RC-Monster Forums - View Single Post

lipomax · **Lipo for Emaxx -** 02.03.2005, 01:25 AM

Hello guys, I thought I'd drop a line here since Mike is such an awesome dude when it comes to BL for emaxxes.

I've got a totally stock emaxx (even the tires) and I've gone brushless with it and lipo.

I've taken 4 of the shocks off because they add weight. I added heavier springs though and since it's cold here in Chicago, the shock oil tends to thicken an add extra dampening. I've also moved the shock mounts to the outer holes on the arms and inner holes on the shock mount so I can limit travel.

Just so you know, I used to run 12 cell GP3300's and a variety of motors. At least for me, it seemed to top out at about mid 40's mph no matter what brushless I used. So, I figured that the 3300's were only capable of putting out so much power.

For a moment, I ran 6s lipo (22.2 volts) and used the Kokam 2000 mah 15 c packs. They were getting slightly overdischarged. Peaks were at 85 amps!!!! That's over 40C!!!! The motor was a Basic 2700 and geared 18/66.

Then I went with 6s and polyquest 3100 mah packs. Same motor and gearing and that was about 60 amps in first gear and 80 amps in second gear. Still too much amp draw for the lipo pack.

Next, I dropped the motor to a Basic XL2400 and went 8s 29.6 volts (but actually, it was at 32 volts) and ran it 15/66. Peak amperage dropped to about 60 amps which is nicer for the batts - only about 20C peaks. So, I'm happy with amp draw now... I might try different motors and lipo combos later on.

My emaxx total weight with body and batteries barely tips the scale at 9.0 pounds. If I had lighter tires, I bet it'd be about 8 1/2 pounds.

The polyquest 3100 packs fit into the stock emaxx trays with a little slop so for me, it was ideal. It fit, no mods, and it was protected by the battery trays. The temps are pretty well under control since I don't continuously run it. Not until I know the batteries can handle that kind of load... and the motor don't fry. I'm peaking out at around 1500 watts. That's 2 HP in a 9 pound emaxx. Keep in mind, that's 2HP from 0 to 50 mph!!!! So, I can instantly flip in first AND second gear.

If you guys have questions, ask away...

	(#1)
lipomax RC-Monster Carbon Fiber Offline Posts: 191 Join Date: Feb 2005	Lipo for Emaxx - 02.03.2005, 01:25 AM Hello guys, I thought I'd drop a line here since Mike is such an awesome dude when it comes to BL for emaxxes. I've got a totally stock emaxx (even the tires) and I've gone brushless with it and lipo. I've taken 4 of the shocks off because they add weight. I added heavier springs though and since it's cold here in Chicago, the shock oil tends to thicken an add extra dampening. I've also moved the shock mounts to the outer holes on the arms and inner holes on the shock mount so I can limit travel. Just so you know, I used to run 12 cell GP3300's and a variety of motors. At least for me, it seemed to top out at about mid 40's mph no matter what brushless I used. So, I figured that the 3300's were only capable of putting out so much power. For a moment, I ran 6s lipo (22.2 volts) and used the Kokam 2000 mah 15 c packs. They were getting slightly overdischarged. Peaks were at 85 amps!!!! That's over 40C!!!! The motor was a Basic 2700 and geared 18/66. Then I went with 6s and polyquest 3100 mah packs. Same motor and gearing and that was about 60 amps in first gear and 80 amps in second gear. Still too much amp draw for the lipo pack. Next, I dropped the motor to a Basic XL2400 and went 8s 29.6 volts (but actually, it was at 32 volts) and ran it 15/66. Peak amperage dropped to about 60 amps which is nicer for the batts - only about 20C peaks. So, I'm happy with amp draw now... I might try different motors and lipo combos later on. My emaxx total weight with body and batteries barely tips the scale at 9.0 pounds. If I had lighter tires, I bet it'd be about 8 1/2 pounds. The polyquest 3100 packs fit into the stock emaxx trays with a little slop so for me, it was ideal. It fit, no mods, and it was protected by the battery trays. The temps are pretty well under control since I don't continuously run it. Not until I know the batteries can handle that kind of load... and the motor don't fry. I'm peaking out at around 1500 watts. That's 2 HP in a 9 pound emaxx. Keep in mind, that's 2HP from 0 to 50 mph!!!! So, I can instantly flip in first AND second gear. If you guys have questions, ask away...