Water Brake?

[Clare Snyder]

Dave Williams wrote:
> 
> -> but hot-rod magazines offer on-car dyno's which are torque load cells
> -> which are mounted on prop-shafts which could easily adapted to your
> 
>  Superflow uses a tension-type load cell and the absorber is free to
> rotate against its resistance.  I've seen load cells in that range for
> $150 or so.
> 
>  Clayton uses a calibrated spring with a linear potentiometer; the
> absorber is also free to rotate.
> 
>  Electric dynos are supposed to tell by looking at the eddy current, or
> something.  I've never found out a whole lot about those.
> 
>  The inline torque load cells you mentioned are probably the most
> expensive way, but I can't think of anything else offhand that'd work
> with a prop dyno.

If the prop dyno is used on a test stand, it is a simple matter ro use a
reaction arm (like a torque wrench) with the engine mount able to rotate
about the prop axis.The simple way to measure the torque is with a 1 sq
in air or hydraulic cyl on a 12" reaction arm with a pressure gauge
calibrated in PSI. The guage reading will be ft/lb torque. Then all you
need is a tach and a calculator. 
> ====dave.williams at chaos.lrk.ar.us========================DoD#978=======
>   can you help me...help me get out of this place?...slow sedation...
> ain't my style, ain't my pace...giving me a number...NINE, SEVEN, EIGHT
> ==5.0 RX7 -> Tyrannosaurus RX! == SAE '82 == Denizens of Doom M/C '92==
> 

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