depth finder/knot meter combo

Aug 18, 2015
17
Oday 272 Dana Point
I just purchased a 1987 272 Oday. It has a knot meter that I suspect is not working properly. It at the very least probably needs cleaned down below. But I was thinking of replacing it with a depth finder/knot meter combo and utilizing the current through hull of the knot meter. Can I do that and are they worth buying together? Any particular brand?
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
if you arent repairing what you already have and are purchasing new, purchase all parts together.
it may be that the current sender unit you have installed is bad, so buying a new head unit wont make it better.

i have a combo unit on my boat and awhile back the depth reading went wacky... i was told that i should replace the entire unit, but after doing some research i found that the transducer sales were fairly high from this particular manufacture, so i purchased a new transducer for $50 plus free shipping, and the problem was solved....

this doesnt mean you will have the same experience, but it does mean that you need to do some extensive research and make a reasonable purchase based on what you learn and what hope to achieve as the end result..
for some of us, its all about the money savings, and for others its all about the time and headache savings... and sometimes its just tough to decide which is the better route:D
 
Sep 16, 2014
171
Oday 272 Ventura
Audis is it the original Knotmeter? Next time your diver cleans your boat have him inspect the paddle wheel. Port side. Mine still works great. I would try and get that thing working because they work great. My Depth works also no issues yet.

I have a Lowrance Chartplotter 5 HDI Eliite that I paid 300.00 with AIS and it works great. I would highly recommend this unit. It comes with the combo depth and speed. I opted for just the Chartplotter.

I need the AIS because I am always out in the shipping lanes. Greatest thing for a boater.
 
Feb 26, 2011
1,440
Achilles SD-130 Alameda, CA
Next time your diver cleans your boat have him inspect the paddle wheel.
You shouldn't have to ask your diver to do this. Making sure the knotmeter spinner is unobstructed and moving freely should be part of every hull cleaning service.
 
Jan 27, 2008
3,086
ODay 35 Beaufort, NC
See if you have a plug so you can pull it out, put in the plug and then you can spin the wheel by hand to see if it is working and clean it. Check your connections, you could have a corroded connection.