this i got from another thread.

http://www.rc-monster.com/forum/show...highlight=2240

Speed runs with the Lehner 2240/10 using 6s Kokams. Started out with 14/51. This gearing is used for bashing and runs stone cold. The speed was over 54 mph with temps not breaking 100. Using 16/51 gearing temps were around 125 and the best speed was 59.7 mph. The combo will run 60 mph plus easy

He said that he had a run time of 15 min,But i got a savage so??

you are talking about promods emaxx. if that is what you want then go for it. He has been running a 2240 12 t last i heard of on 10sor 8s. He is also running a center diff. a 9xl with center diff would run faster too.

I din't now a centerdiff would make a diffrence.
Than i can beter stay whit the 9XL.
because of the run time.
And it's les expensive:D

Coolhand what will be the beter controller for the 9XL on 20 cells
9920 or 12020

You said: I can not run on 20 cells for lack of esc
What do you mine by that?

A 9920 would handle it fine. I think he means that he doesn't have an ESC that can handle that many cells at the moment.

yes, i think he is running a schulze that has a limit of 18.

-corey

I run a 18.97 schulze. if you really want something to get down and run long time. think of a 12xl on 8s lipo. My schulze dont hardly get warm. The 9xl is being run on a 7020 in a monster gt but I don't have room for my 10 cells packs i made up. I may try to re configure them. but time will tell. you have so many options mack. I my self like the 19 series a little better. the 22 series would be even more power ful.

this is what I think. IF you want to go fast. You want long run time. Money is the object. If money is no object you can go 60 mph and 30 min run time. It is your choice.

Money is a object because i have to buy everything
I just orderd my new charger

Ultra Duo Plus 30 - Graupner +
Schaltnetzteil 13,8V / 20 A - Graupner
And i bouhgt the conversion kit
This is the shoping list that i still have to buy
1xHPI aluminum shocks NR: A712
2xHBdiffcups NR:C8019
1xHPI bearing 8x16x5mm NR B085
2xspider gear NR: 87193
1xHPI Heavy Duty 2-Speed NR: 87227
motor???
controller
Ubec
accu's

So the motor setup may cost me a max of say 600dollar
That means controller Ubec and motor.

With $600 for the BL system, you could get a 2250 or 2240 motor on 20cells with a 9920 ESC..

Yeah i now but it's not much faster and my run time is much less
(correct me if i'am rong)

A 2250 on 20 cells would fly! You could probably get 50 MPH like promod did on "cold" (low) gearing.

get a good controller and a 9xl run it on 20 cells if you don't like it buy you the 2240 or 2250 and run. I have not ran a 2250 yet. but hopefully I can get it on the truck with the next couple weeks. I am going to a center diff like promod. I can let you know then what i think more of this set up. I can say that if it runs close to my 1930 as far as size to power ratio. I am going to be very happy rcing dude.

If the 2240 or 2250 is the beter option i would be beter of buying that one directly.
So that i dont have to spend 100 dollar on a wanderer 9XL
I now that the 22 serie would be more expensive but is it WORHT IT!!
Or do i get a littel more speed but my run time would be max 10 or 15min.

yeAH, get a 2250, and a 36120.. it will be a blast!!!!

no need for it though, balancing your needs. Like i told you about 10-15 times by email allready....

;)

a 9XL on 20 cells will reach the 50-55 mph as well.. how fast do you want to go.. If i where in your shoes, i would get that 9XL with 18 or 20 cells. a 9920 would be the controller of my choice as well. like i said earlier, you have got NO idea what 2000 watts of brushless power is capable of.

I don't want another controller I want max 20 cells but if a
lehner 22 serie is much beter. (I don't now this)
50 or 55 mph is fast enough.
But does it have the same torque/runtime
I don't care if it's costs 200euro more if it's worth it.

I do know. I like it to :D Hey a 9xl on a 9920 witha 20 cells is pretty kick butt. I have ran 18 cells. I wanted to try a 9xl on 3695. Get the one with no limit and 24 cells and let it fly.



Is the lehner 19 and 22 series better than the wanderer. Yes i think so. It has higher and tighter clearances. you know just a little more quality. The 22 series takes a special motor mount. If you want to spend the money for some kick butt awesome power. I won't stop you. Don't jump in with both feet if you don't know what you jumping in. A 1950 will mount to a xl motor mount. 3695 with out the 42000 rpm limit. a 1950 12 turn on 24 cells may be what you looking for. Lipo would be better for lighter weight and more voltage.

