This is a Dyno at the flywheel of the Hartley 3.0L V8 as used in the Ariel Atom V8

 

Power Comparison

Originally, the new Ariel Atom V8 was called the "Ariel Atom 500". They have back pedalled on this now calling it the Ariel Atom V8. The 3.0L Hartley engine produces a maximum power of 426BHP at 9500RPM at the flywheel (which is still very good for a NA. 3.0L motor.) The gearbox losses are approx 2% per ratio (2% for the gear and 2% for the CWP) or 4% total. The CV's loose approx 1% per 3 degrees of angle per CV joint.

A reasonable drive train loss estimation would be approx 6 to 8%. This gives the Ariel Atom's V8 395 to 400WHP. Compare this to the Jaydee Atom 600 fitted with a K20 supercharged Honda motor producing 540WHP.

Weight Comparison

The first Atom V8 weight was 1250lbs or 568Klgs. The 10" longer wheelbase and stiffer chassis Jaydee Atom 600 is heavier at 620Klgs. I would expect the difference to be less due as the Atom V8 weighted did not have wings, the side mounted coolers, and a roll bar.

(Note: The Jaydee Quantum 600 will be considerable lighter due to the use of aerospace materials.)

Handling Comparison

The 10" longer wheelbase and stiffer chassis has been developed as a result of extensive study of the chassis dynamics. (see more infomation under the data logging section)

 

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Strain guages were also very valuable in designing the chassis. Here is old datalog from the std Atom 2 chassis with approx 400hp. Look at the front wheel weights under acceleration.....The short wheelbase, weight distribution, and suspension geometry results in under 30klg on each front wheel much of the time. Massive understeer is the result.