Lehner 1930/8 in 1/8th buggy, first impressions (#%*@! rain)

[bdebde]

1/8th buggy used: My Sportwerks Mayhem Pro here

Other motors used in buggy: 7XL geared 14/46 (40 mph), 8XL geared 14/46 (35 mph)

First off, this motor isn't much to look at. When I got my first XL, I remember how heavy the box was that it shipped in, and it was the only thing in the box. Then opening it up and saying,"now that's a motor". When I got the 1930/8, the box seemed pretty light, and I had a couple gears and connectors with it. I opened it up, and it was nicely packaged. But, this thing is not much bigger than a Mamba motor, and not much heavier either.

Needless to say, looks can be deceiving! I geared this at 12/46 (37 mph) since it is a higher kv than the XL motors I was running. I only got to run it for about 15 min just before dark, but I am impressed! Speed seems about the same as the 7XL and the acceleration seems about the same as the 8XL! In fact, this is the first time that the acceleration seemed "out of control" (like MM 5700 on 3s in my MT2). It was even starting to lift the front end up under hard acceleration (never did that before). That could also have to do with the lighter weight or the Road Rages breaking in, as well as the motor. I did hard speed runs and full throttle starts (hard braking too) for the 15 min, and temps were 150 for motor (no heatsink) and 150 for Mamba (no fan). Of course it is too soon to get a feel for "real temps" without more running, but the XL motors would be about 170 - 180 under same hard running (with Monster heatsink). And Mamba would be about 160 - 170. Even low speeds were great, with excellent throttle control throughout the range. I could always go about walking pace or a bit slower with the XL motors, but this motor can even go at about a snails pace. And of course, not a spec of cogging!

All in all, this motor may prove to be more well balanced with the Mamba Max and the 5000 mah lipo (lipo also ran cooler). I am also hoping to see more run time; I was getting 20 min with the 7XL. Guess I should save the rest for when the #%*@! rain quits and I actually get some run time on it!

[BrianG]

Is it amazing what a high-quality motor can do? The Feigao/Wanderers are no slouches, but there is a reason why they are a fraction of the cost...

Bruce, I know what you mean. I recently got a Neu motor. I got the 1512 and when I first got it, my first impression was that it was short. Very short. I wired it up anyway and at first was disappointed with the performance, but it turned out that I have a mislabeled motor. Once I geared it for a ratio proper for what the motor actually was, the power was unbelieveable. It is amazing what a quality motor can do.

As for picking the front wheels up off of the ground, what settings are you using with the MM? I'm running no punch control with the highest start power setting and the lowest timing. When I ran the Neu in my buggy, I could pull the front wheels off of the ground just about at will. Getting the truck to pull the front wheels off of the ground was just as easy.

BTW, you should check out zeropointbug's thread about his fried Quark. The thread went off on a tangent and we began talking about experimenting with adding capacitors to our speed controllers. I added four caps to my MM and no matter how hard I run it (I am running a 1" fan) it doesn't get over 140 or so; and when I run it, it's on a track for 20 and 30 minutes at a time.

Good going with the Lehner. I'm going to have to pick one up to run with my MM escs. I'd really like a 1940, as a few have said that the 1930 runs hot in a truck.

[zeropointbug]

Well, it's starting to look like the MM is very well suited to the Lehner's, great combo. And with those temps and what you have said how it performs, it looks like it is a better combo than the Quark/Neu, for cheaper, and no esc modifications needed at all. :eek:

[bdebde]

Originally Posted by zeropointbug

Well, it's starting to look like the MM is very well suited to the Lehner's, great combo. And with those temps and what you have said how it performs, it looks like it is a better combo than the Quark/Neu, for cheaper, and no esc modifications needed at all. :eek:

Yeah, modding an ESC is what kept me away from the quark/neu combo.

And I did want a 1940, but couldn't find one, this may however work out better in the end.

I went back and forth for a long time debating over the Lehner/mm or Neu/Quark decision. I would have gone for the Lehner and MM, but by the time I knew what I needed and was ready to buy, the Lehners became very scarce.

