Best WBL sabot design yet!

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timbo
Posts: 2
Joined: Thu Jun 23, 2011 8:05 pm

Best WBL sabot design yet!

Post by timbo » Fri Jul 15, 2011 1:16 am

OK I'm going to go out on a limb and say that I may have found the perfect sabot design. I based it on the gold standard found here: http://forums.sscentral.org/t4638/

I tried to make the above design using a pringles can and also using a tennis ball can. Both were just a tiny bit too big for my 3" barrel. I suspect it may be because I used schedule 80 PVC not the standard schedule 40 stuff, but this is just a guess.

The sabot fits the barrel with a few millimeters of clearance, so there's little friction upon launch. It's possible there is some blow-by costing me distance, but I get almost 400ft @ 90 psi so it seems to be working pretty well.

Design improvements:

- All plastic - no paper, cardboard or tape to get wet and deteriorate
- Uses only two components: a plastic bottle and some foam
- Made of tough, rigid plastic to last a long time
- Fits a 3" barrel perfectly -- perhaps a millimeter or two of clearance.
Attachments
wbl8.JPG
sabot10.JPG
sabot9.JPG
sabot8.JPG
sabot7.JPG
sabot6.JPG
sabot5.JPG
sabot4.JPG
sabot3.JPG
sabot2.jpg
sabot1.JPG

timbo
Posts: 2
Joined: Thu Jun 23, 2011 8:05 pm

Re: Best WBL sabot design yet!

Post by timbo » Fri Jul 15, 2011 1:29 am

I thought I might as well post pics of the WBL design as well.
Best shot so far is 400 ft @ 90 psi. Breaks about 1 in 20 balloons.

Future planned improvements:
- Remove the solenoid from the sprinkler valve and replace with epoxy
- Replace bungee cords with something more elegant, maybe a big hose clamp
- Adapt a small camera tripod to make it a mortar rather than handheld
- Paint with camouflage colors :D

Tim
Attachments
wbl7.jpg
wbl6.JPG
wbl5.JPG
wbl4.JPG
wbl3.JPG
wbl2.JPG
wbl1.JPG

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C-A_99
Posts: 1502
Joined: Tue Aug 01, 2006 11:09 pm

Re: Best WBL sabot design yet!

Post by C-A_99 » Fri Mar 23, 2012 8:44 pm

Well, this post got no replies, so I'm going to go out and abuse my admin powers and post one in hopes that you come across it.

This is some pretty good work here. I like how you got the barrel and pressure chamber to hold together. The unique sabot design gives interesting ideas for experimentation too.

Anyway, if you do stumble upon back here, do drop a post or two at [url="http://waterwar.net/site_wwn/board/]WaterWar.net forums[/url].

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