|Jan 31, 2002, 12:26 AM|
There have been many discussions over the last two years about this fan. There are at least 3 commercial models that use 2 of these. The consensus is 7 cells wired in series. Maybe 8 if you use nimh. They Draw about 12 amps, and produce ~2-3 oz static thrust per motor. Any more voltage on the standard motors will fry them. You can get upgraded motors that will take more volts, but don't produce a whole lot more thrust, maybe up to 5 oz total with a brushless system ($$$).
The 3 models are 2 different A-10 models and a S-3 Viking. Several members of this group have built similar size models. I'm currently working on a b1-b and an a-10. Stay around 12-17 oz all-up weight and you should be fine.
You can find more info on the fan by searching for kp44 or ejf200 on this forum or on these web sites.
|Jan 31, 2002, 11:36 AM|
thanks for the help i didn't know that the kp fan was also known by other names
I was thinking of doing an Northrop a-9, a gloster meteor or even a su-25 frogfoot (to go up against all the a-10's and me262's out there)
|Jan 31, 2002, 11:53 AM|
It's more commonly known as the KP44, since it has a 44mm diameter. Whatever you build needs to be extremely light, due to the low thrust output. It's also relatively slow. I haven't been able to scratch build anything yet that's airworthy for more than a minute, but I'm getting some crazy idea of putting a pair on a mini-IFO, just to be the first one to use EDF indoor over here.
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