Flat4
Senior Member
This is going to be my sort of build log of a quad motor bloody wonder, inspired by Flying201's Twin Bloody Wonder. As usual I never think to take pictures as I go until I'm hours into it, so bear with me, this won't be the most visually impressive build log. Thanks again Flying201, for inspiring me to get to work on this, your twin bloody is awesome, hopefully this can follow in it's footsteps.
A few nights ago I stumbled across Flying201's build log of his Twin Bloody Wonder. Being that I currently needed a new fpv air frame, and seeing how sweet his twin was, I thought about how I could go about making one with what I had laying around. My mind immediately went to my plethora of spare mini quad motors and esc's, they needed a home, but how to incorporate them? I first thought since Flying201 up scaled his a bit to better accommodate the two standard sized BW motors, I'd just make a normal sized one with two mini quad motors. I entertained that idea until I cut out the wing and realized how tiny two 5" props would be on it, so quad bloody it is!
I started out by simply cutting out a standard wing for the BW, as well as the wing spar. I then added a 1x6x750mm carbon strip in between the foam spar as I folded it over for added rigidity. Next I marked out my spacing for the motors, and put some thought into the wiring and esc placement. I decided to cut holes in the bottom of the wing for the esc's to sit flush with, and allow air to pass over them. Now knowing what I needed for wire length I began my harness for everything. A few hours, and quite a bit of head scratching later I had everything wired up and the motors spinning in the proper directions.
Next I cut out roughly one inch squares of some 1/8" hobby ply I had around to use for motor mounts. After drilling some holes for the motor shaft, and screws to go I had all my motors mounted, ready for installation. I carefully laid everything out in its spot and used some hot glue to tack the wires down in place to allow me to fold the wing over. Here is where I finally thought, hey you should take some pictures. Oh as you can also see in the pic below, I added some foam behind where the motors will mount to give a bit more surface to glue them to.
Next I folded the wing over, and glued it all up, again without taking any photos because let's be honest who really comes into build threads to see pretty pictures of well crafted airplanes? Afterwards I went ahead and glued on the motors, and threw some props on to make me feel some sense of progression. Surprisingly all the motors spin, not only that, they spin the right directions! Oh and what's this, I remembered I had a camera again?
Both of these shots are of the underside of the wing.
Well, that's it for the moment. I figured getting all that done would be the longest part of the process, and I was right. I could have made 2 standard BW's by now, but I think this might be worth it. Stay tuned for more, should have a good chunk done tomorrow night as I'd really like to maiden it this weekend.
Anyone know of an average AUW for a standard Bloddy Wonder? I never weighed any of mine and I'm curious as to how this will stack up. Currently I'm up to 290 grams as you see it in the last picture.
Update 1
So earlier today I finished off cutting out and taping up all the remaining piece's before work. Well having been home for a few hours now, I pretty much finished everything else up. I've yet to attach the vert stabs so they don't get in the way of me running the pushrods. I just slid them in the slots for the photos below to complete the look. My flying buddy is going to bring me some linkage stoppers tomorrow morning so i can finish up the control surfaces, and off to maiden. Differential thrust has also been setup, and seems likes it's still going to have insane yaw authority even without a rudder.
The one thing that's really turning me off is the front, that square tube is really bothering me. Problem being I cut the fuselage to a pretty tight fit to my fpv board cam, not really giving me any room for modification. If anyone has any simple ideas for adding some shape to it, I'm open to suggestions. I am going to probably take about an inch off the length of the nose. I made it long intentionally because I was unsure of how the CG was going to end up, but it's not a problem at all. I think that's about it for now, enjoy the pics.
Fun Fact: These motors once flew my 250mm sized mini quad that weighed 610 grams, so this should be fun.
Update 2
So I went out early today and had an extremely successful maiden, really thrilled with the way this flies. I ran home with the intentions of uploading the video's, but my flying buddy convinced me to slap my fpv gear on it, and go fly with him and his blackout mini quad. So I sadly yanked my 5.8 system off my mini quad and off we went. Man I thought the maiden was fun, holy cow this thing is nuts under the goggles.
