Project 30mm - RC Groups
Thread Tools
Sep 09, 2013, 01:46 PM
Registered User
EndOfDays's Avatar
Build Log

Project 30mm


Yet another copter is going to be build, the title is according to the diameter of the rods used for this copter. My last project aber 12mm rods can be found here:
https://www.rcgroups.com/forums/show....php?t=1880665
This time not the flight time only is the major focus, but the ability to lift a reasonable payload for a reasonable time.
Today I got the first components delivered, the 30mm rods, which have nice quality. The rods are 30/24mm meaning, that they have 3mm wall thickness, which is enough to carry payload in the desired range. The weight per meter is 275gr, so I hope to be able to keep the frame below 2kg in the final stage (incl. motor mounts and additional CFK reinforcements).

Hier a pic of the rods:


and here a drawing of the copter (will be an X8), the length of the rods is 1m each.


and an optional variant:


best regards
Ferdinand
Last edited by EndOfDays; Sep 10, 2013 at 07:02 AM.
Sign up now
to remove ads between posts
Sep 10, 2013, 06:58 AM
Registered User
EndOfDays's Avatar
Finally the Propeller and motors arrived ...

U-Motors 100KV:






Propeller 28x9,2


If they fly as they look ...

best regards
Ferdinand
Sep 10, 2013, 07:04 AM
I Like Popcorn
flylite's Avatar
Wow, this is going to be an impressive build!

Thanks for sharing EOD
Sep 10, 2013, 07:05 AM
Registered User
thach's Avatar
OMG It's really big.
How much are the motors & propellers?
Sep 10, 2013, 07:06 AM
Registered User
lol again an extreme build
Sep 10, 2013, 07:11 AM
DJI Supporter
Sid3ways's Avatar
Ferdinand, I knew you wouldn't disappoint us. Thank you for being the pioneer in endurance flight!
Sep 10, 2013, 08:46 AM
Registered User
chuenwe's Avatar
Holy batman!!!
Sep 10, 2013, 09:44 AM
DroneWorksUSA.net
flohio117's Avatar
I I have been wanting to do a build with those motors and props for months now but the price is out of my budget right now I'm really glad somebody is finally going to put these new motors to the test because ice been wanting to know how they perform. Good luck with your build I'll be waiting anxiously for the videos
Sep 10, 2013, 09:57 AM
Registered User
hugy's Avatar
Ferdinand as always you are awesome. Following with great interest.
Sep 10, 2013, 11:42 AM
Registered User
Stefan_Go's Avatar
An X8 with hose motors?
You don't do things half way, do you? I'm so subscribed to that because if I ever got the budget, I was thinking of building a Y6 with those drive train.
Sep 10, 2013, 03:19 PM
DroneWorksUSA.net
flohio117's Avatar
I think you would get a longer flight time just going to a hex or octo. I'm not sure if flight time is what your shooting for but an x8 seems less efficient. Either way it's pretty awesome lol.
Sep 10, 2013, 03:42 PM
Registered User
RCvertt's Avatar
Great build!!! Can't wait to see it working.
Sep 10, 2013, 03:44 PM
Registered User
EndOfDays's Avatar
You can do a quad that is more efficient, but if you want to build a lifter (for a reasonable payload) you have to try hard to beat the X8 with a hex, but you will never beat it with a flat octo, you will never be able to build a frame that lightweight (for a flat octo) that would allow to take advantage of the better prop efficiency. In this particular case you have to think of a frame that has a diameter of 2m(!) (that has to be done in a rigid way).

best regards
Ferdinand
Sep 10, 2013, 05:24 PM
Misfit Multirotor Monkey
Cyberdactyl's Avatar
Over/under counter rotating prop systems are always around 15-30% less efficient than allowing a single prop to have its own undisturbed and non-accelerated air.

http://www.humanpoweredhelicopters.o...sa-tp-3675.pdf
Sep 10, 2013, 07:07 PM
DroneWorksUSA.net
flohio117's Avatar
Quote:
Originally Posted by EndOfDays
You can do a quad that is more efficient, but if you want to build a lifter (for a reasonable payload) you have to try hard to beat the X8 with a hex, but you will never beat it with a flat octo, you will never be able to build a frame that lightweight (for a flat octo) that would allow to take advantage of the better prop efficiency. In this particular case you have to think of a frame that has a diameter of 2m(!) (that has to be done in a rigid way).

best regards
Ferdinand
yeah I see your point. are you going to use regular lipos for it or the Li-ion batteries?


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log B.A.D. Omega Project 30mm Jet Fighter +Video/plans X-1 & X-2 Freddie B Micro EDF Jets and Power Systems 241 Feb 08, 2016 11:09 AM
Discussion Project: twin 30mm edf with differential thrust. airfoil'd Micro EDF Jets and Power Systems 0 Aug 11, 2013 07:51 PM
Build Log 747 30mm EDF build hi2nr RC Airliners (Commercial, Cargo, Troop Carrier) 31 Feb 09, 2013 01:32 PM
Discussion Projects using 30mm EDF? mkcp40 Micro EDF Jets and Power Systems 22 Jun 02, 2012 11:22 PM
Wanted 3s 1800(ish)mah 70mm x 30mm x 30mm Toker Aircraft - Electric - Batteries & Chargers (FS/W) 2 Apr 10, 2011 07:58 AM