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Old Dec 03, 2012, 05:12 PM
Registered User
United States, OR, Bend
Joined Jan 2008
252 Posts
Quote:
Originally Posted by AUTO_XX View Post
shelterock sent me this way so I figured I'd list my build;

Talon tri with 380mm booms
11X4.7 Gemfans for hovering around 12X6 for FFF (fpv)
35-36a NTMs, 910kv
Plush 40s
S306G-HV digital servo (crazy fast, I think it is 0.05s)
3s 2200-8000 (haven't tested the 8000 yet but there is no difference between 3A and 5A Lipo)
KK2 updated to 2 weeks ago (whatever version THAT was...)
XT90 + 3.5mm connectors
Lost model alarm
900mHz, 1500mW Tx with a 0.008lux camera (In a dollar store tupperware container)

~20 minutes of hovering around on a 5000, 15min of ripping around the yard.
~12 on a 3000
.
hi guys,
going to get one of these talon tris For FPV/GoPro3 video and I have a question....

Should I build with a more powerful motor set like AutoXX did (over 3lbs) or go for smaller motors and props like shelterock? My main goal is smooth flight first and 15 min flight times.

The motor question is confusing me so explanations (or links) of the ramifications of different motor/prop/batt sizes would be great.

Lastly, I would really like to hear what motors you all consider to be the best for ~$50 or less.

thanks a bunch!

Jeff
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Old Dec 03, 2012, 06:33 PM
Fly, crash, rebuild.
United States, NY, Shelter Island
Joined May 2011
880 Posts
Quote:
Originally Posted by jeffyd123 View Post
hi guys,
going to get one of these talon tris For FPV/GoPro3 video and I have a question....

Should I build with a more powerful motor set like AutoXX did (over 3lbs) or go for smaller motors and props like shelterock? My main goal is smooth flight first and 15 min flight times.

The motor question is confusing me so explanations (or links) of the ramifications of different motor/prop/batt sizes would be great.

Lastly, I would really like to hear what motors you all consider to be the best for ~$50 or less.

thanks a bunch!

Jeff
Jeff,
I don't fly FPV so I would definitely go up in motor size. I think a big 28mm 28-36 would great. 35mm is big. Gopro3 + FPV gear will be under 2kg depending on battery. 3300 gets me 10 min on a good day. FPV and fast flying that will drop. 5000mah battery and gear will probably get you 2.5kg so you need at least 3kg of thrust to have fun!
H
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Old Dec 03, 2012, 07:06 PM
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United States, OR, Bend
Joined Jan 2008
252 Posts
thanks for the answers and so much other info on this downright nifty frame shelterock.

AutoXX's flight times are really amazing. Im leaning toward a build like his but Im nervous as I haven't seen anyone else do that powerful of a set up.
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Old Dec 03, 2012, 08:01 PM
Fly, crash, rebuild.
United States, NY, Shelter Island
Joined May 2011
880 Posts
Quote:
Originally Posted by jeffyd123 View Post
thanks for the answers and so much other info on this downright nifty frame shelterock.

AutoXX's flight times are really amazing. Im leaning toward a build like his but Im nervous as I haven't seen anyone else do that powerful of a set up.
Weigh is the enemy. Building more than you need is wasted energy. Auto_xx may have bigger plans.
With 380mm arms you can swing a big prop, low kv and 3s battery. With a 2836 you could easily swing an 11-12" prop with 750kv. Keeping flight times in mind, you need lift and low amp draw.
My next build would be 13" prop sf or e-props with 3s running 600-750 kv. That will be sufficient lift and low amp draw for longer flight times. 5000mah battery.
Take a look at "the ultimate FPV tricopter" thread by myrcbuild.com. You can get some ideas on setups there too. My 2826 -1000kv is better on 4s because 221mm setup doesn't like the bigger props. I'm limited to 10". 9" props are anemic.

There is a long duration thread for multis in here somewhere if you really want to fry your brain.
It's all a trade off.
H
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Old Dec 03, 2012, 08:19 PM
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United States, OR, Bend
Joined Jan 2008
252 Posts
ya my brain fried a while ago... Im a shattered man trying to loft a folding tri LOL.

after what you said in your vids that you dont like large props on this airframe due to vibrations (& other things)... I wonder what its like on AutoXX's bird. I am also curious how it pulls out when diving @1.8Kg.

What does your weigh shelterock?
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Old Dec 03, 2012, 09:00 PM
Fly, crash, rebuild.
United States, NY, Shelter Island
Joined May 2011
880 Posts
Quote:
Originally Posted by jeffyd123 View Post
ya my brain fried a while ago... Im a shattered man trying to loft a folding tri LOL.

after what you said in your vids that you dont like large props on this airframe due to vibrations (& other things)... I wonder what its like on AutoXX's bird. I am also curious how it pulls out when diving @1.8Kg.

