Degree Increments for a Super Spacer with a Self-Centering 3-Jaw Chuck -
(This chart also comes in handy for drilling 5 holes in axle flanges and other things.)
Number of holes to be drilled ->

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

For 3 holes ->

120º 240º            
For 4 holes ->

90º

180º 270º          
For 5 holes ->

72º

144º 216º

288º

       
For 6 holes ->

60º

120º 180º 240º 300º      
For 8 holes ->

45º

90º

135º 180º 225º 270º 315º
For 9 holes ->

40º

80º

120º 160º 200º 240º 280º 320º


Degree Increments for a Super Spacer with a Self-Centering 3-Jaw Chuck -
(This chart is for installing multiple trigger screws in the trigger disc for the crank trigger ignition. NOTE: The degrees shown is not for the spark to occur at 0º TDC for each cylinder. They are so each cylinder will have equal timing or distance of spark between them.)
Number of trigger screws to be installed ->

1st

2nd

3rd

4th

5th

6th

7th

8th

For a 2 cylinder engine ->

180º            
For a 4 cylinder engine ->

90º

180º 270º        
For a 6 cylinder engine ->

60º

120º 180º 240º 300º    
For an 8 cylinder engine ->

45º

90º

135º 180º 225º 270º 315º

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