Search found 936 matches

by SSCBen
Thu Feb 16, 2017 11:27 pm
Forum: Homemades
Topic: Next generation rubber CPS homemade water gun planning
Replies: 36
Views: 4429

Re: Next generation rubber CPS homemade water gun planning

Tim, I think you're on a great track so far. Sorry for the delay. I had forgotten to reply here after reading through everything. The firing valve is nice. Based on the experiments you've done so far, I think you're on the right track. I had meant to mention in the other thread (seems I never posted...
by SSCBen
Wed Feb 15, 2017 4:47 pm
Forum: Water Wars
Topic: 2017 Water Wars
Replies: 11
Views: 1589

Re: 2017 Water Wars

May 27-28 could work for me. I'll try to keep my schedule open that weekend.
by SSCBen
Tue Feb 07, 2017 10:23 pm
Forum: Water Wars
Topic: 2017 Water Wars
Replies: 11
Views: 1589

Re: 2017 Water Wars

Great idea, marauder. My schedule for the moment is tentative. To update the schedule I posted before : - My class schedule for this semester is M/Tu/W/Th. Nothing required on Friday, as long as I don't miss too many meetings then. - My spring break is March 13-18. No travel plans for spring break a...
by SSCBen
Thu Jan 26, 2017 2:00 am
Forum: Homemades
Topic: *PROPER* LRT expansion.
Replies: 6
Views: 1087

Re: *PROPER* LRT expansion.

I'd worry this would push the bike tubes out of the way. You might do better to have fewer bike tubes in the front rather than none. Here's what might be a better approach. Fill new LRT with a bit of water outside the gun a few times. You only need enough to get a small bulb at some point. The expan...
by SSCBen
Wed Jan 25, 2017 1:20 am
Forum: Homemades
Topic: Possible source for electric water pumps for future electric homemade soakers
Replies: 6
Views: 1079

Re: Possible source for electric water pumps for future electric homemade soakers

Another good find. This gave me an idea. I think a hybrid design is worth considering. Get a slower but high pressure pump and replace the regular pump in a standard separate pressure chamber design with an electric pump. Now you can have high flow on demand, and might still charge faster than others.
by SSCBen
Sun Jan 22, 2017 6:49 pm
Forum: Homemades
Topic: Possible source for electric water pumps for future electric homemade soakers
Replies: 6
Views: 1079

Re: Possible source for electric water pumps for future electric homemade soakers

Nice find. This is cheaper than the electric pumps I recall when I looked into this about 10 years ago. I don't know that much about pumps, but here's what I do know. The flow rate is the maximum. You probably won't get that in a real water gun. Also, judging by the maximum height given in the video...
by SSCBen
Tue Jan 10, 2017 10:30 pm
Forum: Other Equipment
Topic: Life Straw
Replies: 4
Views: 2811

Re: Life Straw

This is an interesting find, marauder, thanks for pointing it out. I probably will grab one of these for my survival kit. Tim makes an excellent point. I think we could make a filter that's more relevant for water guns. The water does not need to be potable, but it should be free of visible debris. ...
by SSCBen
Tue Jan 10, 2017 2:43 pm
Forum: Other Equipment
Topic: Protection and Shielding
Replies: 10
Views: 2213

Re: Protection and Shielding

I appreciate your encouragement, Tim. My concern is more than I spend some time making something that works and then it gets banned. This stems from my experience with Nerf, where pneumatics are basically banned for "safety" reasons. I spent a lot of time trying to demonstrate to people that my pneu...
by SSCBen
Fri Jan 06, 2017 6:33 pm
Forum: Other Equipment
Topic: Protection and Shielding
Replies: 10
Views: 2213

Re: Protection and Shielding

After some more research and thought, I think some sort of "sci-fi shield" for water droplets might actually be possible. Basically, water shot at the shield would be deflected or stopped in some fashion. I'm considering doing more research into this. Before I dedicate more time to the idea, what do...
by SSCBen
Sat Dec 03, 2016 7:36 pm
Forum: Homemades
Topic: POPCAP
Replies: 15
Views: 11425

Re: POPCAP

The air sheath probably won't be included in anything I make in the near term. At the moment I'm more interested in describing the idea to see if others can try it. You could make such a nozzle by taking a tube larger than the pipe of the nozzle and attaching a plate with a hole somewhat larger than...
by SSCBen
Fri Nov 25, 2016 9:48 pm
Forum: Homemades
Topic: Accumulator tanks as pressure chambers
Replies: 13
Views: 1838

