Model name description:
"SGN" is the maker's ID.
"PACS" denotes pump-action clip system.
"R" is the series name.
"55" indicates the plunger internal diameter (55mm).
"S" indicates the version's length (in this case, the "Short" variant).
It works like a Longshot with a brass breech system, the front priming grip is connected to the bolt section which pushes back the plunger while opening the breech at the same time, then the grip/bolt is pushed forward again to close the breech and complete the loading cycle. Pull the trigger to fire, then repeat the loading process.
The breech system is created with 20mm, 16mm, 13mm SingaPlastics PVC pipe and 9/16" brass tubes nested in layers. :)
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I had checked this blog over and over, and i never saw this when it was posted... is it my computer or is someone screwin' with me?
ReplyDeleteAnyway, Looks awesome sg, can't wait to see the final deal. IS it uncomfortable to prime at all, or is it just the angle of the picture?
Floyd115,
ReplyDeleteWell, it's priming system in this design works but it isn't as robust as i'd like it to be, the front barrel and bolt section need a more sturdy structure, hence it's still a work-in-progress prototype.
I've been developing more designs since (and other builders have also come up with great designs too, like Louiec3's REVshot V3 design at NerfRevolution) so i'm currently testing those various designs to tweak their effectiveness and ease of build. :)
I've asked everywhere, maybe you can help. I'm making a homemade very similar to yours. I have a 1.5 inch inner diameter plunger tube. What size rubber washer or skirt should I use for a seal? If you happen to know any MMC #s, that would be great. Thanks.
ReplyDeletetirbykirby,
DeleteNowadays, i just get a sheet of 3-4mm thick rubber and use a compass cutter to cut out the exact rubber washer size that i need, then sandwich it between 2 suitable sized plastic or pvc discs to create the plunger head. :)
Does the diameter of the rubber circle you cut out tend to be a lot larger than the ID of the plungertube, or about equal to it?
Deletetirbykirby,
DeleteI usually make them slightly wider than the ID of the plunger tube. The cut-out rubber washer must be perfect to ensure a 100% air seal.
It is a good idea to make a few rubber washers, then test them to find the best one that fits well.
What type of ranges do you think this homemade would be able to reach, and i was wondering if you have a approximate date of when you will officially finish this blaster. Thanks for sharing all your insight.
ReplyDeletematamata
DeleteWell, this example uses a smaller plunger volume (compared to my other designs) and the breech system isn't quite as efficient, but it still managed to get around 80-90ft ranges when tested.
Unfortunately, i'm not developing this design any further, as there are already better designs done by other builders since.
For reference, you can check out the excellent RevShot design by Louiec3 at the NerfRevolution forum:
http://www.nerfrevolution.com/forums/viewtopic.php?f=9&t=3437
That's just too bad, thanks for the link though sg.
ReplyDeleteJust asking is it possible to create a pistol variant with this design?
ReplyDeleteAnonymous,
DeleteIt's possible, just shorten the plunger tube, breech and barrel to make a more compact blaster.