Posts by tromic

This is, I suppose, the simplest possible vacuum barrel system for Cyrano. I haven't try it yet, but I am sure it would work.
Tomba12easy uses unchanged - original muzzle on the gun. Water relief ports are closed with adhesive tape. All threads in the muzzle should be sealed too. O-ring is 12 x 7 x 2.5 mm, for 7 mm shaft.

Thanks and greetings to all.

Quote from Dan

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The piston adapter on the butt of the spear is ground down for a looser fit into the piston. This reduces the loss of power when the shaft leaves the piston. It also allows me to remove the spear from the gun while it's still in loaded condition. Last I changed the line release to the right to be consistent with my band guns and allow wrapping of the shooting line the same way; holding the gun with the left hand and wrapping with the right.

https://spearfishing.world/image/Cyrano08Slider-1.jpg

All I'm missing is the flotation device I previously mentioned. If someone sources one please let me know.

I was also trying to solve that problem, grounding down the butt, but it is better to put plastic plug into the piston:

Thanks Don! Glad to see you too.

Hi, my name is Tomislav Romic.

I live in Zagreb, Croatia and dive and spearfishing on Adriatic sea during my holiday. My other interests involve fishing, riding bikes and scatting. Recently I am trying to improve pneumatic guns performance designing my own vacuum barrel kit - Tomba. I've decided to join this forum to hear about others' experiences and to share and obtain spearfishing knowledge.