Account Options

  1. Sign in
The old Google Groups will be going away soon, but your browser is incompatible with the new version.
Google Groups Home
« Groups Home
uavdevboard
Home
+ new post
About this group
Join this group
Being careful which Electronic Speed Controller (ESC) to use
Options
There are currently too many topics in this group that display first. To make this topic appear first, remove this option from another topic.
There was an error processing your request. Please try again.
flag
   2 messages - Collapse all  -  Translate all to Translated (View all originals)
The group you are posting to is a Usenet group. Messages posted to this group will make your email address visible to anyone on the Internet.
Your reply message has not been sent.
Your post was successful
 
From:
To:
Cc:
Followup To:
Add Cc | Add Followup-to | Edit Subject
Subject:
Validation:
For verification purposes please type the characters you see in the picture below or the numbers you hear by clicking the accessibility icon. Listen and type the numbers you hear
 
Peter Hollands  
View profile  
 More options Nov 2 2012, 3:04 pm
From: Peter Hollands <peter.holla...@gmail.com>
Date: Fri, 2 Nov 2012 19:04:48 +0000
Local: Fri, Nov 2 2012 3:04 pm
Subject: Being careful which Electronic Speed Controller (ESC) to use
Print | Individual message | Show original | Report this message | Find messages by this author

Folks

I decided to upgrade the brushless motor and ESC on my alpha axion
139<https://plus.google.com/u/0/photos/116649305486556508497/albums/56669...>.
But I found that the new ESC had some problems.

I initially bought a 30A ESC from 4-Max Purple
Power<http://www.4-max.co.uk/pp-tesc30au.htm>
and this motor with a 220W power. <http://www.4-max.co.uk/ppi-2837.htm>

I fitted this, with an upraded 3S battery to my spare Alpha Axion, but soon
noticed a problem.

The ESC has a safety feature that means that if the prop ever stops
spinning with the throttle up, then it shuts down the ESC.
If I slowly went from no throttle on the transmiter and increased the
throttle slowly, sometime the prop would start, then stop on it's own. This
was true only at low revs.
(it was in tickover), and then the ESC would shut down. I was worried that
the autopilot might do this during autonomous flight,
but not know to reset the ESC by going to minimum throttle and then moving
back up to a significant amount of throttle.

Also the increase in performance of my plane was disappointing. I tried the
ESC on both high and low frequency settings.

So I dug out a spare Castle Creations 36A Thunderbird
ESC.<http://www.castlecreations.com/products/thunderbirds.html>(click
their Tab on their website for the 36).  I rewired that into the
same plane with the same prop (6x4 pusher).
Immediately the starting thrust of the going from no throtlle and a static
prop to slightly incrased throttle at tick-over and a moving prop, was much
much better.
There was no problem with any safety features.

And when I flew the plane, it was transformed. The climb rate was what I
hoped for.

So the moral of the story seems to be, people should be careful about the
make of ESC that they fit to their planes. They have vastly different
characteristics, and some are just not suitable for use with an autopilot.
Interested in any comments and experience on this topic ...

Best wishes, Pete


 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
markw  
View profile  
 More options Nov 2 2012, 5:33 pm
From: markw <kd0...@gmail.com>
Date: Fri, 2 Nov 2012 14:33:41 -0700 (PDT)
Local: Fri, Nov 2 2012 5:33 pm
Subject: Re: Being careful which Electronic Speed Controller (ESC) to use
Print | Individual message | Show original | Report this message | Find messages by this author

Hi Pete,

Could the problem ESC be defective? Perhaps a bad or weak output phase is
the problem.

regards,
--Mark


 
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
End of messages
« Back to Discussions « Newer topic     Older topic »

Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
©2013 Google