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A109power 90 size electric scale!
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Topic: A109power 90 size electric scale! (Read 12437 times)
Edwardp
Senior Member
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Location:
PeeYay!!
Re: A109power 90 size electric scale!
«
Reply #70 on:
June 27, 2007, 02:38:29 PM »
It worked well! Esc operating temperature after 9.5 mins flight dropped from 80ºC to 42.5ºC! Current draw at 12V for a cooling fan is 0.1A. I'll be adding more to the motor and batts in the future!
Here's more pics of the almost finished A109!
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First rule of heli flying >> When cold, do not switch off big fan on top!!
Edwardp
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PeeYay!!
Re: A109power 90 size electric scale!
«
Reply #71 on:
June 27, 2007, 02:43:30 PM »
Some more.... Enjoy!!
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First rule of heli flying >> When cold, do not switch off big fan on top!!
borneobear
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Posts: 2575
Location:
Klang, Selangor
Re: A109power 90 size electric scale!
«
Reply #72 on:
June 29, 2007, 03:13:47 PM »
Where is my sunglasses... your bird too shiney!! okay okay.. found it..
Here's a thread you might be interested in:
http://www.rcgroups.com/forums/showthread.php?t=705651
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I'll be OK, I'm leaving for my therapist now...
Edwardp
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PeeYay!!
Re: A109power 90 size electric scale!
«
Reply #73 on:
June 29, 2007, 03:50:28 PM »
Haha, make sure they're Raybans! Hidden UV danger!! ;Dm
Thanks for the link! It sort of confirms my belief that up to 50% additional weight on this bird really is nothing if you are not into hardcore 3D. Or for any other bird for that matter, that's 3D capable out of the box, which almost every heli is, nowadays!
Right now, I'm considering between these 2 brands to give me the 15-20min times. The Maxamps 6S 10000mah ( 1.4kg ) at abt RM1.3K or 2 of our very own 6S 3600mah VXR ( 1.12kg ) lipos in parallel at RM550 ea. How many Cs really doesn't matter much at this capacity range.
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First rule of heli flying >> When cold, do not switch off big fan on top!!
kukubird
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Kepada Semua MRC Malay Kawan
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Penang-BM_MK
Re: A109power 90 size electric scale!
«
Reply #74 on:
July 04, 2007, 08:33:45 PM »
i like the pic " gras2 " on green. very nice...
more pic......
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- E-Sky Lama V3 , - Raptor 50T<br />- Xcell 90 Stratus, - Trex 450se<br />- Angel 4x4 , Raptor90SE
maverick
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DREAM CHASER..
Location:
BORNEO AERO-HOBBY CENTER
Re: A109power 90 size electric scale!
«
Reply #75 on:
July 05, 2007, 09:35:29 AM »
i guess putting the batt parallel is a good choice as weight is at its limit.....
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FUTABA T10C
BOOMERANG SPRINT
JETCAT P80
Edwardp
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PeeYay!!
Re: A109power 90 size electric scale!
«
Reply #76 on:
July 05, 2007, 10:34:50 PM »
Not really so keen on parallel setups but I'm an advocate for bigger capacity batts and not many manufacturers are coming out with higher than 5000mah lipos!
The power excesses of most 3D machines these days has really given us 'normal' modellers, more power than is needed. So I figured stretching it and slapping on a big nice scale body shouldn't be too much for the stock powertrain to handle! So weight won't really be at the limit. Power to weight ratio is right there amongst other 60 sized scale helis!
«
Last Edit: July 05, 2007, 11:01:29 PM by Edwardp
»
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First rule of heli flying >> When cold, do not switch off big fan on top!!
maverick
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Re: A109power 90 size electric scale!
«
Reply #77 on:
July 06, 2007, 09:56:46 AM »
yes i agree with you abt the power to weight ratio thing. And u r not gonna 3D with the scale...
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FUTABA T10C
BOOMERANG SPRINT
JETCAT P80
JeffRC
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Ulu Langat, Selangor
Re: A109power 90 size electric scale!
«
Reply #78 on:
July 13, 2007, 10:51:08 AM »
Edward,
Congratulation ! Finally u done to fix 50 size
EP heli
to 90 size scale body,
very nice work man,
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Edwardp
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Re: A109power 90 size electric scale!
«
Reply #79 on:
July 13, 2007, 11:10:18 AM »
Hi Jeff, long time no see! Thanks! Recognise your ex Trex600 inside there??
So far the machine is doing very well!
Consistent 8.5mins flights everytime! The batts and motor does get a bit hot inside because of inadequate airflow. Have to add some more cooling fans later.
Any thoughts on going back to bigger electrics?
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First rule of heli flying >> When cold, do not switch off big fan on top!!
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