Pitot setup Query

[stingau]

G'day looking for guidance here as I am unsure precisely how a pitot system speedo works ..other than it is a pressure type sensor.

At present the boat that I have had/has the fishfinder transducer on the port side when looking from the rear and the pitot pickup on the starboard.

My new fisher finder recommends installing the transducer on the starboard side so I thought ..easy ill just swop them over put the new transducer where the pitot is and move the pitot to the port side.

There in lies my possible problem the tube from the pickup to the speedo gauge will not reach to the new position. Without knowing if the lenght of the connnecting tube is in some way calibrated to the reading can I either

a/ put a joiner in and lenghten the tube or
b/ replace the entire tubewith a longer one ( not preffered option as the tube is fixed in place and difficult the remove.

Any assistance from those who know he working principles of this unit would be greatly appreciated

[tenzing]

I cant see what difference the port side mountung would have on your fishfinder. I suspect it is just for a shorter cable run from yhr drivers side to rear starboard. If it works ok on the port I'd leave it alone, thats where mine is too. Otherwise forget the pitot which is not that reliable and use your speed over ground from the gps or speed thru water from your sounder ( if it has a paddle wheel)

Cheers Brendan

[stingau]

"I cant see what difference the port side mountung would have on your fishfinder"

Tenzing according to the installation guide it reccommends installing the transducer on the starboard side as this side will suffer less from prop turbulance and therefore giving a clearer picture.

Does anybody have any insight into this phenomonen.

[Angla]

The tube for the pitot can be extended without problem. The gauge is reading the pressure of air in the tube.

Chris

[Roughasguts]

I haven't got a speedo pitot on me boat, got the wheel on me fish finder and GPS.

Pitot tubes are only good for catching weed and making more spray, wouldn't worry about it much, it's not like there accurate.