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pneumatics vs combustion

A place to ask general spud cannon related questions.
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Unread postAuthor: Rambo » Thu Jan 19, 2006 4:51 pm

The combustins are lot easer for tuning. :) I like to over boost things.The noise is a real problem where i live.I thing that the crutial thing about the pneumatics is not the presure but the valve-wich is expensive.
8) Solid fuel rules.
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Unread postAuthor: sgt pauley » Thu Jan 19, 2006 6:59 pm

Noise is no matter here, the thing i need is for folks to email me directly cuz i can`t figure out how to use this forum to download pic`s. I`ve tried but it just won`t do it. I have a real 60 mm mortar Spanish model 51 it`s BATF approved and i have a guy thats gonna build me the right Bi-pod and just use my "T" -devise and move the "E" devise from front to bottom. The thing is i found a really cool warhead but it`s expensive. So i`m going to try and ge a local plastic molding company to make these for me and promote their Co. in the field. They blow up so you can only use it once so i need a couple hundred and don`t want to spend over 3-4.00 a round. The problem with making a gas chamber and it would`nt be hard to weld on just keep the tube straight. Now said that have to think there has to be a wad over top the chamber holes and the (lit ) round you would drop strike the flint and it`ll go. Right now i`m using estee`s rockets just because i use the motors to ignite the fuse running from the motor to the Warhead. The way it will work is 15 ft over top the ground Boom! I put powder in with it to for effect also there`s other mixtures one can make for an effect. Also it dampens the blast and the warhead is like the soft pplastic, in the hobby we use those kid`s drinks "Huggies" like a punch drink ,anyways we put powder in it then a 35 mm film canister and a fuse out the top, light it and toss it at the Jerry`s !! The loads like a strong M-80 but no shrapnel can`t have that .Anyhow my email once again is charles_pauley2@yahoo.com so email me if you want to look at the mortar and rounds(proto-types) Well thanx for the idea`s on propelant i already know how to make the different loads just need people to look at what i have and bounce idea`s around???? Alright thanx again Carry on gents contact me via the email addy and i`ll send you some really cool photo`s :) Best regards, S.SGT Pauley
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Unread postAuthor: beebs111 » Thu Jan 19, 2006 7:25 pm

rambo, solid fuel does not rule, it sucks and is dangerous, and sgt pauly please dont go about making "warheads" it could injure people and will give spudding a bad name when everyone sees the news report about you blowing both your legs off. :shock: play it safe and dont be retarted :?
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Unread postAuthor: sgt pauley » Thu Jan 19, 2006 9:38 pm

Beebs, Have you ever done any reenacting ? WWII with heavy weapons events ? Granades that we use like i posted a while ago are a very soft plastic, when it pops it tears instead of sending fragmentation everywhere. The pastic is very soft and as i said we have a moulding company here where I live. This is something that i have to get to work the same way 95% of the time as far as the warhead goes, plus as i said we use dampeners. Not to gloat but i was 18 charlie -03 for a short time before that i was 11 bravo & 11 mike(bradley fighting vehicles) I was wounded during the 1st gulf war and the effect did`nt show up untill I was SF on my 1st ODA 2 months into it, i fall out with sezuires No more boom,boom for Pauleyson! No i`m not one to toss or shoot (mortar) at anyone unless i`m willing to take the same ya know? Up at Odessa Ny was wide open night fighting armour vehicles mg`s, nades, bazooka`s,mortars. The construction is very light weight if i can use foam that`s what i would like to use. My main goal here is how to propell these rounds outta the tube ??? I can charge and ground the bottom of the tube when the motor round hit`s it it`s gone !! Anyhow how the hell do you post pics??? I can`t get it to download, wants to but won`t ? That`s why i gave my email so maybe someone could look at what i`ve got here ? Anyhow no not gonna crack no skulls I like to have fun not maiming cat`s ! lol Best regards, S.SGT Pauley (i was an E-6 promotable when i got out in 98 was`nt doing the desk thing no way in hell ! was 3rd I.D then 4th then 75th/3 batt. after i got sick was 1st batt. back at Benning( Rangers) then ended up back at Ft Carson again with the 4th but with the same infantry regiment i served with in the 3rd in 91! lol they moved to Ft. Carson:P Later on
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Unread postAuthor: beebs111 » Sat Jan 21, 2006 10:00 am

ok ok i misread your post and thought you were doing this for just recreation?? no i havent done any reenacting, but i was picturin a 2 yearold launching exploding shells into his nebiourgs yard :lol: :shock: but just play it safe dont kill anything, and have fun :D
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Unread postAuthor: darkpyro » Mon Jan 23, 2006 11:55 pm

hay anyone what do you think is the power difference between right gaurd and propane which one is more powerful and by how much :?:
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Unread postAuthor: CS » Tue Jan 24, 2006 2:03 am

Propane is proably is more powerful. Even if Right Guard was more powerful, it would be outweighed by the cosistency of propane. Although I dont have any numbers backing me up, I think it would be alright to assume.
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Unread postAuthor: Lucas_Pukas » Tue Jan 24, 2006 2:42 am

pimpmann22 wrote:Propane is proably is more powerful. Even if Right Guard was more powerful, it would be outweighed by the cosistency of propane. Although I dont have any numbers backing me up, I think it would be alright to assume.


