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Search: Posts Made By: popgun pete
Forum: All Other Gear Yesterday, 10:59 PM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

Diving pioneer Commandant Yves Le Prieur patented a full face mask for snorkelling at the surface and shooting fish below with his rollerspear. Le Prieur was also involved with air supplied deep...
Forum: All Other Gear 06-22-2022, 08:58 PM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

The largest drawback with full face snorkel masks is you have a big air bubble strapped to your face which, unlike a conventional snorkel, you have no mouthpiece to spit out if you find yourself in...
Forum: All Other Gear 06-21-2022, 11:07 PM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

Here is the schematic for one embodiment annotated after reading through the patent text. This version pipes both inlet and outlet air via the snorkel tube, other designs can push exhaust air out via...
Forum: All Other Gear 06-21-2022, 12:55 AM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

There are many full face snorkel mask patents, some covering the ornamental or external appearance and others the technical features and internal structural variations, but I eventually found ones...
Forum: All Other Gear 06-20-2022, 09:26 PM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

This appears to be the source in China. Note the prices compared with their retail!
https://www.alibaba.com/product-detail/Orsen-Newest-Electric-CO2-Reducing-System_1600232401656.html
Forum: All Other Gear 06-18-2022, 09:55 PM
Replies: 52
Views: 41,794
Posted By popgun pete
Re: Full face snorkels

A good review article worth reading completely.
https://www.tropicalsnorkeling.com/full-face-snorkel-mask.html

A mask with a fan motor that shows how crazy some designers are to find a point of...
Forum: All Other Gear 06-17-2022, 06:24 PM
Replies: 6
Views: 996
Posted By popgun pete
Re: Chinese limb mounted dive propulsion units

I guess as much thought went into the advert copy as went into the actual units. They were both assigned to people who knew nothing about diving or even swimming. These drive pods will have some...
Forum: All Other Gear 06-15-2022, 10:58 PM
Replies: 6
Views: 996
Posted By popgun pete
Re: Chinese limb mounted dive propulsion units

And the "diver" was never seen again.
Forum: All Other Gear 06-15-2022, 10:55 PM
Replies: 6
Views: 996
Posted By popgun pete
Chinese limb mounted dive propulsion units

The mind boggles, I just chanced across these gadgets today.
https://www.ebay.com.au/itm/144473144962
Wearable portable Electric Underwater Scooter Dual Propeller Water Sports Equipment Diving...
Forum: All About Guns 06-07-2022, 07:28 PM
Replies: 31
Views: 14,724
Posted By popgun pete
Re: RIFFE Marauder speargun

I agree completely.
Forum: All About Guns 06-06-2022, 08:04 PM
Replies: 31
Views: 14,724
Posted By popgun pete
Re: RIFFE Marauder speargun

Just received this recall notice for some Marauder models.
Forum: All About Guns 05-10-2022, 09:17 PM
Replies: 40
Views: 6,982
Posted By popgun pete
Re: Fusion Rollers vs Standard Rollers

Because the same band rubber connected in series with a load applied to it always undergoes the same proportion of stretch in the various segments I had to slightly modify the diagram accordingly to...
Forum: All About Guns 05-10-2022, 01:17 AM
Replies: 2
Views: 934
Posted By popgun pete
Re: James Bond Speargun: Scubapro Magnum

It could be that this gun is not unique as shooting of scenes in segments could mean more than one gun was used. We can see from this photo that they had a bunch of them in a wall rack, including one...
Forum: All About Guns 05-09-2022, 08:05 PM
Replies: 2
Views: 934
Posted By popgun pete
Re: James Bond Speargun: Scubapro Magnum

The shaft plastic clip, there are two of them, one in front of the grip handle section and the other as shown at the muzzle....
Forum: All About Guns 05-09-2022, 08:02 PM
Replies: 2
Views: 934
Posted By popgun pete
James Bond Speargun: Scubapro Magnum

Whenever James Bond and spearguns are discussed one tends to think of the Technisub “Jaguar” which was used to skewer a baddie and nail him to a palm tree in "Thunderball". During a search which had...
Forum: All About Guns 05-08-2022, 11:43 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

Cuttlebone shaped barrels on euroguns were usually fitted to plastic handle guns that had mechanism levers swinging inside, but not much other metal, so while the rear handle is heavy, it is not that...
Forum: All About Guns 05-08-2022, 03:54 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

Cetma Composites offer an interesting barrel shape on their gun.
They also have the double roller trigger....
Forum: All About Guns 05-07-2022, 01:04 AM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

Here is a 26.5 mm barrel.
https://www.nautilusspearfishing.com/product/nautilus-speargun-cuttlefish-shaped-carbon-fiber-barrels/
China seems to be into producing carbon barrels, possibly even the...
Forum: All About Guns 05-06-2022, 10:42 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

All the cassette based eurogun trigger mechanisms have one common trait and that is the shaft tail goes into an opening where the only controlling factor is the sear box ceiling and the top of the...
Forum: All About Guns 05-05-2022, 09:30 PM
Replies: 8
Views: 7,746
Posted By popgun pete
Re: Seawolf "Velair": Another pneumo-powered Arbalete

Another video of a shot in a pool where you can see how the cable pulley system works.
https://www.facebook.com/seawolfsub/videos/1507256709689023
Forum: All About Guns 05-05-2022, 03:53 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

If shafts are not properly locked in then guns can misfire, the problem is if someone pushes a shaft in and thinks it has been caught when it is not. Not all shafts have a flat on top of the tail....
Forum: All About Guns 05-05-2022, 01:07 AM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

I think swapping shafts is asking for trouble, I have shafts for both and keep them separate. Whereas there was an attempt long ago to make eurogun shafts universal there was no such effort made with...
Forum: All About Guns 05-04-2022, 07:12 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

A smaller "sear tooth" roller will give more ceiling room for the shaft tail to fit into, but will tend to pull up onto the front of the cupped recess in the sear lever arm. The mechanism will still...
Forum: All About Guns 05-03-2022, 11:10 PM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

Without pulling the trigger mechanism out of the handle I think that this must be the one being used. It has the same trigger and the small windows in the housing sidewalls. The name stamped on top...
Forum: All About Guns 05-03-2022, 02:01 AM
Replies: 67
Views: 5,463
Posted By popgun pete
Re: Ermes Avatar speargun handle

Now you can see inside the rectangular slot there is a parting line in the center, so this may be two fixed pegs in the moulding die rather than an insert as I surmised before. When moulds are brand...
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