1. Why Posi-drive Pulleys? What We thought we were Getting:
Cheaper than the Gearbox!
$150 Gearbox
$88 for two pulleys and a belt
Lighter!
Lost about a pound
Better distributed weight
Consistency of Design!
Everything is belts/pulleys or sprockets/chains
Cool, New thing!

2. Why Posi-drive Pulleys? What We Actually Got:
Slippage
The belt comes off once we get it going
A Screw Loose
The set screws loosen
Dangerous at high speeds
Not effective
Frustration

3. Our Options: Pros Cons Pros Cons Try to Solve the Posi-Problems
Use the Angle-Gear
Pros
Still the cheaper solution
Cons
Need to do some major thinking to make it work
Pros
Can return if it’s not what we want
Easy
Cons
Expensive!
Slight redesign for Differing Shaft size
Need to Purchase a coupler

4. Further Issues No Refunds for these The AngleGear puts us over budget
Bearings are too stiff
McMaster- “Designed to be stiff”
Can’t return anymore
Can’t Return things to SDP any more
The AngleGear puts us over budget
If we are to buy the coupler and improve the bearings we will need more money.