Plans for the Kolibri high-alpha flyer
- Thread starter Dr. Looping Looie
- Start date
-
- Tags
- high alpha plans stunts
Dr. Looping Looie
Elite member
Yes, its super cool!Nice looking build!!
@Dr. Looping Looie it's a pretty awesome feeling seeing other people build your designs, isn't it? Sure is one of my favorite things about releasing plans
Thanks for your interest in my designs, for me as a scratch builder, its a lot of extra work to do plans and stuff, and its great to see the community helping each other out and building the designs! Im still trying to do plans myself, so maybe you can expect some stuff in the near future!
jpot1
Elite member
@Yawnsky24 - how did the plans work out? I had to guess on a couple of things and had not built it to check.
I can certainly scale things down and adjust the folds accordingly but was sticking to @Dr. Looping Looie orig design. Let us know how it fly’s and then I’ll adjust.
Yawnsky24
Member
Looping Looie, my hat is off to you and the community of designers here. I'm not a designer, just not in my skill set so far but I love to scratch build and fly. Between Flight Test and the awesome community, I never have a shortage of great designs to try!
It looks like the weather here is going to be pretty wet this weekend so probably will not be able to maiden until next weekend. As soon as the weather cooperates I will try to get some video to put up of the Kolibri in flight.
It looks like the weather here is going to be pretty wet this weekend so probably will not be able to maiden until next weekend. As soon as the weather cooperates I will try to get some video to put up of the Kolibri in flight.
Yawnsky24
Member
Jpot1, the plans worked out great. I printed full size first but realized that it was a little larger than the FB sheet size. I scaled down to 85% and everything came out great. All of the channels were fine as is with no changes. I guessed a little on the mating of the wing to the main fuse as there is a gap at the front and the main fuse does not go all the way back to the rear of the wing. I just went with it and it looks pretty good as is. I did add a small spacer between the font of the motor mount and the end of the hatch which seems to have worked as well.
for the servos, I mounted them in the fuse on the bottom. I saw that Looping Looie had his servos in the vertical stabs on top but it was easier to put them on the bottom for me. I really thought that it was going to be tail heavy with the tape but I actually have to move the 650Mah 3S fairly far back in the nose to balance at LL's recommended location. I'll let you know once I get a chance to maiden how it flies.
Altogether a fun build and plans were right on!
for the servos, I mounted them in the fuse on the bottom. I saw that Looping Looie had his servos in the vertical stabs on top but it was easier to put them on the bottom for me. I really thought that it was going to be tail heavy with the tape but I actually have to move the 650Mah 3S fairly far back in the nose to balance at LL's recommended location. I'll let you know once I get a chance to maiden how it flies.
Altogether a fun build and plans were right on!
Dr. Looping Looie
Elite member
@Yawnsky24 some tipps for your maiden about how it flies: first, you might get pretty hard wing rock, dont try to fight it, it wont turn the thing over. Second, it doesnt really matter how much you pull that elevator, it wont stall. For high alpha manouvers, pull back the elevator all the way and controll your angle with your throttle. The best way to launch it is to put it almost vertical on the ground and launch it like a rocket.
Have fun and tell us your experiences!
Have fun and tell us your experiences!
Yawnsky24
Member
Looping Looie, quick question. I was looking at the post for your Kolibri in the Mad Scratch Builders forum and it looked like there was a bit of "up thrust" on the pusher motor. I have the motor mounted pretty much flat to the back of the fuse and was wondering if I should change that a bit prior to the maiden. I know that is normal on many pusher type planes but did not even consider for this one.
Let me know if you get a chance. If not, I will try it as is and then odify and try to see what works best.
Thanks, Jan
Let me know if you get a chance. If not, I will try it as is and then odify and try to see what works best.
Thanks, Jan
Dr. Looping Looie
Elite member
@SP0NZ oh hell yes that would be epic! Thank you so much!
@Yawnsky24 theres absolutely no thrust angle, so youre alright! After youve flown it abit, could you also tell us the things you didnt like, that way we can make it better!
@Yawnsky24 theres absolutely no thrust angle, so youre alright! After youve flown it abit, could you also tell us the things you didnt like, that way we can make it better!
Dr. Looping Looie
Elite member
Today, I got the chance to make a video.
@Yawnsky24 maybe, a little bit of negative thrust angle isnt too bad, it really pitches up at full speed. Im going to try it tomorrow.
@Yawnsky24 maybe, a little bit of negative thrust angle isnt too bad, it really pitches up at full speed. Im going to try it tomorrow.
Let me know when you are done tweaking on the design and want the final plans prepared.
Dr. Looping Looie
Elite member
As you can see on the video, its pretty much perfect. Only problem is that the batteries need to go very far in the back, so I would suggest make the cutout in the front of the wing abou 3cm longer, so that the wing (with CG ) shifts a little forward. That would increase battery range and make battery changes easyer. Other than that, go ahead, and thak you so much for doing this!
jpot1
Elite member
Let me try. It’s currently in Inkscape.
Works great! Thank you.
Dr. Looping Looie
Elite member
@Yawnsky24 Did it fly? Any new update?
