Lehner 1950/6 or Plettenberg BigMaxximum ?
 

Hi,
I'm really new on this very interesting forum, and I already have a question
for you.
I'm going to think about a brushless E-maxx and I understand theese are
the 2 more ballistic products I can use on it.
But I don't find any direct review of both to understand wich one I should buy.
I will run it with 5S or 6S lipo's.

What do you think about that ?

Thanks,
Daniele

1950/6 is too hot for 6S lipo imo. my wanderer/feigao 7XL preforms the same as a bigmaxximum, only being smoother (the wanderer is smoother) the schulze conrollers are quite harsh compared to the quark or the MGM. In your choice of the motor; it's wiser to take a lower KV rating. a 1950/8 or 9 would make more sence on 6S lipo.

I wouldn't take the bigmaxximum, i like the Lehners, and besides, with a lehner (2pole) you don't need a schulze controller. you can take a quark 125, MGM or BK. The bigmaxximums look good, but you don't want a BL setup, just for the looks, right!?

if you are looking for a mean and nimble racer, with incredible acceleration, you might even consider the 1930. it will spin up faster than a bigger/larger rotor. I currently have got a basic XL in one of my maxxes, (XL2400) and on 3S lipo, it weights 3.2 kg and it really jumps off when it comes to acceleration.

For lipo's you might consider getting the new formulation of the flightpowers. Daniel (dafni) has got them too. With the maxxamps lipo's he had nothing but trouble, and with these flightpowers, it's untamable.

Thanks for your answer.
Yes, you are probably right.

The fact is I already have a Schulze Future 18.97.

Just with 3S ? Interesting.

Probably I will buy some flightpower EVO 20C. They will surclass my thunder Power 15C.

My fear is that the Lehner will be less flexible than the pltty about the input
voltage. I think the pletty will run all right from 4S to 6S. The Lenher seems
to me to be all right only with the really right voltage.
Is this just an impression ?

So:
pletty: 0
lehner: 1

Ciao,
Daniele

Well, my word of advice to you is to sell the 18.97 and get a quark 125. i can give you a few pictures of burned down schulzes that are too embarrassing to see.. it's even more embarrissing that their service is lightyears behind the service of Quark or MGM. of allmost all the stories i've heard/read about schulze, it's always and ever the customer that is blaimed for the smoked speedo's.

You are wrong on the motors; with a 1930/40/50 non high amp, you can resolder the rear end to give it a star configuration, you put some windings in serie in stead of parallel. That way you have two motors (in terms of KV value) instead of one.

The lehner motors are very good. consider this; the bigmaxximum i had, was getting hot, even with the built in fan. The 1950 on Dafni's buggy and revo, where relative cool, without any fan. the difference between moving air and not moving air is huge, so the bigmaxximum isn't all that when it comes to efficiency.

Lehner motors are easier on your controller too.

My basic XL, which is not a higher end Lehner, does fine on 3S lipo, 12 cells, 14 cells and even 16 cells. Just gear it with sence and your motor will thank you for it.

The segmented magnets, as used on the Lehners will make them get less hot on partitial load.

Well if you want I have another Schulze story ...
I fried up 2 UForce 75. Same story, bad connectors, bad gearing, bad
solder joints ...
Just one went into warranty.
It's not easy to sell this ESC. I had it used for about 200 euros.
Mike told me he is very happy with the Quark, but I was wondering about
its heat dissipation, it's a closed design. Very difficult to keep mosfets
into their specification: remember that it handles 125 Amperes only at 25C°.

Fine this is going to convince me. I fear the heat on my models, always the
reason of my problems.

Thanks a lot Serum for your answer.
Ciao,
Daniele

You are welcome Danielle.

Welcome to the forum bytheway.

As you can see, they are honest enough to give the temperature.. their power reserve is quite impressive.

And remember that 125A is continues. i personally like their closed design.

You might consider the MGM 16160 or the 24160 too. they are build nice. my only dislike is that they use 3.5mm plugs, which is pathetic on a 160A controller. i just got their new software version type from Mike, haven't hooked it up yet, but Mike says it's buttersmooth and they got rid of the weird braking problem. but on the other hand; a 9920/12020 is nice too.

