PCP Cricket tactical inconsistent. Solution please?

[Mubhaur]

Someone gave me his Cricket tactical for fixing the issue of inconsistency.

I chronied it and it was like 880 fps, 970fps, 940fps etc.

Neither its behaviour is of unregulated gun nor like a regulated gun.

The owner has already given it to two tuners but no one could fix it.

He also installed Huma regulator but in vain.

I disassembled the gun and found that regulator is working fine.

Checked that valve pin is not seizing in the hole.

Cleaned the gun and adjusted the valve return spring at a higher pressure.

Lubed the necessary areas and reassembled it.

Now the behaviour is a bit better but then there is low or high fps by 50fps. The spread is also not like it should be.

Now as the regulator is fine, I can just assume that there may be some rough area on hammer or in the channel in which hammer moves.

I couldn't disassemble the hammer as the screw type pin that holds the hammer inside the action is too tight and couldn't be unscrewed.

I can just assume that due to some reason the hammer strike is not consistent which results into inconsistency.

Please advise.

Regards,

Bhaur

 

[CTAirgunner]

What is the regulator currently set at?

 

[Mubhaur]

What is the regulator currently set at?

It's around 125 bars

 

[Centercut]

Someone gave me his Cricket tactical for fixing the issue of inconsistency.

I chronied it and it was like 880 fps, 970fps, 940fps etc.

Neither its behaviour is of unregulated gun nor like a regulated gun.

The owner has already given it to two tuners but no one could fix it.

He also installed Huma regulator but in vain.

I disassembled the gun and found that regulator is working fine.

Checked that valve pin is not seizing in the hole.

Cleaned the gun and adjusted the valve return spring at a higher pressure.

Lubed the necessary areas and reassembled it.

Now the behaviour is a bit better but then there is low or high fps by 50fps. The spread is also not like it should be.

Now as the regulator is fine, I can just assume that there may be some rough area on hammer or in the channel in which hammer moves.

I couldn't disassemble the hammer as the screw type pin that holds the hammer inside the action is too tight and couldn't be unscrewed.

I can just assume that due to some reason the hammer strike is not consistent which results into inconsistency.

Please advise.

Regards,

Bhaur

With Crickets its usually the hammer and hammer "tunnel". Remove the hammer. Clean and polish the tunnel, then clean and polish the hammer and hammer spring. When those areas get dirty and/or gritty then can really affect speed consistency. I do not lube those areas at all, but if you do use dry lube and be very minimal. A hot air gun might help to loosen that screw that is giving you trouble.
Mike

 

[MountainSportAirguns]

With several "tuners" being involved I'd guess looking towards a more simple explanation. Any air coming out around the probe, check that the moderator isn't being clipped etc, I agree to stay away from heavy lubricant after a good cleaning of the hammer and tunnel.

 

[Mubhaur]

Today on detailed inspection I knew that a spring highlited in red colour below is missing due to which the sear rubs the hammer.