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Unread 25-09-2014, 00:36
billbo911's Avatar
billbo911 billbo911 is offline
I prefer you give a perfect effort.
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Re: pic: 1678's 2014 Robot - Beca

Quote:
Originally Posted by quantcyg View Post
We didn't have a precise way of adjusting speargun tubing tension; rather, we added or removed wraps as we thought necessary as we calibrated the shot. (I believe we ended up with about 100 pounds of force as measured at the top of the catapult in the fully cocked position.)

However, we could adjust the catapult throw by changing adjusting a nylon strap attached at one end to the top of the catapult arms and at the other to a bearing sled that moved along slots in the main catapult frame. We could also move the spiral cam's distance from the shaft that it pushed on to change the overall crank-back of the launcher. Adjustable fingers managed fine shot tuning.
I would love to see detailed picture of what you are describing.
If you will be at Mad Town, I'll swing by your pit for a closer look.
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