The Pletts are abit out dated now. They are good but for the money, you can get much better quality Lehners. Like Serum said, even some of the less expensive Motors perform aswell as a Plett now.

Nah, it's not that they are outdated, the Lehners are even older if i remember correctly.

there are simple more and cheaper players on the market that take a controller that is made by a company that takes a stand for their products.

You will be able to sell that 18.97 with ease Danverz. No worries.

Well, I have some reservation about BK, I have seen on this and other forums
they are a little bit delicate. But I like a lot the idea to program it with
the computer.
MGM Compro are surely good, but also expensive :)
The Quark seems to me to be an adeguate choice if, as you told me, it is
a reliable controller.

So, for a fully alluminium emaxx (quite heavy I think) I should consider
the Quark 125 and the Lehner 1950/8 or /9 to run with 5 or 6S lipo.

Thank you Serum,
have a good day (night?) :)
Ciao,
Daniele

When the time to buy will come, if I will not have selled it, I will
try to ask to Mike if he can change my used Schulze with a new Quark.
Or maybe he will know some pletty lovers :)

Thanks again,
Ciao,
Daniele

Serum, Schulze controllers aren't the only ones that can run 4pole motors. MGM controllers are supposed to, I've heard Mtroniks do (but only up to 12 cells), and the Quarks should be able to also (I've not heard otherwise).

If you are comparing MGM to BK, BK doesn't stand a chance (IMO), especially if they got rid of the bad breaking problem.

The Quark 125amp controller is capable of something like 300amp surges. It's built on a very robust design.

I told some times ago with Frank, a Sky-technologies guy, about using a
quark 80 with a plettenberg shadow 4 poles motor. He told me that it's all
right to handle that motor.
Just to make you know.

Ciao,
Daniele

No, Day that is. It's 16.41 here. Not that bad... :)

hundreds of the BK's have been sold, and i never heard a really bad thing like you hear from schulze. delicate.. Well, gear it with sence.. and if you add a cooler (which is a nice thing in allmost all situations) you can't go wrong.

5S is more than enough on these motors. the 1950/8 would be a good choice then. You can run 6S thru it as well. but that's pretty freaking fast.. for an every day racing machine, that is durable and rather easy on the controller, the 1950/8 on 5S is a wise choice.

What upgrades are on your maxx if i may ask?

metalman; the bigmaxximum and the maxximum are different from standard 4 pole motors. they have got this HUGE magnetic resistance, (for the bigmaxximum it's allmost imposible to turn the shaft by hand) normal 4 poles don't have this resistance.. that's what makes it hard to get them on a non schulze controller.

perhaps the shadow is different in this magnetic resistance, i don't know.

This resisance is causing a rather harsh startup with my bigmaxx.

Not buyed (buyed ? Is it right ? sorry for my poor english) yet.
I have some mail with Mike with some suggestion. Very hard to decide.
Anyway I have a quite good budget: I think around 1200 euros.
Do you have any suggestions ? I am new about monsters.
I run with 1/10 brushless cars.

Ciao !
Daniele

FLM bulkess with ue 8 spiders would be nice. and some UE CVD's stay away from rdlogic shafts.. Mips are okay too.

Well, to go on.. is this your budget for the entire car with electronics, charger and lipo's?

To move the shadow by hands I have to hurt my fingers.
It has the stronger magnet I ever had.

Ciao,
Daniele

I have RDLogics and it was a mistake, my suspension arms have to be horizontal low as the shafts are too short. Any higher and they pop out every run.

In my own opinion with drivetrain, I've started to buy the best or don't buy it at all. The top stuff is almost indestructable to what most people run.

I already have the charger and balancers, and I have the Schulze I should sell at this point.
I also have the external BEC, it's a medusaproducts potencia and it works fine.
I also have a pletty shadow to sell about 140 euros.
So the budget is for everything but controller, BEC, charger ...
IF I sell the motor and the controller I have about 1500 euros for everything
but lipos and bec.

But I also have to consider the f*****g italian douane. They probably will charge me 20% of VAT.