Since I have 5 MM escs, I may just sell my Quark/Neu combo for the price of a Lehner 1940. I'm am now on my third Quark, and I had to do the cooling mod on it. I also have six additional caps on it and am running it with a 1/4" thick heatsink that is attached to my chassis. Even with all of this, it still doesn't run as cool as my MM does, which is just servo taped to a mount.

OK, I'm getting off on a tangent here.

I'm glad to here that the Lehner is running so well for you. You lucked out getting that.

[bdebde]

Originally Posted by AAngel

I went back and forth for a long time debating over the Lehner/mm or Neu/Quark decision. I would have gone for the Lehner and MM, but by the time I knew what I needed and was ready to buy, the Lehners became very scarce.

Since I have 5 MM escs, I may just sell my Quark/Neu combo for the price of a Lehner 1940. I'm am now on my third Quark, and I had to do the cooling mod on it. I also have six additional caps on it and am running it with a 1/4" thick heatsink that is attached to my chassis. Even with all of this, it still doesn't run as cool as my MM does, which is just servo taped to a mount.

OK, I'm getting off on a tangent here.

I'm glad to here that the Lehner is running so well for you. You lucked out getting that.

It was the last one Mike had, figured I better get it and give a try. Hope I get a break in the rain tomorrow to get some running in.

I may try the caps on the MM if it runs too hot (be nice to stay away from fans). You not using a fan on yours?

[Serum]

Yeah, the small motors are spinning up like nothing else; rather weird; i am impressed by the small motors. they seem to accelerate like nothing else if geared properly.

Viruss managed to get his 1930/8 run 50mph on 4S in his buggy.

I like the smaller motors too. They are almost like driving a hopped up small block, because they rev so quickly and are very responsive. I had forgotten how they feel because I went to the XL motors to try to get away from some of the heat that the L can motors generated.

Now that I got to run the Neu 1512, I'm reminded of how nice they are. My only concern is how well they will hold up during long races in terms of heat. When I was running my Neu (I believe it was a 1400kv motor) on 4S geared 16/44, I was able to get the temps up to 160 in a short period of time. That surprised and worried my. I had initially ordered a 1900kv motor and am waiting for Neu to correct the situation. When I get the 1900kv motor in, I'm going to give it a try and what happens.

[Serum]

Aangel; you got confirmed from Neu that the KV of that neu you had wasn't what it should be?

I am running a fan on mine, but...the last time I was out on the track, I was running the MM with four caps attached to it running a 9XL geared 14/46 in my 8ight truggy on 4S lipo. At some point during my running on the track, the fan on the esc got bashed in and it wasn't working. After running for 30 minutes, the motor temped at just over 200 and the esc was at 150. When just playing around the esc will get to about 135 without the fan. With the fan, it gets to less than 120. When running the fan and on the track (30 minute practice sessions) the temps get to about 135-140.

I don't know if my results will be typical, but for me adding the caps made a difference. I believe that others have had similar results, but your mileage may vary.

Serum, I still don't know. I may have misspoke in my post above. I should have made it clear that getting a mislabeled motor is what I suspected. Considering that the motor was running so well, it was the only conclusion that I could come to.

When I initially called Neu about it, I asked what the possibility was that I got a mislabed motor and the guy I spoke with responded with, "it's a possibility." Their labeling process consists of the guy who built the motor marking one of the motor leads with a marker. On my motor, it was marked 1512/1.5Y in very small writing. This first labeling is what is used to make the labels for the endbell and the box. If it is mismarked after being wound, the mistake will not be caught, except by the end user.

I was under the impression that Neu had some sort of QC in place that would catch this, but apparently they don't.

In any case, it was a nice motor. On the other hand, perhaps the high temps that I was getting was due to a defective motor. I am just patiently awaiting my Neu to come back so that I can try it out. I'm still leaning toward sticking with the MM and getting a Lehner, if I can find one.

[Serum]

Yeah, at your side of the sea the lehner motors are getting rare..

I wonder how long Neu needs to come up with a solution.. Thanks for being the test dummy..

Yeah, dummy is right. If I had any brains, I would have put all of this stuff aside long ago.

[Serum]

Yeah, we all should..

It would have released our lovely ladies from some stress.. :005: