I need some feedback on my flywheel conundrum.
My engine (turbo YB Cosworth) is fitted with a flywheel weighing in at 8.6Kg. A lightweight replacement can be down to approx 4Kg. Although that is a lot of rotating mass removed I am concerned about the effect on standing starts. A heavy flywheel helps to stop the engine bogging down in a normal car that weighs over a tonne. However, mine will weigh almost half that and with 450lb/ft I contend that a heavy flywheel isn't so important on my vehicle and the saving in rotational mass is significant. In sheer weight alone it is equivalent to 4bhp/tonne.
Any racers out there got any thoughts or advice?
My engine (turbo YB Cosworth) is fitted with a flywheel weighing in at 8.6Kg. A lightweight replacement can be down to approx 4Kg. Although that is a lot of rotating mass removed I am concerned about the effect on standing starts. A heavy flywheel helps to stop the engine bogging down in a normal car that weighs over a tonne. However, mine will weigh almost half that and with 450lb/ft I contend that a heavy flywheel isn't so important on my vehicle and the saving in rotational mass is significant. In sheer weight alone it is equivalent to 4bhp/tonne.
Any racers out there got any thoughts or advice?