Are you seeing significantly better performance from the SPX-5 vs the ST4000?

Steve Sharkey

> On Jan 16, 2014, at 1:01 PM, Michael Brown <m...@tkg.ca> wrote:
> 
> I upgraded from my ST4000 Autohelm to a SPX-5 with P70 control head last 
> summer.  The main reason
> was the ST4000 was challenged holding a tight heading in bigger wave / higher 
> wind days. Although
> suitable for my purposes it did not hold on course accurately either, which 
> at the time I did not realize was
> an advantage ;-)
> 
> As a side note, the SPX-5 core pack does work with the original ST4000 
> fluxgate compass, rudder sensor
> and wheel drive. I did purchase the kit with new pieces but thought I would 
> try the old stuff first before
> selling it so that I could claim it was working correctly and tested.
> 
> Michael Brown
> Windburn
> C&C 30-1
> 
> 
> 
> Message: 3 
> Date: Thu, 16 Jan 2014 11:07:55 -0500 
> From: "Della Barba, Joe" <joe.della.ba...@ssa.gov> 
> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> 
> Subject: Re: Stus-List Setting GPS Waypoints (long) 
> Message-ID: 
>     <1073606396712942aee54d9a960e45a718c9654...@hq-mb-07.ba.ad.ssa.gov> 
> Content-Type: text/plain; charset="utf-8" 
> 
> This is a good discussion. This has been a big issue in the flying world too. 
>  Airplanes now are EXACTLY on the charted airway, not just within a few miles 
> of it. This caused a head-on collision down in Brazil between a 737 and an 
> Embraer jet. A lot of restricted airspace violations come from setting the 
> destination waypoint and not bothering to look at what is between here and 
> there. 
> 
> I like to use OpenCPN which allows very easy point-and-click setting of 
> waypoints. I do not couple the autopilot. I like to stay in the loop and do 
> the cross checking and corrections myself. One other thing to be way of ? 
> especially on mapping GPSs with small screens, is a lot of things vanish when 
> you zoom out. The entire crew of a boat in the race to Ensenada (iirc?) died 
> when they plotted a course through an island and apparently they all fell 
> asleep. Their tracker showed a ruler straight line right into the island that 
> would have gone straight to the finish line. 
> 
> Joe Della Barba 
> Coquina 
> 
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