Dave Wilshere

Been getting on with the wings between family stuff. The airbrakes are done. Ailerons done, need to glue the wing flap hinges into the flap and the horn in position. I cut down the Flap horn too, I wanted a decent flap angle and with the Flaps hinged on the lower surface, it needs a horn set back from the hinge line.
Dw

Dave Wilshere

Pictures on RCU are such fun these days!

chrigui

nice photo..

i finshed my wings and is slightly different than yours...
the airbrakes in not full resin in the horne position but empty..
the servo wood support are little...

i changed the position of gear door air cylinder (respect the LUCIANO vampire) due to not touch the main wheel
i reduced all horn hinges

Dave Wilshere

Nikon [8D]

Yes, the wood supports are quite small in most of the surfaces, but this is OK as they designed the horns to go full depth between both skins of each control surface.
Wing servos are JR 8411 Ailerons, JR8231 Airbrake and JR8305 Flaps. Only the aileron requires an extension lead of 200mm.
I have not worked on the gear door yet, but will probably change the air rams to larger diameter cylinders (personal taste)

Dw

chrigui

OK...i post my photo today

chrigui

air door cylinder

Dave Wilshere

From the emails I have had, some have not seen the complete model, so...
It's 1/5th Scale, yet breaks down into very compact sections

Dave

chrigui

difference between Luciano model





and mine

fuselage servo flap position in my vampire

Dave Wilshere

Guess yours is an earlier kit?

Sure mine is the same as Luciano! Only wing at home, but I'm sure

Dave

chrigui

@DERJET : can you post some photo about fuselage flap servo position (myversion please) ?
can you post some photo about internal installation? (rx, pump, powerbox or similar?)

Dave Wilshere

DerJet are in Chinese New Year till next week.
Everything forward! Which turbine will you use?

I think the linkage will be vertical on your flap, Long servo horn facing back and a small horn glued to the flap.

Dave

chrigui

i think yes...but the servo support must to be glued on fuselage and the fiberglass is not rigid

i think to test the vampire with 85N engine but the performance will not be good i will change
to 160N home build detuned to 100N - 120N

Dave Wilshere

I think 95-100N enough for smooth scale flying, but 110-120 for scale speed flight.

Did you get a wood frame for servo mounting? This will add a lot of rigidity

Dw

chrigui

i prefere the scale flight...like my carf mig-15 with 80n trust

i will check if the servo dimension are too big or not to fit under the flap..

storrie23

Hi Dave
I am using a Rabbit in my Vampire, should fly very scale.
Chuck

Dave Wilshere

Chuck

Yes, light and powerful!

Dave

chrigui

I check the dimension and there are not the space to fit 6/8kg servo in this room

Gonzalo38

Are there any Derjet Vampires already flying ? Videos ?

Dave Wilshere

I guess that is why they changed the design! Maybe cut a new servo hatch?

Gonzalo38

Only prototype I know of, several being built to fly in the next month.

chrigui

@DAVE...

i would not spend over time to modify the vampire but.....i must to do!!!

can you give me some photo about right position and internal servo box (wood reinforce or other)???

Rider-60

My Feedback: (17)

DS 3288 may be? http://www.graupner.de/fr/products/5187/product.aspx

Gonzalo38

What about the Hitec HS-125 (5125 for the digital version) or the Futaba 3150 ?

chrigui

i must to do a choice

1)try to fit ds3288 7,6kg 6v
2) open nex servo box

hs-125 no sufficent torque for flap

Dave Wilshere

DS3288 will work I think

regards

Dave

Dave Wilshere

Having got back to the build, I found the wing flap on the second wing was very slightly distorted. If I wasn't so fussy I could have fitted it as it was, but the slight twist would have meant the lower surface would not match perfectly, with the top section lined up.
I decided to split the flap with a razor saw (32 T/") and re-bond with aeropoxy while the flap was weighted down over night. On the ground you will not see the cut.

Dw