]

Carhead,
Looks like you got a pretty good motor. Mine seems to be about average in everything.

[Grizzbob]

Yeah, judging from the numbers you posted, I'd say yours is in the middle of the ones I've seen. It should be a solid motor for you..... :)

[Car_Head12]

me or TC3guy? what brushes should use? i heard somewhere that the ones that came with the p2k were the "E-brushes?" ...

[Grizzbob]

I meant TC3guy's. I like the 4499 brushes ok(those are Trinity's "E" brush, normally thay come with the P2K Pro), but I think that Reedy's 767 brushes produce a little more power than 4499's, at the cost of them being a bit harder on the comm..... :)

[tc3guy]

Anybody else got any dyno numbers?

[Crazy Canuck]

Rpm 26591
Power 120 W
Efficiency 70%
Torque 164 Nmm

[outsider]

rpm 30114
122.2 watts
eff 68%
171nmm

[fumes]

rpm:27609
power:124.3w
eff:72.1%
torq:176nmm

[Isky]

If you shim your motor correctly, RPM and Torque should go up...considerably...
RPM: 28,203
POWER: 121.0W
EFF.: 66.2% (Super Low)
Torque: 170NMM

BTW, The GM3 matches a P2k's torque in high-rpm's. In lows, its laughable. I've heard on P2ks that have had 22,000 rpms...that should be considered a defect, lol...

[Grizzbob]

Close, but not quite right, Isky. The GM3 actually is quite a bit better in torque at high rpm then the P2K, that's why they work so much better at carrying speed through corners & are better on high speed tracks where you hardly ever slow down. But you're right that their low-rpm torque is quite low, pretty much identical to the older Yok based motors.... :)

[Aussie_Man]

How do you shim your motor? How much play is best required? Very litlle or somewhere like 3/32"?

[Grizzbob]

Honestly, most of us just do it feel, we don't measure a specific amount. The best way to shim it is to put the arm back into the can & finish reassembling the motor without any shims, & then spin the output shaft by hand. Then push & pull on it to see if there's much play. If you feel a good deal of play, then take the motor apart again & put one thin shim on the output shaft end of the arm, & reassemble again. Then repaet the spin & pull on it again, until there's just the tiniest bit of play(if there's no play at all, the motor will bind & performance will suffer). Then once that end of the arm is shimmed right, start on the endbell side of it. It can take quite some time, but it's definitely worth it, & after awhile, you may be able to guess just how many shims you need on the first try..... :)

[jeepinator]

Grizzbob, and others ...
What are these number generated with ?
In other words, what dyno are they using ?

Thanks

[1 Krazy Foo]

my "instructions" say they use a Robitronic Pro-Master Dyno

My specs are
RPM: 27.694
Power: 120.1W
Eff: 70%
Torq: 175Nmm

[ 07-09-2001: Message edited by: StrangeDesires ]