Piranha R6 Hammer O-ring size

[Cdn_Cuda]

Fixing a guy’s Piranha R6 and his orings are just slime. Replaced all the o-rings but the hammer needs a different sized o-ring. What size does it need? Or do I have to track down some strange specialty o-ring? Marker does not properly cycle at the moment.

[Toestr]

The manual says oring so I'd guess it's not a special seal. I'd probably try an 016. The older Spyders used those on the hammer.

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[Cdn_Cuda]

Thanks, I’ll give it a try.

[Trbo323]

I'm pretty sure it's still an 015, it's just that on piranhas they seat the ring more on the front face of the hammer instead of around it. It's been a while since I've rebuilt one though, but try a 015 and 016, the wrong one will be too tight or too loose


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[Cdn_Cuda]

Neither an 015 or 016 work. Gun fails to recock. Going to try and 017 next and see what happens.

[Hobbes]

I too have a Piranha that won't recock. Are you trying it with or without paint?

[Cdn_Cuda]

Dry firing. Tried the 017 o-ring and it's way too big. I'll try to use paint and see if that changes things. Was using a regular tank but it was getting low so switched to a SHP tank with 2K air left and no different. Shot, but wouldn't recock.

[Trbo323]

Yeah that's not an o ring issue, that's a piranha issue

High input pressure (co2 preferred) and put a barrel swab down the barrel.

My personal theory on why is that the hammer is larger than it needs to be requiring both a higher volume and pressure of air to reset. Using a barrel swab or paint helps by creating back pressure in the upper tube

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[Trbo323]

Also you might want to check that the valve is in the correct direction (large hole forward) most of us have done that at some point and the results are largely the same

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[Cdn_Cuda]

That was the next thing I was going to check. Have done that before with Spyders as well. Likely the cause of my issues.

[Cdn_Cuda]

Flipped the valve, now leaks. So thinking I had it in the right way. I’ll switch in a Spyder hammer and hope it works

[glaman5266]

Have you tried swapping any springs?

[Cdn_Cuda]

Not yet. Has a blue spring in it at the moment. Not sure I have many options for Spyder springs.

[Cdn_Cuda]

Flipped the valve the proper way, swapped to a stock looking spring and same issue. I’ll try a black spring next. But thinking it’s air getting past the hammer causing it not to recock.

[Trbo323]

Flipped the valve the proper way, swapped to a stock looking spring and same issue. I’ll try a black spring next. But thinking it’s air getting past the hammer causing it not to recock.

Also, take the front block off and blow through the asa by mouth, see if there are any restrictions, I've run into that before

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[Cdn_Cuda]

Black spring made no difference, nor did trying it with paintball. Sounds like my hammer is bouncing on the valve, like when air is running out, but not enough to recock the valve. Spyder hammer won’t work either, different shape entirely.

[Rolling Thunder 67]

May want to look at the edge of the rear sear,should be square and sharp,when there slightly worn they will not catch the hammer and stop it,causing the hammer bounce you mentioned. Check the sear and the hammer, if they look rounded,lightly dress the edges with a file till they are square and sharp.This may solve your problem.Worth a look.

[Cdn_Cuda]

There is noticeable wear on the hammer and some rounding. I’ll hit it with a file and see if that fixes it.