Randomness Matt on 21 Jul 2005 06:18 pm
Whoops. A simple dyno goes bad..
Most car nuts have either dyno’d their car, or have witnessed another car being tested (for you non car nuts, read the rest of this post for an explanation of what a dyno test is). Ever wonder what would happen if one of those straps broke? Check out this video (right click and do ‘save as’), and read more about it here. The cause was supposedly a combination of extreme power (1200hp with nitrous, 900hp without!) and the exhaust gas being directed right at the straps.
A dyno test is where your car is strapped in place, its wheels over a large roller – the car accelerates until it’s at around 2000 rpm in the gear closest to 1:1 ratio – which means your wheel speed may be really high, 80-100mph. At that point, the operator activates the dyno (increases the load) and the throttle is simultaneously depressed to the floor. The car accelerates to redline (or wherever you wish to stop the test), everything spins to a stop slowly, and the resulting data shows how much horsepower and torque is being transmitted to the wheels at a given engine rpm. For even more info, check out the website of one of the most well known dyno manufacturers, Dynojet.
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