Thread Tools
Apr 26, 2004, 01:42 AM
Registered User

High KV or Low KV


I intended to purchase a 2015 series Himaxx and gear it down, to be used for APC 7 x 5 at arround 13000 rpm, at 3 cell Li-ion. assuming 10V underload, which to achieve 8 amp max output current.

2015-2700, using 2:1 gear ratio down to 13500 rpm.

2015-5400, using 4.4:1 gear ratio around 12300 rpm.

Which set up is better in term of efficiency? (longer flight time/less current draw) or if the set up is no good.

Please give advice.
Sign up now
to remove ads between posts
Apr 26, 2004, 06:56 AM
Registered User
Andy W's Avatar
High kV, 4.4:1..
..a
Apr 26, 2004, 09:51 AM
Tight is Right
Darren Hintze's Avatar
What Andy said. The higher Kv motor has lower internal resistance. Until you're up at a voltage where max RPM is an issue, it's usually better to go with the higher Kv motor geared deeper.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion High Kv and Low Voltage or Low Kv and High Voltage PatrickRC Power Systems 47 Jul 22, 2014 09:29 PM
Question High Kv low gearing VS Low Kv High gearing alexzuga Off-road Cars 2 Apr 22, 2014 01:02 AM
Discussion low-S high-KV vs high-S low-KV battery-motor set up jy0933 Multirotor Drone Electronics 33 Aug 19, 2012 02:28 AM
high kv low kv high amp low amp what_the?! Electric Ducted Fan Jet Talk 56 Sep 23, 2005 08:35 AM