[C320-list] Calibrating/Aligning Raymarine ST50 Windvane
Elizabeth Schwartz
schwartz781 at optimum.net
Fri Aug 3 05:17:59 PDT 2018
Ahoy.....would you please send Dan Gerhard contact info?.....I have
issues with mine also, and plan rebuild this
winter.....Thanks....Joe...#245
On Thu, Jul 26, 2018 at 05:22 PM, Dave Hupe 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
>
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