Quote:
Originally Posted by Turdinator
There is discussion on this in other threads. But basically on a dyno that gives a reading whilst accelerating an engine will show a gain. But the effect will differ depending on what gear you are in. Redusing the rotating mass is like reducing the cars weight but multiplied by the gearing eg g/box ratio x final drive ratio x rolling diameter etc. Therefore in theory 1st gear will see a greater gain from a light flywheel than 5th gear will. Similarly a lightweight carbon drive shaft will be like lightening the car multiplied by the final drive ratio as its in between the g/box and diff so the reduction is more constant.
If you were to dyno an engine at a fixed rpm before and after a flywheel change the power would read the same. A dyno that accelerates through the RPM range will show a gain depending on the gear you dyno it in. People seem to dyno these cars in 4th gear for some reason where traditionally people use whichever gear is 1:1 which is 5th on these.
(sorry that turned into bit of a novel, still not sure i explained myself well  ) |
Nope u did a good job and get wat u mean now.