How are you recording speed with your data logger?

1. ## How are you recording speed with your data logger?

I'm looking into data loggers. My boat has a Norskog but we want to record it. Would you just use a pressure transducer and equate pressure to speed?
Also how are you mounting them?

Thanks.

2.

3. Originally Posted by Beal Motorsports
I'm looking into data loggers. My boat has a Norskog but we want to record it. Would you just use a pressure transducer and equate pressure to speed?
Also how are you mounting them?

Thanks.
The short answer yes. The old qwik data will record the data for you from a pressure transducer and give you a graph showing readings, I believe it takes data 500 times per second. This display with be shown in psi which can be easily converted into mph and is quite accurate. The equation for psi to mph is

PSI(square root) x 8.31 = MPH

Example

144 PSI (square root) x 8.31 = 99.72 MPH

The new qwik data II can do the conversion for you and the graph will show mph. Racepak is also this way that it will do the math for you.

A few of us are running a speedo pickup tube located on the skeg of the intake fins.

I have another boat that this was not possible to do since the intake was already in the boat. So I made a pickup tube hang off the back the boat.

Both of these have a small nylon tube running up to the transducer that is hooked up to the data logger.

4. Originally Posted by widowmaker
The short answer yes. The old qwik data will record the data for you from a pressure transducer and give you a graph showing readings, I believe it takes data 500 times per second. This display with be shown in psi which can be easily converted into mph and is quite accurate. The equation for psi to mph is

PSI(square root) x 8.31 = MPH

Example

144 PSI (square root) x 8.31 = 99.72 MPH

The new qwik data II can do the conversion for you and the graph will show mph. Racepak is also this way that it will do the math for you.

A few of us are running a speedo pickup tube located on the skeg of the intake fins.

I have another boat that this was not possible to do since the intake was already in the boat. So I made a pickup tube hang off the back the boat.

Both of these have a small nylon tube running up to the transducer that is hooked up to the data logger.
any pics of the pickup tube on the intake fins? this would beat drilling holes in the transom

5.

6. Originally Posted by Outlaw
any pics of the pickup tube on the intake fins? this would beat drilling holes in the transom
Its no easy task, better off running one off the transom.

7. Beal Motorsports.
Sent you a PM.
Duane HTP

8. Thanks guys.

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