SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jun 04, 2010, 07:31 AM
Here comes the rooster...
JesseB's Avatar
Joined Aug 2006
95 Posts
Discussion
BP2212/13 on 3S

All,

I just put a BP 2212/13 on the Dipstick, and noticed that the current with a 10x4.7 slow flyer prop was over spec for the motor's continuous current. (3S lipo) This is Millennium's recommended set up.

It was late when I did the test (not sure my sleeping wife appreciated the noise), so I can't tell you exactly how many amps over spec it was, but it seemed a fair amount. I put a 9x5 APC on it, and it drew 12.8 Amps. BP specs the motor at 13 Amps for 60 seconds maximum, so it appears that this is the biggest prop I should use.

What's everyone's experience with this motor on a 3S set up, at various prop sizes?

Thanks
Jesse
JesseB is offline Find More Posts by JesseB
Reply With Quote
Sign up now
to remove ads between posts
Old Jun 05, 2010, 02:45 PM
Not your average DiggsyBear
Diggs's Avatar
Raleigh, NC
Joined Dec 2006
8,859 Posts
Jesse,

I haven't used that motor before but can tell you that a static test will draw more amps than the plane will while in the air since the plane is moving and there is less resistance/drag on the prop.

Lots of prop data here
http://www.bphobbies.com/view.asp?id...7&pid=B1688512

Looks like the 9x5 is a recommended prop so I would fly it with that and just make sure it doesn't run so hot you can't touch it when you bring it down.

Diggs
Diggs is offline Find More Posts by Diggs
Reply With Quote
Old Jun 05, 2010, 02:50 PM
The "K"minator
Crazy Eight's Avatar
Frostbite Falls,MN
Joined Sep 2006
2,223 Posts
My buddy Jake posted an Eagletree graph http://www.rcgroups.com/forums/showthread.php?t=894416
Crazy Eight is offline Find More Posts by Crazy Eight
Reply With Quote
Old Jun 06, 2010, 09:18 AM
Here comes the rooster...
JesseB's Avatar
Joined Aug 2006
95 Posts
Thanks guys. I'm gonna' have to try it again. That graph's data shows the 10x6 as safe.

Jesse
JesseB is offline Find More Posts by JesseB
Reply With Quote
Old Jul 04, 2010, 02:23 PM
jkarpy's Avatar
USA, FL, Orlando
Joined Aug 2006
2,022 Posts
10-4.7 is safe

I have been using this setup for more than two years. The 10 4.7 is the rite prop. BP's specs are over conservative. 20-21 amps static is normal.

James
jkarpy is offline Find More Posts by jkarpy
RCG Plus Member
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion 13" wspan Peanut Spitfire based on reduced Comet Plan hklam Free Flight 30 Aug 16, 2010 08:34 AM
Discussion what is more powerful a js1400 on 3s or HET 2w25 on 6s? sherlockshah Electric Ducted Fan Jet Talk 6 Mar 04, 2010 06:59 PM
Sold Two LN 800mah 3s Turnigy 20c Batteries $13 Shipped typhoonmaster Aircraft - Electric - Batteries & Chargers (FS/W) 3 Feb 15, 2010 10:11 PM
Build Log Super tiny hotliner! "Speed Stick" Now with plans on post 13! all4smallrc Scratchbuilt Indoor and Micro Models 93 Nov 09, 2009 04:30 PM
Discussion How to get 13 minutes on a Pro 2 n6nev Micro Helis 5 Sep 03, 2009 08:05 PM