What does your weigh shelterock?
Large props on short arms is the problem. Your 380mm arm will eliminate that problem. You could Go for 11-12" maybe 13" props
2200mah contourhd weighed in at 1.1-1.3 kg if I remember. 850g without. You'll have to put a lot on for 2+ kg. I had 10x6x3 props on the 320mm quad arms that I cut slits in for the pivot. Flew great. Very smooth. 380mm can handle more prop because of the room. No prop wash on the frame/body.
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Old Dec 03, 2012, 09:39 PM
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United States, OR, Bend
Joined Jan 2008
252 Posts
Ahhhh Ok. So Ill get the longer arm kit too. Im surprised your motors can turn 10x6x3 props.


would your talon tri, with what gear is on it now (except props) carry a 5amp battery?
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Old Dec 04, 2012, 07:05 AM
Fly, crash, rebuild.
United States, NY, Shelter Island
Joined May 2011
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Quote:
Originally Posted by jeffyd123 View Post
Ahhhh Ok. So Ill get the longer arm kit too. Im surprised your motors can turn 10x6x3 props.


would your talon tri, with what gear is on it now (except props) carry a 5amp battery?
I don't own a 5000mah pack in 3S.
The NTM2826-1000kV can handle 315w. I'm pushing all up 300w through 3 motors combined on a hard pump of the throttle. Hover the whole rig pulls 150w and 21 amps. So 100w & ~7-8a per motor. Plenty of headroom with 10" 3 blade props.
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Old Dec 04, 2012, 10:50 PM
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United States, OR, Bend
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OK, thanks for the explanation.

I used to hang out at Shelter Island in San Diego BTW.
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Old Dec 05, 2012, 07:40 AM
Fly, crash, rebuild.
United States, NY, Shelter Island
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Originally Posted by jeffyd123 View Post
OK, thanks for the explanation.

I used to hang out at Shelter Island in San Diego BTW.
I've never been there but I did have my feet in the sand on shelter island, went JFK, flew to San Diego and stuck my feet in the sand on Coronado island in the same day.
H
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Old Dec 05, 2012, 08:24 PM
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well! then that was a good day. I miss san diego but couldnt afford to live there anymore.
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Old Dec 06, 2012, 07:57 PM
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hi guys,

Im preparing my order and was wondering if anyone has a preference for either of these motors.

Turnigy_D3536_9_910KV_Brushless_Outrunner_Motor.ht ml

NTM_Prop_Drive_Series_35_36A_910Kv_350W.html

Also I have read that the turnigy plush ESCs cant take simonK;s firmware anymore? Does anyone know if that is true?

thanks

Jeff
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Old Dec 06, 2012, 08:08 PM
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United States, FL, Miami
Joined Jul 2012
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Quote:
Originally Posted by jeffyd123 View Post
Also I have read that the turnigy plush ESCs cant take simonK;s firmware anymore? Does anyone know if that is true?

thanks

Jeff
New Plush are silabs chips so yea, you cant flash with simonk
http://wiki.openpilot.org/display/Doc/RapidESC+Database
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Old Dec 06, 2012, 09:00 PM
Team WarpSquad
Japan, Tokyo
Joined Jun 2011
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Quote:
Originally Posted by jeffyd123 View Post
hi guys,

Im preparing my order and was wondering if anyone has a preference for either of these motors.

Turnigy_D3536_9_910KV_Brushless_Outrunner_Motor.ht ml

NTM_Prop_Drive_Series_35_36A_910Kv_350W.html

Also I have read that the turnigy plush ESCs cant take simonK;s firmware anymore? Does anyone know if that is true?

thanks

Jeff
Just put an order in for the F-30A while you're at the HK site and just wait for them to arrive. It's usually not that long a wait. Better to get the F-30A rather than the F-20A as well since the weight is the same and you'll have more headroom.

<$10 a pop and widely recommended by people who know more than me!
and flash-able.
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Old Dec 06, 2012, 09:05 PM
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Joined Jul 2012
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Quote:
Originally Posted by thwaitm View Post
Just put an order in for the F-30A while you're at the HK site and just wait for them to arrive. It's usually not that long a wait. Better to get the F-30A rather than the F-20A as well since the weight is the same and you'll have more headroom.

<$10 a pop and widely recommended by people who know more than me!
and flash-able.
agreed! +1
but sometimes it takesclose to two months :/
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