Twisting Turrets-Backlash

[butchlambert]

Using my Leupold I tap it with a hammer, but using a March I just dial.
They both work.

 

[bobinpa]

It was explained to me in a very basic manner....that is without any clearance at all, the parts would not move, instead they would bind. As soon as you add clearance for the parts to move, you add backlash. It cannot be avoided, it can only be minimized. So with that theory, ALL scopes have backlash, some just more than others. Adjusting past and coming back doesn't hurt anything however not doing this might, so why not do it?

Boyd's explanation was right on the money!

 

[bobinpa]

When you are screwing your turrets clockwise, you are pushing the erector tube with what is in effect a jacking screw, against the resistance furnished by one or more springs. On the other hand, when turning counter clockwise you are backing the screw away from its previous protrusion, and counting on the pressure of the spring to make the erector tube follow closely. It is in this situation (making an adjustment that involves turning a turret counter clockwise) that it may be advisable to overshoot your intended adjustment by a few clicks, and come back to it turning clockwise. I got this information, a number of years ago, from the late Dick Thomas, who owned and ran one of the most prominent scope repair and modification services, Premier Reticle.

Perfect explanation.

 

[gunsandgunsmithing]

It was explained to me in a very basic manner....that is without any clearance at all, the parts would not move, instead they would bind. As soon as you add clearance for the parts to move, you add backlash. It cannot be avoided, it can only minimized. So with that theory, ALL scopes have backlash, some just more than others. Adjusting past and coming back doesn't hurt anything however not doing this might, so why not do it?

Boyd's explanation was right on the money!

Well said

 

[Alex Wheeler]

An aftermarket posi lock in one of our high end scopes causes a 1/2 moa shift when tightened. If there was no clearance, there would be no shift.

 

[Evan]

An aftermarket posi lock in one of our high end scopes causes a 1/2 moa shift when tightened. If there was no clearance, there would be no shift.

Not sure how you fit the clutches in there, and do you need OE GM parts?

 

[Dusty Stevens]

Not sure how you fit the clutches in there, and do you need OE GM parts?

Its an air locker

 

[Tommie]

Using my Leupold I tap it with a hammer, but using a March I just dial.
They both work.

Gospel right there. Want to really learn the concept of backlash? Play with a Leupold side AO. Sheesh...