Search found 191 matches

by Drenchenator
Thu Oct 25, 2018 10:54 pm
Forum: Homemades
Topic: APH Design Questions
Replies: 14
Views: 1130

Re: APH Design Questions

I think the internal diameter matters more for performance that the chamber diameter. Certainly 4" diameter PCs hold a lot more water, but I don't think they would perform much better on their own. If your gun is designed purely for range and output, you should use the biggest PCs you can buy. But m...
by Drenchenator
Wed Sep 19, 2018 11:28 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

That is exactly the kind of nozzle most homemades need. Thanks for posting the link and photo, Tim! I knew I saw some other nozzles out there but I couldn't find the thread at the time. This thread should be a good reference for people who would want to build one of these pump-action designs.
by Drenchenator
Sat Sep 15, 2018 12:12 am
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

Hmm, I seem to remember the roughness now. The interior surface has large jagged elements sticking out. I thought that I would cut myself if I touched it. I don't recommend that part in retrospect. It seems that McMaster has categories for both "fire hose nozzles" and "garden hose nozzles." The part...
by Drenchenator
Fri Sep 14, 2018 12:49 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

I was thinking about the 1-inch diameter nozzles like parts 6484T15 or 6484T22. These won't work in your design because you used 1/2-inch pipe for the nozzle section, but if you used 1-inch pipe this would work. These nozzles have an opening of 5/16-inch, which seems to be roughly optimal just based...
by Drenchenator
Sun Sep 09, 2018 11:22 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

I may try to build a "pump-action" design next summer. At the moment, I don't have the time, but your results have definitely gotten my interest. I think as a community we have tended to concentrate on the higher end of performance (not that that's bad!). We've neglected these simpler designs, and t...
by Drenchenator
Sat Sep 08, 2018 10:31 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

Good job! I'm glad that you're the first to build a design like this. I've been thinking the last few weeks that people (well, I at least) have been building designs that are just too complicated. I admire this design's simplicity. It's basically the APH design with a larger pump and no pressure cha...
by Drenchenator
Mon Sep 03, 2018 11:59 pm
Forum: Maintenance & Repairs
Topic: CPS 2000 vs 2500 questions
Replies: 13
Views: 1390

Re: CPS 2000 vs 2500 questions

I have in fact, replaced a spring inside of a check valve on this CPS 1500 . Wow, great job! I love the photos. I always wondered what the stock check valves looked like inside. I agree replacing the spring should be a last resort provided nothing else worked, but I'm glad that you've documented th...
by Drenchenator
Mon Sep 03, 2018 11:17 am
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

Sometimes different check valves are at different stores. Every kind of check valve under the sun is available online at McMaster-Carr if that's an option for you. If 1/2" is too difficult to find, I'd suggest looking for larger sizes if possible. It would also be good to check the aisles for metal ...
by Drenchenator
Mon Aug 27, 2018 7:39 pm
Forum: Water Blasters
Topic: Favorite Firing Valve Design?
Replies: 11
Views: 1094

Re: Favorite Firing Valve Design?

Well, I can speculate as to how the check valve opens and closes. We can see in second photo under "Build and Ergonomics" that the valve does have a coil spring. My best guess is that this spring keeps the valve open. The question then becomes how does the valve close. Another guess is that when the...
by Drenchenator
Mon Aug 27, 2018 12:05 pm
Forum: Water Wars
Topic: Autumn Invitational War
Replies: 36
Views: 2745

Re: Autumn Invitational War

I'm open to it, but the only times that I'm back on the east coast are the weekends of December 22nd and December 29th (weather permitting).
by Drenchenator
Mon Aug 27, 2018 11:26 am
Forum: Water Blasters
Topic: Favorite Firing Valve Design?
Replies: 11
Views: 1094

Re: Favorite Firing Valve Design?

