Jaguar Pneumatic Pump Wanted

[Prater]

I have been searching online for the hand pump that fits a pneumatic Technisub Jaguar Speargun. It was manufactured in the 1960's. Or maybe someone can give me a few shop numbers to call that handles antique guns and parts. I also need some Nimrod shaft to piston adapters.

Any help appreciated.

[IyaDiver]

Prater,

I don't know if this helps and I am not falimiar with that classic Jaguar, however I know a great deal about Mares Stern and the now discountinued Scubapro pneumatics.

If you know a machine shop, perhaps that is the best solution.
If your Jaguar has the butt plug where it covers the "PUMP-IN" hole, you might want to use that plug as a copy to machine a pump adaptor.

Get a Mares Stern or Cyrano pump and make a pump adaptor to fit your Jaguar pump in hole, I think that is the best solution if you failed to source any on the net. A pump is a pump, it is a matter of the threading and O-ring position.

As for the shaft to piston adaptor, machining is another good way if you have a sample. I did this for my brand new Mares Cyrano 850. It comes with a lousy shaft made supposedly from a good Inox steel which I bent during loading. I always pumps at least 50 pumps exceeding manufacturer ratings, I like it. So I bought a long enough Riffe Hawaiian shaft of 9/32", cut the loading tab and machine a new piston to shaft adaptor. Now my Mares 850 has a nice good hardened spring single flopper Hawaiian stainless steel shaft.

If you don't have a sample of the shaft to piston adaptor. Just go to a shop that has a Mares Stern and a Mares Cyrano. Try their shaft. Stern uses 8mm ( 5/16" ) and the Cyrano uses 7mm ( 9/32" ) shaft. Load the shaft 20% into the barrel and release it, no need to cock fully. If the shaft piston adaptor of either Mares fits your Jaguar's piston, you can tell by trying to pull hard, you will feel some sort of "locked" resistance when pulling the shaft from the gun's piston. Any pneumatic shaft that can maintain a sitting on the gun's piston when the gun is pointed down with the shaft in, should be good enough to use.

Good luck.

IYA

[Prater]

Thanks Iya, I have a sample of the piston to shaft adapter. And my next idea was the same as your suggestion on the pump. I have stainless rod to make my shafts and a lathe to cut my own adapters, just being lazy right now. I know everyone likes the spring stainless shafts, but they are hard to machine. My regular SS rod should work for the smaller freshwater fish that I will be hunting. Do you agree??

[IyaDiver]

Hi Prater,

The problem with pneumatic, even older models, it probably operate at least at 20BAR. If you use 316 or 304 SS it does not have the stiffness and the "spring" in it. Pneumatic shafts get pushed hard when loaded, that is why many suppliers supplies steel so that it is strong and will not bend. I rather you get some tough steel if not spring SS. SS will bend easy when loaded, trust me. For bands gun SS is ok but for pneu it is not a suitable shaft material.

[Prater]

Thanks for your advice Iya. I will look at regular steel for now. Most dives here are only 10 Meters, so pneumatic was recomended by my instructor. I have a Seac Sub ASSO 50 that I plan to use around local lakes, then I will get a band gun for trips to the gulf.

[IyaDiver]

Steven,

Try to use the most slim design spearhead for a pneu with shaft of less than 40" ( a common length ). If you can make your own Hawaiian shaft, it will be good. You can buy a Flopper kit from Riffe or JBL or Biller. Pneu shaft has the speed but the total weight is light, thus not enough momentum. A Hawaiian shaft with either a pencil point or a tri-cut ( sharper ) will allow easy penetration. On my older Stern 80cm+-, often I don't get full penetration with original spearhead on a 10# fish from 6 feet away, a twin flopper screw on type. I can't load a pneu longer than 95 cm, I am short you see.

Have fun.

[JimB]

Prather,
I have a Jaguar pump and two complete shafts that I'm not using. I want to keep the gun as an antique. Let's talk.