Motor advice please
 

Hello, I am a new member and have question about brushless motors. I currently have a Hot Bodies Lightning RR I converted to electric. I used a HV maxx 6.5 motor geared 44/12. It ran fine on my matched 3300 cells. I bought the Orion 4800 lipo cells and ran them only to have the controller shut down because the motor got too hot. After cooling off it ran fine.

My question is can I make this setup work or do I need a new motor and speed control? I have already made an adapter to allow the use of the 51 tooth spur gear if that helps.

If a new motor and speed control are what is needed would a Feigao 540 7xl motor with a Mamba Maxx controller work? Please advise.

I hope to convert a truggy next, a x1-crt or HB lsp and would use the same set up.

Thank you for your help.

if you wanna do a truggy i would suggest a better setup then the hv-maxx.
if you'd like to run your buggy with the 6.5 you should put lsp-r diffs in it.
then it will be 43/10.
instead of 43/13.

A 7xl and a MM would be a nice setup in a LSP! BTW welcome to the forums.
Im interested to see how you converted your lsp, if you can, post some pics.

Sylvester I have not done a LSP as of yet I am trying to decide between a lsp and a x1-crt. By the way I don't know how to post pictures yet.

Id reccomend the LSP-R, but many will reccomend the CRT. They are both amazing truggies, it comes down to personal preference.

XRAy truggy looks sweeeeeetttt!!!! But I don't want to even know what the price is gonna be.

BTW the HV could run a buggy ok I think, but you need to gear it much lower... try 10/46 and see how it runs. Novak REALLY needs to make a lower kv motor. I have tried to tell them but they don't seem to understand. Idiots. ;)

Maybe they don't want to (or can't) make an ESC capable of higher voltage to take advantage of a "slower" motor. It's probably easier to rewind the motor than it is to redesign an ESC.

Can the Novak do 4s? I thought it could... so they should have a <3000kv motor like we all run in 1/8 center diff stuff.

Mabye they just want it limited to emaxxes.

Me personally would dump the Novak all together! But that's just me, you could have a better set up like the MM 7xl, or even a lehner (better) and run that in the LSP as well I believe...but I would prefer the CRT, more room for stuff, parts availability are limitless.

neweuser what lehner would you recommend for use with the mm

that would depend on what you are throwing it in. If it's a 1/8th scale, I would probably go with the 1940

I'm running a 7XL with a MM in a buggy that I just converted. I've only run it on 3S, so far. Still waiting for the 4S packs to come in. After having run the setup, I'm finding that maybe the 7XL is too low a wind for what I'm doing with the buggy. With a truck, you might want to consider an 8 or even 9XL. Something in the neighborhood of a 2000kv rating and run it on 4S Lipo.

Of course, I've never done this in a truck, but I can tell you that the 7XL is a pretty hot motor. General experience with brushless tells me that in a truck that you are likely going to bash with and abuse, you'll want a higher turn motor for cooler running. Believe me, 35 - 40mph in a truck is plenty fast too.

I agree... I usually recomend a 9XL (maybe an 8) for a truggy... unless a guy really wants a speed demon.

Hee hee but I have never ran these motors actually... but motors is motors and kv is kv.

I'm in the same boat as glass doctor in that I've never run the 8xl or 9xl, but I've had a bit of experience in 1/10 scale and with the 7XL. I guess you could say the my recommendation is the result of an extrapolation, but I think it's valid. :)

If I were building a truck or truggy, it definitely wouldn't be with anything hotter than an 8XL. What you really have to consider is the rolling mass of the tires are wheels (and diameter). It's a lot for the motor to contend with, and a higher turn motor is better suited to this. In fact, I'd probably start with a 9XL. That on 4S lipo with the MM esc should make for some worry free fun with good runtimes.

hehe, I think they should compensate by getting bigger tanks! LOL

Tanks? We don't need no stinking tanks!! :)

Exactly! No pit stops! But the Nitro heads do! Why should we have to stop for their ignorance? If that's ok to say?

neweuser,

I hear ya. I mean, there are some guys that run the Novarossi 21-5s because they like the bottom end grunt, but they are getting something like seven minutes on a tank (give or take) depending on their gearing and pipe. Some run the V-Spec because it gives around nine minutes. It's a matter of equipment. It isn't my fault that my power source gets me 20-25 minutes. If they wanted it, they could have it too.