That's also a good idea coolhand to get that controller,
then its beter if i want more speed inthe future;)

Torque is in excess anyway with the xl motor,only get a 22 series if you're very fond of rebuilding transmissions of an evening.I'd say get a 1950 if you want the high end motor.

@serum,why is it you don't recommend the hi-amp versions?I think the quoted kv is the same for both but the non-high amp can be configured for a lower kv.

When i ordered my 1950 i ordered the hi-amp,was this a bad move?

Okay...

listen to this;

if your batteries can push out 2000 watts, the max output of your motor is 2000 watts minus the losses.

A 2240 on 20 cells can drain this 2000 watts from your batteries, but SO is the 9XL... it will be a matter of efficiency, and if it differs any, it will be a percent or 2 maximum.

The 2240-2250 have got segmented magnets, and to keep a very long technical story short; they perform better at partitial load. (get less hot) BUT since the 9XL is not a high KV motor, it will not too hot either. AND you can get a heatsink for that motor as well, from MIke..

All and all, i don't 'just' reccomend you that 9XL, it is a balanced mix of price vs preformance.

Okay chekt SERUM but what about what coolhand is saying.
maby thats the beter option go whit the 9XL on 20 cells and wen i want more i can go to 24cells
Sound nice to than i can upgrate in the future

If you want to go 24 cells, the 10XL would be my motorchoice..

TRUST ME MACK!!!! 20 IS MORE THAN ENOUGH!!!

It really is.. you never ever drove a truck with that much power. try it on 16 or 18, with the 2speed transmission. on 18 it will be so fast, it can do circles around your nitro savage...

If you have never ran a bl system. I hope you have some good equipment. It is hard to drive a truck at 55 mph. Just let us know which way you go. I think the 10xl is better for a 24 cell count to run. more run time to.

Okay i had another chat wiht SERUM on the email
So now he defently convinst me.
I will go whit the 9920 and the 9XL

I think you will like it. I has some good power and run time. for the money it is a great system.

Yeah I think so.
And my friend SERUM has got a nice deal for me for the controller and Ubec.
And because this will be my first BL setup,
he will sepports me on email.

"SERUM YOUR THE BEST THANKS"

Ýeah Mack! no problem..

No need to scream it in my ear.. ;)

Okay serum but you have been a great help for me.

I am curious tho if i want to push the limits.
Can I put 7s on the 9920 I now its say's max 20 cells of 1.2v so max 24.
put will the controller handel the abuse.

7s will be over that limit. 6s will be insane allready.(which is 22,2 volt's) Why on earth you want maximum power and speed while you haven't even driven brushless yet?

Trust me, you'll love the 9920 and 9xl.

Kind of odd thing to ask, but anyone have experience running a 9xl and 6s lipo? I mean, just how nutso are we talking here? I saw a vid of a Savage with a 8xl and 6s, but would think the 9xl is a bit slower........which might be a good thing, that 8xl was flat out stupid.

It will be just a tad bit slower than the 8XL, and you'll get more runtime. I don't really think an 8XL on 6s is too nutso, it depends on what you really call nutso I guess! :L: I do have a 10XL and 18 cells in my Savage right now, and once I finally recieve my spurs I'll tell you how it performs.

I now it's over the limit, but normaly its just to be safe so I thought maby a bit more than 24v would work.
7s will be 25.9v 6s will be 22.2v
So 20 cells (24v) wil be faster than 6s?(top speed)

I'am just starting on 16 cells
But i'am just CURIOS if it's possible.

Coolhand runs his 9XL with up to 18 cells, thats as close to 6s as i've seen with a 9XL

there is a video in the webiste I have started at rcpics . It has the 9xl on 16 cells. I can not test the 9xl no more on hi cell count until I finish my truck or get a new chassis. I would like to test the 9xl on 20 cells but do not have the limits. I am scared to try it on a 7020.

Fully charged, a 7s Lipo is 29.4v. Lipos won't drop their voltage much after a charge unless you don't let the CV phase get to completion. 6s fully charged is 25.2v. 20 NiMh cells fully charged (about 10mins. or so after charge finishes) will be at about 27v.

Allright MetalMan but still there is the question will
the 9920 survive 7s so the 29.4v what do you think?

I would guess no. It would fry.