Pressure type speedometers....

[KCLOST]

How accurate are they in general?<br /><br />And can the hose be cleaned thouroughly without taking off the lower unit... (high pressure air blown through line going to lower unit)? Will that do the job?

 

[DJ]

Re: Pressure type speedometers....

KCLOST,<br /><br />Not very and yes you can.

 

[rickdb1boat]

Re: Pressure type speedometers....

Not super accurate, but the tube can easily be cleaned with compressed air. They are good for a reference speed, but don't count on it to be dead on. A GPS (Even a cheap one) is a much better investment. They ARE dead on! Although, the one on my fishfinder with the paddlewheel pickup matches my GPS perfectly.

 

[Hooty]

Re: Pressure type speedometers....

My water pressure speedo is real close to the gps speed until it gets into the upper 10% of the scale.<br /><br />c/6<br />Hooty

 

[KCLOST]

Re: Pressure type speedometers....

Thanks everyone, <br /><br />I got ahold of a hand held GPS unit from a friend, just for the hell of it.... I'll do the cleaning on the boat line and take it out and compare (carefully).... I'll let you know what I find out....