AS OF THE CLUB MEETING 9/25 – the members present voted Aye/for and David approved the use of the Slot.IT inline crown gears.
MANDATORY: Slot.IT crowns can only match the tooth-count(z-number) offered by NSR;
24, 25, 27
RPMs: using the stock 10z pinion: at 11v: 27/10= 7265 25/10 = 7847 24/10 = 8174
RECOMENDED: Brass/bronze vs. Alloy/aluminum // brass seems to wear less.
Important Note: NSR motors are setup to turn Counter-Clockwise (lefty) vs. Slot.ITs which turn CW/righty – looking at the motor from the pinion end. If you install a crown with the plastic gear bed on the right (looking at the pinion end) the car will run Backwards, and you’ll notice a slightly smaller/tighter open area in the gear box. DO NOT ‘fix’ the problem by swapping motor wires – you are now messing up the Advance (deg.) the motor has built into the Armature. You are also now running the armature backwards (from any break-in from the factory or when you prepp’ed it).
Some 4-40 grub screws are a little too long in the arbor/collar of the gear and can hit the motor or pinion.
/** To Series Manager Dave Cass and ASCC members; my sincere thanks for accepting the proposal to run Slot.it crown gears as an option to the NSR gears for the F1 series. These gears will make the F1 car smoother and more reliable. Ran over 200 laps today with no issues. Tip: Have added significant weight. These cars in the right hands are sub 3.8 possible. John/Lotus-JR **/
"... get on your bad motor scooter and ride!"
Sammy with Montrose