Experiment on a RipR

Which layout is right for me?

Moderator: Moderators

Post Reply
User avatar
Guined
Pro Shop
Pro Shop
Posts: 35
Joined: February 18th, 2010, 1:57 am
THS Average: 225
Positive Axis Point: 5 over 1/4 up
Speed: 16mph
Axis Tilt: 17°
Axis Rotation: 45°
Location: Salem, OR

Experiment on a RipR

Post by Guined »

Well not really an experiment but a validation of learning.

Mo had given me a suggested drilling on a RipR a while back for drier lanes.
65°X 2 1/4" X 40°

So understanding what this drilling would do. I decided to validate it using my DeTerminator.

Using the 60° spin time technique is spun the ball undrilled, then after I drilled it and then again after I added the balance hole. I new I would need a balance hole as the CG was shifted about 1 1/2" to the right.

Spun the ball three times and took the average each time.

5.15 seconds avg. undrilled "actually did this two diffrent times to verify the 5.15 second spin time since the technical data for the RipR says it has a spin time of 6.6 seconds".

7.10 seconds avg. after drilling.

6.89 seconds avg. after P2 Balance Hole.

So to summarize, I expected the spin time to be more with the layout used which the was proven. After seeing the spin time, I decided that I wanted to keep that reaction so I placed the P2 hole knowing it should have little effect on the reaction. That was proven by a change of only .21 seconds.

It's great when a plan comes together!! :D :D
IBPSIA Technical Certification
IBPSIA Advanced Technical Certification
USBC Bronze Coach
VISE PBA Regional Staff Player
Post Reply