Re: Accumulator tanks as pressure chambers

I do not recall any others at SSC who used these tanks. Unfortunately, there are two volumes reported for these tanks: the overall volume (water and air) and the maximum water volume. It can be hard to know which is being used in the product literature. From what I've seen manufacturers and sellers ...
by SSCBen
Sun Nov 20, 2016 3:04 pm
Forum: Homemades
Topic: Accumulator tanks as pressure chambers
Replies: 13
Views: 1838

Re: Accumulator tanks as pressure chambers

jSpazz, I appreciate your post. I don't know much about these tanks and learned a few things, like to not charge the tank with water if the air side is not pressure. I bought an "expansion tank" at Home Depot for about $40. See the attachment for a comparison with a pinch valve. I also ordered a fit...
by SSCBen
Sat Nov 12, 2016 1:33 pm
Forum: Homemades
Topic: Accumulator tanks as pressure chambers
Replies: 13
Views: 1838

Re: Accumulator tanks as pressure chambers

Doing the math, I get the impression that the weight for the 2 gallon tank might be acceptable. A dual chamber APH's PCs weigh about 4 lbs. The precharger I made last summer is about 9 pounds, and was really heavy. I'd like a lighter tank, but at least it's not much worse than an APH. Unfortunately ...
by SSCBen
Thu Nov 10, 2016 7:46 pm
Forum: Homemades
Topic: Source for water reservoirs
Replies: 2
Views: 620

Source for water reservoirs

http://www.usplastic.com/catalog/item.a ... goryid=934

I am very pleasantly surprised to find these tanks. The variety of shapes and reasonable cost should make them very attractive for homemades.
by SSCBen
Thu Nov 10, 2016 12:36 am
Forum: Homemades
Topic: Accumulator tanks as pressure chambers
Replies: 13
Views: 1838

Accumulator tanks as pressure chambers

A few people back at SSC made backpack blasters with accumulator tanks, also called bladder tanks. Basically, the tank has a rubber gasket separating air and water, so it'll work at any angle. They are used in RVs and homes to smooth out the flow if there is noise and also to avoid turning on a pump...
by SSCBen
Wed Nov 09, 2016 10:22 am
Forum: Homemades
Topic: POPCAP
Replies: 15
Views: 11425

Re: POPCAP

Yesterday I bought a pinch valve for an experimental setup for my PhD. The valve should get here in two weeks. I'll be thinking about how to use this type of valve in a water gun while I make the setup. At the moment I am considering using the pinch air exhaust as an "air sheath" around the water je...
by SSCBen
Wed Oct 19, 2016 11:46 pm
Forum: Water Wars
Topic: Meet Ups in VA and MD
Replies: 35
Views: 4242

Re: Meet Ups in VA and MD

Some potential travel plans to help war planning next year: - Will be in MD some time from late December to early January. - My planned class schedule for the spring semester is Tu/Thu. I will not be certain what my teaching obligations will look like, but I intend to keep them focused at the beginn...
by SSCBen
Sat Oct 15, 2016 11:07 pm
Forum: Water Wars
Topic: Frozen Fury/or other War
Replies: 37
Views: 3891

Re: Frozen Fury/or other War

Texas, extreme hot? Maybe just hot with extreme humidity. AZ is extreme hot. It's still 95 today (low of 60), which is just beautiful! I see your point. The humidity depends on how close you are to the coast. Here in Austin near the center of Texas the humidity can vary a lot. Houston is a swamp. W...
by SSCBen
Fri Oct 14, 2016 12:37 am
Forum: Water Wars
Topic: Frozen Fury/or other War
Replies: 37
Views: 3891

Re: Frozen Fury/or other War

Sorry to hear about the weather. Where are you getting the long range forecast? NWS? I'd guess it's too early to call anything very definitively, but I could be wrong. Texas still seems like summer... but then again, summers here are basically the worst days on the east coast stretched out over 4 mo...
by SSCBen
Wed Sep 21, 2016 10:40 pm
Forum: Homemades
Topic: My CPH just shot over 70 Ft!
Replies: 18
Views: 2954

Re: My CPH just shot over 70 Ft!

The brass nozzle McMaster-Carr sells is cast, and very rough on the inside. I bought one around 10 years ago and was disappointed.