lehner 1950/6 on 14 cells?
 

Would this run hot? Geared 40mph. Does anyone know where to get one? I would really like one.

I think you're good to go on temps with that setup. You may have to take a trip to Germany to buy one though, or get one from FD. Or better yet you could try a Neu, let's say a 1521/1.5D (1860kV).

isnt that to big? How the power of the 1950? How long are the cans? Man I wish I could get this, not the 8xl. Whats FD? And what is the difference from the hi-amp to the normal one? Are the 3.3 MIP CVDs strong enough for this kinda power?

FD = www.finedesignrc.com

There really isnt much difference between lehners & neus, only that lehners are very hard to find, where as neus are abit more plentiful in the US- but expensive. The cvds should be good to go, just do something to stop the pin from flying out.

On 12/14 cells I would say the 1515 1y or 1515 2.5d would be good, lots of other people report good results (anything in the 2000kv area is good really).

But I want to run a MM. And they dont have the 1950. Man I really wanted a 1950, Will the 1940/7 beat the 8xl or 7xl?

I'd just be worried about the batteries. A 1950 can pull a ton of current.


A 1940/7 would run circles around a Feigao XL motor. A 1940 would probably be better on NiMH, as it wouldn't strain the packs as much.

I have max amps WCE 4200 7 cell packs. Will this be enough power for me? Also on the diffs, what diff the HB Pro or just the HB diffs? Im getting them here so?? 51/20 with buggy diffs What do I cal. the gearing on? Full volts or load volts? 1.0v per cell or 1.4 per cell. Will it also get more runtime? Im planiing to get 4s or 5s packs in the future. 5k to 10k mah idk I read someone got 35mins of runtime on 4k packs. (1940/7) Will the 1940/7 pull to much current from the MM? What hinge pins and diff oil do i need?

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You ask too many questions :) The batteries should be treated like 1.0v per cell underload when doing your calculations. 1940 motor will be plenty, and you can can plumb in the different gear ratios / motor turns into the speed calculator to come up with some answers. Just remember that 40,000 rpms is the target motor speed, and 40mph is plenty of speed vehicle wise- adjust gearing/ voltage to match really.

Just saw his thread. The 1950/6 on 14 cells is a nice combo. My 100amp ESC got hot, but was fine. So did the batts, when I still had NiMH cells, now I use it on 4S (with a MM).
On 14 cells it's plenty fast, Serum can attest. Had it in my MBX5 once, with a 9920.

Well it looks like no one has the 1950 so I guess Ill have to get a 1940/7.

Actually there is a big difference between the nue and the lehner, the nue is much fatter and won't fit in most of my trucks and if they did gearing low would be very hard.

I run a 1950/6 in my BL 1/8 buggy. I love it!!!!!!!!!!
Ran it on 14 cells with BK 12020 Super FAst!! But, Heavy!!!
Running a pair A123 6.6v 13.2v Good combo A lot lighter and still quick as can be!! Depend on gearing. I'm running 16/46 or 18/46 Motor and esc are just warm.
The MM not sure if it would handle it. Go with lehner 1940..
hope this helps.

How did you get a 1950? How can I wire up the lehner to the mamba? (4mm connectors) I thought I can plug right into the back of the lehner?

How is a question of looking around ALOT until you find someone with them instock (rc boat places is a good bet). Wiring it up is simple enough, you may just have to direct wire it or change the plugs on the motor or esc so they both match in size, no biggie really.

Does anyone know the size on the back of the motor? 5.5mm? I just hope a 1940 will do the job with no problem. Dont want to waste $300 on a motor that will burn up, and it will be from FD! o no.

You're doomed already! I do believe the plugs on the back of those motors are all 5.5mm yes. There is no reason why it should burn up though unless its DOA, which is extremely rare with motors of that quality. Its just a shame that FD hasnt got the best of after sales service.

SO ill have to put 5.5mm male plugs on the esc? SO I ll need 3 males for the esc and 3 more to do the delta or wye setup? right? What way is the delta setup? star?? Im sorry for all the q, but Im learning.

