FT Bloody Wonder - Scratch Build
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It depends on your skill level, I have run it with this: http://www.graysonhobby.com/catalog/disposablefoamiecombosport18aescthreadshaft-p-624.html
and it hummed along nice and docile, and I have used this:
http://www.altitudehobbies.com/brushless-motors/suppo-brushless-motors/brushless-motor-400-28-30-2200kv-suppo-2212-6
which has some get up and go.
I recently picked up this turnigy for $7 which runs about like the Suppo (when I pulled the Suppo for another use I put this on my non-swappable Fogey) with a little decrease in efficiency but no reduction in performance: http://www.hobbyking.com/hobbyking/store/__26487__Turnigy_DST_1200_Brushless_Bell_Motor_1200kv_USA_Warehouse_.html
and it hummed along nice and docile, and I have used this:
http://www.altitudehobbies.com/brushless-motors/suppo-brushless-motors/brushless-motor-400-28-30-2200kv-suppo-2212-6
which has some get up and go.
I recently picked up this turnigy for $7 which runs about like the Suppo (when I pulled the Suppo for another use I put this on my non-swappable Fogey) with a little decrease in efficiency but no reduction in performance: http://www.hobbyking.com/hobbyking/store/__26487__Turnigy_DST_1200_Brushless_Bell_Motor_1200kv_USA_Warehouse_.html
Eugene king
Senior Member
When I built mine I went to hobbypartz and got the Dynam A21 power combo for 18 dollars. It came with 3 9g servos, the A21 motor and a 18a speed control.
So fat it's been awesome. I then went to Headsuprc and bought some replacement motor shafts.
So fat it's been awesome. I then went to Headsuprc and bought some replacement motor shafts.
Well, this definitely proves that the Bloody Wonder can take a hit.
http://www.youtube.com/watch?v=jJ5Wm9chZMs
http://www.youtube.com/watch?v=jJ5Wm9chZMs
Just a heads up for the noobs out there like me, if you build this with a weak motor (ie. a Park300 1380kv, like I did) it won't be able to take off vertically. I am going to use this motor for the F-22 anyway, this one will get a 28-26 1200 which is already on the way.
Also, what do you guys do for the landings without a landing gear? Won't it hurt the prop? I made a fairly standard FT-swappable landing gear and put it on. (Prop is a 8x4E APC-Style prop)
The photos are before the landing gear "adjustments" on the fuse and the pod, I also got rid of the stick on the pushrod and used a ziptie. Colorful tape is narrow wing tape from Hobbyking.
In hindsight maybe covering it all with extreme packing tape was a waste. (Should've gone with lamination instead? Wing tape will tear the paper if used directly)
Maiden flight tomorrow.
Also, what do you guys do for the landings without a landing gear? Won't it hurt the prop? I made a fairly standard FT-swappable landing gear and put it on. (Prop is a 8x4E APC-Style prop)
The photos are before the landing gear "adjustments" on the fuse and the pod, I also got rid of the stick on the pushrod and used a ziptie. Colorful tape is narrow wing tape from Hobbyking.
In hindsight maybe covering it all with extreme packing tape was a waste. (Should've gone with lamination instead? Wing tape will tear the paper if used directly)
Maiden flight tomorrow.
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I ended up putting skids on mine. I simply glued panels on the side cheeks that extended down just far enough to keep the prop out of the dirt. They ended up making the front the same height as the rear stabilizers. I taped them and they held up great until I could catch it regularly, or in this video, put it in a tree. You can see them well at 1:15 and you can see how they save the prop when I do an accidental full throttle touch and go at 1:50.
Eugene king
Senior Member
What are the specs for the park 300?
My A21 is 23*6 kv is 1300, max amps is 12. It handles the bloody just fine.
My A21 is 23*6 kv is 1300, max amps is 12. It handles the bloody just fine.
If it's this turnigy: http://www.hobbyking.com/hobbyking/store/__14398__Turnigy_Park300_Brushless_Outrunner_1380kv.html that makes sense, recommended max weight is 340g. Mine weighs in without battery at 350g. That is with a slightly heavier motor though. Were you on 3s?
