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Aug 05, 2019, 07:37 PM
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FMS 800 V-tail




I have taken the FMS 800mm V-tail apart for some pictures .

A) There are a lot of similarities to the Ezio 800 , HK may have taken liberties . Especially as the prop is exactly the same .
B) Servo leads are SHORT !
C) 6A ESC
D) I think this model is intended as 2s around 350/450mAh
E) 2 servos take care of everything
F) V tail control rods were - WAY - Way - way out ( pre formed ) .. Not sure who was on the job that day - but I had to re do it , and it is tricky .
G) V tail is in 2 parts and needs gluing in place
H) Wing is held in place with a single screw . ( Philips head ) A hex screw would be better .
I) That prop !!!!! = Same as on the EZIO 800 , which was useless !

First thing I will do is check how much thrust the motor prop combo produces ( check current as well )
If thats ok , I will move onto soldering up a 4ch FS2A Rx .. and then assembling the FMS 800 V-tail trying for a decent CG ..
I have a small assortment of batteries to try ..

UPDATE

Current draw on a 2s = 4.7/4.8A to a peak of almost 5A
Thrust seems to be ok , looks like this motor might turn higher RPM on 2s
CG = No way ..
CG is sweet less Rx and battery ..
Will need weight in the tail or it will be nose heavy .
Just about to solder up a Rx now .

UPDATE 2

Rx is soldered and in place
Everything has been trimmed ready for CG Games ..

Seriously , the CG is perfect without a battery ...
Flying weight ATM with a Nonotech 370mAh 2s is 154 grams , but the CG is 25mm from the L/E
Power to weight . might be around 80%
There will be required weight in the tail for CG , which should probably be around 40 to 50mm from the L/E
Hmmm , what does the FMS manual say ? ( FMS say's 35mm from the L/E )

Last edited by old4570; Aug 06, 2019 at 12:27 AM.
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