[C320-list] Calibrating/Aligning Raymarine ST50 Windvane

[Chris Burti]

Curious, I'm pretty sure it is in the ST60 instructions, which is what we
have. I think mine was 180 out when I replaced the masthead unit, and it
may be that it resolved with the calibration, i just don't recall no, nut
it works correctly.

Chris Burti
Farmville, NC


On Fri, Jul 27, 2018 at 6:32 PM, hoopdtwo <hoopdtwo at yahoo.com> wrote:

> Chris-Heading directly into the wind makes perfect sense, but this
> definitely is NOT in the Raymarine manual instructions about this. I should
> have thought about doing that (duh). I can't check this out until next week
>
> I didn't redo any wiring .... only took down the whole masthead unit, sent
> it out to be rebuilt, then remounted it upon return.   Maybe there was a
> wire reversed internally in the masthead unit, but it seems like that can
> be corrected with the calibration procedure (hopefully).
> If my wind speed cups continue to stick/spin too slow,  Dan in Colorado
> who rebuilt it said to return it and he will fix it.
> Dave Hupe1994 Cat 320 "Mayan Sun (#32)Holland, MI
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
> -------- Original message --------From: Chris Burti <clburti at gmail.com>
> Date: 7/27/18  4:13 PM  (GMT-05:00) To: 320 <C320-List at catalina320.com>
> Subject: Re: [C320-list] Calibrating/Aligning Raymarine ST50 Windvane
> Dave,
> If i recall correctly, you may have missed  part of the instructions. after
> you linearize the instrument, you head directly into the wind and then
> adjust.
>
> if your instrument is 180 degrees out, I recommend rechecking your wiring
> first, that sounds like you have a couple wires reversed.
>
> Chris Burti
> Commitment, #867
> Farmville, NC
>
>
> On Thu, Jul 26, 2018 at 5:22 PM, Dave Hupe <hoopdtwo at yahoo.com> wrote:
>
> > I recently had my masthead wind instruments unit rebuilt (by Dan Gerhardt
> > in Durango, CO), mainly because my wind anemometer cups did not spin at
> all
> > last year when I bought the boat.  I elected to also have the wind
> > direction part rebuilt while the unit was off the boat.
> > I just reinstalled the masthead unit.  The anemometer cups stop in light
> > wind and/or are not spinning as freely/fast as I think they should
> > (especially comparing them to the same setup on the 320 in the slip next
> to
> > mine).  I'm hoping the cups will spin more freely after they have a
> chance
> > to continue to spin in the wind (new bearings loosen up?) .
> > The wind direction part is working (it did before, but hung up
> > occasionally), but now my wind instrument panel shows the wind is about
> 180
> > degrees off (when the wind is blowing at the bow, the indicator suggests
> it
> > is instead blowing toward the stern).
> > I looked a my manual and it says for calibration to first "linearise" the
> > direction transducer by powering up the unit and driving the boat in 2
> > complete circles. Then it talks about pushing down the left-hand
> instrument
> > panel CAL button for 2 seconds until "CO" is displayed, then pushing the
> > rocker button (is this the right button?) as many times as needed to move
> > the pointer to the correct wind angle.
> > I understand steering the boat in circles, but the second part of the
> > procedure confuses me (when and what is the correct wind angle?).  The
> only
> > way this seems straightforward to me is to physically have someone on the
> > mast hold the windvane still as if it were blowing directly at the bow,
> > then push the CAL button to appropriately correct the pointer.  However,
> > this doesn't seem like what the manual directions indicate you need to
> do.
> > Has anyone been through this with old instruments on an early (1994,
> etc.)
> > 320?  Can you explain this better for me?
> > Dave Hupe
> > 1994 Cat 320 "Mayan Sun" (#32)
> > Holland, MI
> >
>