Plettenberg MAXXimum Motors

[Sigge]

Lot of talk about Lehner motors....
Plettenberg makes some awesome BL motors, and the MAXXimum motors looks good, too :-)

There are 3 different versions. Two of them has a built in fan.


They can handle 1000 resp 1800 W and are for 12-18 cells.
Max efficiency is 91%. But that is not the most impressive thing about these motors. The most impressive part is the fact that the efficiency is so high from low currents to high currents (eg from 33 - 70 A it is above 87%!!!).


http://w1.877.telia.com/~u87744638/Plettenberg/Maxximum.gif

Motor Measurements:

http://w1.877.telia.com/~u87744638/Plettenberg/HP220BIGMAXXimum.pdf


http://w1.877.telia.com/~u87744638/Plettenberg/HP220MAXXimum.pdf

[Sigge]

260/290 gr (with fan)
resp
355g

4-pole motors with a special rotor Kevlar protection thing for high rpms.

http://w1.877.telia.com/~u87744638/Plettenberg/Maxximum%20Drawing.gif

http://w1.877.telia.com/~u87744638/Plettenberg/Maxximum%20with%20Fanl.gif

http://w1.877.telia.com/~u87744638/Plettenberg/Bigmaxx%20Drawing.gif




Sigge

[Sigge]

Prices in Euros

MAXXimum 210,00
MAXXimum with fan 242,00
BigMAXXimum 299,00

[Eagle]

Yea I saw those a while ago, they look pretty nice, anyone ever try them?

[Mathieu]

Hi,

Thanks for the infos. What about some specs, like Kv's ???

[brooks93]

what about the orbits.. anyone got info on them

[Don Wollard]

Thx for this scoop, Sigge.

4 pole motors offer (generally) better mid range efficiencies so I suspect this is why Plett has enter the car market.

I looked at the prices. :(

[Kmot]

Those blue Plett's are very cool looking! And the reason they are called MAXX motors is because they are designed for the E-Maxx.

[Zippifried]

Very cool looking, and just think, if you buy 'em like that one in the middle, you can mill off the ends and make some cool tire treads if they nuke on 'ya!!! hahahaha (kidding)

Take Care,
Paul

[Kmot]

Paul, you aren't kidding! I noticed too how they look like typical chevron monster truck treads.

[Sigge]

Don -
the prices are OK ;)

Sorry about the US Dollar being so weak.

For me it is 25 % cheaper - nowadays comapred to LASAW2002 - to buy things from the US:D :D


Sigge

[Sigge]

Most car applications use about 10-50 Amps current, so these Pletts are superior to any similar sized 2-pole motor I have seen motor measurements on - efficiency the only parameter in mind. The rpms on these Pletts are really good!

For ex the similar sized Lehner motors do not have the high efficiency that these Pletts have. Lehner motors are very good (better) at much higher currents, though.

If I would need a car motor it will be a Plett for sure!
I do have some Lehners lying around to try as well.



Sigge

Originally posted by Don Wollard
Thx for this scoop, Sigge.

4 pole motors offer (generally) better mid range efficiencies so I suspect this is why Plett has enter the car market.

I looked at the prices. :(

[Sigge]

The Kv for these motors at max efficiency is:

The smaller MAXX Motor has 2950 rpm / Volt
and the BIG MAXX has 2150 rpm / Volt.

Pretty amazing thinking that these motors are 4-pole motors!!!


Sigge


Originally posted by Mathieu
Hi,

Thanks for the infos. What about some specs, like Kv's ???

[Mathieu]

Thanks for the input Sigge.

[Eagle]

Wow those are some rather impressive numbers. The question becomes can they that the amps.....?

[Don Wollard]

Originally posted by Sigge
For ex the similar sized Lehner motors do not have the high efficiency that these Pletts have. Lehner motors are very good (better) at much higher currents, though.

4 pole motors can easily be developed to produce higher KV's and torque. Plettenberg is a natural leader and perhaps the most experianced for such a 'key' development with a 4 pole motor.

It would be great to see how these motors hold up to some real tough Emaxx type action. You know; heat, mud, sand, a mud puddle or two:D and so forth.

[Sigge]

Well,
one cannot have both high rpms and high torque just because it is a 4-pole or 12-pole motor
as

power ~ rpm * torque

If you want more power, ie more torque at a given rpm or more rpm at a given torque value, you need a bigger motor.

It is a matter of finding the best motor for ones application. Sometimes a 12-pole motor is better,
sometimes a 2-pole motor is better for ones application.



Sigge

Originally posted by Don Wollard
4 pole motors can easily be developed to produce higher KV's and torque. Plettenberg is a natural leader and perhaps the most experianced for such a 'key' development with a 4 pole motor.

It would be great to see how these motors hold up to some real tough Emaxx type action. You know; heat, mud, sand, a mud puddle or two:D and so forth.

[Eagle]

Yea that true, some real world data would be great though. Im not sure those cans would work great for boat, theres no way to cool em, not that they really need it but it never hurts.

Btw, in gerneral, in an application where more torque was need you would go four pole, and in an application where more rpms were needed you would go 2 pole right?

[Sigge]

Yes,
in general.

BUT, I have been studing some torque data for 2- and 4-pole motors, and if they have about the same Kv, the torque at any given current and having about the same weight of the motor,
the torque IS identical!

No surprise actually as

Torque = Power / rpm

There is no magical way to get more torque without sacrificing anything else.
This is pure science, and the math rules.


Sigge