On the other hand, I'm just glad that they are letting me run. We'll just have to see what happens if I start winning against the guys that used to beat me.

I like the sound of the 8xl or 9xl could someone provide a link to the rc monster store for this motor?

Here ya go. There are wanderers too.
http://www.rc-monster.com/proddetail...540C_XL&cat=20

AA-i hear ya...the price you pay for the choice you make!

This one http://www.rc-monster.com/proddetail...540C_XL&cat=20

or this one http://www.rc-monster.com/proddetail.php?prod=BKWAND_XL

depending on how much room you have. The wanderer motors are really just rebranded Feigaos. I hear that they are supposed to have better bearings, but can't verify this.

AA, we should hand the complaining nitro guy a 32oz. soda cup and tell them they just have to make a fuel tank out of it so they can have the big runtime too. :005:

Oh... or tell them to just strap in the whole pit fuel bottle, hee hee... that would do it!

I was thinking more like a 2 liter bottle!:005:

Man, I've been sayin it for a couple of years now. Nitro has nothing on electric. I was in my LHS a little while back and this guy walks in. I'm standing there with my T4 with the Mamba 7700 and 3S lipo. Anyway, the guy tells the guy behind the counter, "I want to go fast." The owner asks him, "how fast do you want to go?" The counter guy shows him the Jato and the 4-tec. The potential buyer then wants to know what's faster, and the counter guy points at my T4. I just had to laugh.

LOL same thing happened to me and my flm mamba pede! lol it was soooo funny :D

That is so great, I was laughing while reading that. The power of brushless. :004:

yeh i converted my hpi rs4 rtr and i just dropped in the pede tranny, and locked its diff and went out and drove it and guess what??

2 of the 6 driveshafts are bent to CRAP:005: the power of bl:018: :004: :D

Yeah, brushless. A new way to break stuff. On my T4, I had to remove the MIP CVDs because I kept breaking them. I just went back to dogbones. At least they were dependable.

i hear yah lol :D

Thanks for the help. So far I am thinking of using the following.

9xl motor Feigao 540 xl or wanderer 9xl (any thought as to which is more reliable)
Mamaba Maxx controller.

To go with the items I have:
two Orion 4800 lipo packs
13/51 gearing in center

This hopefully will give me a charge it and run it buggy and the flexability to move the motor to a truggy in the future. Is this correct?

Some would argue that the wanderer is more reliable, simply by virtue of the better bearings, that some say it has. Personally, I'd go with the one that I thought looked better. LOL.

Imo id go with a wanderer with RCM heatsink.. its pretty much indestructable since the rear and front will stay put.

Wanderer with heat sink it is sounds like just what I am looking for. Thanks

Anytime, im sure you will be happy with it.

Will I also need a UBEC and cutoff with this system? If a cutoff is needed please advise as to which one and include a link if you could. Thanks

No cutoff neccesary.. the Mamba IS the best cutoff on the market. :) It's fully pregrammable.. and easy too.

But you do need to get a ubec. It's simple to install... and you can get them for only $15.

Don't forget about putting a plastic spur gear on there too, if you haven't already.

glassdoctor do you have a link to the ubec?

Scroll about halfway down this page for a few cheap ubecs $10-15 ea
http://home.comcast.net/~truerc/esc/escNmotor.htm

I have two of the $12 ones there... no problems with them. I also have a Kookflight from RCM, and another $15 one from somewhere?

I have found this BEC to be very reliable. Its small, light and good quality for the $15. Im running it on almost every one of my trucks and never had a problem with any of them.

http://www.helidirect.com/product_in...oducts_id=1158

I ordered two of those ubecs from truerc. I hope they work well enough. I don't know yet. It's been about two weeks and I still haven't gotten them.

I'm having horrible luck with getting my orders lately.