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Old Mar 31, 2010, 07:28 AM
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Netherlands
Joined May 2007
56 Posts
Build Log
The Depdart, lot of pics & Free Plans !

Hi,

why keep your indoor-stuff in the closet till autumn, do something with it !!! (or leave it they'll eat dust ... )

For this reason i was in search of a nice flyer, wich would be capable of handling some wind. It had to be simple and not to big, so that it can be always in your car.

Finally, i found a nice plan: The Depdart.
It's an design of a Dutchman called Willem Bravenboer.

I was suprised by the plan, just because it's so simple




The Plan's:
1. The Depdart plans (A0)
2. The Depdart plans (A3) tiled
3. The Depdart plans (A4) tiled


Ok, what do we need for this flyer:

- 1 x 24 grams brushless motor HXT 1700 Kv (a.k.a. the Blue Wonder)
- 1 x prop 6x4
- 1 propsaver
- 1 x 12A ESC
- 2 x 5 grams servo (i used HXT-500)
- music wire to bend linkages
- control horns
- some tape
- 6 mm foam like Depron
- foamsafe glue
- some rulers, a sharp knife, etc.


Most of your building time will be waisted by assembling the pages of the plans and taping them togehter, i hate this part of the job




If you did it right, it should look like this ... BTW: did i mention that is was a simple plan




After cutting the parts, you get this ... nice and simple is'n't it




Before i ad the glue i always pre-fit the parts. If you did a nice job on the cutting ... it will fit without any corrections. It'll look like this:




I had some scrap pieces of cover material, i gave it a try ... when you use your iron on a very low temperature, this works great. A test object ...




Here's the wing, i marked the ailerons for cutting them out of the wing. I beveled a 45 degree side on it and hinged them with oridinairy packing tape. Later on i re-inforced the wing with a 4 mm carbon tube.




Here's a picture of my iron skills. Just use a low temp and go quickly over the cover to attach it to the foam.




A few minutes later ...




A quick overview:




The 4 mm carbon tube is glued in, i always let it dry with some weight on it:




Here's a picture of the other side of the wing, with the carbon tube visible. I also added a couple of stripes, cause i want to know if i'm flying upside down or not ...




The rest of the progress wil be posted soon ...

Grtz,
Menno
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Last edited by RCEFlyer; Apr 11, 2010 at 09:11 AM. Reason: changed Title in "Build Log"
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Old Mar 31, 2010, 08:07 AM
CMelton
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USA, NC, Burlington
Joined Jul 2009
320 Posts
cool looking what do you think the final weight will be
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Old Mar 31, 2010, 09:19 AM
Fremont, CA
United States, CA, Fremont
Joined Jan 2009
1,667 Posts
A simple and efficient build! Nice pics too.
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Old Mar 31, 2010, 09:24 AM
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Netherlands
Joined May 2007
56 Posts
Hi,

total weight ? I'll let you know

EDIT AUW total weight is 166 grams

Estimate:
- motor 24 grams
- Lipo 70 grams
- ESC 15 grams
- Receiver 5 grams
- servo's 12 grams
- wire, horns, etc 15 grams
- airframe 50 grams ?
- cover 5 grams
Estimated Total: 196 grams


Here's my progress:

This is the motormount i will use, cause i didn't want the motor to get too far in front, i use this mount reversed. Therefore i had to remove a flange out of the mount. I did this with a small file.




Now this is the way i want ot mount my motor:




In the fuselage i had to cut out the room for the servo's:




This has to be done in the wing also, because they are glued together later on:




Here you can see the fuselage and the wing glued together, ik used UHU POR. I don't know if you quys know that stuff ? This way you get a real stiff servo-mount.




This is the motor i used, i already soldered 2 mm connectors. In this picture the prop saver is also mounted.




If you did a goog job on the cutting, the parts will fit together without any adjustments. I straightened out the underside of the fuselage and glued it in, the tabs will tell you were exactly ...




Now the upper part of the fuselage is glued in, i clamped the tail to be sure that this will be straight.




To mount the motormount i glued (epoxy) a couple of 1 mm ply strips to the front side of the fuselage. After that i drilled some holes for the screws. To be sure i taped the mount to the fuselage with glasfibre tape.




This is what it looks like when the motor is on the mount.




The controlhorns are glued into the wing and the servo's are already glued in place. Before glueing the servo's i taped them.




To connect the servo's i made a linkage by using 1 mm music wire. I made a z-bend at one side. The other side i mounted with quick links.




At the right-side of the fuselage i mounted the electronics, using Velcro. Be sure you test if you can achieve a good CG before placing all this stuff. As you can see, i'm not into 2.4 Ghz systems yet




At last i mounted the 6 x 4 prop and placed the Lipo at the distance for testing. De Depdart is on the CG-machine (Great Planes) now, so i can adjust the place for the Lipo a bit. Attention ! The Lipo must not be mounted on the upperside of the fuselage !!! This is just done for testing @ weighing out the CG !!!