Ciao,
Daniele

WOW, lets be careful here...
Any 4-pole motor will have the same story. Plettenberg is a torque-king motor in its size. And with right controller it starts much easier then 2-pole, because it stops always in between poles, not in random position. With desing you can minimize pole-pulling-holding effect (braking) but only with outrunners you can eliminate it completely.

Plettenberg is a very nice motor, but doesn't have as broad RPM range, with high efficiency) as Lehner or BK 2-pole motors. But it does have a torque which most motors do not have, and 4-pole design mean twice more torque with comparison to the same wind 2-pole motor. So if you have a tranny which expand this range then it might be not that bad.

And ones it spins all the pole pulling-pushing is under control and doesn't affect anything.

Plettenberg at starluckrc cost around $210-235

Artur

P.S. Rene are you sure Wanderer is smoother then Plet?

And what do you think about outrunners ?

I have a Cyclon car 5000 and it's a really good and powerful motor for 1/10.
There are some models also more powerful for trucks.

Outrunners seems to me to be really plenty of torque.
Ciao,
Daniele

So let's try with 1200 euros without lipos chargers balancers and bec.

Thanks a lot Serum for your help.
Daniele

griffin;

4 poles normally don't have got this huge resistance, so i don't need to be too carefull.

and yes, i am very sure. I had them both, remember??

like i said, the bigmaxx had this nasty startup in compare to the 2pole feigao. the torque of the bigmaxximum isn't all that buddy! there was this calculation on here somewhere that showed a 8XL had both more torque AND was more efficient. and besides, i tried all differenent gearings with my bigmaxx and i wasn't that impressed. so i don't really know what torque this monster should have shown. Like i said, i tried all different things

I run a 1950 8t and love it. I run it on 6s lipo now. I ran it before from 14 to 20 cells nimh. I don't have a fan on it and it is great. To my understanding serum the mgm can run a 2 to 20 pole motor from the sheet in them. I don't know how the pletty will work with them.

Yeah leroy, i know. but i never read anyone who actually used the maxxmimum or bigmaxximum on another controller than the schulzes. they are hard in the startup, as i described earlier.

For example, this is really a dream, but I think my budget is too low
for it:

http://homepage.ntlworld.com/ryan.coombes/emaxx.htm

I'm just going to emaxx due to the 1/8 diffs, otherwise I wolud have considered the Revo as well.

Ciao,
Daniele

Ah, yes, Ryan's truck. Ryan is a great guy. I pm-ed you.

I remember Ryan considered changing motors ages ago. I don't think he did though. He was considering using 22mA cells too, as Lipos weren't really about and he wanted to lose some weight.

I replied :)

Yea, I do.
But my plett matted to MGM ESC and it is a sweet combo. And, yes we did compare plett with XL motors and there I said that it is not fair to compare them size wise.
I do not want to go into details, just want to bring some good points about plett.
Which standard 4-pole motor you have in mind? Not the ones with skewed armature I hope :)

So far my complain on Plettenberg motor is that it is too hard on pinions and spur gears. But thats true for any high-torque application with poor gear mesh.

Artur

In you comparison you use a pletty maxx not the bigmaxx one.
I think there's a lot of difference, about 800 watts.

Ciao,
Daniele

Here is Ryan discussing about a new motor over the Plett:
http://www.rc-monster.com/forum/show...p?t=577&page=2

Might help...

Yes, you right.
"I have Big Maxximum with Fan." - ignore this!
800W is huge difference, do you have exact numbers?

Artur

You can find them here:
http://www.plettenberg-motoren.com/U...MAXX/Masse.htm

Compared: Maxximum without and with fun 1000 watts
BigMaxximum 1800 watts

Ciao,
Daniele

Then I do have BigMaximum. You good, confuse me for sure :) Somebody mentioned 455g for BigMaximum while it is 355g that is why I was wondering which one is and how it can be one-to-one to Lehner 22-series...

And I am wrong about Starluck RC prices... he doesn't have BigMaximum then

Artur

Edited...

Had a chance to touch Lehner 2230 and with weight of 380g - I will vote for Lehner here...