Needle Bearings On The End of the Spring?

[joffy]

I've just bought a txsr with one of these bearings fitted between the rear guide and the trigger block. It does shoot very well. Would it be advisable to remove it?

Trigger block is alloy so will wear in no time

[gtfreight]

Trigger block is alloy so will wear in no time

Thank you, I will remove it before I use the gun again.

[NickG]

It won't wear the trigger block , if it's a flat race ie three piece , they are designed so one piece stays still, it's the whole point of a thrust race.

[joffy]

It won't wear the trigger block , if it's a flat race ie three piece , they are designed so one piece stays still, it's the whole point of a thrust race.

He won't know until its been cracked open

[ricardolamos]

As others have said the longevity of needle bearings would be my concern and I would feel a lot more confident using a plain bearing.

Delrin or Iglidur have low efficients of friction and should stand up pretty well.

[robs5230]

I experimented with thrust bearings about 8 or so years ago.
I never really noticed an improvement over my usual setups.

If anything, as Nick says above, they pinch crucial spring room, so I stopped using them.

[TonyL]

I did try it, and it does "work", but I couldn't detect any advantage over just a couple of hard steel slip washers and a dab of moly... on the downside however, their physical constraint mean they are tricky to fit to many smaller clylinder bore guns, plus there are the concerns about long term reliability.

And spring room .

I experimented with thrust bearings about 8 or so years ago.
I never really noticed an improvement over my usual setups.

If anything, as Nick says above, they pinch crucial spring room, so I stopped using them.

Yes. Excellent points.

[Born Again]

Another point worth considering, needle and other rolling element bearings aren't great with sudden accelerations, the angular momentum of the moving parts can result in them skidding instead of rolling. I don't know whether or not the movement of the spring end is fast enough to cause a problem, but it's something to bear in mind.