Dual-speed supercharger for the H3 Anyone who has driven a Hummer H3 has commented on the lack of power. Even with a manual transmission, the acceleration leaves a lot to be desired. In an effort to resolve this concern, European automotive technology company, Antonov, will be showing its innovative 2-speed supercharger drive system at the Specialty Equipment Market Association (SEMA) show next week in Las Vegas.
After mounting the unit on the power steering pump bracket of the I5, the supercharger is overdriven at 1.36 to 1 from off-idle to about 4200 rpm under hard acceleration, then mechanically steps down to a 1 to 1 ratio at higher RPM's. The higher speed of the supercharger impellor increases power and torque to the rear wheels by an impressive 58 percent at lower engine speeds changing the personality of the H3 dramatically.
Do you have a link to who is selling it? I've always been told that a roots supercharger is better for 4 wheeling apps since it makes its power at lower rpm's. This one is centrifugal, correct? It sounds like this one makes it's power at lower rpm's. Is that correct? And what are your thoughts about the roots being better for 4 wheeling? Thanks!
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