SECOND shots

[Scott358]

Originally Posted by Henry_Mareck

have you measured / calculated you muzzle velocity yet?
looks to be about 10-12 m/s

Very good estimate. How did you "see" that???

A couple design criteria where:
1. Design to a 13m/s wheel speed, as there will be losses.
2. Design based upon 1/2 max motor speed to accomodate any battery issues, allow for an extra pulse to get back up to speed after a shot, and so we can have some room in case point one above was not concervative enough.

Upon testing, we shot a ball 35' at 30 degrees (with no spin on the ball). Based on this, we're pretty confident that we're at 12m/s, as this was FIRST's indirect measure.

Since then, we've lessened the top drum speed to generate a back spin, giving us much better control at the same type of distance.

In order to get a final number, we'll be looking at a buying a speed gun (which I'll use with the baseball team I coach in the off-FIRST-season).