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

[Verne Koester]

Stuart,
This seems to be a common problem on standard C-50's, particularly if 
they're not cooled properly. The comp version has a built-in fan that all 
but eliminates the problem and the ducting isn't nearly so critical.

Verne


----- Original Message ----- 
From: "Stuart Chale" <schale at optonline.net>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, July 29, 2007 10:21 AM
Subject: Re: [NSRCA-discussion] Are these E-Meter readings OK


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 _______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion


_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion