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BrianG · 12.24.2006, 05:49 PM

@fiero_silva: I think I also posted a response over at the Traxxas forums.

You can gear down by going with a smaller pinion or larger spur. If you divide the tooth count of the spur by the pinion, you get a ratio. Larger ratios are lower geared and lower ratios are geared taller.

According to my calculations, you should be able to reach ~50mph in first gear and 66mph in second with 6 cells, and no tire ballooning. So, something is definitely wrong.

Generally, it is advisable to use a lower KV motor and higher voltage. The current requirement would be less. Some vehicles are difficult to use anything more than 6 cells, but since the Jato is custom, it shouldn't be difficult to use 3s-4s.

And yes, battery quality is a big factor in performance. So, get high quality GP cells or good lipos capable of ~100A continuous for best results.

	(#9)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	12.24.2006, 05:49 PM @fiero_silva: I think I also posted a response over at the Traxxas forums. You can gear down by going with a smaller pinion or larger spur. If you divide the tooth count of the spur by the pinion, you get a ratio. Larger ratios are lower geared and lower ratios are geared taller. According to my calculations, you should be able to reach ~50mph in first gear and 66mph in second with 6 cells, and no tire ballooning. So, something is definitely wrong. Generally, it is advisable to use a lower KV motor and higher voltage. The current requirement would be less. Some vehicles are difficult to use anything more than 6 cells, but since the Jato is custom, it shouldn't be difficult to use 3s-4s. And yes, battery quality is a big factor in performance. So, get high quality GP cells or good lipos capable of ~100A continuous for best results.