[NSRCA-discussion] Are these E-Meter readings OK

[Ron Van Putte]

Electric motors do have less maintenance.  What you are facing is  
repair.  <VBG>

Ron Van Putte

On Jul 29, 2007, at 9:21 AM, Stuart Chale wrote:

> Never mind I answered my own question and pulled it apart.  For those
> wondering, just pull off the front housing after taking off the  
> gear box and
> the rotor pulls out.  There is a brass bushing on the rear of the  
> shaft.
> That was the only extra piece on mine. (standard C50)
>
> The rotor was cracked.  Circumferential about 1/4" from the front  
> end.  The
> distal part of the rotor had slipped by about 1/8".
>
> And I thought electrics were supposed to be less maintenance :)
> Stuart
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
> andrewjesky at charter.net
> Sent: Saturday, July 28, 2007 9:14 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Are these E-Meter readings OK
>
> Stuart,
>
>> From the sounds of it I'm thinking that you have a slipped rotor or a
> demaged rotor. Normal amps should be in the upper 60's range. I  
> would advise
> you not to run the motor until you get it checked out as you have the
> possibility to burn up your batteries and speed control. Get a hold  
> of Kyle
> at hacker on monday and inform him of your problem to get thoughts.
> 480-726-7519
>
> Andrew Jesky
> Sent via BlackBerry by AT&T
>
> -----Original Message-----
> From: Stuart Chale <schale at optonline.net>
>
> Date: Sat, 28 Jul 2007 21:05:53
> To:"'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
> Subject: [NSRCA-discussion] Are these E-Meter readings OK
>
>
> I have been noticing increased Mah consumption on flights  
> recently.  I used
> to routinely use 3300 Mah or so for a Masters routine plus a couple of
> additional maneuvers.  Lately it seemed to be in the upper 3’s and  
> today I
> hit 4100 Mah.  The weather is a bit warmer but not real hot today.   
> Flights
> are about 9 min +/- 1 min.  In addition the packs seem to be getting
> hotter.  Today they were 140’s.  Motor was cool however, under 90  
> where I
> could get a reading.  These are Falcon F3A packs.  5000 Mah or so  
> running a
> Hacker C50 14 XL and APC 22x12, Jeti acro 90 controller.
>
> Today I attached the Hyperion E-Meter and obtained the following  
> readings at
> full throttle 75.8 amps, 2500 something watts, and 32 something  
> volts. (I
> lost the held readings)
> When new with the same size prop my numbers were 70.9 amps, 33.81  
> volts and
> 2399 watts.
>
> The plane still has plenty of power.  Are those numbers still in  
> the range
> of normal?  Is this increase of 5 amps at full throttle normal, too  
> high, or
> am I just flying at high throttle more than I was?
> Thanks,
> Stuart Chale _______________________________________________
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