Is this the same as what we Yanks call a "stock" motor? Back in the brushed days, "stock" was a 27 X 1 with fixed endbell and bushings.
Now we are running 17.5 and calling it "stock."
If that's what this is, gear it to the moon -- Dan's right, 30-T pinion -- and be certain to put a fan on the motor. I run my X - 60 in stock truck at most outdoor tracks geared 29/72 with a fan. For the coming indoor season, I'm going to 30/70.
D.M.S. makes the smaller spurs.
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