Stus-List B&G Boat rotation on screen

Dennis C. captbuy at gmail.com
Wed Jul 3 16:45:26 EDT 2019


Got a compass app on your smart phone?  Got a street in your area that runs due north or east (true)?  

Line your phone up with the street and check the difference between its magnetic reading and the street. Note the difference. Now carry your phone to the boat and see what you have. 

Dennis C. 
Touché 35-1 #83
Mandeville, LA

Sent from my iPhone

> On Jul 3, 2019, at 7:18 AM, Matthew L. Wolford via CnC-List <cnc-list at cnc-list.com> wrote:
> 
> While we’re on this topic, what is the best way to determine the correct “reference” heading for adjusting compasses?  GPS?  Paper charts?
>  
> From: Bill Coleman via CnC-List
> Sent: Tuesday, July 02, 2019 10:39 PM
> To: cnc-list at cnc-list.com
> Cc: Bill Coleman
> Subject: Re: Stus-List B&G Boat rotation on screen
>  
> Sorry for the delay,
>  
> The compass has been installed for awhile, It did show on the Zeus3, and I did the turns. It was reporting within a couple degrees of my actual heading.  So, that seems like it is behaving. There is one data wire around it, I doubt if there is anything in that wire that would be affecting it. And like I said, it is giving an appropriate reading . . .
>  
> Regards,
>  
> Bill Coleman
>  
> From: CnC-List [mailto:cnc-list-bounces at cnc-list.com] On Behalf Of Dennis C. via CnC-List
> Sent: Thursday, June 27, 2019 8:45 PM
> To: CnClist
> Cc: Dennis C.
> Subject: Re: Stus-List B&G Boat rotation on screen
>  
> Is this a new occurrence?  Did you check the area around the fluxgate for metal and wires?
>  
> I take it the fluxgate has been installed a while?  If it was a new install I'd say check the orientation of the fluxgate.  Do you have a control instrument where you can adjust the compass, i'e. add/subtract 135?
>  
> Interesting issue.
>  
> Dennis C.
>  
> On Thu, Jun 27, 2019 at 6:48 PM Bill via CnC-List <cnc-list at cnc-list.com> wrote:
> Well, I did the turns, and it is still 135° off. I guess I will have to dig a Little deeper. Maybe It has something to do with how the boat is rotated.
>  
>  
>  
> On Jun 27, 2019 1:11 PM, Bill <coltrek at verizon.net> wrote:
> There is an RFC 35r rate compass installed. I'm assuming it would be a fluxgate, probably 2002 vintage.
> Good call.
> This has me thinking. I just brought it up on the screen and I can actually calibrate it . I couldn't figure out how in the world I would do that,  because they are so old and different. But it looks like when we get back to Port, I will do my turns. And see if something magical happens.
> 
> Bill
>  
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