why would you use them? for most cars and tracks i race on, i am using 21-23 tooth crowns. rarely a 20 or 24.
When racing on the 50' quad oval at A&M Raceway,
8/18 gears are my choice to get 1.7 lap times with a stock 6 ohm armature BSRT G3.
On anything except a Life Like T you can use a Wizzard RA09B 9 tooth brass pinion,
with a BSRT 420 20 tooth Delrin crown.
Or use a 7 tooth Tyco pinion with a 15 tooth T-Jet crown,
with Wizzard AA7 .020 nylon spacers to get the same high end gear.
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