How much AUW with rctimer 2836/11? - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Apr 18, 2011, 07:17 PM
Registered User

How much AUW with rctimer 2836/11?

How much AUW can i expect from 4 Rctimer 2836/11?

I will build a quad (and maybe hexa) with these motors and wonder how much these motors can lift while still flying comfortable.
Sign up now
to remove ads between posts
Apr 18, 2011, 07:45 PM
Registered User
Fast calculation (I don't have much experience but hoping other can add or correct):
Spec says max 206W
Let say we can safely use them at 180 W (-~10%)
4 motors gives a total 720 W
With the right propeller/battery combo I think you should get at least 5g/W (I havn't seen one single chart from efficiency testing on a RC timer motor yet) -> 3600 g lift
And if I have heard right you should aim for a maximum AUW around half of maximum thrust so around 1800g but a little more may not be impossible.
Apr 18, 2011, 10:41 PM
Pants first, then shoes
I have a hexa using a minsoo blue kk board. Ive got those motors you mention and my hexa is on a x468 frame with aluminium U shaped tubing. I also have a home made camera mount arrangement and a small compact camera. A Lumix FH5. I have wrapped all booms in heat shrink to hide the wires and have also added pool noodles on my landing gear till I get better at landing gently everytime. Also have lights on board to. So my Hexa is a bit fatter than it needs to be. My all up weight including a 5000mah battery, camera and camera mount is 2.2kg and I get a safe 10 minutes flying out of the battery. I have got 14.5 minutes before losing power when testing. Im using APC 10 x4.7 props. Hover is at half throttle.

Hope that helps.
Apr 19, 2011, 03:00 AM
Registered User
Thank you so very much for your answers. They were really helpful. I think ive got a clue now on how much weight i can put on
Apr 19, 2011, 03:35 AM
Registered User
Originally Posted by Malx
I havn't seen one single chart from efficiency testing on a RC timer motor yet
Here you go flyboy.
Apr 19, 2011, 06:20 AM
Registered User
Originally Posted by tori3
Big thanks! I have been waiting for someone testing that one (and the BC3536). To bad you didn't have the instruments to go above 100W, it's nice to know where the limit are when the efficiency starting to drop significantly.

Could you please pm me the raw data from the test? I would like to use it in my calculations for my coming Y6 to see if I can use 2836 or need to go to 3536.

Edit: The drop in efficiency seems to be quite linear (the other graphs are not). From about 9g/W to just below 7g/W at 100W. That would mean that 5g/W at 180W is not that bad as approximation.
Last edited by Malx; Apr 19, 2011 at 06:30 AM. Reason: Added some notes about the graphs
Apr 19, 2011, 09:40 AM
Registered User
PM dispatched.

Yes, it looks suspiciously linear and 5 g/W (200 W/kg) sounds realistic. Although an appropriately scaled quad (2ish kg, 500 g per motor) will never reach these thrust levels in continuous flight.

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion How much expo is built into Tx that come with RTF? rwek Power Systems 2 Mar 12, 2011 09:20 PM
Discussion how much vibration (if any) is normal with edf unit cleansho93 Foamy EDFs 11 Mar 12, 2011 02:03 AM
Discussion Octo rctimer 2836-11 and 12in props, anyone? wac Multirotor Drone Talk 1 Jan 26, 2011 03:05 PM
Sold tricopter parts -HK401B gyros RcTimer 2836/11 motors beeker_12 Aircraft - Electric - Helis (FS/W) 3 Dec 06, 2010 08:23 PM
3 oz AUW with micro gear - how much weight could I save? Martin Hunter Scratchbuilt Indoor and Micro Models 14 Mar 17, 2005 04:45 PM