What is this knob for?

chevydude19852003 · Newbie Joined: 05 Apr 2005 Posts: 41 City: Fort Seward

Im a new boat owner i bought it used and i have no idea what this knob is for i thought it was a bass knob but i dont think so. Anybody know?

Talltigeguy · Newbie Joined: 06 Jun 2004 Posts: 48 City: St. George

Chevydude,

I don't know what kind of boat that is, but I think that is your speedo knob. It calibrates the spedometer. Next time you are out on the water, go about 25 MPH and move the knob up and down and see if the spedometer changes speeds. You can adjust it to match the speed on a GPS unit.

I tried to kill my wife once because I didn't know what that was. I tried to get the speed up for slaloming, but had to have it throttle wide open just to get to 30 MPH. It felt a little fast to me, but whatever. I also couldn't figure out why the boat couldn't go faster. This was my first time out. She crashed pretty bad, and it hurt.

Eventually I figured out the speedo control and realized that she was slaloming at 40 MPH or better! Embarassed

vawakemonster · Posted: Apr 08, 2005 6:35 pm Post subject:

chevydude19852003, what kinda boat i like the looks of it

882001 · Posted: Apr 08, 2005 7:07 pm Post subject:

im gonna go with centurion since not one, but twoof the guages say centurion

Ruune · Posted: Apr 08, 2005 7:12 pm Post subject:

thats for the ejection seat.

D-GOOSE · Addict Joined: 09 Aug 2004 Posts: 750 City: Antelope

882001, Good call Idea

Bruky · Guest

I'd imagine it's a remote gain control.

chevydude19852003 · Newbie Joined: 05 Apr 2005 Posts: 41 City: Fort Seward

Thanks, yeah its a centurion Hurricane 2002

Kyle95 · Outlaw Joined: 03 Jan 2004 Posts: 108 City: Appleton

It does look like a gain control from a rockford amp...... If you are the second owner the first owner most likely had a system. But it has also been proven that I have been completly full of stuff sometimes.

K-dub · Ladies Man Joined: 12 Jan 2003 Posts: 14760

wesgardner · Posted: Apr 11, 2005 3:53 am Post subject:

chevydude19852003,

Oh my god, you didn't touch that knob did you.... Shocked

Wes

AndyDeeJay · Outlaw Joined: 20 Jul 2004 Posts: 239 City: Belfast

It's the bling factor knob - set to maximum all the time!

oshensurfer · Posted: Apr 11, 2005 8:18 am Post subject:

I have the same boat. Talltigeguy is right. It's a speedo calibration knob for the analog speedometer.

You'll need a handheld GPS unit or another boat on a calm day to set the speedo since it looks like you don't have a digital speedo or Perfect Pass to calibrate it.

I have PP and I don't even look at the analog speedo anymore other than to compare readings..

chevydude19852003 · Newbie Joined: 05 Apr 2005 Posts: 41 City: Fort Seward

oshensurfer this isnt actually my boat i did not have this angle of it so i got a similiar one off the internet. on the left side of the dash i have a digital readout with speed and tons of other stuff can i use that to calibrate my speedo?

Loungin · Newbie Joined: 08 Apr 2005 Posts: 26 City: Chico

That damn knob!!!! when I first got my older Centurion, i turned it up and down over and over to see what it did...couldn't figure it out for a couple months. Then one time i did it while i was driving, and DAMN!!! if it was ever calibrated correctly, it ain't no more! Never got around to using the GPS before selling it. If i remember right, there is about a +- 4mph movement in it at higher speeds.

Willy · Outlaw Joined: 01 Feb 2004 Posts: 159 City: Montreal

Don't be a nerd. Calibrate your speedo with a stopwatch, not a GPS!

Just drive through a slalom course, and time what it takes to get between the entry and exit gates. You can probably find the correct (reglementary) times for different speeds on some waterski association webstite or something.

Worth doing, and beats any handheld GPS.

Willy

chavez · RIP MHL 04/25/1958 - 01/11/2006

Willy,

1. not all of us have access to a slalom course.

2. your method forces the assumption that the slalom course has been properly set.

3. GPS is pretty darn accurate, and plenty so for most wakeboarder's purposes as it is not subject to problems such as river currents.

Now, if we were hardcore slalom people, I would whole-heartedly agree that your method is best. Cool

Styk33 · Posted: Apr 13, 2005 11:29 am Post subject:

If it is not a paddle wheel then the speed is about as accurate as me sticking my finger in the wind. When I used my GPS to calibrate my speedo before I got PP, I would set it, then within a couple pulls it would be off again.

The PP paddle wheels seems to do a great job. It is within .1 after a 150 hours of use (~1 year).

AndyDeeJay · Outlaw Joined: 20 Jul 2004 Posts: 239 City: Belfast

are paddle wheels accurate? I know the Peeto pressure tubes are always clogging with debris.

wesgardner · Posted: Apr 14, 2005 4:32 am Post subject:

Hey AndyDeeJay,

Yes, the paddle wheel is quite accurate -can be to .00 of a knot, used in racing sailboats all the time where .00 of a knot is quite important! The pressure tube thing is notoriously silly!

Wes