Free desktop dyno 2000 download..... get it free:)

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Well, that program is worth exactly what it cost. I loaded it with real head flow data and cam events from a Harley motor I did for a friend of mine last year. I have real carb flow numbers and rear whell dyno numbers. I designed the engine on Performance Trends' Engine Analyzer Pro - it predicted 135 HP at the crank. A DynoJet dyno measured 121 HP corrected at the wheel. That's an 11% loss through the drive train - very normal. The Desktop Dyno program shows less than 100 HP.

The induction flow element seems to be the weak link. Who has flow numbers at 1.5 In Hg? No matter what I put in this entry, the result never went over 100 HP.

If you want to get serious about engine modeling, go to: http://www.performancetrends.com/
 
Roger Ramjet said:
Well, that program is worth exactly what it cost. I loaded it with real head flow data and cam events from a Harley motor I did for a friend of mine last year. I have real carb flow numbers and rear whell dyno numbers. I designed the engine on Performance Trends' Engine Analyzer Pro - it predicted 135 HP at the crank. A DynoJet dyno measured 121 HP corrected at the wheel. That's an 11% loss through the drive train - very normal. The Desktop Dyno program shows less than 100 HP.

The induction flow element seems to be the weak link. Who has flow numbers at 1.5 In Hg? No matter what I put in this entry, the result never went over 100 HP.

If you want to get serious about engine modeling, go to: http://www.performancetrends.com/

thanks for the link, i will have to check that out :nice: