new brushless build questions fo xL motors
 

I have ran 3 10L motors and 2 9L faegio motors for some time. I currently have a shulze 18.97 and 4 older hacker comps, I know the controllers are 1200 watt controllers, and I have seen alot of speculation of how manny watts a xl8 could use. I want to take the plunge into an xl can, but am teribly afraid of popping a controlers. I have faithfully used my controllers for some time and although I got my money's worth out of them, I would still like to keep them for alot longer.

the truck I am building is a hybrid, I am using flm hybrid bulks and a chain drive trans out of a Twinforce, and slapping them on a torpedo chassi with twinforce batt cages slung under. so the gear ratio would be of a stock twinforce

I have ate up manny e-maxx trans and only have 2 sets of ultramaxx gear sets for me to run, one is on my brushless g2r revo, and the other is on my dual 9l race bomb e-maxx. So I am left with the best trans ever made a twinforce chain drive
http://i22.photobucket.com/albums/b3...eme/giboo2.jpg
http://i22.photobucket.com/albums/b3...eme/giboo1.jpg

I already have a Twin force with 10L with hackercomp, and its the ultimate brushless truck. The drive train is indistructable with tcd diffs and the trans
so I know it will hold up to a coke can motor like 22 series
HTTP://users.adelphia.net/~tjjohnson2/twinmovie.wmv

but the big question is, if I worry too much about my current controllers taking on an XL can should I just buy another controller. I would like to have another with some heft to it for other projects. Something like a 2000 watt controller. but nothing like a shulze 36.160 that is 650$, I only have a budget of 300$ for controller and 100 for motor. I have my eye on a 9xl or 8 xl, but I can only run 14 cells so I am leaning to the 8xl, but I know a 9xl is easier on the controller. I dunno, big delima,

I do know I am going to run a 10L and shulze in the truck initaly, but I have come accustom to the torque dually BL mosters I have built in the past. But to keep down weight and cell count, I would like to see what the xl can has to offer

The XL cans basicly give you longer rumtime, cooler temps and a bit more torque, for 14 cells only id get a 7xl, no need for a 8xl, you can use it but it will have less power. For my g2r im getting a 10L on 14-16 cells. what runtimes are you getting?

Coolhand_country has run a schultze 18.97 with his 2250 with no problems

what you should consider is the amps the controller can handle and not hte watts. a 9920 would do just fine on a xl motor. im not sure as to the hackers since im not familiar with them but a 9920 will do fine.

Yes, a 9920 should be plenty.

yeah but how manny times did he run his 2250 with that controller, basicly this is going to be my daily driver replacment of my brushless twinforce since I have to wait freaken 3 weeks for 6$ bushing parts for repairs. I really want something to hold up for a bit, a combo I can play with for years and not worry.

I run the hacker comp and 10L in the g2r I get a 20min walk around the block playing, or about 15 WOT on 14 gp3300 not matched

I dunno about the 9920, but the 9918 is only a 1000watt controller and I do not think I wish to buy BK agian, been threw 3 warrior 70s and 1 warrior 9918, to do a comparison the hacker is a quantum2 vs some duratrax 12t is like BK controller, guess if I want a real good product agian I will have to wait for Castle's offerings

The BK controllers arent that bad, what is keeping you away from them? How is the speed of the 10L ? thanks.

He run it a few times that i know of(even made a vid), full packs and even back-to-back with no problems that he told me about. I'm sure he will chime in later

its obvious you have not played with better products than BK. I do not like the wierd lose of posistion it gets accelerting at various times. sounds like your trans is being ate up. Also the smoother accelration from hacker, the only thing I do not like about hacker is the breaks. But I dial that down with 3pk

also I can only gestimate top speed of 35-40, but I do like the acceleration the most

Well, not all systems are gonna run smoothly, but i dont know why it accels at varoius times?

35-40, sounds good to me:)

well I guess I better wait till I hear from people that run the xL motors. I already seen a few people pawn off thier 7xl, seems like a hot motor of that size, but I do not know. I want to play with xl stuff, but not pop my controllers

Yea, ask coolhandcountry, hes played around with TONS of motors.

