DIAMETERS OF POPULAR SLOT.IT GEARS
In the 1-24 world, a tool-guage is available to quickly identify the Tooth-count of a Spur or Crown gear. This is helpful because some manufactures mold the Z-number into their gears, or encodes it into the Part number (eg. 4834A, is a 48-pitch, 34 tooth, angled (12deg) gear), but Many do NOT.
I took this idea and measured Slot-IT Crowns. I found a consistent Diameter for Both color-coded (normal) crowns and White Offset crowns.
Since the tooth-count of Offset crowns are very hard to read (its small and molded into the land between the teeth/edge and the collar) an easy to use measuring system can be Helpful when trying to determine what Used gear is installed on your car (e.g. you did not keep detailed notes on every setup!)
23Z/PINK 13.5M /* with 9z pinion, gear ratio – 2.56 Hot
24Z/GREEN 14M /* 2.67
25Z/ORANGE 14.5M /* 2.78
26Z/BLUE 15M /* 2.89
27Z/BLACK 16M /* 3.00 OEM / Mild
Just-for-Grins – the 1-24 gear guage is shown below for application of this concept.
https://www.vanguardspeedlab.com/products/gear-gauge
"... get on your bad motor scooter and ride!"
Sammy with Montrose