HSK RACING NORWAY - DYNO 9R VID

[Dynamo^Joe]

ive known Geir for 10 years at HSK. He's a polaris guy. I been dabbling with polaris clutches for a while now and always wondered about the power the 9R had. So Geir textd me the latest videos.
Told me to run the clutching at 8450~8500 for long tracks holding long time full throttle. But tree rider might like 82~8300 rpms [cooler pipe]
Uses an EDDY CURRENT dyno.
look at that AFR number, wooo ! ! !

 

[Driver]

In real life experience both 9R and Boost run the best 8500rpm +-100rpm.

You can clutch it to rev 8300 but its just slow.

 

[underpressure]

Wow!!! I'm surprised by the rich afr for Na. Safe though. It was in the sweet spot around 12.3 but the ecm started throwing fuel at it to keep temps down. Engine is a runner!!