RC Monster Speed Estimate Calculator

[BrianG]

Well, the thing that's hurting your speed is the HB diff ratio of 4.3:1. Can you use a smaller spur and/or a larger pinion? That's the only way I can think of to increase your speed other than using larger tires or slightly higher voltage. Even if the spur/pinion ratio seems off, it's really the final drive ratio that matters...

BTW: You can use the export button on that page, which will open a window that will allow you to copy/paste the results into your post.

[jhautz]

Yea, use the buggy diffs not the truggy diffs. 13/43 vs 10/43 makes a HUGE differance. Also ditch the 72T spur and run the 66T and use something more like a 24 or 26 tooth pinion. I was running stock diffs with a similar setup and was able to run 24/70 all day befoire I went to the Mod1 gears. With 13/43(3.08) buggy diffs you could probably run 24/66 without a problem. I think thats the max that the stock motor plate will allow gearing wise. But if you need 26T pinion just dremel the slot in the motor plate longer and you shouldnt have a problem.

I looks like you had that setup for the most conservative gearing you could possibly do.

[ssspconcepts]

Originally Posted by BrianG

Well, the thing that's hurting your speed is the HB diff ratio of 4.3:1. Can you use a smaller spur and/or a larger pinion? That's the only way I can think of to increase your speed other than using larger tires or slightly higher voltage. Even if the spur/pinion ratio seems off, it's really the final drive ratio that matters...

BTW: You can use the export button on that page, which will open a window that will allow you to copy/paste the results into your post.

I thought about that too. Problem is that even with different gearing and larger tires I only gain a few mph.

In my other maxx I have basically the same setup except for the Novak HV Maxx 4.5 and I ran the calculation. It was within 4mph of what my telemetry unit indicates (35-40mph). I have also validated those numbers with a handheld GPS.