ON-BOARD-DYNO Pictures
 

Here are some pictures of the setup from my cheapy digital camera (can't wait for Santa).

GUAGES 0-1000 HP and TQ. 270 degree sweep custom faced by Nordskod. Has a tattle tale feature with just wiring up a switch.

Control Module
 

This is the brain box. Dyno cable in, 12V in, guage output, reset zero button, bounce/delay adj knob. Mounts on transom. All the automotive weatherproof connectors. Also does the math to convert Tq into Hp.

Dyno Strain Guage
 

One view. This is the Stellings piece found in the extension box. Normally there is a 1 1/4" gap between the backside of the flange and the bearing carrier. An universal bolts to one side with a shaft which bolts to the engine and the other side is where the bravo shaft goes into. Stock there is the flange and shaft going into the bearing carrier. It is on this shaft that I mount the strain guage in that 1 1/4" gap.

Dyno Strain Guage
 

Side view. The strain guage and a few electronics are then sealed in the liguid black to harden and form the 'rotor' which is the donut like piece on the backside of the flange. It is fixed to the flange and rotates. It is the transmission of TQ thru the flange and shaft which is measures. Any shaft with TQ applied to it will twist slightly and this twist is what I measure and is propotional to TQ applied.

Dyno Strain Guage
 

Another view. Right next to the rotor is the 'stator' which is attached to the bearing carrier. It is stationary and it provides power to the rotor and them picks up the TQ signal from the rotor. A cable comes out of it and runs to the control box.

Bravo back side view
 

Where the drive shaft will go into.

Looks good! Now just to get one installed. To bad I don't run a stand off box and too far away. :(

digital gauges an option down the road?

Digital gauges sure. But I wanted to have white on white to match most every one's gauges out there. The resolution on my gauges is to about 10. Digital would have resolution to 0.01!

Way to go Marty! Since you are putting this on a Stellings piece have you spoken to them about this product?

Marty, that is a 10. Is the connection inductive?

I will want to talk to you about making one to put on the back of our transmissions.