Yep, that motor, on a 3S. Just weighed the plane, distribution as follows:
460g - Body (Fuse, wings, power pod, electronics)
13g - Prop, prop saver
38g - Landing gear, rubber band
49g - Turnigy 460mah 3S nano lipo
Weighing it all on the scale gives me 561 grams. So yeah, it's a little too much for the tiny Park300 motor. Unfortunately the 28-26 won't be here until late april or so (Singpost) and I'm too cheap to go get a second one on a local hobby store, since they don't usually sell stuff cheap (that is of course if you can find what you need on the local store)
About the body, it's heavy because I'm not actually using Adams foam board but some other random foam board I could get my hands on, also excess use of packing tape probably adds some weight.
In the meantime I will build that F-22 I guess.
Eugene king
Senior Member
My bloody weighs 425g with 1800mah lipo.
Or the Delta, it's a lot of fun too, and that motor will carry it well enough.
Eugene king
Senior Member
Just got done flying bloody with a 850mah. My low voltage monitor didn't go off, my fingers got cold. Drew a cell down to 3.0v others were 3.7v.
Every time I fly I must add a little more left trim.
Every time I fly I must add a little more left trim.
Well... Maybe I will
In the meantime I just remembered that I am about to get a package of 4 x DT700s along with other goodies. Building David's tricopter, so one lucky motor out of those 4 is a spare. Maybe I could use that one for the BW
(here's a link for the specs)Eugene king
Senior Member
Your going to have a awfully big prop like a 10*6 or 11*4
May get in the way of landings
May get in the way of landings
Twitchity
Senior Member
After flying the Bloody Wonder around for a few days and enjoying it so much, I decided to build a new modified version to try out. I tried the FT3D but the motor I have just wasn't powerful enough to power the plane, plus it was a lot more complicated to construct than the Bloody Wonder.
For the new version I wanted the simplistic, easy build of the Bloody Wonder, the 3D capabilities of the FT3D. My solution was to combine the two. I used the PDF for the tail section for the FT3D and scaled it down to 75% in the print menu. I extended the fuse of the Bloody Wonder 7" and put a taper on it. Cut in the slots for the new tail and glued it all together.
It's been raining here all day so I haven't had a chance to test it out, but my hopes are it's going to fly just as good as the original Bloody Wonder. Before I take it out for its maiden flight, does anyone see anything that could prevent this plane from performing well? Here is a top and bottom shot of the plane.
For the new version I wanted the simplistic, easy build of the Bloody Wonder, the 3D capabilities of the FT3D. My solution was to combine the two. I used the PDF for the tail section for the FT3D and scaled it down to 75% in the print menu. I extended the fuse of the Bloody Wonder 7" and put a taper on it. Cut in the slots for the new tail and glued it all together.
It's been raining here all day so I haven't had a chance to test it out, but my hopes are it's going to fly just as good as the original Bloody Wonder. Before I take it out for its maiden flight, does anyone see anything that could prevent this plane from performing well? Here is a top and bottom shot of the plane.
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BrownEyedFool
Member
Put my Bloody up in the wind yesterday, twitchy as all hades. Think the CG could have been a little further forward, though space was slightly limited since I was mounting the 1300 mah internally for protection. Need a lot more expo and a lot less wind and better balance. Came in and basically did a flat spin into the ground, hitting flat, tore the elevator from right next to the vert stab about an inch and a half towards the nose, paper tore and separated from the foam.
Glued it back together with Foam Tac, clamped it and left it overnight, will see how it goes tonight when I get home.
Glued it back together with Foam Tac, clamped it and left it overnight, will see how it goes tonight when I get home.
Eugene king
Senior Member
My CG is forward 1/4 inch from the plans.
My expo on my FlySky radio is a linear curve and limits are around 15% on low rate and 25% on high rate.
My expo on my FlySky radio is a linear curve and limits are around 15% on low rate and 25% on high rate.
Foam Addict
Squirrel member
Twitchy, How did it fly?
That looks like a better 3d trainer, if a standard symmetrical Airfoil were used.
That looks like a better 3d trainer, if a standard symmetrical Airfoil were used.
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