Technically you could get away with using 3mm? connectors on the motor wires so they mate up with the MM without having to change its plugs, but I would recommend 5.5mm, or 4mm gold plugs. Changing them over is a piece of cake; if I can do it anyone can.

1. heat plug up unitl solder melts, remove existing plugs.

2. Stand 5.5mm plug on tis end, and heat it up.

3. Poke silver solder into it until it melts, and fill it up.

4. Keep iron in place, and poke wire into the plug& molten solder- remove iron.

5. Hold wire in place until solder hardens.

6. Cover exposed female connector with heat shrink, job done.

There is a good video on youtube that shows exactly how to do this, but its a very simple job.

As for the Star/Delta thing:

Slightly gibberish, but with the diagram in this link you get the idea:

http://www.lehner-motoren.com/downlo...schreibung.pdf

I get confussed when everyone says 3 or 5mm connectors when there 3.5 and 5.5. Any theres no wire on the back right? it just 5.5mm plugs on the back? And how would the 3.5mm fit in the bigger 5.5mm? I dont want to hard wire it if i dont have to. Easy for cleaning.

I can never remember the size of the plugs on the MM, but that isnt really important. I am fairly sure there arent any wires on the motor, so you have to solder on some 10 or 12 gauge wires, with the plugs on the opposite end. So long as the plugs on the esc & motor are the same size, thats the important thing. I still recommend changing them to 4mm or 5.5mm, so you will need 3 male & 3 female. Then you will be able to swap wires around and remove the motor for cleaning purposes with no hassle.

When I look at the pic on the lehner or FD site it shows 5 or 6 gold pugs sticking out from it. The one on FD isnt the hi-amp. The MM comes with 4mm plugs. So 5mm plugs are 2.50 for eack plug? Or for 3 males and 3 females?

Depending on where you buy from, its about $2 per single connector. However, you are in luck:

http://www.offshoreelectrics.com/pro...od=dh-gpmm3115

$1.89 for 3 female 4mm connectors which you need for the motor. Now the hard part- if the motor does have 6 poles sticking out the back, 3 of them you solder the wires to with the plug on the end, and the other 3 have to be joined to the first 3 poles like in the .pdf diagram using short lengths of wire- you should get a diagram with the motor, or you can always ask FD if they can do it for you; cant hurt to ask to save you some hassle. But if any of that sounds like too much, I would say look around abit more for a neu motor and just gear it down so that cogging isnt an issue with the MM, I sure some of the guys who ru this combo can recommend some programming settings that will help also.

I see the pics on FD, But I need to know what size those plugs are.

Unknown. You may have to email them to ask, or see if it says anything on the lehner website Im affraid.

If they show 6 plugs on the back of a 19xx then they have the wrong picture associated with that motor. Only the 30xx will have 6 plugs because they are simultaneously high-amp and delta/wye switchable. Judging from the scale of the 19xx pictures on the LMT website I would say they use 4mm connectors on the back

Emaxx- if you find a 1940 let me know. I have been looking for months and FD has not had one in stock even thought his website says he does.

i have the 1940/7 hi amp, paired with a MM esc. i have it connected using 5.5mm connectors. i had to cut the MM bullets off, and soldered the 5.5mm bullet end on instead. kind of overkill as the MM wires are only 13 gauge IIRC...that 5.5mm bullet is huge on a tiny wire. i used 3 short pieces of 10 gauge wire from the motor to the 5.5mm connector. also overkill as the system is only as good as the thinnest wire, but i did this in case i upgrade the esc in the future.

http://pic20.picturetrail.com/VOL127.../277309185.jpg

Choosing the gauge of a wire is determined by the current flow and the length. Since your wires are so short, 13GA is more than enough, but larger doesn't hurt. :smile:

BTW: I don't think you're gonna go very far the way it's currently set up since the pinion isn't even touching the spur. :wink:

heehee...that's why it won't go anywhere! :grrrrrr: :mdr: