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Is Limb Timing an Issue?

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Selfbowman:
I agree with Marc. Overbuilt bows. Extra weight on the tips is one example. Vibration from unbalanced limbs.

willie:

--- Quote from: Del the cat on August 28, 2024, 10:02:21 am ---

They are not "individual" limbs, the whole bow is effectively one continuous spring.

--- End quote ---

yes but one end may not react to the loose as fast as the other, or put another way
one end can have more hystersis than the other

 the string comes tight at the end of the release stroke, the timing is the same because there is only one string to define the moment, the tips are suddenly stopped at the same time but the midlimbs (with more mass) are following through and will still move foreward depending on the momentum of that particular end of the bow, and the unevenness or difference of momentum is felt as shock

sleek:
I'm 100% convinced timing is a thing and almost positive limb tips do not return at the same time. The string pulls them back at the same time but doesn't push them back. I shared a few years ago a theory I have I call a limb wave theory. It involves manipulation of the time timing to form a wave that transfers into the string. ThY causes the string to act like a bullwhip and whip the arrow faster.

Thats the abridged version anyway.

Tuomo:
Please see these videos. I made tests with high speed camera years ago.

https://www.youtube.com/watch?v=dUskzh9jaBA
https://www.youtube.com/watch?v=EZ4TdACqABE
https://www.youtube.com/watch?v=6iHEiBa7zMg
https://www.youtube.com/watch?v=xGgWZYny9RM

So, you can decide how much the tiller (and limb timing) is affecting.

Del the cat:

--- Quote from: willie on August 29, 2024, 03:24:20 am ---yes but one end may not react to the loose as fast as the other, or put another way
one end can have more hystersis than the other

 the string comes tight at the end of the release stroke, the timing is the same because there is only one string to define the moment, the tips are suddenly stopped at the same time but the midlimbs (with more mass) are following through and will still move foreward depending on the momentum of that particular end of the bow, and the unevenness or difference of momentum is felt as shock

--- End quote ---
Nice explanation
Del

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