[C320-list] ST4000+ flux gate compass

[Warren Updike]

We had occasion to replace our original black wheel deal with an S1 wheel
pilot.  Just the wheel stuff.  All other components remain.  We still
experienced crazy Ivans.  I was thinking that maybe it has to do with the
start-up sequence, you know, how the wheel turns to port when first turned
on.  But when it happens while under way and on auto.  It never loses it's
course and recovers on it's own if I don't take over.  Like the Catalina
"list" I've never heard a plausible explanation.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"


-----Original Message-----
From: Len [mailto:aqua5len at gmail.com] 
Sent: Thursday, August 23, 2012 7:00 PM
To: C320-List at catalina320.com
Subject: Re: [C320-list] ST4000+ flux gate compass

Perhaps it's the ST 4000 - in general, I had crazy ivan wheel at times -had
same problem with 2nd 4000 - they never could find problem. Catalina finally
replaced with S1 system which worked OK for years - until I recently
switched to linear-drive below deck system which is amazing, and a folding
wheel.

Len Krane
AQUA5 #1070



On Thu, Aug 23, 2012 at 2:51 PM, Alan Goodman
<goodmanalanlee at hotmail.com>wrote:

>
> My flux gate compass is installed in my bilge compartment just forward 
> of the bildge pump compartment.  Swinging my compass produced a 
> reading of 15 which is the maximum value allowed before you must 
> relocate the flux gate (per the manual).  I have been experiencing 
> problems in that for certain headings the heading readout on the 
> control head does not indicate being off course until the course 
> deviation (detected by my steering compass) sometime exceeds 10 
> degrees resulting in crazy ivan wheel adjustments.  I am tuned 
> correctly per the forum and all mechanical components are OK.  My next 
> move is to relocate the flux gate.  What alternative locations are the 
> members using?  Under the swim platform would seem to be the easiest 
> installation location since I will avoid having to snake the cable.  
> Also since I have the shallow bilge, there in not much difference in 
> elevation between the two locations.  Thoughts?  Alan Hull 67 Holland 
> MI
>