crazyf3a

Hallo
Can someone tell me the wingspan of the Full Composite Integral. On Composite website the span is 182cm. is this correct. I think it is to small.
SR

CHV69

I measured the actual plane and the over all wing span is 187 cm (73 3/4")


Carl

crazyf3a

Hallo Carl
Thank you for Info.
SR andreas

awat65

My Feedback: (17)

Here are a few pics of my Integral with the Hacker C-50 14xl intall.

Tony Watkins

awat65

My Feedback: (17)

A few more pics.

Tony Watkins

Malcolm H

Hi Tony,

I would like to see a couple more pics which show your airflow management especially through the battery space. It looks like you bring the battery cooling air in from the front of the underbelly, up through the battery compartment and then back down into the underbelly to exit. I asume you have an air dam in the centre of the underbelly as well as one in the fuz at the rear of the battery compartment?

Thanks

Malcolm

awat65

My Feedback: (17)

Hello Malcolm. Yes you are correct on the air flow. I have 2 air dams up front. one goes to the motor and the other goes up and to the batteries. Here in Arizona I flew the plane yesterday, the temperature outside was 105 degrees. The batteries were 106 degrees before I flew the plane. After a 7 min flight with the TP 4200 the batteries were 132 degrees. I do believe I could even keep the batteries cooler by making a deflector to blow the incoming air through the batteries. i will post more pics Tomorrow.

Tony Watkins

Malcolm H

Hi Tony,

132 F or 55 C is getting pretty warm though not drastically so. On the basis that you are measuring the temp of the outer cells in your pack I would try and get some more cooling air through there.

Look forward to seeing the pics.

Malcolm

cchariandy

I just got my Integral (all white version). It went together quite well straight out of the box. Some trimming at the wing roots may be required for a perfect fit and one elevator bumps into the stab TE...so there's no down elevator. It looks like the elevator LE was not properly trimmed/sanded.

Has anyone found any issues with the gaps at the lower surfaces of the wing and stab due to the top hinging? Does it generate any sound/whistles? Are the rolls axial?

Has anyone gotten the CG where Jason reccommends with 2-stroke installations (without adding weight)? Any special considerations?

Colin

CHV69

I had to sand quite a bit of the trailing edges both on the Wing and the Stab so they would not get caught and chip.

No noise that I can tell.

As far as Jason's CG point, I had no trouble getting the CG where he has it with an OS 1.40 RX. I placed the battery at the landing gear mount and the reciever at the Rudder servo.

For my taste I thought it was too tail heavy at 205 mm so I moved the CG forward little by little until it was in my comfort range, which ended up being 160 MM. That required 9 oz of lead on the firewall.

I am not real happy about that and will eventually get the CG further aft. Or move the Servos from the Stab to the CG.

I do recommend using a pushrod system and getting the weight from the tail and to the CG.

Carl

cchariandy

At Jason's CG location with the RX powered (9.5lb) plane did you have to push to maintain level inverted or did it drift up on its own?

Do you sand the TE of the stab or the LE of the elevator to fix the interference problem?

Colin.

CHV69

The elevator was completely nuetral inverted and it tended to climb on inverted 45 degree up lines set at Jason's CG.

Talking with people in my club they are not suprised at the way Jason set his plane up. He is an extremely good Flyer and Probably likes that nuetral feel.

I sanded both edges of the Aileron and Stab. Probably more on the wing then the control surface since that is what goes above the control surface.

I am not sure how quick you like you plane to respond to elevator input, but for me 205mm CG was way to twitchy.

I am in the process of building a carbon fiber push rod set to get those servos out of the Stab.
If I move them forward I can eliminate most of the weight I added to the firewall.

Carl

elan120

My Feedback: (1)

Carl,

Could you comment on how much down elevator you are using with CG at 160mm? I am having mine kind of around 195mm and there is hardly any down elevator needed in either inverted or 45 degree.

Kevin

CHV69

Right now with the CG at 160 mm. I put enough down elevator into it so I can feel it in the stick. Percent wise my guess is 10% down on the stick. Where you seem to be, is about where I was when I had 4 oz of lead on the firewall.

I had a friend of mine fly the plane and asked his opinion with 4 oz on the firewall. (Ron Lockhart) He is a masters pilot. He said I have my control rates low enough to make it sluggish but he thought it still tail heavy. He suggested I add enough weight at one shot to feel the difference. I did and that is how I ended up with 9 oz on the firewall. I will most likely start eliminating the weight as I become a more skilled pilot.

Carl

elan120

My Feedback: (1)

In my case, I have two onces of weight added in the tail which I am hoping to loose. I will try to play with it this weekend to see if I actually need them back there. Knife edge with current CG location requires 5% of up elevator with left rudder, and none with right rudder. Do you have any mix in your KE?

Kevin

CHV69

Yes 10% up elevator with rudder right and left.
What engine are you running that you needed lead in the tail?

Carl

elan120

My Feedback: (1)

I am running OS160FX with Aeroslave pipe. Two S9650's in stab, and a 2600mAh Li-Ion pack placed at the end of pipe floor.

CHV69

Makes sense. The 1.60 with a perry pump is 4 oz heavier than an OS 1.40 RX
The 1.60 with the header off the side keeps some weight forward while the rear exhaust keeps weight aft.

Your servos weigh .2 oz less then what I am using. I am using the Hitec MG servos.

Sounds like the same CG when I had 4 oz on the firewall.

How do you like the way the plane handles with your CG at 180?

I felt like I was a little behind it all the time. With the extra weight on the firewall moving the CG to 160 it is a little more tame.

What class are you flying?

Carl

elan120

My Feedback: (1)

The current CG location feels pretty good and I guess after 50 flights I am pretty much knows what to expect. On the other hand, originally I had NiCad but after replacing it with Li-Ion, I didn't noticed too much of negative effect, which prompt me to plan removing a little weight at a time from the tail to see if I will like it better. It is nice to know that you are running yours at 160mm, which gives me plenty of room to experiment.

Kevin

CHV69

What is the flying weight without fuel?

elan120

My Feedback: (1)

Mine turned out to be 10 Lb 6 onces without fuel, and the fuel tank is 16 oz.

cchariandy

Is that the weight inclusive of the balance weight in the tail?

That's nearly a pound more than Carl's 140 powered airplane.

Is the variation in the kit or in the equipment selection?

Colin

elan120

My Feedback: (1)

That is with the weight in the tail. I am not sure where are the additional weight came from, perhaps most of them came from the engine and exhaust used. If I remember, Jason's plane came out in this range as well, but since the plane performs well, I am not going to worry too much about the weight for now. Hopefully I can loose two more oz from the useless weight I added.

Kevin

cchariandy

Jason's was 10lb 2oz with the clear canopy and YS engine. So I think 10lb for the OS 160 powered version with standard canopy should have been acheivable.

Colin

CHV69

Kevin's engine set up is 4 oz heavier then an OS 1.40 setup.
Mine was set up originally with the Carbon canopy and no baffleing to cool the engine.

It came in weighing 9 1/2 lb.
I added 9 0z of lead to the fire wall Baffleing in the chin cowl for engine cooling.

Also I had to change to mich heavier silicion couplers for the header coupling.

I could use teflon and some some ozs.

After all was siad and done 10 lb 8 oz.

This jives with Kevin's figures using the OS 1.60 and perry pump.

It still flies like a dream at this weight.
I have fabricated a corbon Fiber pushrod sytem so I can get the servos out of the tail.
It will weigh less then the servos and put the weight in the right spot. Near or on the CG. Right now I am flying a Bar Bell Weight at the nose and weight in the tail.

Carl