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Oct 24, 2011, 07:57 PM
Aircraft Designer Guy
AJWoods's Avatar
Build Log

Bob Starr Bumble Bee ---video added---


The Bumble Bee has always been one of my favorite planes, so with the indoor season coming up I started drawing.

To get enough wing, I selected a 9in span (which works out to around 1/8 scale!) Sized for an AR6400 setup. Construction is a combination and 6 and 3mm depron, laminated and sanded to form the cowl and turtle deck. The cowl turned out to be much easier than I had feared, taking about 30 minutes to finish. The canopy was formed by shrinking some 3in clear battery shrink wrap around a wood form.

Once I get this guy in the air I'll post pics of a second build, with detailing/paint.

-Adam
Last edited by AJWoods; Oct 29, 2011 at 02:45 PM.
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Oct 24, 2011, 10:32 PM
Mack
Peter Mack's Avatar
Maybe fill it with helium as per the Airbus in:
modell-hobby-spiel 2011 - Airbus A310 in Action (3 min 7 sec)
???
Oct 25, 2011, 03:50 PM
Aircraft Designer Guy
AJWoods's Avatar
Yeah, there is some substantial volume in the fuselage. I was very tempted to try and build one full scale out of depron. It would be smaller than the indoor Cri Cri that was at the same german show.

-A
Latest blog entry: Giant Scale Lego Plane
Oct 26, 2011, 07:48 PM
I NEED a micro seaplane lrf!!!
fabersum's Avatar
Wow! Your Bumble Bee looks so cool!!!! :-) Ahaha, thread subscribed!

And your skeletonized model is very neat too..

I am waiting to see the developments!

Andrea
Oct 26, 2011, 09:46 PM
Resident giant scale guru
my c210's Avatar
going. to. need. so. much. expo.

subbed.
Oct 26, 2011, 10:19 PM
Aircraft Designer Guy
AJWoods's Avatar
Surprisingly, things this squat tend to be rather tame in roll (sometimes they have a slow but stable oscillation ). The killer is that any time you touch the elevator all your speed goes away. Gentle rudder turns is all I have planned for this little guy.

Got all the controls set up today, hopefully it will stop raining at some point tomorrow.

-A
Latest blog entry: Giant Scale Lego Plane
Oct 27, 2011, 06:50 PM
Shade Tree Aviation #2
M.Putnam's Avatar
Bumble Bees fly just fine!

Matt
Oct 28, 2011, 09:42 PM
Aircraft Designer Guy
AJWoods's Avatar
It flies! It flies! Pretty tame too. Super stable at high alpha, so it was easy to get it trimmed just right over the soft grass. I could pull full up and it would just mush right in.

I installed the 4-site motor and gearbox first, but with the giant cowl, I was only getting about 20g of thrust, on a 50g airplane. Switched over to the park 180 and 2s, bringing the weight up to 60g, but getting close to 1:1 thrust.

Time for some video and paint. If only there weren't a foot of snow in the forecast

-adam
Latest blog entry: Giant Scale Lego Plane
Oct 29, 2011, 11:54 AM
Registered User
It is just too cool. Do you have a plan set for it? I would love to build one.(someday when I have the time).
Oct 29, 2011, 02:41 PM
Aircraft Designer Guy
AJWoods's Avatar
Quote:
Originally Posted by MellowFlyer View Post
It is just too cool. Do you have a plan set for it? I would love to build one.(someday when I have the time).
I've got a backlog of planes I need to post plans for, but I'll get to it. Might use this set as an example of how I go about getting from a 3 view to cut files. I've been considering kitting some of my designs, but it's hard to make the financial case for these little foamies, but in the past I've just cut a few kits for people if they covered the cost of the foam and shipping.

Got a short video in this morning, before the nasty weather set in. Bit windier than I would have liked, but it's proof the little guy flies.

-Adam

1/8 scale bumblebee (0 min 34 sec)
Latest blog entry: Giant Scale Lego Plane
Oct 29, 2011, 04:31 PM
Even that isn't fast enough
Nice job Adam!
Oct 29, 2011, 04:59 PM
Aircraft Designer Guy
AJWoods's Avatar
Quote:
Originally Posted by why_fly_high View Post
Nice job Adam!
Thanks, brought back some memories of terrible little 2ft span biplanes
Latest blog entry: Giant Scale Lego Plane
Oct 29, 2011, 05:15 PM
micro_builder's Avatar
I was surprised at its speed and stability...you would think with such short stubby wings it would be a handfull, quick too. Certainly seems like an indoor candidate, nice work on a cool design

Nick
Oct 30, 2011, 05:14 PM
Aircraft Designer Guy
AJWoods's Avatar
Painted it up this afternoon. Should have used some foresight and painted it before assembly. Masking the stripes with the wings on was a real pain.

Now I just need to make a sticker set, and update my drawings based on the final equipment locations

-A
Latest blog entry: Giant Scale Lego Plane
Oct 30, 2011, 06:41 PM
Mack
Peter Mack's Avatar
Seeing is believing Adam. Well done, and not a molecule of helium needed!
Peter


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