geh3

My Feedback: (84)

I am progressing with the decorating of mine ( T-45 ) sport version..
does the graupner tank fit OK? what is it's capacity? post some PICS please! THANKS

digitech

My Feedback: (10)

here is a picture

it is 3,6 liters so almost a gallon..
i hope it fits right away..

Dave Wilshere

I have a tank, I'm sure you should both have one too.
The Composite ARF tank fits perfectly
The Graupner one will fit though.

Sandor emailed some answers and pictures.

More please email me

regards

Dave

digitech

My Feedback: (10)

some pics from the Gear i made for it..

needed to make some changes to it , playing with different springs , making adaptors.
the gear is extremely light , it is about 1.2 kilo’s give or take .

oleo’s you see are still in "raw" state not anodised or final finish (tumbler& anodising).
spring is almost correct can carry about 10-11 kilo’s until it has its correct height..
question is on rollout especially on grass , trailers have the tendency to go more backward , causing CG-gear to shift a bit , causing "heavy nose" rotation.
we noticed this on the more heavy boomerang XL,s witch would do the same..
we are planning going on a short holiday in France and fly this for 1 week strait.. and test different springs..

digitech

My Feedback: (10)

Finished the wing today..

extremely light i must add.

Wing: 3300 gram incl 4 servo,s , landing gear , tubing and door cylinders...
Fuse: 6600 Gram , incl nosegear , tank , turbine , servo,s , electronics.
however we are NOT using powerbox , we are keeping it a sportjet version.
therefore LIGHT.
we measured the model today and came to a very conservative 11,4 kilo,s dry weight..
wich is not bad considering my Flash weighted 12.1 kilo,s dry weight incl a P-120 and some fuel left.
needed to make more changes to the Landing gear , the pointy oleo door seems to make some small problems.
i used :
2 x 8511 on the elevator
2 x 8411 on the ailerons (overkill but i havent got anything else)
2 x 8511 on flaps (needed , since the control horn on the flap is very short , you need momentum).
1 x 8411 on rudder.

i concluded i will be using the Merlin 90 in this model
i also used a Titanium thrust tube.

pictures soon ;-)

dubd

Is this plane available in the US yet?

Dave Wilshere

Dubd

The first kits have shipped in the US. More are on the way now.
These aeroplanes shown are the very first series, full production is just about in top gear now.
The first flying aeroplane was shown at FJ.

regards

Dave Wilshere

Dave Wilshere

Here are a few shots of the Hawk wing/gear/flap set-up

Dave W

digitech

My Feedback: (10)

Hawk Ready

weather permitting , this weekend first flight.

weight : 11,6 Kilo Dry weight No fuel anywhere..
incl engine (P-160SX)

stuff used:


Graupner A123 2300 x 2 for receiver
Emcotec B.I.C for power distribution
2 x 8511 elevator
1 x 8411 rudder
2 x 8511 flaps
2 x 8411 ailerons
JR 12X receiver 2,4

Gear:

door cylinders : 2 inch Jet-1A 60N
main retracts Jet-1A
Wheels Jet-1A 125mm main
65mm front
Oleo,s Pro-Lynx custom made
Airpower Sequenser fail safe series in mode 1
2 x 2 way valves Airpower
1 x Brake valve Airpower

Engine :

decided to go for a P-160-SX , since we get lots of power on low rpm , good for noise Reduction
the weight can have it

thrust tube :

replaced stock one with titanium one saves about 450 grams

geh3

My Feedback: (84)

Nice! did you have to add dead weight up front to achieve CG?

Where did you get the lighter thrust tube from?

Please post some pics of your Turbine install...

THANKS

digitech

My Feedback: (10)

no weight needed
i HATE lead or anything extra to level it out..
i will laser a new part if needed but not extra weight.

will post more pics tommorow

thrust tube (inside) comes from AMSW (Andi Mayer Special Works) :-) at jetcat

geh3

My Feedback: (84)

Thanks, I ordered a lighter tube assy from TAMJETS, the one from C-ARF was not optimized for weight
I'm using a WREN 160, more than I will need but that's what the throttle is for (I like good vertical performance)
I would lOVE to fly soon BUTY all I need is a fuel tank, radio tray, retracts etc... soon I hope!

digitech

My Feedback: (10)

pics:

o yes FYI i used a Elan /Fuel tank 3,7 liter much better to fit somehow and use the original for smoke

on the picture you can see the "floorboard" holding the main tank .
the turbine is not covered by a full ducting , just a half one to keep the flames inside the tube.
advantage is it creates lots of space for a smoke tank right on the CG..

geh3

My Feedback: (84)

Were you able to balance without adding weight?
where IS the CG anyway?

Dave Wilshere

I'll measure and give you a C of G.

Here are some shots of the Composite ARF wheels and struts

Dave W

geh3

My Feedback: (84)

Impressive collection of screwdrivers you have there!

Dave Wilshere

Quote
Impressive collection of screwdrivers you have there!


They are a mixture of allen, screw and nut drivers..only a fraction shown-you need 3 of everything so you can always find one!

Dave

GrayUK

Nice job Dave.

Paul

digitech

My Feedback: (10)

Maidened ours today with no luck....

result was a totalled Hawk.

no idea what happened , take off was nicely.
totaly uncritical , and a touch of up and she went up.
little sensitive on elevator , but ok.
on the first turn i set the elevator to 70% made a small turn to trim the elevator and went nose in.
it did it at a real suprise and completely weird behaviour, just like a stall , but we had to my opinion enough speed.
i have no idea yet if it was a radio faillure or something else.
all electronics , turbine has no damage at all , but airframe exept for elevator , landing gear and rudder is lost..

GrayUK

Sandor, [&o][&o][&o][&o][&o][sm=cry_smile.gif]

Sorry about your loss.

You say you made a turn, did it flick?
Had you taken takeoff flaps off?
Did you have any radio functions?

Paul [sm=sad_smile.gif]

digitech

My Feedback: (10)

yes it just flicked over , i felt i still had control i managed to turn it again but was to low to recover.
i think i still had not enough airspeed , but from the other hand i had set it to about 45% power on a p-160 that is more then enough to fly it.
like is said it is weird , it did not warn me about slow speed or been slow or none responding.
it did had elevator on full up after we salvaged it and was stuck there.
will check tommorow if something was wrong there.
it was mechanical stuck , and the carbon tube that guides it was snapped of.
no damage to be seen outside of the elevator.

GrayUK

Whats the news?

Paul

digitech

My Feedback: (10)

no idea...
i spoke also to Thomas Singer , he does not understand eather, since it is a very forgiving airframe..
i think i blame it on :

being to Slow... and flicked out i must say there was crosswind when this happened.
what could also have happened , if the gear is out , the huge doors can cause also like 2 spoilers.
together with that crosswind it might caused it also to push it out of direction..

as much as i hate to say i think it was anyway a pilot error..
Hawk was never my cup of tea , but then i like the model very much..
it was not a radio problem , the turbine was never on failsafe or anything.

geh3

My Feedback: (84)

On my plane, I plan to eliminate the inner LG doors and put air tight "tubs" in like those on the "Flash"
I am doing this to eliminate air cylinders etc and the outer LG doors are linked to the LG struts
The front doors operated by a small 180 degree landing gear servo and these can be closed
when the LG is "down"... it IS a sport plane!!

digitech

My Feedback: (10)

i dont think you can

look at the way they rotate towards the inside

the retracts are not 90 degrees and also tend to lean to the back..
i have thought of the same , but wont work.
you need the doors...