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Testing an edf

#1
Hi
I don’t have a lipo yet but got a 6 cell 7.2v nihm could I do a quick fire up with the edf on the ground before I get a lipo
Many Thnaks
 

DamoRC

Well-known member
Mentor
#3
I don't think there is much to learn by running the EDF using the NiMH pack at 7.2V. If this is the same EDF that you have described in the other thread on ESC sizes, and you intend to run it on 3S lipo, (nominally 11.1 volts, fully charged 12.6 volts) then the only thing you will learn is whether the motor actually runs or not. You won't really be able to extrapolate forward to total current draw or thrust.

DamoRC
 

DamoRC

Well-known member
Mentor
#5
It discharge rate 3000 mah
mAh is the capacity of the battery - milliamp hours. Simply put, the pack can theoretically deliver 3000 milliamps for 1 hour, that's 3 amps for an hour.

The max discharge rate is the max amps it can deliver under load which I believe is a lot lower for NiMh than Lipo.

DamoRC
 

d8veh

Well-known member
#7
It will show you that the motor turns, but that's about it. Bear in mind that for some ESCs you need to set the low-voltage cut-off. If it's set for 4S, it won't run on 7.2V.
 
#9
Thank you I have had the 40 amp esc now and next I am going to get a 2200mah 3c lipo for it should I stick to the XC60 connectors
Thanks
 

DamoRC

Well-known member
Mentor
#10
Yep - the XT60s are pretty standard and will work for this.

For the battery you are getting a 3S 2200mAh - try to get a 35-40C at minimum. They may be a little more expensive but a lower C, cheaper battery will need to be replaced sooner costing you the price of a new battery.
 

DamoRC

Well-known member
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#14
By "standard" I assume you mean a jet that will use the 64mm EDF you have? About 30 - 35 inch wingspan.

10 x A3 sheet is about the same as 3 of the dollar tree foamboard (20 x 30 inches) so 10 x A3 should just about do it. Do you have a plan you are working with?
 
#15
By "standard" I assume you mean a jet that will use the 64mm EDF you have? About 30 - 35 inch wingspan.

10 x A3 sheet is about the same as 3 of the dollar tree foamboard (20 x 30 inches) so 10 x A3 should just about do it. Do you have a plan you are working with?
Yeah I am still trying to find some planes of a jet similar to f 18 and f 16
Thanks
 

DamoRC

Well-known member
Mentor
#18
What about a scaled down version of @Mid7night F-16?

Probably good to get a handle on what your thrust is going to be with the 64mm on 3S - this will influence the size of model you will be able to fly.

DamoRC