Spring Gun Tuning

[Clank]

never carry out any modification to an air rifle or pistol unless you have access to a cyrono
or you could be in a hole lot of trouble

I think you mean whole, though hole is quite appropriate.

[Herx77]

Just a thought. If the spring does not bear on surfaces why do tuners put grease on it.Is it to mask problems which should have been taken care of by the tune itself.If not, the problem which is being masked is surely one that needs to be taken care of. It will always be there!
HERX77 .

[Rapidnick]

Just a thought. If the spring does not bear on surfaces why do tuners put grease on it.Is it to mask problems which should have been taken care of by the tune itself.If not, the problem which is being masked is surely one that needs to be taken care of. It will always be there!
HERX77 .

I don't follow this. Of course the spring 'bears on surfaces' otherwise it would be suspended in thin air and couldn't do its job which is to convert the work the shooter puts in when the rifle is cocked into a pulse which in turn expels the pellet from the rifle.

[Herx77]

I don't follow this. Of course the spring 'bears on surfaces' otherwise it would be suspended in thin air and couldn't do its job which is to convert the work the shooter puts in when the rifle is cocked into a pulse which in turn expels the pellet from the rifle.

.

When cocked the spring dia expands and is effectively loose on the guide,held in position by the sear, and in mine, the rotary thrust needle bearings at the base of the spring.When the sear releases the spring it extends and eventually 'grips' the spring guide at max extention,any rotary movement taken care of by the bearing.
The spring movement mainly is expansion and contraction,with minimal if any slide,if properly arranged. Mine does not seem to suffer from my set up!.Only my imput.
HERX77 .