Lehner Power Ratings Help

[zeropointbug]

It would also only draw so much current, no just current handling.

I think if you want some nice power ratings, then check out Lehner's motor power examples page. Quite a few power setups, most of their winds, most voltage setups, etc.

They have one page their where the 3060 motor is putting out 15,000 watts @ something like 94%, and peak efficiency is 95% somewhere around 10,000 watts. CRAZY.

I am going to be getting their 3080 motor for a project of mine soon, probably a 3080/20 turn at 52.8 volts.

[BrianG]

Your 3080 project sounds like it would be for some type of personal conveyance, such as a bike or something. I thought about experimenting with things like that, but my disposable income is not that high...

[squeeforever]

Brian, must have seen where he posted what he was gonna do with it, no?

[BrianG]

I guess not... :dft001:

[zeropointbug]

Brian, have you heard about the Segway 'concept centaur'? :eek:

I am waiting for a reply back from Lehner email... to see if it has enough 'mass' to the motor to power it(duty cycle). But seeing as it's so efficient, it should be no prob with water cooling.

I plan on using A123 batts for a 52.8volts, with 23Ah cap (16s10p). But i asked them if they knew of a higher voltage controller (Jazz Power 63v) that I could use with say ~100 volts. The whole thing should weight between 100 - 120 lbs, maybe more. I want to use maybe 8,000 watts from the 3080, again maybe more. :005:

It's a fairly simple build I think...

[squeeforever]

160 A123's!? You plan on building a custom pack yourself? If so, thats gonna be alot of soldering. :eek:

[BrianG]

ZPB: Yeah, I saw that a while back. I figured your project would be something like that. My project wouldn't be that extensive (having the gyros so it controls somewhat like the segway); just BL drive. I figure a mountain bike or something along those lines would be good too, and light.

Squee: And can you imagine the balancer harness?! :dft002: :005:

[zeropointbug]

Originally Posted by squeeforever

160 A123's!? You plan on building a custom pack yourself? If so, thats gonna be alot of soldering. :eek:

Yup, and that's an undertaking I'm willing to take... :027: :002: What have I got myself into...

Brian, my build of the centaur is a much simpler version than Segway's, mine will NOT have gyros and such, and indeed 6? CPU's?

Also, I plan to use internal BMS (battery managment system), you don't use external balancer connectors.... LOL, imagine that, 16 cell balancer connector.

Anyways, it is a 27,600 watt (true) continuous pack, with voltage droop (2.5v/cell), and 30C cont. factored in. :018:

It will be something! Hopefully it can wheelie on demand! :017:

Cheers

[BrianG]

What do you plan to use for a controller?

[squeeforever]

I think he is gonna use the Jazz 63V.

[zeropointbug]

Yes, either the Jazz Power 63v (which is very well built BTW), or I'm going to use dual 2500 watt hub motors meant for electric moped (scooter). That will get rid of gearbox, cleaner setup, and the controller might be more durable, and up for the challenge. I'll see... should be pretty cool though.

[Serum]

I know i talked you into that esc; But it has got no proportional brake, and i think these are a must on these gyro controlled things..

[zeropointbug]

no no, I'm not using any gyro controlling, i said that in a previous post. Really, how would I even go about doing that?! :032: :030: :024:

Yah, was it you Serum that mentioned this esc? I definatly won't be using motor breaking, i'll be using high end mountain bike disc brakes, very powerful, and precise.

I would like to use the Jazz Power in my next brushless setup, and run like 12s LiPo or something, with a 20+ turn 1940/50. That would be cool... literally

[GriffinRU]

Originally Posted by BrianG

Maybe the power rating is how much the motor can dissipate and the current is the continuous amperage of the wires themselves?

Or maybe someone simply got carried away with the cut-n-paste feature. :)

You're right though, if those figures mean what they say, each motor has a resistance of 0.56ohms. To get 50A and 1400w, you'd need 28v...

BrianG, You were correct with your first statement. No need for second.

It would be incorrect to report max current at max. power.
Maximum Power and Maximum Current do not exist at the same time!

Check my program and lots of things will become clear...

[zeropointbug]

holy crap the 7Xl has crappy efficiency... :mad:1

I does put things into perspective, comparing a 1940 with 94+% peak eff., and 92% peak power eff.

I'm afraid to fire up my 7Xl now.... I still don't have my truck built (parts arrive mid-this-week)