Originally Posted by Kontact

1. Zip tie a crank arm to the chainstay to keep the crank from moving.

2. Pick a tooth on the bottom of the crank to use as a measuring point. Mark it.

3. With the fork pointed straight forward (like while riding straight), measure from that tooth to the center of the dropout.

4. Turn the fork backward in the frame. You'll have to remove the front wheel and do something about the handlebar.

5. With the fork pointed straight backward, measure from that tooth to the center of dropout.

6. Divide the difference between first and second measure by two. That's rake.

7. Put you bike back together. Don't try to go for a ride with your crank zip tied.