HYBRID FUELING 101
- daberno123
- Corporal
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Wow, it finally clicked in my mind after a few reads and now i get it.
I vote for the sticky and the wiki
I vote for the sticky and the wiki
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:45 pm, edited 1 time in total.
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Yeah you get my vote for a sticky, hopefully it will help out people that are new to Hybrids. Cheers Spudblaster.
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
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- First Sergeant 3
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:45 pm, edited 1 time in total.
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All i do is use X amount of fuel (roughly calculated) and then increase or decrease the amount of fuel until i acheive the loudest bang! I am sure your way is a lot more accurate though.
I have never made a fuel meter as i don't see it being worth the trouble if i can get away with using a syringe, it makes a launcher look cleaner without one too. The only advantage for me would be faster reloading times.
What i meant about helping people new to Hybrids was that if stickied they could find the info faster rather than having to look through a pile of threads.
I never realised that people had been incorrectly fueling their Hybrids though, goes to show that we learn something everyday
I have never made a fuel meter as i don't see it being worth the trouble if i can get away with using a syringe, it makes a launcher look cleaner without one too. The only advantage for me would be faster reloading times.
What i meant about helping people new to Hybrids was that if stickied they could find the info faster rather than having to look through a pile of threads.
I never realised that people had been incorrectly fueling their Hybrids though, goes to show that we learn something everyday
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
Well thanks DYI for answering my question, and by the way SB15, you still havent answered my other questions pertaining to the pressure that will be produced in the meter for a certain mix. Is it in bars?
And i asked that because i was making a program, as i mentioned in another thread, so that i can easily calculate this in the future, so sorry if i hurt your head by making it slam to hard, i just dont want mistakes and i didnt quite understand completely some of your variable representation. Hope it wasnt something like this.
And i asked that because i was making a program, as i mentioned in another thread, so that i can easily calculate this in the future, so sorry if i hurt your head by making it slam to hard, i just dont want mistakes and i didnt quite understand completely some of your variable representation. Hope it wasnt something like this.
4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:45 pm, edited 1 time in total.
- Fnord
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Hmm.
I just did the formula and found the optimal 6x figure is ~112 psi in my 1.8 ci meter, which is only 4 psi higher than what I've been running it at.
When I finish the second version of my hybrid, I found the optimal 1x mixture by finding the upper and lower explosive limits at 1x, making these into percentages and finding 4.2 base on those numbers(it ended up at 18 psi).
Then I just multiplied by the mix number and went from there.
Unless I did something in the equation wrong.
C volume: (somewhere around) 41 ci
M volume: 1.8 ci
Edit: Freeze frame!! :)
Gah... when I fired it with my mouth open I felt a concussion wave in my lungs.. weird but pretty cool.
I just did the formula and found the optimal 6x figure is ~112 psi in my 1.8 ci meter, which is only 4 psi higher than what I've been running it at.
When I finish the second version of my hybrid, I found the optimal 1x mixture by finding the upper and lower explosive limits at 1x, making these into percentages and finding 4.2 base on those numbers(it ended up at 18 psi).
Then I just multiplied by the mix number and went from there.
Unless I did something in the equation wrong.
C volume: (somewhere around) 41 ci
M volume: 1.8 ci
Edit: Freeze frame!! :)
Gah... when I fired it with my mouth open I felt a concussion wave in my lungs.. weird but pretty cool.
- Attachments
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- look at the base of the flash compared to the end of the barrel. Oh I got a compressor for the hybrid working by the way :)
The chamber fan seems to be creating a mildly noticeable increase in noise, at least with the blank shots I've done. - hybrid1.jpg (17.44 KiB) Viewed 24858 times
- look at the base of the flash compared to the end of the barrel. Oh I got a compressor for the hybrid working by the way :)
Last edited by Fnord on Wed Mar 19, 2008 3:17 pm, edited 1 time in total.
Yep, you did something wrong. The whole point of this topic was actually to correct that problemThen I just multiplied by the mix number and went from there.
Anyway, it's good to see that you got a fan installed in it. That's quite an interesting muzzle flash you've got there. I imagine that it would be (relatively) small and blue if the mix was perfect, and I look forward to trying my prototype hybrid at night to find out.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
Glad to see the first post corrected. Kind of interesting that this thread was first made because SB15 though I was doing my calculations wrong, only to find out that I was actually right all along - 0.644psi/x for propane.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
Did I calculated right? My chamber is 0.5l and Im gonna use 4x mix so if I have 1x mix that is same as normal combustion cannon, I need 0.479l air and 0.021l propane, then 4x mix, 0.479x4=1.916 air and 0.021x4=0.084l propane?
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