msarid

Hi all
I am thinking about build a new x-frame from C\F and use 4 GWS motor GW\EPS-300DS prop 11X4.7
What do you think? I want to use the VTi board
Moti

http://www.gwsus.com/english/product...em/eps300c.htm

Old Man Mike

The x-frame is nice but I doubt you will get that motor to work with DF. 4 of those motors with that prop will draw over 20 amps for the voltage output from the controller. I'm assuming that is a brushless motor which is a somewhat difficult redesign task (see brushless motor thread).

Mike

msarid

Hi mike
This is not a brushless motor, the motor is the same brushed motor as the D\F (i have one) the gear is 6.6:1 close to the D\F gear.
we can find in the site(http://www.gwsus.com/english/product...em/eps300c.htm) a set that can match the D\F board.
the GWS is more rigid and can reduced the motor vibration and the prop hitting the frame.
Please advise
Moti

Old Man Mike

OK, if it is a brushless motor, you might be able to use it. The Power MOSFETs have a lot of current margin but you will have to add heat sinks. I have tested the GWS 6.6:1 gear box with various brushless motors and have found that the EP 1260 prop can produce 8oz of thrust with only 2 amps from the normal DF battery using the right motor. The problem is that you have to have a pair of matching "pusher" props to work on DF. Remember that two props are right hand (normal design) and two props are left hand (pusher). The only props I have found close to the right size that are available in both types is the APC 9x6E and APC 9x6EP combination. These are really a little too small for best performance with the 6.6:1 gear box and the motors I had tested but might be worth considering.

Hope that helps,

Mike