SMALL - Telemetry SMALL - Radio
Thread Tools
Old Jul 29, 2015, 09:06 AM
seng30904 is offline
Find More Posts by seng30904
Registered User
seng30904's Avatar
United States, SC, North Augusta
Joined May 2007
145 Posts
Discussion
Help needed determining amps, thrust, pitch speed

I have a Hacker C50 12XL with a 6.7/1 gearbox. I am using a 20x12 carbon folder on 8s. My motor calc does not list this particular motor, so I don't have any idea as what to expect for amps, thrust, pitch speed etc. This was the recommended setup for my sailplane. If anyone has a motor calc that lists this motor, would you plug in the numbers and let me know what you come up with? Thanks
seng30904 is offline Find More Posts by seng30904
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 29, 2015, 09:51 AM
ZSJAF ZSJAF is offline
Find More Posts by ZSJAF ZSJAF
Registered User
Joined Apr 2015
13 Posts
http://ecalc.ch/motorcalc.php?ecalc&lang=en

It has your motor and I plugged in the numbers but it did not look right to me. Check it out.
ZSJAF ZSJAF is offline Find More Posts by ZSJAF ZSJAF
Reply With Quote
Old Jul 29, 2015, 10:07 AM
seng30904 is offline
Find More Posts by seng30904
Registered User
seng30904's Avatar
United States, SC, North Augusta
Joined May 2007
145 Posts
Quote:
Originally Posted by ZSJAF ZSJAF View Post
http://ecalc.ch/motorcalc.php?ecalc&lang=en

It has your motor and I plugged in the numbers but it did not look right to me. Check it out.
I didn't see my motor listed. Closest motor I found was the 13XL
seng30904 is offline Find More Posts by seng30904
Reply With Quote
Old Jul 29, 2015, 02:29 PM
ZSJAF ZSJAF is offline
Find More Posts by ZSJAF ZSJAF
Registered User
Joined Apr 2015
13 Posts
Sorry that was what I was looking at
ZSJAF ZSJAF is offline Find More Posts by ZSJAF ZSJAF
Reply With Quote
Old Jul 29, 2015, 03:31 PM
mustflynow2 is online now
Find More Posts by mustflynow2
The Sequel
mustflynow2's Avatar
Australia, VIC
Joined Sep 2011
1,621 Posts
Nice motor
http://www.hacker-motor-shop.com/e-v...&t=3&c=41&p=41
mustflynow2 is online now Find More Posts by mustflynow2
Reply With Quote
Old Jul 31, 2015, 02:04 AM
scirocco is online now
Find More Posts by scirocco
Registered User
scirocco's Avatar
Australia, ACT, Kambah
Joined Feb 2001
3,756 Posts
The B50-12xl in http://brantuas.com/ezcalc/dma1.asp is close. I adjusted the Kv and idle current to Hacker's specs and got 57A /1600W in, 5500 rpm, 62mph pitch speed. Predicted static thrust around 280oz
That should be in the ballpark because 10S predicted nearly the same figures as published on the Hacker site.
scirocco is online now Find More Posts by scirocco
Last edited by scirocco; Jul 31, 2015 at 06:24 AM. Reason: added static thrust
Reply With Quote
Old Jul 31, 2015, 07:59 PM
seng30904 is offline
Find More Posts by seng30904
Registered User
seng30904's Avatar
United States, SC, North Augusta
Joined May 2007
145 Posts
Thanks for the help Scirocco. I didn't think of adjusting Kv/idle amps.
seng30904 is offline Find More Posts by seng30904
Reply With Quote
Old Aug 01, 2015, 02:44 AM
scirocco is online now
Find More Posts by scirocco
Registered User
scirocco's Avatar
Australia, ACT, Kambah
Joined Feb 2001
3,756 Posts
That's a beast of a powerplant - what's it for?
scirocco is online now Find More Posts by scirocco
Reply With Quote


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Jeti, Emcotec, Hacker, Cortex, MarkusR + Variable Pitch & Thrust Vectoring = Awesome Esprit Model Radios 1 May 21, 2015 06:50 AM
Discussion need help determining what i need to do to fly mirorless with my tarot 650 x8 up patrickrebstock Multirotor Power Systems 0 Oct 07, 2014 04:12 PM
Question Need help determining brushless equivalent to a geared speed 400 ptgarcia Power Systems 6 Nov 29, 2011 01:56 PM
How to determine thrust from pitch and speed (advance ratio) Nethole Power Systems 5 Mar 09, 2005 01:45 PM
Which gives more thrust? More pitch, less speed, or more speed, less pitch? Hogster Power Systems 6 Jun 13, 2004 02:08 PM