My friend also got some fantastic areal footage from his blackout. Bad news is I have about an hour of footage to sift through and edit now. I'm uploading maiden video, my friends' first flight on it, and some on board video to youtube as I type this. All off these videos are just raw footage, and the on board video in not for those with motion sickness. It's not shaky video at all, however we were so impressed with how well it flew on our first tries, that we didn't hold back much on the second.
Sadly, as you'll see as soon as I get the videos edited, I wasn't to kind to it during the fpv portion of the day. First flight I tossed it up and went to head it out away from us so I could toss my buddy the sticks and through my goggles on. Some how I lost orientation and stuffed it in the ground nose first. Took the hit just fine, the bottom of nose was all that took damage, and it wasn't much. Later I dumped it taking a weird angle under the arm of a backhoe. That did a bit more nose damage, but still completely flyable. The added mushiness to the nose however turned my beautiful jello free video, into something not as good. Still not terrible, but seeing how good it was to start it kind of bums me out. All in all shes still flying great, but not as pretty as she was when the day began. Life of an RC pilot I suppose.
Pictures of the damage. Awesome note here, I flew her back to me from quite a distance away the those props in that condition. The noise it made as that one blade of the prop on the outer starboard side slapped against the wing was horrendous. But yet it still flew back to me as nothing was wrong, blew my mind.
Videos will be up as soon as youtube finish's editing the maiden, you can blame that on my friend who just had to drop an F bomb, on a video he recorded in 4k on his brand new galaxy s5, so it's now going to take extra long to edit. Don't worry, I yelled at him already for it.
Videos are up!!! Hopefully I'll have some of the FPV videos up tomorrow. Enjoy these for now.
Maiden
My friends first flight on it
On Board Video
It's first FPV video, and chase video rough edits have been done.
First FPV Flight for the Quad Bloody Video Highlights
Chase Video Highlights, Courtesy of my friend and his blackout mini quad.
Update 3
I just wanted to add in the list of electronics, and materials used.
Dollar Tree Foamboard
Motors - 4x RCX 1804 2300kv
ESC's- F-12a Fire Red Series (simonk flashed)
Servos- http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=23594
Pushrods- 1.8mm Carbon Rod
WingSpar- 1x6x750mm Carbon Strip
Motor Mounts- Roughly 1inch squares of 1/8" hobby ply
Lots of Hot Glue
Packing Tape
A few nights ago I stumbled across Flying201's build log of his Twin Bloody Wonder. Being that I currently needed a new fpv air frame, and seeing how sweet his twin was, I thought about how I could go about making one with what I had laying around. My mind immediately went to my plethora of spare mini quad motors and esc's, they needed a home, but how to incorporate them? I first thought since Flying201 up scaled his a bit to better accommodate the two standard sized BW motors, I'd just make a normal sized one with two mini quad motors. I entertained that idea until I cut out the wing and realized how tiny two 5" props would be on it, so quad bloody it is!
I started out by simply cutting out a standard wing for the BW, as well as the wing spar. I then added a 1x6x750mm carbon strip in between the foam spar as I folded it over for added rigidity. Next I marked out my spacing for the motors, and put some thought into the wiring and esc placement. I decided to cut holes in the bottom of the wing for the esc's to sit flush with, and allow air to pass over them. Now knowing what I needed for wire length I began my harness for everything. A few hours, and quite a bit of head scratching later I had everything wired up and the motors spinning in the proper directions.
Next I cut out roughly one inch squares of some 1/8" hobby ply I had around to use for motor mounts. After drilling some holes for the motor shaft, and screws to go I had all my motors mounted, ready for installation. I carefully laid everything out in its spot and used some hot glue to tack the wires down in place to allow me to fold the wing over. Here is where I finally thought, hey you should take some pictures. Oh as you can also see in the pic below, I added some foam behind where the motors will mount to give a bit more surface to glue them to.
Next I folded the wing over, and glued it all up, again without taking any photos because let's be honest who really comes into build threads to see pretty pictures of well crafted airplanes? Afterwards I went ahead and glued on the motors, and threw some props on to make me feel some sense of progression. Surprisingly all the motors spin, not only that, they spin the right directions! Oh and what's this, I remembered I had a camera again?
Both of these shots are of the underside of the wing.
