DelGatoGrande

My Feedback: (23)

Hey Sonnich!
are the models balanced lateral? from nose to tail...while models is resting on the weels lift at the same time from centerline nose and tail.
both wings must go up the same / if one wing drop it is heavy. add waith to the other..

tp777fo

My Feedback: (28)

Thats exactly what I finally did, worked great. Tried to fly it again the other day but had trouble with my motor. All fixed now and just waiting for the right conditions....(off work)

steveline9

Just weighed my hawk guys and it comes out at 29.3lbs with full cockpit, gear doors and UAT full. Seems quite heavy to me. Also i have 8kg torque futaba non digital servos on the flaps, do you think these are up to the job.

Cheers
steve

tp777fo

My Feedback: (28)

Mine weighs 30# dry. I have JR8411s on the flaps. I think you will be just fine. Just remember dont extend the flaps during high speed. Don't know what kind of scales they use in China but they seem to read a little on the light side.

steveline9

Think you are right about the scales, even without the gear doors there would not be any way to save weight. I have had to glue the rx batteries onto the insides of the nose either side of the gear hatch to balance the model. Even with them there it still required a little nose weight. Here are some pics of the model completed.

bigplumbs

Looks very nice indeed............ I assume the elevator is not at nutral in those pics as the trailing edge needs to be level with the top of the fuz

Dennis

steveline9

Thanks Dennis, Forgot to position the elevator at neutral for the pics.

tp777fo

My Feedback: (28)

Finally got the chance to fly it again....excellent flight. Smooth takeoff, great roll rates, very stable throughout the entire flight. I had to add a little up trip but the roll was right on. With the cg per SM the stab is about 1/4 below the top of the fueslage shelf. I broke a gear plate out again (recurring problem) on the right wing but should be ready again in just a few days. After all the problems I have had betting this airplane airborne it now seems to be a "keeper"

DelGatoGrande

My Feedback: (23)

hey boys!

this is how i placed engines goods in the hawk...unter the rear cover!

[8D] mary christmass 2 all

tp777fo

My Feedback: (28)

Dont get slow in the landing pattern, I did and it snapped out of the final turn. Rolled over and started spinning, I added a couple clicks of throttle, let go of the elevator, counted 3 potatoes and pulled. Here it comes climbing from under the tree line. I landed, cleaned out my pants and went home. I am going out now to try it again. Gotta love south Texas weather...70 degrees and light wind.

larshkj

Hi guys!

Some questions to all you Skymaster Hawk owners.

I have a Hawk Plus Pro (Red Arrows scheme) on the way. I also happen to have a Simjet Nexus sitting at home.
Seems like most of you use P120 or similar in you Hawks. My Nexus is roughly 300 grams heavier than the P120.
I'm not worried about the extra power output from the Nexus, I will rate it down slightly. But I'm worried about the extra weight.

Do you with P120's have extra weight in the nose?
Is the turbine located far behind the center og gravity?

I've also seen some posts complaining about wing dropping on flare. Does this seem to be a common problem?
Have anybody tried to mix in a little up ailerons or crow in the landing configuration?

Thanks in advance for any answers!

Lars

steveline9

Hi Lars,
i have the arf plus hawk with simjet 2200. The turbine starter motor front is pretty much in line with the CofG and the model needed 2x4.8v sub c rx packs in the nose, 7.2v sub c ecu pack at the nosegear former and some additional lead up front.
This model is yet unflown due to the good old british weather but i had the MK1 hawk which was very stable in the air with very precise flying charecteristics although speed needs to be kept up in the turns. Mine did not drop a wing at any point although i had limited flights before i bought the arf plus.
Another talking point is flap deployment which is covered in other threads in detail on RCU. This is a very nice flying model.
Hope this helps.

Steve

larshkj

Thanks Steve.

Do you know the dry weight of your Hawk?

Lars

steveline9

It weighs in at 29.3lbs.

steve

E.N.T.

My Feedback: (1)

Hi! Guys. Happy New Year. I have a question for all,
Is the FeiBao 120 Hawk the same as this?
For what I know they made the Hawks for SM before.
I'm just asking because I have a FeiBao one almost ready
for action, and I've been following this thread since the begining.

Thanks to all.

Hector

Edgar Perez

My Feedback: (13)

Hector
I don't think its the same. I think it was Spark who made the original skymaster ones. Sparks = Jet Legend.

However I do think you need to test the flaps carefully (go high, drop flap, confirm elevator control. If not, quickly bring flap up)

perche

Hi guys!

I just got myself a Skymaster Hawk mk1.(the old one) its not built. I dont have an engine for it, but im looking at an used Simjet 2250. It has a brand "new" fadec 2002 ecu.

Is this an engine that you would recomend for the hawk?


Thomas

Cleofox3

Hello Hector,

I fly the Feibao Hawk, and if you need any help or settings, just let me know.

What I can say is, as Tom said, DO NOT EVER let it become too slow in a turn, keep a shalow descend angle in the base turn, with approx 1/3 gaz and always having the nose a little bit down.
Start raising the nose little by little during the straight final leg, and go Idle if deemed necessary. Plan to have a long and stable final leg.

My Hawk lands 'medium' fast, I have no airbrake to let it become slower, and with power fully reduced, it still glides pretty good without getting much slower in final.
The touch down is smooth, so that sometimes it bumps back in the air (I fly on a grass field). On the first attempts, if this happens, go full power again and try a second approach.

For Take-off, do not force it to fly, merely let it take-off by himself. If you pull it too early, it might well brutaly stall on one side. It happened to me once, I could still control it with the ailerons, but then you need 2 good minutes to come back to some normal heart beating rate!...[]

Once airborne and flaps are up, it lies very stable in the air, absolutly no problems to handle. I still have respect with vertical and slow maneuvers, as with slow speed and high AOA, it always has the tendency to brutally stall on one side. If this happens, just add power, elevator neutral to slighly forward, count 3 potatoes, and start pulling smoothly again. It comes back very gently, but it needs this 2-3 seconds phase, to let the aerodynamic be ok again.

I fly it with a Jetcat P-120, and it is just great looking in the air.
Wish you all lot of fun with your Hawks, and not too many stalls!....
Many happy landings
Cléo

bigbaggy

Easy fix would be to reflex the aileron trailing edges up a few degrees (Crow). It will effectively change the camber of the airfoil and shift the stall angle of attack a little higher than the root. Check the static balance of the wings and see if there is any twist built into the respective wing panels.

perche

Simjet 2250 in the hawk ??

Thomas

steveline9

22lb thrust will be fine. Flew the mk1 hawk on this engine and it went well. these hawks fly well on a P80.

acw

My Feedback: (1)

So has anyone actually tried crow on a FeiBao / Skymasters / Tamjet Hawk? If so, did it help landing speed?

Thanks

Arnaud

jseppanen

Answer to first Q: Yes, Skymaster Hawk. Second Q: No, not really the speed but it makes the touch down point more predictable ie. it's easier to fine tune the final aproach with throttle...

larshkj

How much up aileron did you mix in? (not percentage)

Lars

jseppanen

About 10mm up aileron with max flap deflection.