Insides of a Plett (in case anyone is interested...)

[brushlessboy16]

....where the heck do you get kevlar string?

[kostaktinos_mt]

these are 4pole motors actually...
as mentioned above, slotted stator paired with a multi-pole rotor [armoured via kevlar shell] is the 'basic configuration' for plettenberg car motors...

10-15 degrees of advanced timing will lead to smoother start-ups and enhanced power [for this particular genre of motors]. when combined with a switching rate of 13-19khz, it will also yield the best possible efficiency.

the rotor diameter is 22mm if i recall correctly.

[TruckBasher]

Nice photo, thanks....

I also want to know where to get kevlar stirng and what is the best high temp epoxy to use...

kostaktinos_mt - is that a 5mm shaft? Sure looks bigger. Thanks for the pics, you can tekk how well engineered it is the build quality is obvious.

I want one of these to run my UE Lightning when I get it finished, but need a 5mm shaft since its going to be one of my heavier MTs, prob the heaviest.

[bdebde]

I always thought the Pletts were 4 pole, they even have P4 (poles 4?) in the part number. After running my big maxx on the MGM controller and looking at the peak rpm (when set for 4 pole), I get a max rpm of 78,000 on 6s (22.2 volts) in the software. If you convert that over for 6 pole, it would be 52,000 rpm. The big max is supposed to be 2300 kv, so 22.2 x 2300 = 51,060 rpm, which makes more sense and leads me to believe it IS actually a 6 pole motor.

[lutach]

Originally Posted by bdebde

I always thought the Pletts were 4 pole, they even have P4 (poles 4?) in the part number. After running my big maxx on the MGM controller and looking at the peak rpm (when set for 4 pole), I get a max rpm of 78,000 on 6s (22.2 volts) in the software. If you convert that over for 6 pole, it would be 52,000 rpm. The big max is supposed to be 2300 kv, so 22.2 x 2300 = 51,060 rpm, which makes more sense and leads me to believe it IS actually a 6 pole motor.

The ones that use the P4 are 4 pole motors. Most of the Plettys are 6 poles.

[brushlessboy16]

can some one tell me where to get kevlar string?

[sleebus.jones]

Originally Posted by lutach

Now days I'm getting more and more confusing as some companies say to run low timing to keep temps down. I always go mid or 5 degrees of timing for 4 pole motors and high or 10+ degrees for 6 pole motors.

Very interesting, because that's what I've always heard too:

Originally Posted by Bernie Wolfard

All Castle Creations speed controllers provide dynamic timing advance. This means the advance setting changes with speed and load on the motor to maximize the efficiency of the motor as all speeds. Changing the timing advance setting lowers or raises the range in which timing advance moves. The advance settings actually overlap quite a bit.

Generally, outrunner motors work best with high timing advance. However, one of the motor characteristics CC ESCS compensate for is motor inductance. The high inductance of outrunners pulls timing advance up. This means that for most medium to small outrunners 'Standard' timing advance works well. With these the only reason to lower timing is if the motor is running too hot or if it starts making noise above half throttle. The noise means the ESC is loosing sync with the motor.

With larger outrunners we recommend 'Low' timing advance. The larger the outrunner the higher its inductance. These larger motors inductance pulls our ‘Low’ timing advance up to the higher timing advance these motors want without having the advance get so high that the ESC can no longer sync the motor.

Hope this helps.

Bernie

And the followup:

Originally Posted by Bernie Wolfard

The difference between medium/small is somewhat subjective as different motors behave somewhat differently. When I wrote the above I was thinking about AXI motors where anything below the 4100 sized would be medium/small, 4100 and up would be large.

However, if you have a large 2800 series motor that makes noise over half throttle lower the advance. It is also a good idea, if you like to fiddle with things, is to change timing between 'Low' and 'Standard' and see if full throttle produces more or less RPM.

To make it easy, as long as the motor is behaving OK don't change timing. If it is making noise at higher throttle settings or running too hot lower timing.

Bernie

I realize this is about outrunners, and we've been discussing inrunners, but I'd like your thoughts/experience too.

I've only goofed with timing on a outrunner I've got. I never tried higher timing with it, because it got pretty darn warm just on normal, and changing to low (or lowest) didn't help at all. The motor I was trying was a Axial 600XL, now I'm wondering if higher timing might be worth a shot?

[Serum]

http://picasaweb.google.com/buikpijn/Bigmaxximum

and this is what a bigmaxximum looks like.

[lincpimp]

Originally Posted by Serum

http://picasaweb.google.com/buikpijn/Bigmaxximum

and this is what a bigmaxximum looks like.

OOOHHH!!!

I really would like to have a Big Maxx, Expecially considering how well the Maxx w/fan runs in my emaxx! I bet that 5s with the big maxx would be a handfull!

[TruckBasher]

I also want one one...but sadly its to pricey

Thanks for the picx

[Mister-T]

When you look inside it just like an industrial motor. It's made to last

[bdebde]

Originally Posted by lincpimp

OOOHHH!!!

I really would like to have a Big Maxx, Expecially considering how well the Maxx w/fan runs in my emaxx! I bet that 5s with the big maxx would be a handfull!

And 6s with a big maxx is more than a handful, he he

[bdebde]

Originally Posted by brushlessboy16

can some one tell me where to get kevlar string?

Google "kevlar thread"

[lincpimp]

Originally Posted by bdebde

And 6s with a big maxx is more than a handful, he he

Have you ran one on 6s? I bet that would be crazy...