Quote:
Originally Posted by mes
I think the problem is not the quality but rather the size of the Schumacher spurs. For stock motors, you'll need spurs in the lower 70s.
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Yes exactly. For example on my previous buggy...RB5SP w/2.6 internal. I used 72/30 for a 17.5. I may have to use AE spurs and drill center, but I hate to ruin spurs if they don't come out right.
Here are some starting suggestions that I have gathered for diff. mfr's starting points. An 80T is too big to get these ratios.
Epic cans
6.0:1 to 6.5:1 for 17.5
7.5:1 to 7.0:1......13.5
LRP can
5.5:1 for 17.5
6.5:1 .....13.5
Speed Passion
4.6:1 to 6.0:1 for 17.5
4.8:1 to 6.0:1......13.5
Novak
6.5:1 for 17.5
7.0:1......13.5