Any use for Lehner Basic XL motors? Rarely used...
 

I've been wondering why the Lehner Basic XL series motors have seemingly fallen out of use. Pretty much the current thinking is to go w/ a Feigao/Wanderer XL motor or go right to a Neu/LMT. The Basic series sits in the middle, and I don't see anyone using them anymore. Currently Mike only has one model even for sale (down from ~3 IIRC.) Why?

The big cons I can think of:

Too pricey for a "budget" motor ($160 vs $90 for Feigao)
1/8" shafts

How do these motors really stack up? I would think they are more eff than the Feigao motors, prob run cooler, but is it not enough to offset their nearly 2x price? Do these motors have a place in large scale conversions today?

They are probably more comparable to a Feigao "S" or "L" size-wise. And you can't forget the Mamba Max motors (which Mike doesn't even have listed in the store), which seem to work quite well for the price.

I ran a XL3100 in my E-Maxx and pushed it to over 50mph on only 12 cells. I will probably get a XXL motor to try out on my Evo V3.3.

You are one of the few I can recall using this motor here. What were your impressions? Looking at the specs on the Lehner site, it seems that the Xls put out quite a bit less torque than a 1940.

Considering the ease at which I pull the front wheels up w/ an 8XL, this may not be a bad thing (if looking at a 2400 or even 2000.) Main considerations would be heat generated of course, and 40+ mph on 4S.

On 4S, I would go with the 2400, but I would choose a XXL over the XL. The XL was a wheelie monster! It would nearly do a backflip from a standstill. A couple times it landed on the front bumper. Just a little more and it would have done one sitting still. :p It was a good motor, but ran kinda hot. That is only to be expected with the hot setup I was running...

Was just about to edit my post after looking up the XXLs. The XLs say max 1300W, which is a bit low for a MT. 2000W on the XXLs would be better. Only draw back would be the 4mm shaft, but not a gamekiller. Also, there seems be be a big gap from the 1800kv then to the 3000kv. They do look pretty promising tho.

I'm guessing you are looking at the 1800kv? Would think the 3000 may run a touch warm, maybe..

Promod once used one( I think the XL1600) in one of his Maxxes with success( 50+mph with 6s) and it got a bit hot, though.

I've got an XL2400, on 3S it runs like a champ.. one of the Lightest setups i know.

Too bad it get's relative hot..

I've often wondered about the XXL can Basic motors. I like the XXLs specs. I'm sure that it is at least as good as a Feigao, but should be better. Do all of the XXL motors come with the wires, rather than the plugs on the back?

Is the 1800kv rating under load?

Is this a hijack?

I'm really curious about these motors.

The XXL motors do unfortunately come with the wires instead of plugs, but its not biggy...The XXL's are rated under load as well.

I am going to try an XXL1800 in my Matrix buggy. Mike has one ordered for me, but knowing the speed of Lehners service lately, who knows when it will come in. I looked at the basic XXL as nice relatively light motor that should have more than enough power for a lighter weight 1/8 vehicle.

I tried a XL4200 on 3s once in a rustler. TONS of power for a truck that size. Wound up selling the motor on Ebay cuz I couldn't find a good application for it. I can see the XL2400 being a good motor for a 6-7 lb vehicle. Just a little to small for a maxx or 1/8.

Hopefully the XXL will fill that gap. I'll let you guys know how it does when I get it.

jhautz,

I'm glad that someone bit the bullet and has one coming. The 1800kv will be perfect for a 4S or even maybe a 5S setup. Anyway, what I am most curious about is whether the Basic will run significantlly cooler than the Feigaos? For me, the efficiency isn't really a direct issue. I like the performance of my 7 and 8XLs. What I don't like is the heat.

ditto

They don't use segmented magnets, so the partial load will get them as hot as a feigao/wanderer.

Serum, I don't think they will get as hot since they are more efficient.

And why is it they are more efficient?

Okay, I need a class about segmented rotors and prtial load.

What knowledge do you have to tell about them, Serum? seriously, I'm not joking here. I believe many people will find it helpful for them as well.

I'd like to know why segmented magnets are much effecient than the regular ones?

What is prtial load?

Also, what difference am I gonna see between a rotor that has more segmentations than one with fewer ones?

For example, the Kontronik motors all of them have only three segments in their rotors, while the highend Lehners have something like 12 segments.

I would imagine that an electric motor has a "sweet spot" wherein it is running at its maximum efficiency. In the case of our 1/8 scale conversions and the motors that lend themselves to that duty, the sweet spot would be somewhere between about 30K rpm and 35K rpm. When you are outside of that range, either because you are pushing the motor too hard, or because you are only using partial throttle, the motor doesn't run as efficiently as it does in its sweetspot.

I'd imagine that with a "good" motor, like a 19xx series Lehner, the motor runs at a higher percentage of its total efficiency when outside of the sweet spot than a less expensive (Feigao) motor does.

The above is what I'm gathering anyway. Am I way off?

As for the segmented magnets, I have no idea how those would affect anything. Perhaps a lesson from someone "in the know" would shed some light.

Yeah, that's about it.

Do a search for segmented or partial and some interesting topics will show up.