Lehner 1950/6 or Plettenberg BigMaxximum ? - RC-Monster Forums

danverz · **Lehner 1950/6 or Plettenberg BigMaxximum ? -** 06.04.2006, 09:25 AM

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

Serum · 06.04.2006, 09:51 AM

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.

danverz · 06.04.2006, 09:59 AM

Thanks for your answer.

Quote:

Originally Posted by Serum

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.

Yes, you are probably right.

Quote:

Originally Posted by Serum

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!?

The fact is I already have a Schulze Future 18.97.

Quote:

Originally Posted by Serum

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.

Just with 3S ? Interesting.

Quote:

Originally Posted by Serum

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.

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

Serum · 06.04.2006, 10:11 AM

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.

danverz · 10:21 AM

Quote:

Originally Posted by Serum

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.

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°.

Quote:

Originally Posted by Serum

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.

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

Serum · 06.04.2006, 10:29 AM

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.

Nick · 06.04.2006, 10:33 AM

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.

Serum · 06.04.2006, 10:37 AM

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.

danverz · 06.04.2006, 10:39 AM

Quote:

Originally Posted by Serum

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.

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

danverz · 06.04.2006, 10:41 AM

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

MetalMan · 06.04.2006, 10:43 AM

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.

danverz · 06.04.2006, 10:46 AM

Quote:

Originally Posted by MetalMan

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

Serum · 06.04.2006, 10:47 AM

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?

Serum · 06.04.2006, 10:50 AM

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.

danverz · 06.04.2006, 10:53 AM

Quote:

Originally Posted by Serum

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?

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