RC-Monster Forums - View Single Post - Jammin X-1 CRT motor selection

glassdoctor · 03.09.2007, 10:43 AM

You do NOT want the hot motors like 6xl or 7xl... especially on 6s lipo!!

I think a 9XL is the motor you should run. 50mph would be easy on 6s which is your target. 50mph on 4s would need a very tall gear but could do it if you really want to... 16/46 gearing would be around 45mph or so.

For 6s I would actually go lower... 10-11XL

here's the rpms at 21v for reference:
8XL 41400
9XL 36800
10XL 33100
11XL 30100

30K is plenty.... my truck/buggy run under 24/27k and they do 40+ easy

	(#3)
glassdoctor TEAM FUSION Offline Posts: 2,041 Join Date: Jul 2006 Location: Iowa... Hawkeye country	03.09.2007, 10:43 AM You do NOT want the hot motors like 6xl or 7xl... especially on 6s lipo!! I think a 9XL is the motor you should run. 50mph would be easy on 6s which is your target. 50mph on 4s would need a very tall gear but could do it if you really want to... 16/46 gearing would be around 45mph or so. For 6s I would actually go lower... 10-11XL here's the rpms at 21v for reference: 8XL 41400 9XL 36800 10XL 33100 11XL 30100 30K is plenty.... my truck/buggy run under 24/27k and they do 40+ easy Jammin CRT MM/Neu 1515 1700kv Losi 8IGHT MM/Neu 1512 1900kv Kyosho 777 T4 MM 5700 B4 LRP XX4 MM 7700 old losi xxcr, MM4600 4s lipo 70mph+