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Bam-Bam - A new flying wing from Aloft.

Wayne

Administrator
Staff member
First a picture of the current prototypes:
bambam beach - 1.jpeg

Went down to Sunset yesterday and had a great time getting a few more hours of flight time and tuning the prototypes of the Bam Bam flying wings. They are a bit more refined from when I maidened them 1 month ago at our big Sunset event. A refined fin for less weight and even quicker recovery, refined CG and refined aileron throws all resulted in even better performance. But first a bit more about the design.

I started with good DNA. They are heavily influenced by the Boomerang flying wings from the '90s. I had one back in the day and loved it and have missed it ever since I donated it to a local kid. When they were produced, the Boomerang was the most winning wing in combat competitions, and to my knowledge no wing has been able to best them. My goal was to match the Bommerang's performance. What set the boomerang apart from the others was the basic flying qualities, it can fly in less wind, heck I used to thermal mine! I think this quality alone is what allowed the plane so much success in combat, the plane is eager to fly.

With the new Bam Bam there are some large changes in build methods. This results in a tougher and lighter model. These are built specifically for Sunset and have a single ribbon spar on the bottom and 5 mil DI laminating film wrapped around the 1.9 lb EPP cores. The cores have a few tricks and the two prototypes are a bit different. The red one is rather docile and maybe a bit quicker to recover, but the blue one is what our production will be, it is more efficient in low lift and a bit faster as a result of some tweaks to the design. (trade secret)

(I may take what I learned from the red one and offer it in an electric form where I think it makes more sense, I have somethings I would like to do to make a whisper quiet electric pusher setup.)

They fly when an Alula is struggling, they take a hit great, and they have very FAST recoveries. I love that I can typically out fly other flying wings in combat, most can only do one or two evasive maneuvers and then are struggling to find some lift again, but this one just keeps going, and while they struggle I can come in for a quick hit.

I have a couple of more "tricks" I would like to try, but already these are performing great.

We had a great time smashing and bashing these the last couple of outings. They taking a beating! Even had a pretty new pilot flying slope for the first time flying them yesterday. He inflicted the only damage when he nailed the rusty fence and ripped a bit of covering on the bottom of one wing. All good!

Getting closer to production on these. :)
 
First a picture of the current prototypes:
View attachment 15632
Went down to Sunset yesterday and had a great time getting a few more hours of flight time and tuning the prototypes of the Bam Bam flying wings. They are a bit more refined from when I maidened them 1 month ago at our big Sunset event. A refined fin for less weight and even quicker recovery, refined CG and refined aileron throws all resulted in even better performance. But first a bit more about the design.

I started with good DNA. They are heavily influenced by the Boomerang flying wings from the '90s. I had one back in the day and loved it and have missed it ever since I donated it to a local kid. When they were produced, the Boomerang was the most winning wing in combat competitions, and to my knowledge no wing has been able to best them. My goal was to match the Bommerang's performance. What set the boomerang apart from the others was the basic flying qualities, it can fly in less wind, heck I used to thermal mine! I think this quality alone is what allowed the plane so much success in combat, the plane is eager to fly.

With the new Bam Bam there are some large changes in build methods. This results in a tougher and lighter model. These are built specifically for Sunset and have a single ribbon spar on the bottom and 5 mil DI laminating film wrapped around the 1.9 lb EPP cores. The cores have a few tricks and the two prototypes are a bit different. The red one is rather docile and maybe a bit quicker to recover, but the blue one is what our production will be, it is more efficient in low lift and a bit faster as a result of some tweaks to the design. (trade secret)

(I may take what I learned from the red one and offer it in an electric form where I think it makes more sense, I have somethings I would like to do to make a whisper quiet electric pusher setup.)

They fly when an Alula is struggling, they take a hit great, and they have very FAST recoveries. I love that I can typically out fly other flying wings in combat, most can only do one or two evasive maneuvers and then are struggling to find some lift again, but this one just keeps going, and while they struggle I can come in for a quick hit.

I have a couple of more "tricks" I would like to try, but already these are performing great.

We had a great time smashing and bashing these the last couple of outings. They taking a beating! Even had a pretty new pilot flying slope for the first time flying them yesterday. He inflicted the only damage when he nailed the rusty fence and ripped a bit of covering on the bottom of one wing. All good!

Getting closer to production on these. :)
This wing will love Hawaii!
 
I really like the silhouette of the wing and tail. It immediately caught my eye when i saw it in the shop before sunset. If i had not been so busy flying my stuff at sunset i would have given it a fly.
 
I'm tempted to play with some sort of quick release fin design, but I'm also a huge fan of KISS methods for combat wings. Should someone smash the vertical, a new one could be hand cut from an old political sign and be back in business. (Exactly the source of our coroplast for these prototypes.)
 
I have a fin release im working on if you want to try it out. Havent tried it in real life yet. Should be lighter than the 2 screws option.
Same idea as the screws, a piece of wood on the bottom. This 3d print dropped in from the top and glued into the wood and foam around it. Just tape the fins in place.
1686072223371.png
1686071858350.png

 
Yeah, I saw that, basically a fin box?. I sort of liked the drop in fins you had on the big combat wings at Sunset.
 
WF>>> I have somethings I would like to do to make a whisper quiet electric pusher setup.<<<

I like this idea A LOT.
 
WF>>> I have somethings I would like to do to make a whisper quiet electric pusher setup.<<<

I like this idea A LOT.

