Sand Rail Blue Prints How Do I Modify My Sand Rail Starter?

How do I modify my sand rail starter? - sand rail blue prints

The train to use the starter is not full, you turn the steering wheel. I have a 65 engine Chevrolet Corvair and VW tranny. The owner told me that he started only comes in one size, but not big enough to drive. Someone knows this problem or have a suggestion? Thank you!