Hi,
I'm using a B4 with a Tekin 10.5 hooked up to my Sphere TC. I found that a 26 tooth pinion with 10 deg. of timing on the motor works well - plenty of punch, reasonable top end, and only slightly warm to the touch after 5 minute runs.
Or, a 28 tooth with no timing advance works OK too. Less punch, but decent top end, only warm to the touch coming off the track, happy days.
Although it's a bit of a squeeze....
|