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pq2
04-27-2006, 12:48 PM
Im trying to calibrate the speedos of my boat while i can get a perfect pass, does some one has the times for different speeds on the course, is there any table that i can use to adjust them??? thanks again for your help.

rodltg2
04-27-2006, 01:00 PM
www.usawaterski.com

they have a table.

pq2
04-27-2006, 01:00 PM
thanks rod

DanC
04-27-2006, 01:01 PM
http://accufloat.com/slalomtimes.htm

rodltg2
04-27-2006, 01:01 PM
that or look at the dash on a 80's mastercraft

Ric
04-27-2006, 01:18 PM
when I was a kid I always thought that was soooo cool that the MC had the slalom times lithographed on the dashpanel

east tx skier
04-27-2006, 01:31 PM
I'm not a kid anymore, but I still think that's pretty cool.

rodltg2
04-27-2006, 01:53 PM
when I was a kid I always thought that was soooo cool that the MC had the slalom times lithographed on the dashpanel

alot of boats did then, i know the centurions did too

pq2
04-27-2006, 01:59 PM
any tips for an easier calibration????

east tx skier
04-27-2006, 02:02 PM
Perfect pass and magnets.

Ric
04-27-2006, 02:12 PM
I'm not a kid anymore, but I still think that's pretty cool.
oh me too, I just never see them anymore

BuoyChaser
04-27-2006, 02:23 PM
email Max at http://www.skiertoskier.com for a free timing card, biz card format that is laminated, NICE!!!

wakesport
04-27-2006, 03:05 PM
From the starting bouys to the finish is 259 meters. To calculate the time between these bouys in seconds, use the following formula:

(77,700,000÷134112)÷mph

So, for example if your speed is 36 mph your time in seconds should be:

(77,700,000÷134112)÷36 = 16.0935

If your time between bouys is less than this you are going faster than 36 mph.

you can use this formula to calculate how fast you are going between bouys:

(77,700,000÷134112)÷Time = Speed

So, for example if it takes you 18 seconds to get through the course (259 meters) then your average speed was:

(77,700,000÷134112)÷18 = 32.1870 mph

88 PS190
04-27-2006, 03:07 PM
are the times from gate to gate?

wakesport
04-27-2006, 03:13 PM
are the times from gate to gate?

Yes, from entrance gate to exit gate. This distance is supposed to be 259 meters.

east tx skier
04-27-2006, 03:25 PM
Don't forget that there is an acceptable level of variance from the "actual time," which varies depending on your speed as far as I can tell. Of course, the variance is determined by segment. So hit the split button on the stopwatch at the 3 ball boat guide.

wakesport
04-27-2006, 03:39 PM
Don't forget that there is an acceptable level of variance from the "actual time," which varies depending on your speed as far as I can tell. Of course, the variance is determined by segment. So hit the split button on the stopwatch at the 3 ball boat guide.

To get the split time at ball 3 just multiply the formula by 109 and divide by 259.

So, at 36 mph it should take you:

77,700,000÷134112 X 109÷259÷36 = 6.7729 seconds

east tx skier
04-27-2006, 03:49 PM
That's true for the first segment.



At 36 mph, First segment actual is 6.77 (acceptable range 6.67--6.86 seconds). Second segment actual is 9.31 (acceptable range is 9.18--9.44 seconds). Total course time (useful for calibrating speedos) is 16.08 actual.

Ric
04-27-2006, 03:56 PM
my head just exploded! pp just says OK or not at the end of the pass and Ric is happy

east tx skier
04-27-2006, 03:58 PM
my head just exploded! pp just says OK or not at the end of the pass and Ric is happy

Hee hee, I was told there would be no math on this test. :steering:

Exactly. But even so, most digital stopwatches have a split/lap function. So just hit that button at the 3 ball and stop at the end gates and you can see the splits.

With PP, the heavy hitters still want to know the splits (fast times, slow times, SSB adjust, etc). I'm not even close to that point yet.