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Re: [Paparazzi-devel] BL Question

From: Matthew Currie
Subject: Re: [Paparazzi-devel] BL Question
Date: Wed, 12 Sep 2007 18:47:46 +0000


  Thank you for the info. I will check clearances when I get back to the shop, 
you may be on to something. I would like to spec the entire system for full 
throttle, yes. 

Matthew Currie
Mobile: 250-755-6998
Sent from a BlackBerry device    

-----Original Message-----
From: Martial Chateauvieux <address@hidden>

Date: Wed, 12 Sep 2007 20:21:48 
Subject: Re: [Paparazzi-devel] BL Question

Hi Mattew,

        The drop of last while flying is quite small. Don't count on that. 
There have 
been some articles in german magazine which measured only a couple of % using 
data loggers. Also you want to put the engine full throttle during the launch 
phase, don't you ?
        Is there anything braking the engine ? Are the cables too close from 
rotating part, or something of the kind ?

Le Mercredi 12 Septembre 2007 19:44, Matthew Currie a écrit :
> Group,
>   I purchased an AXI 2212/26 brushless outrunner motor, 3S1P 2100mAh 18C
> LiPo, Castle Creations Phoenix 35 ESC, APC 9x6 SF props, and a
> Wattmeter.  From what I have read everywhere, including group-member
> reports this should have put me @ around 12A the max current for the
> motor.  Instead, with the wattmeter attached I watch the current climb
> steadily up to 12A from 0-90% throttle then the last 10% of throttle I
> see the current skyrocket from 12-19A.  The motor (obviously) gets quite
> hot at this point even for brief 5 second runs.  Anyone know what is
> going on?  A flying buddy said "dont worry about it thats static current
> and will get better in the air" but I want to be 110% sure before I
> smoke a motor.  If it "gets better in the air", my argument would then
> be what is the point of a wattmeter? =)
> Regards,
> Matthew Currie

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