RC-Monster Forums - View Single Post - X1-CRT 1/8th gearing choice

skellyo · 05.15.2008, 01:33 PM

4S on a 9XL is going to be hard to do 45-50mph reliably IMO. You'd need a 19T pinion to do 45 on 4S. On 5S, you can go with around a 15T pinion for roughly the same speed. This is based on the stock 62T spur.

Honestly, I think it's a lot to ask of a 9XL to do 45-50mph in a truggy. I think speeds of 35-40mph would be much more in line with keeping temps in a reasonable range.

	(#2)
skellyo RC-Monster Brushless Offline Posts: 2,466 Join Date: Jan 2006 Location: Florida	05.15.2008, 01:33 PM 4S on a 9XL is going to be hard to do 45-50mph reliably IMO. You'd need a 19T pinion to do 45 on 4S. On 5S, you can go with around a 15T pinion for roughly the same speed. This is based on the stock 62T spur. Honestly, I think it's a lot to ask of a 9XL to do 45-50mph in a truggy. I think speeds of 35-40mph would be much more in line with keeping temps in a reasonable range.