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May 24, 2019, 05:38 PM
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RNAF's Avatar
Duplicate
Last edited by RNAF; May 25, 2019 at 03:45 AM. Reason: Scusi
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May 24, 2019, 05:40 PM
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RNAF's Avatar

Got some video!


This thing really is rewarding!
Flown by a friend

Nutball (0 min 45 sec)
May 25, 2019, 01:32 AM
Mark Harrison
Quote:
Originally Posted by RNAF
This thing really is rewarding!
Flown by a friend

https://youtu.be/ZQ08Dex5J4U
Very nice, tonight we eat pizza to celebrate your success!
Last edited by marhar; May 25, 2019 at 01:39 AM.
May 25, 2019, 03:47 AM
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RNAF's Avatar
My thoughts exactly!
May 26, 2019, 03:20 PM
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Terry Rigden's Avatar
Looks and flies good, pretty much like mine.
May 26, 2019, 03:25 PM
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RNAF's Avatar
Itís good, huh? Building an LRF (large room flyer) version now after I got cheeky and flew the 250mm one in the studio!
I hope to get under 4 grams. Proportional rudder and throttle, 160mm. Covered bare frame is 0,41 with electronics and rudder 2,51 grams so itís promising.
Last edited by RNAF; May 26, 2019 at 03:40 PM.
May 26, 2019, 04:43 PM
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RNAF's Avatar

Flew it!


A better gearbox/ prop combo, 20mA Lipo would be great. A dynamically balanced rudder also. About 3.9 grams. Flew a circle or two. Pretty cool.
May 27, 2019, 03:49 PM
flyin' fool
goldguy's Avatar
Thread OP
I'll say. More than cool.
May 28, 2019, 03:24 PM
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Terry Rigden's Avatar
Brilliant, any chance of a video
May 29, 2019, 12:59 AM
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RNAF's Avatar
Thanks guys. Broke a motor wire adjusting the thrust angle model itself is very durable!! Will make a vid at the next opportunity
Jun 01, 2019, 03:51 AM
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RNAF's Avatar
The model didn’t make it
Changed to a 100mm prop and reset the thrust angles. It heavily nose-dived a couple of times and the left side rib cracked. I didn’t notice but it caused it to spiral down and got beaten more. Tried to re-glue that stick but there is too much tension from the film Really difficult stuff and so sensitive! I miss elevator too. Oh well maybe later, it was a fun side project for now
Jun 02, 2019, 03:09 AM
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Terry Rigden's Avatar
Oh well nice try
Jun 04, 2019, 06:29 AM
Registered User
I have a HK Nutball (pnf) (460mm) and lost my models on my TX. I have the CG on 120mm (thats about 25%) with a little up on the elevator.

Can some one please give me info on the throw of the elevator and rudder?
And what is a decent expo and dualrate for a beginner?

My little son finally wants to try and fly it. And I want to set it up as easy and forgiving as possible.

Quote:
Found my answer here: https://www.rcgroups.com/forums/show...ostcount=16169

Changed them to a 460mm nutball and to metrical.
This comes to 30mm throws and 4mm up on elevator and 50% expo to start with.

Extra tips are appreciated!
Last edited by humptydumpty; Jun 04, 2019 at 10:38 AM. Reason: Found answer on my question
Jun 04, 2019, 01:22 PM
flyin' fool
goldguy's Avatar
Thread OP
To make a NB a docile flyer, keep the CG forward, reduce the throws to a minimum and don't use full throttle. Spend some time getting the adjustments right.

I don't use expo or dual rates on the TX, it's all programmed in my brain. Using just the trims and low throttle I got mine setup to free flight around a gym thirteen circuits with the TX on the floor before picking it up.
Jun 04, 2019, 02:05 PM
IMO ( In My Opinion ) →
balsa or carbon's Avatar
Quote:
Originally Posted by humptydumpty
I have a HK Nutball (pnf) (460mm) and lost my models on my TX. I have the CG on 120mm (thats about 25%) with a little up on the elevator.

Can some one please give me info on the throw of the elevator and rudder?
And what is a decent expo and dualrate for a beginner?

My little son finally wants to try and fly it. And I want to set it up as easy and forgiving as possible.
Slow flight can be a big advantage for a beginner ( gives a beginner time to think , time to react , and time to correct a mistake ) . To make a NutBall slow flying , build a much larger airframe .... for lower wing loading . You could borrow the electronics from your HK NutBall , then transfer them back later . Here is a 26" NutBall built & set up for slow flight :


26" Nutball RC plane (1 min 49 sec)




Set up the rudder & elevator travel/expo to have just enough throw to make mild turns , and you probably won't even need any down elevator travel .
Last edited by balsa or carbon; Jun 04, 2019 at 02:12 PM.


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