I gutted an RC car I found at a thrift store to make this set of flywheels. The wheels are 2.5in in diameter. The cool thing about big flywheels is that the linear velocity, or the speed of the outside of the wheel, is in direct proportion to the diameter. This means that all else being equal doubling the size of the flywheel will double the the velocity of the dart.
The big flywheels along with bigger motors and running it at 12-18v got ranges of around 100ft with some going way farther and some going way shorter. I stripped 2 gears for the full auto mech before I realized I need to just run it with a 9v and power the flys separately.
This could fire both streamlines or fathead darts.