I'm all ears. I have set these up with a one off mid drive in the past where the motor is just behind the CG and the prop runs on a rather long shaft. This keeps the CG nice and gets the prop out in clean air, thus very quiet. Jarron was wanting a tractor setup designed for it.. probably with the same goal of light and quiet. Was thinking of adding some hard points so a power system could be attached when needed via some screws.

Right now the goal is a simple but durable fin mount. Bouncing around different ideas, but think it will be a single screw in the rear. Electric would need to be a dual fin setup if we make it a pusher. (unless the motor shaft went through the vertical..Hmm..)
 
OK - bounced around with different ideas. got well on the way of drawing up a rather detailed servo tray, but in the end decided to Keep It Simple Stupid was the far better approach. We discussed motor options etc.. Not saying we will not do a motor option, but for now that is not the focus. Glider first.

So here is what I came up with.. It is a simple to install fin box. A single #6 sheet metal screw locks the 4mm coroplast vertical in place. A pilot can use the finger holes on the bottom, or put their fingers at the trailing edge. Both are protected via the fin box. (builder removes some foam for the bottom fin box)
Screenshot 2024-12-18 at 5.10.41 PM.png


Will test fit one very soon, if all is good will be on the site VERY soon.
 
I have set these up with a one off mid drive in the past where the motor is just behind the CG and the prop runs on a rather long shaft. This keeps the CG nice and gets the prop out in clean air, thus very quiet.
My only argument against the long motor shaft is that it won't stay true very long (if used in combat at all). I made something really similar to the below several years ago and it was super quiet.

IMG_5350.jpg


The tractor setup may be the easiest option.
 
OK - bounced around with different ideas. got well on the way of drawing up a rather detailed servo tray, but in the end decided to Keep It Simple Stupid was the far better approach. We discussed motor options etc.. Not saying we will not do a motor option, but for now that is not the focus. Glider first.

So here is what I came up with.. It is a simple to install fin box. A single #6 sheet metal screw locks the 4mm coroplast vertical in place. A pilot can use the finger holes on the bottom, or put their fingers at the trailing edge. Both are protected via the fin box. (builder removes some foam for the bottom fin box)
View attachment 21434

Will test fit one very soon, if all is good will be on the site VERY soon.
Is that a reflex section, like an E180 or 182, Wayne, or a standard semi-symmetrical with an added-on TE?

Just curious.:)

Doc.
 
That airfoil is so top secret that I don't even know what it is! Yes, it has reflex.

This is closely related to the Boomerang from the 80's. They have always been a bit better than anything else out there in the combat arena IMHO. They make for a really enjoyable model to fly. They float well, they are aggressive, they are tame. Can't ask for much more.

The one thing I always hate with combat wings is the verticals. The verticals always get in the way when traveling with a bunch of models, and take a beating when abused. I like center fins a fair amount and the one thing I have wanted for this model is a quick and easy way to remove/replace the vertical. Otherwise, it is pretty simple combat wing with a minor tweak to the wing layout that allows it to hang on in a deep stall that combat wings tend to nudge against a lot.
 
That airfoil is so top secret that I don't even know what it is! Yes, it has reflex.

This is closely related to the Boomerang from the 80's. They have always been a bit better than anything else out there in the combat arena IMHO. They make for a really enjoyable model to fly. They float well, they are aggressive, they are tame. Can't ask for much more.

The one thing I always hate with combat wings is the verticals. The verticals always get in the way when traveling with a bunch of models, and take a beating when abused. I like center fins a fair amount and the one thing I have wanted for this model is a quick and easy way to remove/replace the vertical. Otherwise, it is pretty simple combat wing with a minor tweak to the wing layout that allows it to hang on in a deep stall that combat wings tend to nudge against a lot.
Woo...top secret aerofoil. I have no doubt thousands of would-be wingers will try to track it down.

At least your fin is in the middle, Wayne, so it can be designed to unplug. Some ill-advised people put them at the ends of the wings, which not only makes them hard to unplug for transport but also doesn't work.

The only wing-end fin foam model I flew had a good planform, and everything was going for it except the wing-end fins. Actually, I think it would have been pretty good for combat as it has a mind of its own from time to time and did sudden manoeuvres that for sure were not due to any input from me!:eek:

Nice project, simple and good.

Doc.
 
OK - bounced around with different ideas. got well on the way of drawing up a rather detailed servo tray, but in the end decided to Keep It Simple Stupid was the far better approach. We discussed motor options etc.. Not saying we will not do a motor option, but for now that is not the focus. Glider first.

So here is what I came up with.. It is a simple to install fin box. A single #6 sheet metal screw locks the 4mm coroplast vertical in place. A pilot can use the finger holes on the bottom, or put their fingers at the trailing edge. Both are protected via the fin box. (builder removes some foam for the bottom fin box)
View attachment 21434

Will test fit one very soon, if all is good will be on the site VERY soon.
The fin boxes Nate uses on the StarFire work great. They slip in easy and hold really well. He even printed them for the 24” version I had last year and they also work well.
 
Yes, I have always liked his fin boxes! I think this is pretty similar?
bam tail - 1.jpeg
bam tail - 2.jpeg
The screw in the rear is not really needed, the 4mm coroplast is a snug fit. Works really well. Need to open up the finger holes a little, and probably pull some weight from the 3D print.
 
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