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Old Oct 17, 2004, 11:16 PM
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Australia
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Indoor RC with GWS IPS gears

Has anyone made an indoor ornithopter with GWS IPS gears?? It will be nice to have a go at it instead of flying commercial unit.
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Old Oct 18, 2004, 05:09 AM
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PARIS
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goto:
http://www.rcgroups.com/forums/showt...=162934&page=2
& old thread
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Old Oct 18, 2004, 11:53 AM
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Dijon. France
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Yes, Martin
My Birdy http://perso.wanadoo.fr/francis.girault/birdy.htm use the GWS IPS with GWS gears, ball bearings and shafts ( http://www.aircraft-world.com/ ) .
Pinion M0,3 10T, gears 86/16T M0,3/0,4 and 66T M0,4 for 1/35,47 reduction, Etec 2S 250mAh and 56cm wing, but it's not perfect. The gearbox (30g with motor) is perhaps too heavy! I made a new wing at the present time.
Francis
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Old Oct 18, 2004, 05:45 PM
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London,England,UK
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Hi Francis

This bird could do with this motor
http://robotbirds.com/catalog/produc...roducts_id=164
Has made all GWS models a bit more exciting

Andy
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Old Oct 19, 2004, 07:16 AM
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Dijon. France
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Very interesting, Andy, thanks, but I prefer (the price of!) the brushed motors to brushless
Francis
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Old Oct 19, 2004, 12:57 PM
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This may not be the best place to post this question but I don't know where else to do it.........

Is the Mabuchi FF-030-PA/PK suitable for ornithopter/cui-cui ?
data-sheet on:
http://www.mabuchi-motor.co.jp/engli...uct/index.html

Requesting FrancisG, Korobelnik, and other experts to help.....Please

Raj.
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Old Oct 19, 2004, 03:25 PM
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Dijon. France
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Raj,
Good place, good question, but ...I do'nt know. This is a low price motor, try !!!
Francis
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Old Oct 19, 2004, 05:41 PM
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PARIS
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Raj,
I had no time to build a Cui-Cui.
Jean-Claude PESCE Designer of the Cui-Cui uses the DC 5-2-4.
You will find easily this DC 5-2-4 at Wess technik
http://www.wes-technik.de/English/motors.htm
If the characteristics of Mabuchi FF-030-PA / PK are identical or better then it will work also
Good courage
Robert Korobelnik
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Old Oct 20, 2004, 12:28 AM
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Robert,
Thanks for your guidence.
Best thing would be to use what is specified by the designer for sure success, OR
to fiddle around and actually try out another motor and see the results.

Francis,
Thanks for your guidence.
I like your approach to "Birdy" for keeping the cost low.
But I think that needs a lot of patience and hard work.

I also fell in love with the "parrot" and the "chicken" on your web site.
Extremely well finished, excellent expressions on the faces of these birds.

The Red frame - is it FRP ? or is it Carbon painted red ? or is it plywood painted red ?

Thanks,
Raj
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Old Oct 20, 2004, 04:47 AM
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Dijon. France
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It's very kind, Raj !
They are in painted epoxy (FR4) (printed electronic circuit without copper, I use some "perchlorure" (in french) of iron).
"But I think that needs a lot of patience and hard work." : no, no, Raj, I'm just an ordinary model maker !
Francis
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Old Oct 20, 2004, 07:03 AM
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"no, no, Raj, I'm just an ordinary model maker"

Very modest indeed.
Thanks Francis

Raj.
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Old Oct 20, 2004, 10:08 AM
Nathan Chronister
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I've built two models using the GWS motor and gears. One of them flies really well. The GWS gears do not allow enough reduction. It flies but it draws a lot of current.
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Old Oct 20, 2004, 10:54 AM
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Dijon. France
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Raj,
No false modesty: the work of Sean Kinkade (Alias Leonardo with the black glasses ) for the Skybird and the Parkhawk was fantastic! But to copy or to be inspired is less difficult... To make a gearbox is not very hard, the precision is required, yes, but it's not insurmountable. The rest of an orni is half kite, half aircraft. As says Nike: just do it!
Francis
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Old Oct 20, 2004, 12:47 PM
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Francis,
I Agree.

Friends,
Is there any online store for GWS IPS ?

Raj.
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Old Nov 15, 2004, 04:16 PM
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Ireland, Kildare, Leixlip
Joined May 2002
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Hi guys,

This thread has been dormant for a while so I'm not sure if anyone's still interested but:

Raj,
Many if not most of the online places do IPS drives. For example www.Aircraft-world.com.


Francis,

You list your bird as having 2s cells and being short on power. The standard IPS motor works far better on 3s. Efficiency is better and you can run it at 2A pretty reliably (possibly a bit higher if you have a heat sink). I know this would require gearing changes but you can double the power output for the weight of an additional cell. Also the motor is probably close to the brushless for efficiency when you use it like this.

Aidan
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