Recent content by Bob Callahan

From a long time ago: https://forums.azbilliards.com/threads/whats-the-best-cue-youve-ever-shot-with.237786/

I'm a rock climber, and once upon a time, a long time ago, I got it into my head that I would design a lightweight tent. When I realized it would involve solving elastica equations I gave up. This guy discusses that very thing...

I've been thinking of giving up pool for cow chip throwing. I've been working on some low-deflection cow chips....

...I posted this. Figured it was time for a repeat since they all seem to still be true 12 years later:

Please share a link to the FB place where these were discussed.

Or this:

That's the earliest I've heard of someone hollowing out a shaft. Do you remember the shaft diameter and the wall thickness?

You might find this section of one of Bob Byrne's books interesting...

Knowledge is its own reward.

Since I first started this thread, I've had some time to think about theoretical shafts and squirt testing. It's too early to share some of the results, but here are a few of thoughts: It'd be better to test squirt on bare slate to minimize swerve. So, anybody here about to cover a table and...

Their standard shaft looks pretty good:

David Alciatore did an experiment where he made a notched shaft to test this. I've forgotten where I saw it. Maybe he'll join in....

Let me repeat what I said earlier in this thread: "Sure, but look at the improvements in equipment in other activities that require accuracy: golf, shooting, etc. Those great players would've been happy to use today's best, most accurate gear, wouldn't they? They achieved greatness--not...

Let me repeat what I said in the first post of this thread: "It's the Indian, not the arrow". If Native Americans had had modern compound bows during the European invasion, the outcome might have been a little different. It's the Indian and the arrow. "All shafts deflect". True, but let's...