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why is there a difference in the cylinder spin (how fast it turns) at half cock on various SAA? they don't all spin at the same rate; not that it really matters, just a question.
 

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why is there a difference in the cylinder spin (how fast it turns) at half cock on various SAA? they don't all spin at the same rate; not that it really matters, just a question.
The amount of "free spin" of the cyl. in the 1/2 cock position is determined by the amount of pressure that the hand spring exerts when pushing the hand forward to engage the ratchets on the rear of the cyl.-the heavier the pressure the more wear it creates on the hand & the ratchet causing it to turn slower which is the reason when u take the cyl. out of an older gun the ratchets are very worn as is the hand,w/use over the yrs. the spring weakens & causes the cyls. to spin easier.What I've always criticized is what I call "the colt purist attitude" when they say they want to keep it original by not doing an action job,what they don't understand is by using it w/a stock action they are actually wearing out the parts sooner & DETRACTING from the value,if they want to sell it later w/a stock action all they have to do is put a factory mainspring & sear & bolt spring in it & it will go back to "original" but the other parts will be better fit than when it left the factory.Another upside to tuning the gun is that your shooting will improve because the gun is working more efficiently.
 

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Ditto, excellent answer. The free spin is also based on friction. The better the parts are fitted and polished the less friction and easier to spin. Overly strong springs are typically supplied on new guns to overcome friction from mass produced and mediocre parts fitting. They actually cause guns to beat themselves to death.
 
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