Re: [Cal_Boats] Speed unit - Try GPS
Hi, I hate it when I go on the other tack and it feels good, but the knotmeter says I am going slower. Insight into this would be to suggest you check the speed on GPS. It is speed over ground, which is more accurate anyway, with current, waves, etc. When motoring up the St Clair River into the mouth of Lake Huron the current down is about 6 knots, the meter says I am going 6 and the GPS says I am going 3. Just another reason to use GPS.
Later, Nick 'Jade' Cal 9.2
From: "tilleytom" <ti… [at] yahoo.com>
Last year when "Lenochka" was hauled I replace the speed unit,
including the paddle-wheel sending unit, with new Standard Horizon
units. (Okay, next time I'll pick a company who it NOT getting out
of the instrumentation business.)
Now the speed unit works "intermittently" - usually not as I am
leaving the dock or for about the first 3-4 miles, then it start
working - most of the time. When I "troubleshoot" it - ie, the
sending unit out and in my hand - blowing on the paddlewheel, the
unit works with no problem. And I keep the boat pretty clean as
well. Also - when first "splashed" after the boat job, the unit
worked without problems.
So - when I installed the new thru-hull housing, after I read the
directions several times I kept coming to the part that said "if the
housing is not being installed on the centerline of the boat, angle
the housing slightly towards the bow of the boat to account for the
flow of water over the hull."
I am beginning the think that I may have pointed the unit a little
too much towards the bow and that water flow is pushing the paddle
wheel into too much side contact/friction and that is the reason is
does not work consistently.
Can anyone give me some validation or contradiction or other insight?
Thanks in advance.
TomT
1982 Cal 9.2 "Lenochka" Hull #52
San Mateo, CA
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