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-   -   Lehner 2250/? - overkill? (https://www.rc-monster.com/forum/showthread.php?t=6351)

10kman 04.09.2007 03:00 PM

Lehner 2250/? - overkill?
 
Question for the experts,

I'm underway with my Brushless MGT conversion, and am deciding on powerplants. I'm going to be using the Quark Monster Pro ESC, and just need to decide on a motor.

I'm looking for all around specs, runtime, but with that on-demand power that will flip the truck onto its lid whenever I get a little wild.

My original choice was the Feigao 7XL, it sounds like it has done very well for many people on the forums. But, I'm willing to spend some more to get more.

I have experience with Lehner motors for the 1/10th scale cars, and I was very impressed. Got me to reading around, and I saw the 22xx series motors. While they are on the large side, they put out crazy wattage, which would be great.

I don't have experience with the larger motors though, and am wondering if they are just "too much" power, even for a large truck like the MGT. I was looking at the 2250 specs, and the 2000w output, with a 3000w surge is 2.7-4+ HP in nitro specs, which don't even exist in most trucks.

Would runtime stink to high heaven with a 2250/10 or 2250/12? I don't want to have to run more than 16 cells, or maybe 5s LiPo, just to go dink around. I'd probably have to run a very tall pinion on such a powerful motor.

Any ideas? Nevermind budget, I can save and live on Corn Flakes for a little bit. I also heard there's a great deal on some recalled pet food, I could go that route. :020:

Thanks,

10k

coolhandcountry 04.09.2007 03:20 PM

I would go a 2240 before a 2250. The 1950 is more than enough more to push a mgt around. I have a video of a mgt with center diff that will wheelie.
The 1950 8t on 6s lipo is great. Since you don't want that much. You could go a 1950 7t and 4s. 2250 10t just starts good one 6s lipo.

Serum 04.09.2007 03:25 PM

2250 makes no sense at all.

get a 1950 or a 2240.

I used the 2250 too, my advice is make a light truck, on 6S and use a 1940/1950. You wont know what hit you.. :)

power doesn't come from the motor, it comes from the batteries.

10kman 04.09.2007 03:59 PM

thanks....
 
Thanks for the advice so far.

From experience with Lehner's products before, it sounds like even the 19 series will be suffice.

What types of runtimes are you guys getting on the 19's? 20 minutes of hard driving would be great, if I could hit 30 while bashing, I'd be golden.

Sounds like I should budget for a bit more battery power too, if these things really come alive at 5s and above.

luvsrc 04.09.2007 06:32 PM

where to get lehner 1950 motors? Mike is out of stock and don't know where it will arrive?

BrianG 04.09.2007 07:02 PM

If you don't want to wait, the Neu motors are just as good. Just my $0.02...

coolhandcountry 04.09.2007 07:05 PM

I got mine from mike. On a 1950 8t with 4s lipo. It is not super fast. On 8000mah
packs from maxamps. I can run in the 60 min or so range.

coolhandcountry 04.09.2007 07:25 PM

Depends on esc he chooses to run or have brian.

jhautz 04.09.2007 07:32 PM

He said he was planning to use the Quark 125. Neu is just as good quality as Lehner, its a perfect match for the Quark and the bonus of no waiting. I own both Neu and Lehner and both are absolutley top notch. You wont be dispointed with either.

Oh and yes... a 22xx is overkill IMO. The 19xx and Neu 15xx is overkill, but in a good way.:D

10kman 04.09.2007 08:09 PM

I never looked at the Neu motors until just now, they seem pretty good to say the least.

Not sure on which kv to go with though. I'm thinking the middle one will give me the best of power and runtime. 2700 kv does sound tempting though. What is the max RPM range of those motors, 35000 or so like most other big cans?

BrianG 04.09.2007 08:10 PM

Quote:

Originally Posted by coolhandcountry
Depends on esc he chooses to run or have brian.

Yeah, but I saw he had a Quark so no problem there. It was just a suggestion if he didn't want to wait. Actually, the reason I got my 1512 was because Mike didn't have any 1940s in stock - and I do not regret the decision in the slightest...

luvsrc 04.09.2007 09:39 PM

Hi guys I just want to try the lehner 1950 8 turn in my 6s lipo running with my MGM 24 160 but is Lehner a 2 pole motor? Which is good if it is for I think I have the old MGM versions

jhautz 04.09.2007 09:55 PM

Quote:

Originally Posted by luvsrc
Hi guys I just want to try the lehner 1950 8 turn in my 6s lipo running with my MGM 24 160 but is Lehner a 2 pole motor? Which is good if it is for I think I have the old MGM versions

If you have the old MGM version, you want a 2 pole motor. The lehner or any of the feigao based motors will be fine.

AAngel 04.10.2007 01:11 AM

I have a converted MGT and I'm running it with an 8XL. It's plenty of motor for the truck and I'm only running 4S with a Mamba Max controller. It'll flip the truck on its lid and then bounce back onto its wheels. My son drives it up trees and does back flips off of them. I've you are going Lehner, the 1940/8 should be plenty for a 4S setup. If you go more cells, you can just go to larger motors with lower kv ratings. Personally, the 8XL on 4S is more than enough for a basher with huge tires on it. It only does around 25-30mph, but it gets there in the blink of an eye and almost nothing can stop it.

Serum 04.10.2007 01:39 AM

the 1950/8 is a blast on 6S.


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