Neu 1512/1.5D in Buggy?

[DRIFT_BUGGY]

My local track is fairly large, pretty sure 2 maybe 3 conrods have given way on the back straight.
Just worked it out, if I was running a 10T pinon and 46T Spur while running the 15D and 4S the ratio would be 15.22 and running about 55mph approx. which is more than I thought. If I ran 12T and 3S would be 12.68 with approx. speed of 50mph.
Do you notice I difference if you were running a lower KV motor with more cell lipo than a higher kv motor with lower cell lipo?

Lower kv and taller gearing = less load on the motor and lower rpm at top speed. A Neu will take rpm upward of 60k but for the least heat and best efficency you'd like to be running around the same rpm's as a nitro, mid to upper 30's. The enticement to run 3s is the weight difference between the 1515 and the 1512 as well as the 4s and the 3s. On 3s you could run a considerably higher mah pack and still have a much lighter car although it will run warmer due to higher amp spikes on the lower voltage. It's a tough call...

[DRIFT_BUGGY]

Originally Posted by Chapito

Lower kv and taller gearing = less load on the motor and lower rpm at top speed. A Neu will take rpm upward of 60k but for the least heat and best efficency you'd like to be running around the same rpm's as a nitro, mid to upper 30's. The enticement to run 3s is the weight difference between the 1515 and the 1512 as well as the 4s and the 3s. On 3s you could run a considerably higher mah pack and still have a much lighter car although it will run warmer due to higher amp spikes on the lower voltage. It's a tough call...

So I would be best off if running the 1.5D to run a 3S and run talling gearing like 14T or 15T?

That's the set up I would like to build next. I have'nt run 3s in a buggy yet but I can't imagine that it would'nt be competitive. I would post a question in the brushless section tiltled 3s/1512/1.5d in a buggy? and see if anyone else has comments on 3s buggies. You'll get more feedback in that section. Also, check out this calc.:

http://www.scriptasylum.com/rc_speed/index.html

[GO-RIDE.com]

Most everyone I've seen racing a 1/8 buggy conversion is using 4S. I've always read that higher voltage (lower kv motor) means cool electronics, less amps and longer run times per battery gram. I'm sure a higher kv Neu motor on 3S would be very fast too, but also draw more amps for a given speed and thus run both the motor and esc hotter. At least that's what I've been reading in this and other forums. Is there something I'm missing? I guess one advantage is the current ESC of choice (Mamba Max) can be run on 3S without an UBEC, but I assume it would run hotter due to the greater amp draw?

The other thing I've read is that two equal weight batterys (ie: same # of cells), but one is 3S and the other is 4S, the 4S will give a bit longer run times (even though the 3S has more Mah) because volts are more efficient than amps. Obviously, each has to have a motor that is optimized to its voltage for this to be a far test.

I'm getting ready to convert an 8ight so I've been reading up a lot on the choices out there.

[DRIFT_BUGGY]

Originally Posted by GO-RIDE.com

Most everyone I've seen racing a 1/8 buggy conversion is using 4S. I've always read that higher voltage (lower kv motor) means cool electronics, less amps and longer run times per battery gram. I'm sure a higher kv Neu motor on 3S would be very fast too, but also draw more amps for a given speed and thus run both the motor and esc hotter. At least that's what I've been reading in this and other forums. Is there something I'm missing? I guess one advantage is the current ESC of choice (Mamba Max) can be run on 3S without an UBEC, but I assume it would run hotter due to the greater amp draw?

The other thing I've read is that two equal weight batterys (ie: same # of cells), but one is 3S and the other is 4S, the 4S will give a bit longer run times (even though the 3S has more Mah) because volts are more efficient than amps. Obviously, each has to have a motor that is optimized to its voltage for this to be a far test.

I'm getting ready to convert an 8ight so I've been reading up a lot on the choices out there.

Perhaps im better off looking at the 1Y which works out to be 40700RPM with a 4S battery.