This brings up an interesting tidbit I just discovered a couple years ago as I was selling some Bronze Barient 28ST winches, they were really magnetic! This was a new one on me, and after a little research, discovered that Manganese Bronze is magnetic! I am sure Edson would never have used any of that on their stuff, tho.
Bill Coleman C&C 39 animated_favicon1 From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Don Newman Sent: Wednesday, November 20, 2013 4:04 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List More EDSON More expensive compasses tend to use a mineral oil for greater dampening. The risk of getting a strong alternating magnetic field close to anything that is magnetized is that you could degauss it. But the field has to be strong and close so I suspect that 2M should be fine. We had a cover and base chromed before a Bermuda trip on a C&C 44 and had to degauss that because it was having a significant effect on the compass. BTW if you need to use a degausser (strong AC electromagnet) you have to slowly approach and move away from the object or you may end up with a stronger magnetic field than you started with. Don Newman C&C 44 On Wed, Nov 20, 2013 at 3:40 PM, dwight veinot <dwight...@gmail.com> wrote: My binnacle compass stays onboard all winter long...it is a Danforth compass...it has had a small bubble for many years but I live with that, besides I hardly ever pay much attention to it...I use the digital heading readings on my wheel pilot and my chartplotter whcih are mounted on the binnacle guard more regularly. I thought, however, that such compasses were filled with mineral spirits but from what has been posted lately some it appears an alcohol mix is used Dwight Veinot Alianna C&C 35 MKII Head of St. Margaret's Bay, NS On Wed, Nov 20, 2013 at 4:18 PM, Alex Giannelia <a...@airsensing.com> wrote: Having read the responses to the thread I started, I forgot to mention that I had my boat active from 2001 to 2006 and the compass worked wonderfully despite a small bubble which remained the same size throughout. That has now disappeared. What Rich says makes sense and knowing the winter temperatures in Halifax, if his or Dwight's survived multiple freeze thaw cycles, then it has no negative effect. I tend to favour Rich on the don't touch a perfectly well functioning accessory. I just found the whole design and manufacturing thing interesting to say the least and will proceed with my re-construction. I will then keep the list posted with respect to any detectible effects running a 10KW electric motor has about 2m away from said compass... Cheers! Alex Alex Giannelia a...@airsensing.com (416) 203-9858 <tel:%28416%29%20203-9858> www.airsensing.com
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