HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Nov 17, 2013, 09:43 PM
Registered User
Joined Mar 2013
19 Posts
Discussion
Would SunnySky X4112S-11 KV400 motors work for a Quadcopter?

Hello, I was wondering if the X4112S-11 KV400 motors would work for a 2 Kg quadcopter.
What is the min trust that the motors should have for a quad?
MARTYNOLY is offline Find More Posts by MARTYNOLY
Reply With Quote
Sign up now
to remove ads between posts
Old Nov 19, 2013, 12:11 PM
Registered User
United States, CA, Huntington Beach
Joined Jan 2013
1,089 Posts
Quote:
Originally Posted by MARTYNOLY View Post
Hello, I was wondering if the X4112S-11 KV400 motors would work for a 2 Kg quadcopter.
What is the min trust that the motors should have for a quad?
he answer to your questions is, that depends. With low kV motors you have to have a quad big enough to swing larger props because of their low RPM. Your projected weight is a little higher than say a 450mm quad, depending on the payload you are flying.

When choosing motors its best to refer to the MFG prop testing data to determine what the best prop is for the battery you are wanting to fly. Not how many mA but the voltage, 3S, 4S, 5S etc.

My largest Multi is a 800 mm Hexa running Sunnysky 4018 380kV motors spinning 14" props. It has no problem lifting and AUW of over 3.5 KG and flying 10 mins + on a single 5000 mA 4S battery. Your projected quad is much lighter and only has four motors to feed.

The bottom line is I think the 4112s are a bit of an overkill for what you have described, but I have not been able to find prop testing data on the motors. I suggest you email Sunnysky and ask for current prop testing data so you'll know for sure what the lifting capability is of these motors.
hoggdoc is offline Find More Posts by hoggdoc
Reply With Quote
Old Nov 19, 2013, 02:13 PM
Registered User
Joined Mar 2013
19 Posts
Thank you.

Quote:
Originally Posted by hoggdoc View Post
he answer to your questions is, that depends. With low kV motors you have to have a quad big enough to swing larger props because of their low RPM. Your projected weight is a little higher than say a 450mm quad, depending on the payload you are flying.

When choosing motors its best to refer to the MFG prop testing data to determine what the best prop is for the battery you are wanting to fly. Not how many mA but the voltage, 3S, 4S, 5S etc.

My largest Multi is a 800 mm Hexa running Sunnysky 4018 380kV motors spinning 14" props. It has no problem lifting and AUW of over 3.5 KG and flying 10 mins + on a single 5000 mA 4S battery. Your projected quad is much lighter and only has four motors to feed.

The bottom line is I think the 4112s are a bit of an overkill for what you have described, but I have not been able to find prop testing data on the motors. I suggest you email Sunnysky and ask for current prop testing data so you'll know for sure what the lifting capability is of these motors.
Thank you very much for your answer. I decided to go for a higher Kv, about 600kv or above.
MARTYNOLY is offline Find More Posts by MARTYNOLY
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
For Sale 6 x SUNNYSKY X4112S 400KV squamish_chief Aircraft - Electric - Multirotor (FS/W) 2 Jun 27, 2014 03:06 PM
Discussion Experience with Sunnysky X4112 motors? WiseDuck Multirotor Talk 18 May 03, 2014 01:12 PM
Sold Guaging interest: 8 Sunnysky 2814-11 motors, 8 4s 8000mah Zippy batteries for sale rc-mike Aircraft - Electric - Multirotor (FS/W) 9 Aug 09, 2013 12:55 PM
Sold (6) Sunnysky V2216-11 KV:900 Brushless Motors Sleepyc Aircraft - Electric - Multirotor (FS/W) 3 Mar 01, 2013 05:57 PM
Discussion what Wing would work for my motor/esc VegasFreak Flying Wings 0 Feb 03, 2013 01:36 PM