[NSRCA-discussion] Pletty CC HV 85 issue

[dkrev at shaw.ca]

FWIW The times I have experienced screeching sounds with mine or someone else's setup, the cause eventually turned out to be a loose/worn connector into the esc from the motor. Replaced the connector and presto no further problems.  This might explain why a perfectly good setup might suddenly exhibiting these sounds. Worth checking before replacing an ESC.  
Sent from Dave's Crackberry

-----Original Message-----
From: Stuart Chale <schale at optonline.net>
Sender: nsrca-discussion-bounces at lists.nsrca.org
Date: Fri, 01 Oct 2010 01:12:10 
To: General pattern discussion<nsrca-discussion at lists.nsrca.org>
Reply-to: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Subject: Re: [NSRCA-discussion] Pletty CC HV 85 issue

No not a change in throttle input.  I remember clearly that the second 
time it happened that I wasn't really pushing it.  I agree that 
something must be going bad somewhere.  I have an extra CC HV85 that I 
an going to swap in tomorrow.  On the other hand I had an almost similar 
situation in Justin's (my son's) Angel 50 but the problem was 
reproducible with full throttle even on the ground.  Turned out that 
that was the motor (extreme flight).  I had a second setup both motor 
and ESC and swapped one piece then the other.

Thanks,
Stuart

On 9/30/2010 11:34 PM, Dave wrote:
> If this were a new setup, and this was the only problem, reducing the
> throttle response MIGHT help...and be a solid long term solution.
>
> My concern is that this is a proven, stable setup, that is now having
> problems.....something has changed, and that is what needs to be fixed (once
> it is found).   Electric setups that are solid and stable rarely (if ever)
> just change....is it possible you are advancing the throttle much faster and
> more aggressively than you have in the past?  Possibly while practicing the
> new Masters schedule?
>
> Dave
>
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Stuart Chale
> Sent: Thursday, September 30, 2010 11:28 PM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] Pletty CC HV 85 issue
>
> Yes the two times I heard it was on up lines advancing the throttle.  It
> did sound sort of like a timing issue.  Sort of like when you first
> start a motor and it doesn't turn properly.
>
> Stuart
>
> On 9/30/2010 9:08 PM, Atwood, Mark wrote:
>    
>> Did it occur while quickly advancing the throttle?  That sounds like the
>>      
> timing getting ahead of the motor.
>    
>>
>>
>> Mark Atwood
>> Paragon Consulting, Inc.  |  President
>> 5885 Landerbrook Drive Suite 130, Cleveland Ohio, 44124
>> Phone: 440.684.3101 x102  |  Fax: 440.684.3102
>> mark.atwood at paragon-inc.com  |  www.paragon-inc.com
>>
>>
>> -----Original Message-----
>> From: nsrca-discussion-bounces at lists.nsrca.org
>>      
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Stuart Chale
>    
>> Sent: Thursday, September 30, 2010 8:29 PM
>> To: General pattern discussion
>> Subject: [NSRCA-discussion] Pletty CC HV 85 issue
>>
>>
>> I am having an intermittent problem with my Plett Evo hooked up to a CC
>>      
> HV85
>    
>> I have run the combination all year without issue.  No recent ESC settings
>>      
> changes.
>    
>> On 2 occasions I have heard a "high pitched funny" sound from the motor
>>      
> with loss of power both times on the vertical line.  The first time I landed
> right away found no issues and flew the rest of the day without problems
> (thought it may have been a sound not from the plane)
>    
>> This weekend the same thing happened, lowered the throttle and re-advanced
>>      
> with normal power and I was able to fly 5 more flights without incident.
>    
>> Any ideas?
>>
>> Stuart C
>>
>>
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>>      
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>    

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