I agree. However, I have yet to build a propane combustion gun. It seems though that just by the comparison, propane would have more power. I mean, using something you use to light your BBQ grill compared to deoderant you spray on...I'd say propane. But I don't know...
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Unread postAuthor: darkpyro » Tue Jan 24, 2006 4:15 am

yeah by the sound of it propane is more powerful and i hear its very clean burning no residue what so ever is that true.
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Unread postAuthor: sgt pauley » Tue Jan 24, 2006 10:04 am

I know in the reenactment community we use propane in the cannons and i see alot of the M.G.`s using propane, like the M.G. -34 mounted on a German mototrcycle. Looks cool but most of us use blanks in our weapons. As far as how clean it is, no idea, but i do remember when i was making tater guns when i was a kid, i remember hairspray can`t remember which brand but it worked well and it did leave a sticky icky on the inside. I think BBQ lighters are silly i don`t know why i have`nt seen a very good electronic ignigtion ? ould`nt take much i would think? There a ton of things one could use, like for myself i have a real 60 mm mortar, and i would prefer to use some type of hidden electronic ignition maybe mounted on the bottom side and a line running into say a 1945 cargo bag with an ignition switch in there? We`re thinking about using a spark plug for moine but remember what i have will take on helluva WHUMP!! All steel and bronze design is what i have is made of. Anyone here can tell me how to post a picture of my mortar on this web site? Would love for you guy`s to see what i have :) ! You guy`s would kill to have something like this since your hobby/trade is tater guns( sorry that`s a southern thing :) tater ) alot of the purists in my hobby don`t like the M.G.`s to use those i can`t ever recall a picture of a German with a propane tank near his M.G.`s ? Like i said though the heavy weaponery no one minds. Anthow just a though? If ya`ll know how to post a pic, please let me know would love to show you all my mortar, best regards, Pauley
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Unread postAuthor: frankrede » Wed Jul 26, 2006 9:45 pm

Firemaker68 wrote:yeah i agree with julz on the point that my pneumatic takes about 3 minutes to preasurize where as my combustion takes about 7 seconds.... with that said i still like the phneumatic better because a potato shot 100 yards beats one shot only 65 yards any day of the week!

3 minutes!wow it takes me 20 seconds.
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Unread postAuthor: singularity » Thu Jul 27, 2006 12:18 am

when you compare a basic pneumatics and basic combustions... pneumatics are more realiable (it really sucks when you have all your friends watching you and click the bbq ignitor and theres BOOM), combustions go BOOM (every body likes stuff that goes BOOM), pneumatics have more power, basic combustions are a bit simpler, and they both have abouth the same fire rate (assuming you have a compresser) pneumatics are quiter

when you compare advanced combustions and pneumatics... they both have the same realibilty, the pnuematics are still more powerful, most advanced spudguns have some form of breach loader (i have evan seen some semi auto pnuematics) but in most cases pneumatics have higher fire rates, the pnuematics are quiter

evan though pneumatics have more power the BOOM is a very important aspect so i have to go with combustions
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Unread postAuthor: pyrogeek » Thu Jul 27, 2006 1:05 am

Pneumatics are more powerful, I shot a paintball at a thin peice of sheet metal and left a 3/4in dent at like 100 PSI. It recharges really fast from the compressor, so my rate of fire is limited to how fast I can push the paintballs down the barrel (no breech loading modification yet). It is very clean looking, just the inlet on one end, and the modded sprinkler valve on the other. But, it sucks I'm tied down to the compressor.
The combustion is very portable (in theory, but it is very bulky with its 24inch chamber plus the barrel. I'm going to make an over-under adapter soon to remedy this though). Very simple, and just as reliable as the pneumatic since it has propane injection and dual sparks powered by a stun gun. Quick to load, except for airing out. Mine isn't very clean looking though, since it is just a lot more complex than the pneumatic.

I really don't have a favorite I guess, each has their own advantage. But, am partial to the combustion, I like the complex look of it, and the portability.
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Unread postAuthor: Flying_Salt » Sat Oct 21, 2006 12:03 am

So far I only have my combustion, and I think I'll make a pneumatic mini later. I used hairspray snd had to scrub it out pretty good...
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Unread postAuthor: joannaardway » Sat Oct 21, 2006 1:56 pm

I don't really want to get into this debate too much, but I prefer pneumatics, because I don't have to pay for the gas (in whatever form).

And regardless how cheap it is, I'd rather be storing a bike pump or compressor than a bottle of liquified, pressurised, poisonous and flammable gas.

And of course, pneumatics are more easily controlled and reliable.

evan though pneumatics have more power the BOOM is a very important aspect so i have to go with combustions

You should hear the bang from a good piston valved pneumatic. A good combustion shouldn't really be going "BOOM" either.
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