Well, that's it for the moment. I figured getting all that done would be the longest part of the process, and I was right. I could have made 2 standard BW's by now, but I think this might be worth it. Stay tuned for more, should have a good chunk done tomorrow night as I'd really like to maiden it this weekend.
Anyone know of an average AUW for a standard Bloddy Wonder? I never weighed any of mine and I'm curious as to how this will stack up. Currently I'm up to 290 grams as you see it in the last picture.
Update 1
So earlier today I finished off cutting out and taping up all the remaining piece's before work. Well having been home for a few hours now, I pretty much finished everything else up. I've yet to attach the vert stabs so they don't get in the way of me running the pushrods. I just slid them in the slots for the photos below to complete the look. My flying buddy is going to bring me some linkage stoppers tomorrow morning so i can finish up the control surfaces, and off to maiden. Differential thrust has also been setup, and seems likes it's still going to have insane yaw authority even without a rudder.
The one thing that's really turning me off is the front, that square tube is really bothering me. Problem being I cut the fuselage to a pretty tight fit to my fpv board cam, not really giving me any room for modification. If anyone has any simple ideas for adding some shape to it, I'm open to suggestions. I am going to probably take about an inch off the length of the nose. I made it long intentionally because I was unsure of how the CG was going to end up, but it's not a problem at all. I think that's about it for now, enjoy the pics.
Fun Fact: These motors once flew my 250mm sized mini quad that weighed 610 grams, so this should be fun.
Update 2
So I went out early today and had an extremely successful maiden, really thrilled with the way this flies. I ran home with the intentions of uploading the video's, but my flying buddy convinced me to slap my fpv gear on it, and go fly with him and his blackout mini quad. So I sadly yanked my 5.8 system off my mini quad and off we went. Man I thought the maiden was fun, holy cow this thing is nuts under the goggles.
My friend also got some fantastic areal footage from his blackout. Bad news is I have about an hour of footage to sift through and edit now. I'm uploading maiden video, my friends' first flight on it, and some on board video to youtube as I type this. All off these videos are just raw footage, and the on board video in not for those with motion sickness. It's not shaky video at all, however we were so impressed with how well it flew on our first tries, that we didn't hold back much on the second.
Sadly, as you'll see as soon as I get the videos edited, I wasn't to kind to it during the fpv portion of the day. First flight I tossed it up and went to head it out away from us so I could toss my buddy the sticks and through my goggles on. Some how I lost orientation and stuffed it in the ground nose first. Took the hit just fine, the bottom of nose was all that took damage, and it wasn't much. Later I dumped it taking a weird angle under the arm of a backhoe. That did a bit more nose damage, but still completely flyable. The added mushiness to the nose however turned my beautiful jello free video, into something not as good. Still not terrible, but seeing how good it was to start it kind of bums me out. All in all shes still flying great, but not as pretty as she was when the day began. Life of an RC pilot I suppose.
Pictures of the damage. Awesome note here, I flew her back to me from quite a distance away the those props in that condition. The noise it made as that one blade of the prop on the outer starboard side slapped against the wing was horrendous. But yet it still flew back to me as nothing was wrong, blew my mind.
Videos will be up as soon as youtube finish's editing the maiden, you can blame that on my friend who just had to drop an F bomb, on a video he recorded in 4k on his brand new galaxy s5, so it's now going to take extra long to edit. Don't worry, I yelled at him already for it.
Videos are up!!! Hopefully I'll have some of the FPV videos up tomorrow. Enjoy these for now.
Maiden
My friends first flight on it
On Board Video
It's first FPV video, and chase video rough edits have been done.
First FPV Flight for the Quad Bloody Video Highlights
Chase Video Highlights, Courtesy of my friend and his blackout mini quad.
Update 3
I just wanted to add in the list of electronics, and materials used.
Dollar Tree Foamboard
Motors - 4x RCX 1804 2300kv
ESC's- F-12a Fire Red Series (simonk flashed)
Servos- http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=23594
Pushrods- 1.8mm Carbon Rod
WingSpar- 1x6x750mm Carbon Strip
Motor Mounts- Roughly 1inch squares of 1/8" hobby ply
Lots of Hot Glue
Packing Tape
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