Outboard Mastercraft PS 190

[oldjeep]

Pretty cool, and have a look at the floor mounted ski racks

 

MAstercraft

 

[foxriverat]

I would think thats a barefoot 200 not prostar 190

[foxriverat]

I guess it is prostar 190 I should have read his whole ad

[wtrskior]

its actually a prostar 200. same hull as the 190 direct drive of the era with a 200hp O/B instead. cool boats!

[Texas6]

Bet you don't see a heck of a lot out of that dash mounted rear view mirror with all that motor in the way....bet that thing runs though

[escmanaze]

I enjoy the explanation as to why there are two speedos. I could learn a thing or two :)

[ntx]

Back in the day, they used them to pull jump at some of the Pro stops.

[Orlando76]

Like @escmanaze brought up, am I reading that right? How can you pull two skiers at different speeds?

[Wish]

Science....

[BraceMaker]

@Orlando76

 

Speed now is so easy/bullet proof you forget the struggle.

 

Boat speed is not instantaneous - it is slower/faster depending on load. So you look at an average speed over course or divide it down to time at each ball in the course.

 

So before GPS you had to use a stopwatch - then magnets were hung beneath the ball and would trigger timers in perfect pass.

 

Either way - prior to that calibration of a speedometer was accomplished by driving through the course at speed and timing it. You then would twiddle the knob to set the gauge accurately. However it was really only accurate at one specific speed. So calibrate to 17mph and it's off at 34 or 36.

 

In a river up and down current measure slow/fast.

 

Lots of ways to use it. You could set one to 36 and one to 34 or to 17 for trick or 42 for barefoot. You could set both to the same speed if you have seaweed which clogs your pitot tubes. Or you could do one up/downstream.

 

ESC I think was blowing smoke.

[Orlando76]

@BraceMaker Im all too familiar with that. Guess I'm reading the ad wrong.

[BraceMaker]

Ha. Good.

 

In that case I think it's just a poorly phrased way to say timing two skiers on separate gauges. Also he says he needs bags - which I bet he means ballast tubes.

[bassfooter]

@BraceMaker why wouldn't a pressure-based or paddlewheel speedometer give accurate readings in a current? Don't those systems measure speed over the water?

[BraceMaker]

Sure they'll tell you how fast the boat is going vs the water.

 

"8.05 Boat Speeds

All speeds are “speeds over the bottom”; compensate in all cases where a current

exists. The boat path in all events is intended to be a straight line, run at a constant

speed. Variation in speed during any pass may not exceed ± .8 kph (.5 mph), except

during the second segment in the jump course when using the optional faster second

segment option. In the Slalom and Jumping events, the recorded times through the

timing segments must also be within the applicable tolerances. (See Rules 9.06,

9.17, 10.06, 10.17, and 11.06, and the Timing Tolerances Tables.)"

[bassfooter]

Oh...you were thinking relative to a slalom course. I was just thinking in terms of open water, like free skiing. Sorry....