Help! Julius Perdana's A-10 warthog

[PlaneBuilderFlierCrasher]

Hello everyone,
I want to build Julius Perdana's A-10, but he hasn't posted a video of it flying yet. Has anyone built this specific model, and does it fly? And what about his other models. Are they reliable too? I don't want to spend all of this time and money building it to find it doesn't fly well. Any advice?

 

[AIRFORGE]

No personal experience, but he does have a short crash vid for it....

 

[bisco]

ouch

 

[PlaneBuilderFlierCrasher]

Yeah, thats what's keeping me from building this thing yet.

 

[bisco]

that's your brain ruling over your heart

 

[bearit]

I built his F22 and it was awesome.

 

[PlaneBuilderFlierCrasher]

I built his F22 and it was awesome.

Is it easy to fly? for context I just got off a FT simple cub

 

[Shurik-1960]

All these models fly perfectly.Now I'm redesigning the SU-57 for 2 pusher engines with 3 bladed propellers.

 

[bearit]

Is it easy to fly? for context I just got off a FT simple cub

It was, But clipped a fence on landing on about the 10 th flight shredded it going to build another soon.

 

[FlyerInStyle]

I built his F22 and it was awesome.

I have one, and it flies really nice, but the bank and yank was something it took me a bit to get used to.

 

[PlaneBuilderFlierCrasher]

Thank you all! this really helps. I think I am going to go ahead with the A-10 sense all his other models sound like they work, and just add an angle to the motors to prevent the down-pitch tendency. It should be easy enough to fly sense it's quite big and bulky.

 

[smizt]

is this guy's f35 good?

 

[FlyerInStyle]

is this guy's f35 good?

Honestly any of this guys planes are worth a shot

 

[Shurik-1960]

I really like the models that Julius designed, and many of them are already in my hangar. All of them fly perfectly with the correct configuration of the CG . But I don't make the model strictly according to the drawings: I strengthen the nose of the fuselage with a fishing rod, I make the wing from my own experience....When you first launch a new model, you need to do it without turning on the engine.. When you achieve the perfect non-motorized flight of the model, start with the engine and adjust the correct engine deflection (left and down) . As a result, the model will fly "like on rails".

 

[smizt]

What foam did u guys use to build it? I cannot find depron foam in my region, only extruded polystyrene foam boards. Will they work? Im mostly afraid of curved surfaces and durability. Pvc foam is also another option but it is 4x the cost

 

[Shurik-1960]

It doesn't matter what material you are building the model from. Important: the model must be lightweight and durable. I used to cut large foam blocks into plates with a thickness of 3 and 5 mm.Then I bought ceiling tiles.Now I'm buying a 5mm thick modeling material.

 

[quorneng]

PlaneBuilderFlierCrasher​

There is nothing in the A10's configuration that would deter it from flying. A straight wing and conventional tail surfaces. Its only oddity is the location of the engines but that only requires the CG to be correct. As Shurik-1960 points out its lightweight that will have the biggest effect of how well it flies. Its durability will impact on how long it lasts. Getting the right balance between these two is the clever bit.

 

[Thomas B]

Even with the CG in the right spot, an A-10 model can be challenging to fly at low airspeeds while making large throttle changes. The aircraft can pitch down significantly when throttle is quickly increased for a go around after a landng approach.

Once you know about this, it is not too bad to deal with. Angling the engine nacelles up a few degrees helps with this.

One a couple of small A-10 ARFs, I have also added several small vanes inside the rear of the engine nacelles that deflect a little of the EDF efflux up, which helps counter the nose down pitching moment of a large throttle change at low airspeed.

The pitch down effect from the high mounted fans is not noticeable in normal flying at normal airspeeds.