Re: Anyone familiar with Denardis Engines?
To oversimplify, a racing or high performance engine needs to be run hard (higher rpm) to get the best out of it. Sure you can run it slow, but most of the power is made in a narrow(er) powerband. They generally don't make good "street" engines. You may make 9hp, but are you going to use it if the bike needs to be run wide open at 14,000 rpm all the time?
Not trying to discourage you from building your dream bike, but I knew a guy who built his "dream car"- a Trans Am with a fully built 400 cubic inch engine, and he drove it on the street from the place that installed the engine to his house, and realized it was not road worthy....he sold it a few weeks later.