Oh no! I hope you can get it trimmed out again. Don't forget to check lateral balance. Your wing repairs might have left one side heavier than the other...

It might be a good time to investigate finding a source of 3mm depron so you can make your own replacement parts. Would be cheaper than getting a whole new plane.

Clark

Yeah i wonder how much time that would take to get everything perfect[&o]
I dont really know what i want to do????

tylerman....Great idea for mounting the battery. I did just as you showed.

I've pretty much finished the plane. Just need to do some final balancing and then wait for some good weather, for her maiden flight.

c-ya

RC4LIFE-
Good, glad one of my ideas work.
My dad acually came up with that idea for mounting the batt.---

I got my Hell raiser flying good again- i sat down and looked at it and started messing around with the foam until i it got straight again.
I am kinda relieved that i didnt ask for a new plane then i woulda felt guilty

I think that the 2212 is too big for this plane. It will require a larger pack. It definitely flies better to me at 10 oz. with the 340 and 480 packs. And power is awesome!, with a much lower wing loading. It also feels better with the 2208/34 on the 9x3.8 allowing it to come down better while in a hover. But flies a hair faster than I would like with the 9 and requires better throttle management.

Derek

Is anyone putting any other kind of of motor besides AXI in their Hell Raisers?

There is one at our field with a geared setup but it was a lot of work and doesn't look as good. The AXIs really work great and this plane was designed for the 2208. I actually really prefer the firewall mount and am going to try similar setup on our home made planes. I seen the nesail.com Bead 3D uses exacly what I was thinking.

But these self wind CD ROM motors would probably be really great for the money but I can't seem to find any, and not sure they can mount as clean as the AXI.

Anyone know of a good supplier?

Derek

the new hacker should be good

I agree, I am going to try the larger one on the Troybuiltmodels Monte.

I really like my AXI,
What i dont like the idea of is gearboxes.
I had a trainer with a gearbox in it and it worked fine but i dont really like it.

Can somebody educate me on what the purpose of a gearbox is?
Why would you want to slow the prop down instead of letting it go faster- i dont see the logic in the reduction gears.

exuse me for not knowing about all of this we fly glow engines a whole lot more that electrics

I am using the new HiMaxx 2208 package from NEsail.



[link=http://www.nesail.com/detail.php?productID=3154]http://www.nesail.com/detail.php?productID=3154[/link]

I am using a 3s 900mah TP pack and it seems to perform really well.

I was never able to hover anything before but I managed it on the first try with the Hellraiser.

you use GB the same way car engines has GB. Why have the 1st gear when the 5th gear will turn the wheel faster? It's all about the torque. In cars, that means acceleration, but in airplanes, that means larger props.

HTH.
Josh

Close, but it actually turns the prop slower. The outrunners run slow and strong and do not need the gearbox. Where inrunners or standard electric motors turn much higher rpm per volt (KV) at lesser torque.
The AXI for instance is a 1080kv so 1080 rpm per volt. Where say the Himax 2015-4200 is a 4200kv so gearing it down 4:1 would give roughly the same rpm at the prop. There are, of course, other factors but that's a start.

Derek

So its all about prop size?
Does prop pitch have anything to do with it?

I think that i will stick to the outrunners. I belive that gearboxes are just one more thing that can go wrong[:@]
Ive seen some planetary gearboxes that are all sealed up and tidy and just get attached to the motor shaft-those look like they're okay
but those ones that hang out in the open are in my opinion trouble that is waiting to happen.

Just in case you guys are wondering, my landing strip is a dirt road out in front of my house

Use a AXI 2212/34. Run a 11x4.7 APC SF. Tons of power and keeps the speed down. This is the perfect motor for this plane. Draws about 9 amps static. I tried a 2208/34 and I had to use a 9x3.8 SF to keep the amps down on 3 cells and the plane flew to fast. In my opinion there was not enough prop wash over the surfaces.

I use the AXI 2208/34 with my Hell Raiser and i belive that it works just fine[>:]

I ran my hellraiser it to the top of a tree today, Tried to fly in the culdesac and had it going good. Great harriers, then went into hover practice, but CG was too far forward. Fell out, and the recovery took me into the top of a damn spindly tree. It tumbled down thru the tree, then lower branches, so I could reach it. Broke both bottom wings at the root next to the fuse and one aileron control horn. More tape and epoxy... this thing is gonna weigh 20 oz soon...

So, if I don't get another Hellraiser, what is the best substitute without buying any new gear? Quasar, Tensor, Shocky?

Dad, you are really stupid sometimes-
I think that we both need a tensor[>:]
My plane is starting to get pretty heavy with all this tape that just seems to majically-(spell check) appear[]
Ive got like 2 busted wing tips and a bent aileron[&o]

Besides i think that the tensor flies in alot smaller of a space(for example: cauldasac)

Go for something sturdy. I don't have either but I bet you'll tear up a Tensor or a Shocky. From what I've read the key to both of these planes is their super light weight. So I think they will suffer from too many layers of tape repairs.

Seriously, the HR is still a good plane and you've both shown it can take a beating and still be repairable. That should count for something.

Otherwise, I think you need another plane that has reinforced leading edges. The planes at 3dfoamy.com sport a "PRO" wing which laminates 3 layers of depron at the leading edge. Makes for a strong wing and gives it a unique airfoil. Like all profile planes, they are ugly. You'll have to see what their power requirements are.

FWIW I've flown my HR *through* trees with only minor dents, I've pancaked it after pulling out of a loop too late, and I've tumbled it off a roof. All I've ever had to do was re-anchor one of the flying wires once. I credit this to my "armor"- I reinforced every glue joint, including the wing root joints, with strips of packing tape and I covered every exposed foam edge with 3/4" tape. So I have super strong non-tearing joints and non-tearing edges to the flat plate surfaces. Zero hangar rash as well. The plane easily absorbed the extra 1/10 ounce of weight.

I also mounted my battery pack to the plywood frame because I thought mounting it on the foam would tear the foam in a crash.

Happy Flying
Clark

Clark,

You are probably right, the Hellraiser is a great plane, and Tyler (my son) and I have beaten them pretty hard as we have learned to 3D and handle a little light flier like this. We both got one for Christams. This is our first time with small electrics, but it sure is fun. Mine took a really bad crash, and it is already a tape-monster. The new damage was easily repaired, but it is sure looking like a piece . Tyler is on his second one, but he flies in the open nearly every day if the wind isn't too bad.

The HR is a durable plane... but I was just wondering if there was a better alternative. Maybe not...

Dont get me wrong i love my Hell Raiser to death but the build for it is so tedious.

Tensor is still a great alternative

Ha! I guess you've never built a balsa kit. 15 light-pace hours from pkg delivery to first flight seems like nothing to me.

But now I am curious too. Anyone know how much thrust a 2208/34 puts out with the 10x3.8 prop at 11v? flyingmodels.org doesn't have the data for this motor.

For a 3d plane you'd want a T/W ratio of at least 2:1, for aerobatics 1-1.5:1 would do, for scale general aviation you could go down to 0.8:1.

Clark

I meant for a foamy it is tedious.
I am one of those people that like to fly just a little bit more than build, even though i still enjoy building.
I have built 2 sratch balsa airplanes that dont look too bad if i say so myself.

By the way The 2208/34 puts out about 17 ounces of thrust i belive.

AXI 2208/34, Appogee 830 3S, use a 10 X 3.8 APC slow flight will pull 9 amps and generate 20 oz of static thrust.

How do you find that out. Cuz my hell raiser with the 2208 doesnt act like it pulls 20 ounces of thrust.