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Old Jan 30, 2013, 04:35 AM
B12
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Originally Posted by FASTBEN View Post
if you dig you will see that small 2221/18-8 can swing 19xxxx prop producing over 2900+g of thrust with this gearbox.


http://www.reisenauer.de/artikelauswahl.php5?kid=81
It may sound so but I am not an outrunner diehard.

I would be very interested in geared inrunner for trashliner use. Inrunners come in huge variety and even some pretty cheap ones can be pushed pretty hard on short bursts.

The issue is the reduction gear. Reisenauer, NEU (unobtainable?) are 150-200 apiece which is a huge sum of money on top of a $30 motor and $30 esc for budget setup. $400-500 geared NEU or Hacker is definitely out of question. High quality or not, it is simply too much money for such a tiny dental drill.

Are there any reasonably priced gears on existence that will take couple of kilowatts on bursts? An affordable direct drive outrunner will haul a regular rc glider to the sky just as well as a geared inrunner. F5B etc are different animal.
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Old Jan 30, 2013, 08:37 AM
fast,,,, faster
FASTBEN's Avatar
KELLER TEXAS
Joined Feb 2002
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I am sure there are some inrunner's out there that you can attach the above gearbox to and get this plane in the air,like ammo 28/35/3900 for less than $100.
I think it all comes to what kinda performance the individual is looking for.
IMHO inrunner's are no match for out runner performance. Apple to apple
Ben
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Last edited by FASTBEN; Jan 30, 2013 at 08:44 AM.
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Old Feb 01, 2013, 03:11 PM
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I have been very interested in this thread as I am also in the process of building a Nan Orion. I am the friend that "rofly" mentioned a couple of days ago who is using a Neu 1110/1y/6.7. As far as a low cost motor, what about a Tacon Big Foot 25 Brushless Out Runner Motor (870KV.) It's 35mm in diameter. http://www.hobbypartz.com/96m603-big...826-870kv.html
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Old Feb 01, 2013, 03:42 PM
still trying to get it right
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benelux
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Quote:
Originally Posted by fj60tlc View Post
I have been very interested in this thread as I am also in the process of building a Nan Orion. I am the friend that "rofly" mentioned a couple of days ago who is using a Neu 1110/1y/6.7. As far as a low cost motor, what about a Tacon Big Foot 25 Brushless Out Runner Motor (870KV.) It's 35mm in diameter. http://www.hobbypartz.com/96m603-big...826-870kv.html
This is very much like the turnigy/dualsky etc 3548-05 850kv lump 170g I have run the coordinates through ecalc and come up with 700w.

2500 3s x 35-45c lipo. 29.6 amps 12x6 prop max 1662g thrust 1.11 to 1 ratio

2500 4s x 35-45c lipo 40.83 amps 11x7 prop max 2526g thrust 1.68 to 1 ratio

with a decent 45/50 amp esc you can swap between lipos and blades to suit. hope that helps.
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Old Feb 03, 2013, 04:11 AM
still trying to get it right
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benelux
Joined Feb 2009
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Ok My latest find. Hyperion GS 3020-12 792kv

16 x 8 prop 3064grms thrust!! at 59 amp draw which is around 2-1 ratio . I think this will be my install set up as for power I do not reckon I can beat this but I will keep looking.
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Old Feb 03, 2013, 06:33 AM
B12
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Originally Posted by yakhakker View Post
Ok My latest find. Hyperion GS 3020-12 792kv

16 x 8 prop 3064grms thrust!! at 59 amp draw which is around 2-1 ratio . I think this will be my install set up as for power I do not reckon I can beat this but I will keep looking.
That is too big prop with too low pitch. High amp draw, low thrust, low speed, bad motor efficiency.

Try 14x10. 3088g thrust 52A and 100km/h pitch speed. It will haul it to the sky much faster with less amps. Plus better motor efficiency for less heatup.

Or 14x12, 3400g, 57A, 115km/h

14x13, 3600g, 60A, 122km/h
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Old Feb 03, 2013, 07:31 AM
still trying to get it right
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benelux
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Quote:
Originally Posted by B12 View Post
That is too big prop with too low pitch. High amp draw, low thrust, low speed, bad motor efficiency.

Try 14x10. 3088g thrust 52A and 100km/h pitch speed. It will haul it to the sky much faster with less amps. Plus better motor efficiency for less heatup.

Or 14x12, 3400g, 57A, 115km/h

14x13, 3600g, 60A, 122km/h
Thanks for that, I am new to Ecalc and just finding my feet with it.
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Old Feb 03, 2013, 09:26 AM
B12
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Yep, Orion is a slippery ship. With more pitch speed you can accelerate horisontal for couple of seconds, pull to vertical climb and watch it disappear in the cloud
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Old Feb 03, 2013, 09:52 AM
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Guys, don't bet the farm on the numbers E-Calc puts out. It is a great tool, but it only works to get you roughly in the ballpark. Get a starting point, fly your setup, and then change as necessary until you get what you want.
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Old Feb 03, 2013, 12:00 PM
B12
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Finland
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My experience with ecalc and (mostly) hobbyking motors turning Aeronaut folding props have been pretty much spot on. Within couple of amps in the 40-70 amp range.
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Old Feb 04, 2013, 07:41 PM
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Here are some pictures of an Orion im in the process of completing.

Enjoy
Joe
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Old Feb 04, 2013, 07:41 PM
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The Plane is now complete and ready to ship back to its owner

Joe
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Last edited by J. Wydronek; Feb 04, 2013 at 08:49 PM.
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Old Feb 04, 2013, 09:03 PM
Retirement is good
United States, CA, Huntington Beach
Joined Jun 2011
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Curious minds want to know... Care to offer full specs on all the parts including AUW, balanced, ready to fly?

(Nice prop, narrow blade RFM? Love my 13x9. That's bigger!)
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Old Feb 04, 2013, 09:22 PM
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United States, AZ, Buckeye
Joined Mar 2010
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Hyperion ds09 ailerons
hi tec hs125mg for flaps
castle ice lite 100 amp
separate 10 amp because
can't recall elevator and rudder servo and don't want to remove the hatch.
I do not have a scale. But without a battery it feels lighter than my 67oz Aspire.
It also has the neu motor with gearbox. Which size I'm not sure. But is spinning a 16x16 prop.
wish I could give you the exact Auw. And as for c.g. I don't have the battery that the owner will be using so he will set the c.g. to his taste.


Joe
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Old Feb 04, 2013, 11:06 PM
Retirement is good
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Thanks Joe. Beautiful build. Congrats.

Picture looks like a NEU 1110/1Y. 6.7:1 GB maybe? 16x16 RFM is going to work that puppy hard I think. Is owner thinking 3S or 4S.

All of this will help my flying buddy who is waiting for the airframe but has the electronics sans prop.

Regards,

Dick
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