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Old Jan 14, 2012, 07:04 PM
30 RC's and counting
Bmr4life's Avatar
Atlanta, GA
Joined Mar 2005
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Originally Posted by leadfeather View Post
You can measure thrust directly with a scale. Also if you have a tachometer and can measure rpm you can look up thrust for a particular propeller.
So in this setup the prop is pushing down?
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Old Jan 15, 2012, 10:54 AM
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Originally Posted by Bmr4life View Post
So in this setup the prop is pushing down?
I usually have the prop pushing down, but I have also secured the stand to the scale with double sided tape and used it with the prop in the lift direction too.
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Old Jan 15, 2012, 05:32 PM
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Flying monkey mod

Here is one for the video list. The flying monkey mod is what you get when you strap a wing on a multicopter.

Just hovered if for the first time. Forward flight soon if the weather cooperates.

Flying Monkey mod (1 min 20 sec)
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Old Jan 15, 2012, 10:04 PM
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United States, FL, Sarasota
Joined Nov 2010
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Quote:
Originally Posted by leadfeather View Post
Here is one for the video list. The flying monkey mod is what you get when you strap a wing on a multicopter.

Just hovered if for the first time. Forward flight soon if the weather cooperates.

http://www.youtube.com/watch?v=Ti9n3Cp4XNE
Posted. Very cool. Can't wait to see how it flies forward. In forward flight -- is the back motor shut off? Which FC are you using to do this?
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Old Jan 16, 2012, 07:20 AM
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Originally Posted by timnilson View Post
Posted. Very cool. Can't wait to see how it flies forward. In forward flight -- is the back motor shut off? Which FC are you using to do this?
The flight control board controls everything including the elevons on the wing. In forward flight the front motors switch to control yaw, the rear motor shuts off or idles. All the changes happen automatically by the on board computer. Some pretty nice code written by cass3825 as a modification of the basic multwii code.
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Old Jan 16, 2012, 09:32 PM
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United States, FL, Sarasota
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I am happy to announce that DroidWorx is now a sponsor of the Mr. Lifter contest. They are providing an awesome CX4 frame for the winner of a new category: Most Artistically Presented Multi-Rotor. If you have a tricked out, over the top designed and built multi-rotor, this category is for you!
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Old Jan 16, 2012, 10:42 PM
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saabguyspg's Avatar
Calgary Canada
Joined Jun 2006
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cool!!!

is there a category for coldest flight? it's -27 deg C outside... with wind chill it will be -39 tomorrow....



Steve
(wishing mine was cooler looking for the contest
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Old Jan 17, 2012, 06:32 PM
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Spain
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hmmmm

anyone saw this thread?

http://www.rcgroups.com/forums/showthread.php?t=1335765

I think the smallest category havs a lot of candidates under 30 grms...
Saludos,
Jose
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Old Jan 20, 2012, 11:08 AM
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ok i will try again

N-DROID 00001101 quadcopter the concept of Multi rotor N-BoTs explained N3M1S1S (6 min 10 sec)


jump to 3:50 theres more led's on that quad than i put on my crhistmas tree last year lol

Best Artistically Built and Presented Multi-Roto
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Old Jan 22, 2012, 11:10 AM
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this is going to be a good contest. thanks tim...
one question. Best Artistically Built and Presented Multi-Roto, is a video required for this? also i noticed that you made a mistake on the results from last years most efficient duration. Actually Tretch5000's Tricopter was the most efficient. for some reason it was listed in 3rd place but actually had the best numbers by far. i think ledfeather missed it.
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Old Jan 22, 2012, 05:07 PM
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United States, FL, Sarasota
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Originally Posted by Ext450 View Post
this is going to be a good contest. thanks tim...
one question. Best Artistically Built and Presented Multi-Roto, is a video required for this? also i noticed that you made a mistake on the results from last years most efficient duration. Actually Tretch5000's Tricopter was the most efficient. for some reason it was listed in 3rd place but actually had the best numbers by far. i think ledfeather missed it.
This is what the 2011 Most Efficient category lists:
1) ben123's micro hexa 712.5 sec per Ah x #cell
2) Tretch5000's micro quad 472.3 sec per Ah x #cell
3) Tretch5000's tricopter, 1415 sec / (2.500) Ah x 3s = 188.67

You want the sec per Ah x cell to be the highest, no? So 712.5 would beat 188.67 -- or is there an issue with the math?

For the best artistically built category, I think a video would be great. The better the overall presentation, the better your chance in taking home the prize.
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Last edited by timnilson; Jan 22, 2012 at 05:16 PM.
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Old Jan 22, 2012, 05:15 PM
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United States, FL, Sarasota
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Originally Posted by n3m1s1s View Post
ok i will try again

http://youtu.be/Vj4zQrUi8As

jump to 3:50 theres more led's on that quad than i put on my crhistmas tree last year lol

Best Artistically Built and Presented Multi-Roto
Your entry was added to cat VIII
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Old Jan 22, 2012, 05:27 PM
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Originally Posted by timnilson View Post
your entry was added to cat viii
ty
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Old Jan 23, 2012, 06:41 PM
Off Road is the only road
Joined Jun 2011
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Quote:
Originally Posted by timnilson View Post
This is what the 2011 Most Efficient category lists:
1) ben123's micro hexa 712.5 sec per Ah x #cell
2) Tretch5000's micro quad 472.3 sec per Ah x #cell
3) Tretch5000's tricopter, 1415 sec / (2.500) Ah x 3s = 188.67

You want the sec per Ah x cell to be the highest, no? So 712.5 would beat 188.67 -- or is there an issue with the math?

For the best artistically built category, I think a video would be great. The better the overall presentation, the better your chance in taking home the prize.
Oops sorry, i was only looking at the time in seconds.
you are correct. I can't wait to enter in a few categories. Last year i was new to all this so i could not really enter into anything. this year i hope to have improved my flying skills enough to enter.
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Old Jan 24, 2012, 11:34 AM
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Verona Italy
Joined Aug 2005
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tricottero di natale gigante (1 min 1 sec)



This can be artistic?

3,55 meters 2,1 kg

1,1 meters height
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