Higher Gearing or Higher Voltage?

[bashingpumpkins]

I’m curious to know whether it is better to run higher gearing or higher voltage for bashing and speed runs.

I think a lighter weight is better for bashing, so a 4s setup geared for 55-60 mph could potentially run at a lower temp than a heavier 6s setup geared for the same speed. There should also be less breakages with the lower weight. Let’s say the platform is a 6s Kraton.

Weight seems like less of a factor for speed runs, so the lower current draw of a 6s setup would be preferable to a 4s setup geared to reach the same speed. It seems like 8s should be better than 6s, but a lot of speed runners seem to stick with 6s on 8s capable motors/escs. Let’s say the platform is a limitless or infraction.

 

[jondilly1974]

I’m curious to know whether it is better to run higher gearing or higher voltage for bashing and speed runs.

I think a lighter weight is better for bashing, so a 4s setup geared for 55-60 mph could potentially run at a lower temp than a heavier 6s setup geared for the same speed. There should also be less breakages with the lower weight. Let’s say the platform is a 6s Kraton.

Weight seems like less of a factor for speed runs, so the lower current draw of a 6s setup would be preferable to a 4s setup geared to reach the same speed. It seems like 8s should be better than 6s, but a lot of speed runners seem to stick with 6s on 8s capable motors/escs. Let’s say the platform is a limitless or infraction.

I don’t think you’ll find that a 6S vs 4S setup pulls less amperage. But the higher voltage spins the motor at a higher RPM, which usually creates more heat too.

 

[bashingpumpkins]

I don’t think you’ll find that a 6S vs 4S setup pulls less amperage. But the higher voltage spins the motor at a higher RPM, which usually creates more heat too.

The motor speed is a good variable to consider. The higher voltage setup would have the disadvantage of heat due to higher motor speed for bashing and speed runs.

 

[Joshstix]

I don’t think you’ll find that a 6S vs 4S setup pulls less amperage. But the higher voltage spins the motor at a higher RPM, which usually creates more heat too.

Because it is current that causes the heat in the motor, other than minor amounts from friction, and that power is current*voltage if you go up 50% on voltage you will get less current unless you are using 50% more power all the time on 6S compared to driving it on 4S.

 

[jondilly1974]

Because it is current that causes the heat in the motor, other than minor amounts from friction, and that power is current*voltage if you go up 50% on voltage you will get less current unless you are using 50% more power all the time on 6S compared to driving it on 4S.

But there is a large amount of heat created by the added RPMs of the motor due to the added voltage…

 

[Epplers]

I went to 8s on my Felony, mojave and Limitless. I went up a little in pinion to tame some of the torque and despite everyone telling me they will run hotter they run cooler. Now that being said I am not speed running or doing doughnuts. My Mojave is run hard with the dog chasing it but it still ran cooler than 6s on stock gearing. I use telemetry and castle data logging for tempature.