.... and NewbVetteGuy thoughtfully arranged in order by HP lossTuner wrote: ↑Wed May 12, 2021 1:51 pm Car Craft, May 2000, p50-51. Fan dyno test.
No fan 496hp
Black Magic fan, running 494hp
plastic fan 460hp
flex fan 466hp
hi-perf flex fan 476hp
6-blade rigid fan 449hp
non-thermal clutch fan 485hp
4-blade rigid fan 473hp
HD thermal clutch fan 476hp
thermal clutch fan 487hp
is the same Car Craft dyno test in the post BOOT made on the first pageNewbVetteGuy wrote: ↑Wed May 12, 2021 4:57 pm No fan 496hp
Black Magic fan, running 494hp
thermal clutch fan 487hp
non-thermal clutch fan 485hp
HD thermal clutch fan 476hp
hi-perf flex fan 476hp
4-blade rigid fan 473hp
flex fan 466hp
plastic fan 460hp
6-blade rigid fan 449hp
Reordered from least loss to greatest loss.
Good find.
Adam
viewtopic.php?p=893784#p893784
Other than difference in dynos and dyno operator techniques, such as dyno setting for control of specific acceleration rate and correction factors, what accounts for the large disparity between the two dyno tests in maximum HP loss of the factory solid six blade steel fan, 30 HP in the OP video and almost 50 HP in the magazine article?