Sam's Hybrid Plans H.V.S-1

[spanerman]

Well heres my plans, the chamber is a 6inch long 1.5inch pipe nipple...it has a meterd propane injection system, a HVSG and spark plug ignition and i hop to run it at a 5x mix.....ooooo that Should be supersonic..everything is steel apart from the barrel which is 15mm copper....which is the only thing il be woried about failing.



it will be mounted on some plywood. This cannon is only a test bed for my futre plans....i have some 60mm stainless pipe.......ooooo and i can get it welded...think mach 2. but thats a few years away i think

would a bbq sparker with a tiny gap (~1mm) work with a 5x hybrid? anyone?

and another question...roughtly what pressure of propanr am i goin to need? as im goin to be using a large tank and im unsure iff i can take a direct tap feed from the tank to the regualator...so i may have to use a regulator with fixed output and a fariable output regulator to make it the ideal pressure for the meter?

[CannonBall]

Dude that isn't you own design you just copied it.....
Plzz give credit to tylerthetatertosser cause its exactly the same..
AS for your calculation try it yourself first than ask somebody else..

[spanerman]

imatation is the upmost form of flattery my friend! i have improves upon his design as i will be using a regulator for ease of use... and i will be using a different sparker so its not exactly the same...does every person who makes a inline sprinkle valve pneumatic pay creddit to the first? no! and BTW i have tried the calculations and tied myself in knots so i then asked, tylerthetatertosser what pressure of propane are you useing per ATM of air? and is it possible to use butane in a hybrid? what is the optimum mix for butane?

[CannonBall]

WOOOOOOOOOOOO a regulater what an inprovement.. its more easy to work with. nothing more nothing less..
Its not about small copies.. like the sprinkler valve.... but dude to copie a whole gun that's crap
And for propane pressure.. post your cubic inches of your chamber otherwise nobody can calculate...
Measure volume with water..

[spanerman]

also alot of the sizes are different! i was unawer that, useing the meter tube as a air input aswell was that big of a deal and this gun(as sated above) is just to test the meter system as ive never played with hybrid before, for a larger launcher, i liked this congiuration so i emulated it...now please shut up and iff you have nothing constructive to say, dont say anything

[CannonBall]

I did say some thing constructive.. post your chamber volume otherwise a calculation is impossible..
if u wanna tap the plug in buy a tap size m14 x 1.25 otherwise weld
You say to me... say something constructive



spanerman Posted: Today at 11:23 AM Post subject:


Staff Sergeant



Joined: 17 Sep 2006
Posts: 125
205.16 Spud Bux

yaay, im starting mine tomoro:)

Like that is a usefull post in my thread....

[spanerman]

it wasnt destructive was it !! it wasnt an atack on you, it was a meer thanx to the guy above me who helped me out...now please grow up and help if your goin to help...youve made 2 posts in my thread and havent anserd any of my questions now whos making un needed posts??

on the volume front, looks like il have to buy it and find out..

[SpudBlaster15]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

[DYI]

You said that this hybrid will be all steel. Where do you plan on getting steel fittings? They are never sold at any hardware stores where I live. Hardware stores mostly just sell galvanised malleable iron fittings, which are only rated for 150 psi, although they have been used successfully in many hybrids. Actual steel fittings are rated for either 3000 or 6000psi, and are usually only available from industrial suppliers. The first thing to fail on this design would be the iron fittings, which are only rated for about 1/4 of the pressure that your barrel is. The barrel will probably be fine.

[CannonBall]

I am helping you cant you see.. if given you the right tap size .. and believe its not easy to find the size or find the tap at all get it at a car depot
as I sayd give me the chamber volume... im good at calculations 8)
and you dont need a stungun a regular bbg igniter does the job aswell... its saver to 8)
put the spark plug diode at 0.35 that does the job

[spanerman]

why thank you SB15, very much apriciated, very nice idea btw. what pressure of propane are you useing for every ATM added?

[frankrede]

4.7%, if you don't know that by now, I sure as hell don't trust you with a hybrid/

[spanerman]

You said that this hybrid will be all steel. Where do you plan on getting steel fittings? They are never sold at any hardware stores where I live. Hardware stores mostly just sell galvanised malleable iron fittings, which are only rated for 150 psi, although they have been used successfully in many hybrids. Actual steel fittings are rated for either 3000 or 6000psi, and are usually only available from industrial suppliers. The first thing to fail on this design would be the iron fittings, which are only rated for about 1/4 of the pressure that your barrel is. The barrel will probably be fine.

ive had copper burst at 300psi...and ive tested the malleable iron/steel fittings to over 400....so i belive i will be safe with a 5x mix

Frank..ive never seen butane used only propane...maybe its because its been a year or so since ive made a combustion...or even looked through combustion forums....just to let you know ive made over 8 pneumatics and 4 combustions so i belive that i am redy for a hybrid....

and cannon, im goin to use remote ignition now whicj is hard to do with a BBQ ignitor...

[SpudBlaster15]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

[spanerman]

all the parts arew from Pipe Center which is a trade counter in the uk..im pretty sure it isnt soft iron...with any luck il be ordering the ignition..buying the sparkplau..and buying the metering system tomoro
andthe chamber and union next week and the propane, regulator and pressure guage the weekd after:) cant wait....