[C320-list] Calibrating/Aligning Raymarine ST50 Windvane

[Elizabeth Schwartz]

thank you!!


On Fri, Aug 03, 2018 at 04:17 PM, Allan S Field wrote:

> Dan Gerhardt
> 35 Michael Way
> Durango, CO 81301
> C250 at mydurango.net
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On 
> Behalf Of Elizabeth Schwartz
> Sent: Friday, August 3, 2018 8:18 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Calibrating/Aligning Raymarine ST50 Windvane
>
> 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
>>
>
>