Thread: Discussion Multiplex Funjet Ultra
View Single Post
Old Oct 15, 2012, 10:16 PM
nofreee is offline
Find More Posts by nofreee
Registered User
nofreee's Avatar
United States, CA, San Diego
Joined Jan 2012
294 Posts
Originally Posted by GryphonRCU View Post

I think that your setup has a fair chance of reaching your goals.....but I'm not sure about the required prop size.

Consider starting off with 75-80A static with a 1:1 prop size (diameter to pitch ratio).

If you have Graupner 5.2X5.2 post the static data before first flight and wait for feedback from the folks on this thread.

***Maybe the guys who are more familiar with that same motor on 4S can recommend a better prop.

If you have one of these APC 5X5 , 5.25X4.75 , or 5.5X4.5 then maybe that data can help the folks recommend a good prop for your first flight.

Run a heat sink and use throttle control till you get the hang of the motor temps.

Static testing:
Do only a single 3 second static test starting with the motor at room temp.
Report data from after the first any 2 of these 3 values (A, V, W)
To do another test or re-test wait till the motor is pretty close to room temp.
Be safe.

Good luck,

Finally had a chance to get everything assembled and run some tests.

APC 5x5 - 60a 850w
APC 5.25x4.75 - 70a 950w
APC 5.5x4.5 - 75a 1000w
Graupner 5.5x5.5 - 80a 1085w

However, these tests were on done on 4s 1600mah 35c batts. I need to re-solder the connectors on my 4s 2650mah nanotechs and do it again tomorrow.

This was for the following setup.

HET 2w-23
Hobbywing 80a ESC
4s 2650 35-70c
nofreee is offline Find More Posts by nofreee
Reply With Quote