New Version of Jackaroo UAV Coming for FPV - Page 6 - RC Groups
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Apr 26, 2011, 11:32 AM
Inherent Tinkerer
Thanks, Guys.

We're working on a removable wing right now. More details to come.

Last edited by jtprouty; Apr 27, 2011 at 01:26 PM.
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Apr 28, 2011, 01:30 PM
Inherent Tinkerer
We've set the prices based on having a clear dome or a fiberglass dome (Glass) as follows:

Clear Glass
Kit: $165 $145
ARC:$220 $205
ARF:$260 $245
UAV:$300 N/A

Please note that the UAV version comes with both domes. We're also working on a pan/tilt system built specifically for the Foamaroo and Jackaroo.

Apr 28, 2011, 07:19 PM
USA: LakeGeorge, New York
is it still a one piece wing where once glued to the fuselage, it wont break down for transport?....

how much building is required with the ARF version?
Last edited by rclab1; May 01, 2011 at 07:02 PM.
Apr 28, 2011, 10:39 PM
Registered User
Originally Posted by leadfeather
I had a turn at the sticks on the Foamaroo. I was very pleased with the flying qualities. No bad habits and surprisingly responsive to control inputs. I was especially pleased with the roll control. I was expecting such a big flying wing to be sluggish in roll; but the Foamaroo will roll very quickly; and predictably; if you ask it to.

It also handled the wind very well and was scarcely effected by the gusts. As I was flying, I was thinking to myself that the Foamaroo would be a very fun sport flyer.

Nice work Jimmy!
This is great to hear! We spent a lot of time on design.

Thank you for the great report!

Chris McNair
Last edited by airmcn_3; Apr 29, 2011 at 12:53 AM.
Apr 29, 2011, 03:53 AM
Just clumsy. Oh, forgetful too
MikeTheCrash's Avatar
Can you explain or show some pictures of how the battery, OSD etc etc fits in? I presume it's hollow. Is there a lid like the composite version or do you go in through the dome? If we cut our own lid do we compromise its strength?


Last edited by MikeTheCrash; Apr 29, 2011 at 04:55 AM.
Apr 29, 2011, 09:01 AM
Registered User
Originally Posted by MikeTheCrash
Can you explain or show some pictures of how the battery, OSD etc etc fits in? I presume it's hollow. Is there a lid like the composite version or do you go in through the dome? If we cut our own lid do we compromise its strength?



All good questions. I will let Jimmy respond to the majority. There has to be a hatch as getting to the rear of a 22" tube will not be easy without one. It is somewhat hollow. The wing goes through the fuselage so that space is taken up. Plenty of space!

Apr 29, 2011, 10:13 AM
Inherent Tinkerer
The front and rear of the fuselage are removable as well as the motor mount to give access to the inside of the fuselage. I didn't make a hatch on the prototype but I'm in the process of making a second one that will have a hatch over the wing. The problem that I've run into is cutting the hatch square to the wing due to the unique construction process I've come up with for the hybrid fuselage. I don't think it will compromise the strength of the fuselage and should have more details on that this weekend.

Concerning the battery, it's attached to the top of the wing with Velcro and inserted through the front of the fuselage with the nose cone removed. I just use clear tape to hold the nose cone and tail cone in place to make it simple to remove and install.

I also hope to have some more progress on a removable wing and will post details as they come available.

May 01, 2011, 01:24 AM
Inherent Tinkerer
Here's a picture of the inside of the Foamaroo with a 4400 mAH battery installed. There is over 8" of room in front of the wing, not including the nose cone and dome. Putting the video TX and data modem in the wing would leave the fuse open and help eliminate any chance of interference.

May 01, 2011, 07:03 PM
USA: LakeGeorge, New York
Let us know when the removable wing comes into play,....
I will buy once its available :-)
May 01, 2011, 09:48 PM
Winging it >
leadfeather's Avatar
I got to watch the Foamaroo fly in nicer conditions today; smooth as silk.

I timed a flight for Jimmy, he was flying either a 4000 or 4400mAh 3s battery. After launch I had to leave for a while and go to the local home improvement store. I got back in plenty of time to watch the completion of the flight. Total air time was 45 minutes!!

I also watched Jimmy launch the Foamaroo with a 5000 mAh 3s battery in virtually calm conditions; he made it look pretty easy. This is one nice flying wing!
May 02, 2011, 12:04 AM
Inherent Tinkerer
Thanks, Dan.

My first flight was done with a 4400 mAH battery in calm to light winds and the launch was very predictable and not an issue. It doesn't take much effort to get the plane in the air and by gripping it in front of the wing I can get my hand well out of the way of the prop during the launch. I did a duration test with the old, tired battery and got 45 minutes before I landed. With some testing I'm sure I can find the optimal prop for this motor and stretch the flight even longer. I'm sure I could have gotten over an hour if I had a newer battery.

On subsequent flights I used a 5000 mAH battery with no change in the launch or flight. I had a great time yanking and banking the Foamaroo and REALLY like how it flies! I'm looking forward to a day when we have some thermals to see if I can thermal it like my Radian.

The videos below show some video shot from the Foamaroo, some launches and landings, and the fun flying I was doing around the power pole.

I've also included a picture of the plane with some custom graphics I put on last night.

Video Shot from Fomaroo UAV/FPV (4 min 39 sec)

Yanking and Banking a Foamaroo UAV/FPV (4 min 4 sec)

Foamaroo Flight Test (2 min 51 sec)

May 02, 2011, 05:00 AM
fmkit's Avatar
Originally Posted by rclab1
what were the wind gusts' on that video?
every 2nd post here about winglets
I don't use them at all, thus better performance in wind gusts
the video recorded 2 days ago:
Flying wing at Hoff Kiriat Haim,Haifa Bay. Strong wind. (3 min 34 sec)
May 02, 2011, 06:52 AM
Registered User
Whats the diameter of that tube guys ?

May 02, 2011, 11:03 AM
Inherent Tinkerer
The inner tube is 3.75" in diameter.

May 02, 2011, 11:08 AM
Inherent Tinkerer
I haven't seen any problems associated with the winglets in high winds. I know full sized aircraft (B2 etc) had a problem with the plane oscillating in yaw causing problems with target acquisition. It could also cause problems with shooting video if the oscillations are severe enough.

Our winglets were optimized with computational fluid dynamics and work extremely well. As proven in full scale planes, the winglets can also help to reduce drag.

Another benefit of the winglets is that they greatly increase visibility when the plane is out a ways. When flying the plane yesterday the white winglets really showed up well in the sun and helped with orientation.


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