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lipomax · 03.09.2005, 08:52 PM

I've done my first test run with the Kokam 3200 packs in my emaxx. Once again, 18/66 gearing, 6s and running in first gear, top speed is 35 mph (34.9 and 35.4 two ways). It gets to that speed in a HURRY too - you can't pull on the trigger - too much power. That's about right too - in theory, a 2450 rpm/volt and with 5.75 inch tires and 23.4 volts. will give that speed exactly. Voltage drop is only a couple of volts - approx 3 volts at 60 amp spikes. VERY low voltage drops!

Top speed was in excess of 50 mph, but couldn't get a good clean run. It's only 25 degrees and the tires and the suspension couldn't hook up with the ground.

After about 1000 mah, the motor was at 150 degrees, battereies at 65 degrees and the controller at 90 degrees. Keep in mind that it's 25 degrees outside so this motor is working too hard/and or not really that efficient. It used only 1000 mah after about 8 minutes of run. That should allow me to run about 20 minutes of good running in first gear. Peak amps in second gear was exceeding 100 amps while in first gear it was around 60 amps. Watts were around the 1500-1900 in second gear and 1000-1500 in first gear.

The Kokams at 6s would make an excellent battery setup for racing - however, I think a slower motor would be better and geared a bit taller. I had it going over 57000 rpm in first gear and that's just too fast. I think the 1600 KV motor would be a better racing motor for 6s. But you gotta gear it right - so instead of 18/66, I would need to gear it like 27/66 (if that's even possible) or go to a smaller pinion and lock it in second gear so top speed is around 35 mph. Should make the truck a little more controllable and everything will be a little more efficient and not as hot. Torque is really not an issue. Even geared for over 50 mph, the truck will flip backward instantly in second gear!

What graphs do you want to see? amps? watts? power?

	(#9)
lipomax RC-Monster Carbon Fiber Offline Posts: 191 Join Date: Feb 2005	03.09.2005, 08:52 PM I've done my first test run with the Kokam 3200 packs in my emaxx. Once again, 18/66 gearing, 6s and running in first gear, top speed is 35 mph (34.9 and 35.4 two ways). It gets to that speed in a HURRY too - you can't pull on the trigger - too much power. That's about right too - in theory, a 2450 rpm/volt and with 5.75 inch tires and 23.4 volts. will give that speed exactly. Voltage drop is only a couple of volts - approx 3 volts at 60 amp spikes. VERY low voltage drops! Top speed was in excess of 50 mph, but couldn't get a good clean run. It's only 25 degrees and the tires and the suspension couldn't hook up with the ground. After about 1000 mah, the motor was at 150 degrees, battereies at 65 degrees and the controller at 90 degrees. Keep in mind that it's 25 degrees outside so this motor is working too hard/and or not really that efficient. It used only 1000 mah after about 8 minutes of run. That should allow me to run about 20 minutes of good running in first gear. Peak amps in second gear was exceeding 100 amps while in first gear it was around 60 amps. Watts were around the 1500-1900 in second gear and 1000-1500 in first gear. The Kokams at 6s would make an excellent battery setup for racing - however, I think a slower motor would be better and geared a bit taller. I had it going over 57000 rpm in first gear and that's just too fast. I think the 1600 KV motor would be a better racing motor for 6s. But you gotta gear it right - so instead of 18/66, I would need to gear it like 27/66 (if that's even possible) or go to a smaller pinion and lock it in second gear so top speed is around 35 mph. Should make the truck a little more controllable and everything will be a little more efficient and not as hot. Torque is really not an issue. Even geared for over 50 mph, the truck will flip backward instantly in second gear! What graphs do you want to see? amps? watts? power?