Tons of motors :D
I have had pretty good luck with the schulze 18.97 on the 7xl 9xl and 2250. The controller did not heat up with the 2250 as muc has with the 7xl. The 7xl draws some amps some time and puts heat in the esc. I have not got a chance to run a 8xl so can not say for sure about the run time or performance. The 9xl on the other hand does real well. I ran a 9xl on a 7020 with out no problems cause the amp draw was not enough to make it get hot. It was in a monster gt with some big tires.

Told'cha, CHC, so the 7xl heated the controller up more because it drawed more amps? Oh i get it now!

CHC, want to run a few questions past you, since you have these motors, on the 9XL, would 14 cells be worth while and what kind of gearing would you do in an e-maxx with 64 tooth 32 pitch spur for that manny cells?

here is a video on the truck http://www.rcpics.net/view_single.ph...3d5ad59ddd0513
As far as gearing it would depend on if you have the stock diffs or the buggy diffs.

consider them stock diffs, I know where to work from there

i would say about a 20 tooth pinion.

20, i dunno, maybe a 18?

20 should work out good could run a 18 for a little longer run time to. if you going out for a speed run you could step up to a 22 or so.

22, its gonna be almost half the size of the spur! :p

Ok I just recieved my wanderer 8xl, and still waiting on my hybrid bulks to show up. I now have to pick up some 5.5mm conectors and find out if there is a motor clamp for xl cans.

Also I got to figure out some gearing. Basicly the diffs and trans are of stock gearing on a twin force. 50t spur is all I know for now, going to have todo some research on gear ratios. but I think I am going to slap a 16t pinion on it and hope for the best since I am not the best at gearing calculations and figureing stuff out like that. Just going to use trial and error and hope not to pop my 18.97 esc

I would keep a check on motor and controller temps every 2mins when test running. This way you can see if the motor or controller are heating up quickly, and from there you can get an idea of whether to gear up, down or stay the same. Thats the way I did it

7XL on 14 cells is a great setup, good speed/power and average runtimes. Best suited to the 9920 though.

I really have not had the chance to play with the 20 series warriors. but unless the worked on alot of improvements over the 18 series I am not going to fool with them

What is up with the 18 series?

I do not like the wierd lose of phase posistion it gets accelerting at various times. sounds like your trans is being ate up.

In my case cogging chews up spur gears very very quickly....:002:

Oh ok. I haven't had that problems with the 20 series. I have had a problem with a truck but it seems to be the truck. I have tried different motors on it and same problem. It works on another truck.

whats your issue I may be able to help

maxxdude buy a kimbrough spur, I use them on dual bl

http://www.rc-monster.com/forum/showthread.php?t=2047
read up on it here.

try an round iron core around each motor wire. sounds like you might be getting inductance bounce off your chassi and screwing up the phase posistion on your controller.

you can get the round iron cores from a radio supply shop

some cat 6 cables have them on them

and a alot of low level audio cables may have them

you can steal them off them

the reason why your shulze is not having this trouble is because its a better controller and they have acounted for this to happen

well I got 1 pair of hybrid bulks out of 2 from flm. mike is checking on the other set.

But I tore down my hybrid truck and check the center cvds on the torpedo and every thing looks like its going to fit. should have some build pix soon

pix of tonights work

HTTP://users.adelphia.net/~tjjohnson2/hybrid1.jpg
HTTP://users.adelphia.net/~tjjohnson2/hybrid2.jpg

It looks like it is going to be a long truck.

well I am having fit and finnish issues, I would break out the trusy dremal, but its an isse with my flm hbrid bulks and and supermaxx shocktowers

there is the top case screw in the flm bulks right in the middle and right in the way of my shock tower lower brace in the middle

what shock towers do you use with your hybrid bulks

I am also looking into the xl, but would love to hear more. I have not gone brushless YET, but when i do, i'll have some money to play with....so i am a little info hungry!! thanks. It seems many go with 9920/9L, this seems like a dependable set up, but maybe would like a little more speed?