lehner 1950/6 on 14 cells?

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.

[suicideneil]

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.

[suicideneil]

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:

For y-connection the three dd solder joints with a soldering iron must be isolated and be bridged instead of its the three s-s-connections with tin solder. In y-connection the engine works, as if it would have the 1.73-fache number of turns. E.G.: Type 1920/10 D corresponds to about 1920/17 S. Basic interconnecting and the number of revolutions list correspond to the Dreieckschaltung(D D are bridged).

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.

[suicideneil]

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?

[suicideneil]

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.

[suicideneil]

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

[What's_nitro?]

Originally Posted by E-Maxx King

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?

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

[Hickoryhead]

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.

[ClodMaxx]

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.

[BrianG]

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.

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.

[ClodMaxx]

Originally Posted by BrianG

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.

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