I'm only going based on the pictures provided by iSoaker's review . It appears that the valve is just a rudimentary check valve that opens when the pump is fully extended. Without a picture of the internals I can't comment on the physical mechanism of levers/gears/etc. that achieves that goal, but t...
by Drenchenator
Sun Aug 26, 2018 6:10 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

Good job! This is the first time I've seen somebody attempt a gun like this. The second check valve will make the pump fill much more easily but it also may decrease the performance a bit. It obstructs the flow slightly, so if you do put it in you should be aware of that. I'd say that the range for ...
by Drenchenator
Fri Aug 24, 2018 2:30 pm
Forum: Homemades
Topic: Homemade pump action designs?
Replies: 21
Views: 1863

Re: Homemade pump action designs?

I can't recall anyone building a pump-action water gun, but many people have built "stream machine" style guns. Take this gun , for example. The principle is that same --- the faster you pump, the faster water gets shot out --- but usually people fill them by pulling water out of a lake or other lar...
by Drenchenator
Tue Aug 14, 2018 11:59 am
Forum: Maintenance & Repairs
Topic: CPS 2000 vs 2500 questions
Replies: 13
Views: 1390

Re: CPS 2000 vs 2500 questions

If the problem is the check valve, there seems to be little that you can do. It might be sluggish due to the spring inside losing elasticity, so it would require a greater force to open (more force needed to compress it the same amount). I don't think anyone has tried to replace the springs inside t...
by Drenchenator
Tue Aug 14, 2018 8:03 am
Forum: Water Blasters
Topic: Favorite Firing Valve Design?
Replies: 11
Views: 1094

Re: Favorite Firing Valve Design?

This is an interesting question because it involves tradeoffs between ease of use and performance. The answer depends on who is asking the question. A ball valve will perform the best since it generates the least turbulence, but a pull valve is much easier to use since it will open and close quickly...
by Drenchenator
Thu May 17, 2018 10:28 pm
Forum: Water Wars
Topic: 2018 WWN League Season Opener
Replies: 57
Views: 4688

Re: 2018 WWN League Season Opener

Great write ups, Marauder and Seal! Sounds like it was a great battle! I wish I was there rather than working on my propulsion class homework at the time. The heat kinda sucks I guess, or it was totally appropriate for a water gun fight. I can't decide. It's really good to hear that good battles are...
by Drenchenator
Sun May 06, 2018 1:33 pm
Forum: Water Blasters
Topic: 2018 Water Warriors/BBT Blasters
Replies: 23
Views: 2390

Re: 2018 Water Warriors/BBT Blasters

There's some pretty good discussion here. It's always interesting to get more information about the business side of things. I admit I don't pay a lot of attention to it but it's important to know nonetheless. In terms of the idea of selling at a loss to increase activity, that only works when you h...
by Drenchenator
Sun Apr 22, 2018 1:34 pm
Forum: Water Blasters
Topic: 2018 Water Warriors/BBT Blasters
Replies: 23
Views: 2390

Re: 2018 Water Warriors/BBT Blasters

Yeah, none of this is inspiring much confidence in BBT at the moment, to be frank. Given that a lot of patents have expired I'm rather perplexed as to why nobody is using them, but the answer is probably simple. Nobody cares to use them. They likely won't make much more money if they did start to us...
by Drenchenator
Thu Apr 19, 2018 10:12 am
Forum: Water Wars
Topic: Water Storage????????
Replies: 7
Views: 1047

Re: Water Storage????????

How much water do you need? If it's over 50 gallons, I'd actually say that buckets are the best bet. 5 gallon (20 L) buckets are readily available at hardware and home improvement stores (even Walmart), though you should get lids obviously. If you have a truck, you can also fill a small kiddie pool ...
by Drenchenator
Tue Apr 17, 2018 11:26 am
Forum: Water Blasters
Topic: Spyra One
Replies: 55
Views: 4952

Re: Spyra One

Thanks for sharing the photo! The look of this new mockup definitely is sleeker and should be better balanced than the older design. I appreciate that you took a photo of somebody holding it, because it's easy to lose perspective from CAD renderings (I know it's happened to me before). I actually li...