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Old Jul 02, 2010, 12:30 PM
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Did you find that you needed a bigger motor for that many blades or just different gearing ???
Looking good so far ... good luck ,, love that Hind
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Old Jul 14, 2010, 08:41 PM
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I knew I was going to need some extra power for this system. I went with a Scorpion HK-4025 630kv and a 9 tooth pinion on 10S. I am governing the rotation at 1600 rpms. If my calculations are close I should get 8-10 minutes of flight depending on the final weight. I was planning on around 9 pounds at the heaviest. So far it does fly, but I have had some issues. Namely, I get some tracking and and vibration issues with some cyclic inputs. I am still adjusting a few things. I think it may have been slightly unbalanced blades. Which is a pain in the butt with 5 blades. I re-balanced and double checked tracking, but have not been able to test fly it since I made the adjustments as the weather has not permitted in the last week. I just want to feel comfortable with the mechanics before I start to put together the fuse. Between work and summer activities it has been hard to devote a ton of time to this project. It'll get there though.
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Old Jul 14, 2010, 09:46 PM
2013 GRAND SPORT CORVETTE
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Golden Gulf Coast
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You’re on the right track for sure Fishrider. Get all the kinks worked out at the pod & boom stage and it will make the transition to installing the wrapper a lot less stressful. I have, on occasion, installed the mechanics in the primed fuselage before all the super detailing begins and flown the bird again just as insurance.

Cheers - Boyd
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Old Sep 17, 2010, 10:45 PM
It should fly at least once
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Old Sep 18, 2010, 03:55 PM
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Build Pics

I had planned to fit the mechanics before starting work on the fuse details, but some set backs changed my plan. My Skookum 720 broke and I had to send that back. Also, my head had an issue, and I will not get a new head until the end of September. So I started work on the rear landing gear.

The original back doors supplied with the model are not big enough to fit the gear properly. So I carved out a bit more, and placed the doors closer to what I think is scale. I had to make new back doors. I placed tin foil over the openings and laid up the fiber glass in place. I used 2 layers of medium cloth with a polyester resin. It really is easy to work with, and if you mess up make another. I used one of the supplied wells as a form to make the wheel well that is attached to the doors, and then placed them where I wanted and fused them together with another coat of resin.

When complete the back landing gear will be a fully autonomous unit. I will be able to take it out to fix issues or make modifications.
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Old Nov 08, 2010, 02:01 PM
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Retracts

I finally got some time to work on this project. Here is a short video of the the rear retracts.

Hind Retracts 1.wmv (0 min 39 sec)


I have to apologize to Kin and Willis as I was supposed to have an installation of the Swift 16 mechs by now. I have just had no time to work on my hobbies lately.
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Old Nov 08, 2010, 02:27 PM
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Great looking retracts!
best wishes,
jeff
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Old Nov 08, 2010, 02:48 PM
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Looks great ... where did you get the spring loaded landing gear ??? or are they home brew ????

Those where the easy part ,,, now comes the trying to hinge two doors and time them to close like the real one

Keep up the good work .
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Old Nov 08, 2010, 06:15 PM
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Great progress on the LG. Thanks for sharing.
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Old Nov 08, 2010, 07:34 PM
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Quote:
Originally Posted by v22chap View Post
Looks great ... where did you get the spring loaded landing gear ??? or are they home brew ????

Those where the easy part ,,, now comes the trying to hinge two doors and time them to close like the real one

Keep up the good work .
Yes, all home made with aluminum tubing, springs, and 2mm swivel ball links. I am using a Thompson Automation landing gear controller. I have to order another one and use two in a chain to get the proper sequence for these doors, but it should work pretty well. But your right it will be a pain. Hours of adjustment fun.

Thanks for the kind words everyone.
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Old Nov 08, 2010, 07:52 PM
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Fish
I don't have the kit ,but have drooled for many yrs at the turbine one and also figured out some landing gear for a 450 darthdark mi 24 ... and did some study on the doors and decide not !!!

Good luck ... when you get it figured all out ... please give us a layout diagram and parts list needed as this is in the future
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Old Nov 10, 2010, 03:30 PM
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Nice!.... thanks for shearing….

Trick-or-treat look at the candy at the back

Dan

Quote:
Originally Posted by Fishrider View Post
I finally got some time to work on this project. Here is a short video of the the rear retracts.

http://www.youtube.com/watch?v=vlVLL_bpoQ4

I have to apologize to Kin and Willis as I was supposed to have an installation of the Swift 16 mechs by now. I have just had no time to work on my hobbies lately.
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Old Nov 10, 2010, 09:22 PM
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Originally Posted by skyhunter357 View Post
Nice!.... thanks for shearing….

Trick-or-treat look at the candy at the back

Dan
Nice spotting Dan. Were you talking about the Halloween candy or your head? I have to say it flew really well the other day. As of this writing I took apart the mechanics to begin the install so the next time you see the head it will be inside the fuse. Although, by that time the candy should be cleaned up.
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Old Nov 16, 2010, 12:44 AM
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Quote:
Originally Posted by Fishrider View Post
Nice spotting Dan. Were you talking about the Halloween candy or your head? I have to say it flew really well the other day. As of this writing I took apart the mechanics to begin the install so the next time you see the head it will be inside the fuse. Although, by that time the candy should be cleaned up.
Oh yah that too! nice rotor head
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Old Nov 18, 2010, 03:21 PM
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Germany, land of inventors
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Fishrider .. these retracts are really cool. I still have to build my Mi 24 ... it's sitting here and waiting. Could you do me a favour and show some detailed pictures of your retracts? Maybe with some measurements? Which mechanics did you use to take the legs?
I plan to use micro servos on the doors and programm a microcontroller for it. The circuit is small and cheap to do these kind of things. But it will take some time.
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