Now the Depdart is ready Here are two pics for an overview:







I will put my Depdart on the scale to post the total weight. I'll be back soon EDIT: AUW (incl. Lipo) is 166 grams

I hope you enjoy this Build Log Don't hesitate to ask ... if you are not sure or just want to check, post your comments

Happy flying from the Netherlands !

Grtz,
Menno
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Old Apr 02, 2010, 01:12 PM
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Netherlands
Joined May 2007
56 Posts
Hi,

i took the Depdart to teh field and it had it's maiden flight.



Cool Nice flyer.

Although it was a bit windy, the Depdart flew very good rolls, loopings, inverted, 1 meter turns, it does it all ...

In fact, it's so nice that i decided to build another one (so take yout popcorn , sit back and relax) I like this flyer so much that i always want to have
a Depdart in the car, everywhere i go ...

Here we go again, cutting some parts:




The second one hat to be a quit different color scheme:




Now take your sunglasses ... What about this color ... "Oracover Fluor Yellow":




This thing would even be visible at night, i guess ...




The upper part of the fuselage:




And a complete Depdart is born ...




Now my flying buddy was suprised by this flyer and liked it also very much. As a suprise, i will build him one as well. This "build" will show up next day's.


Grtz,
Menno
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Old Apr 02, 2010, 03:51 PM
Fremont, CA
United States, CA, Fremont
Joined Jan 2009
1,667 Posts
Looks like a fun plane to build.
What is the wing span? (I'm not using the tiled PDF).
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Old Apr 02, 2010, 04:14 PM
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United States, IA, Grinnell
Joined Mar 2005
560 Posts
RCEflyer-

That's cool! I'm building one. Thanks for the plans!!

S
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Old Apr 02, 2010, 04:20 PM
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Netherlands
Joined May 2007
56 Posts
Hi,

@Djacob7: the wing span is 71 cm, that will be about a bit more than 28 inch. Can you process the plans in pdf ? otherwise i can transform them to another file format ... let me know !

@swedercgroups: you're welcome. Please feel free to show your pics in this thread

Grtz,
Menno
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Old Apr 05, 2010, 08:50 AM
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Netherlands
Joined May 2007
56 Posts
Hi,

for a good visibility i had to "design" another scheme for the bottom wing.
So i took the cover and my knife again ...




With the iron on a very low temperature the cover sticks very well to the Depron.




I just wanted to ad another color ...



And again a Depdart is ready for the electronics

Grtz,
Menno
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Old Apr 05, 2010, 06:44 PM
Crash Master
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Indianapolis, IN
Joined Sep 2001
16,632 Posts
Looks great!

Reminds me a little of the Twiglet, only profile and tractor...

Had a blast with that one years back!
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Old Apr 11, 2010, 09:24 AM
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Netherlands
Joined May 2007
56 Posts
Hi,

@Gene: thanks Your plane has a real fuselage But the looks are common ...

So, in our flying club there are more and more people interested. Maybe, there will be more people who like the fun of these gimmick's

I had to finish my second Depdart, so here are some pics:

I glued the middle part of the fuselage to the wing:




In the meantime ... cause i also promised my flying buddy to build him a Depdart:

Now: what about these colors ? That will be visible, don't you think ?







I had to figure out a different color-scheme, for the bottom of the wing, so here it is:




Finished:




A completed Depdart for my buddy




A whole family:




Waiting for the motors / esc's and other stuff, i will build another depdart. Just because i have a little Depron left ... just enough for one Depdart


Grtz,
Menno
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Old Apr 11, 2010, 10:01 AM
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illinois
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Need video!
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Old Apr 11, 2010, 12:59 PM
flyin' fool
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Vancouver Island, Canada
Joined Jul 2003
7,291 Posts
Nice simple design, great find and thanks for sharing. I'll have to add his one to the list, only in EPP. That way I only have to build ONE.
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Old Apr 11, 2010, 01:27 PM
flyin' fool
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Vancouver Island, Canada
Joined Jul 2003
7,291 Posts
By the way, mounting your RX antenna that way is not correct. You should never wind it back on itself, that detunes the RX and shortens the range. Install it so the very end is trailing behind, since the very end or tip of the wire is where the signal is received.

If you want a shorter length, then wrap it around a drinking straw like a coil, never over lapping the wire and leave about 35 cm at the end. It still will shorten the range, but not a worry for a park flyer. Or, google 'Tony's Fy Wire For Helicopter'.
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Old Apr 12, 2010, 07:49 AM
London Ontario Canada
artlane's Avatar
London Ontario Canada
Joined Apr 2004
1,045 Posts
Hey Frank, betcha I gets mine built and flown before you do...... eh????
Nice one RCEFlyer, now where is my EPP?????
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