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[LW11] Tacktick speed problem
08-19-19, 04:00 PM (This post was last modified: 08-22-19 04:04 AM by Louise - Raymarine - Moderator.)
Post: #1
[LW11] Tacktick speed problem
I have a Tacktick system consisting of Airmar B44 Through hull transmitter, Tacktick T121 and mn100 display. It has been running smoothly for many years but suddenly the speed went down to zero. I reckoned it was weed or similar so I hoped it would disappear by itself, and after some more sailing the display started to pick up speed again. The figures were fluctuating for a while but were climbing up to the assumed correct speed, so I reckoned the weeds were gone. Then it was stable and OK for another 100nm when it suddenly went down to 0knots again, but after a while it went through the same pattern with fluctuations until stable. Then a period of correct speed until it was down to 0kn again. This time I was suspicious and inspected the paddlewheel, and the paddlewheel was moving freely. Fortunately I had a spare transducer insert onboard but that did not make any difference. I inspected cabling, etc and found nothing irregular. The display showed 0kn for the next 150nm, when suddenly the display started fluctuating again until correct speed. Anyone having an idea of what is going on?
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09-05-19, 05:40 AM
Post: #2
RE: [LW11] Tacktick speed problem
Dear larsgrubbe,

Thank you for your post. You can perform a test on your speed log transducer with a voltmeter, this information is available here.

If these prove to be ok I recommend sending your hull transmittor in for testing and repair at our service centre, this can be booked in online here.

Many Thanks
Louise
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