Home brewed cheap Dyno

[Ross Forgione]

This is not really a chasis dyno, but I have spoken to a few people who
have found a couple of sites on the Net talking about using "BIG" water
pumps with a gate valve  to create a "Back Pressure" type function. The
Idea is you get the pump, bolt a couple of strain gauages on its base,
connect it to the crank of the engine (create the necessary protection
barriers), close the gate valve to about 98% for  load and away you go. 

Once the engine runs, open throttle to max then SLOWLY open gate valve to
bring RPM up and take readings (Strain gauage output v RPM) at appropriate
points.

My questions.

1. Will this WORK ?
2. Is this how non electrical load dynos work ? 

Ross

At 06:33 15/05/97 -0700, you wrote:
>
>>So do i, and i also have a G-Curve.
>
>>The G-tech Pro only gives you the max HP reading and you don't now at what
>>rpm.
>
>>The G-Curve will give me all that i want but i have to set up a lot of
>>equipment in my car (camcorder frequency counter to read rpm, test rig to
>>mount the G-Curve and all the stuff then manually type in all the
>>information viewed on the TV from the camcorder.
>>// marchildon at usa.net                                            //
>>// Alain Marchildon                                              //
>---------------------------------------------------------------------
>One option with the G-curve is to just take a passenger instead and call
>out 
>discrete points, like every 500 rpm.
>
>Bill
>
>