The less friction the better but I don't have any numbers. I believe most cars have two sets per front wheel so that means 4x the friction savings but I'm thinking these are $$$$ bearings so the economics people are not going to like the numbers.
The losses are small on their own but would add up just like any ecomod.
I'm hoping the rollers can be replaced. I'll be doing the research this eve. or tomorrow. If bike wheels, computer fans and VW concept cars have them, I gotta have them.
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Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
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