Search found 11 matches
- Fri May 21, 2010 8:01 pm
- Forum: Combustion Cannons
- Topic: Meter pipe pressure - Propane vs MAPP
- Replies: 9
- Views: 2882
Well, I went with 80 PSI - and it worked just fine. I had just assumed MAPP was a bit more intense - that's why I changed over. It's good to know ole' propane works just as well. Thanks for the help. Here's a link to my finished cannon, in case you didn't see it. http://www.spudfiles.com/forums/late...
- Thu May 20, 2010 9:30 pm
- Forum: Combustion Cannons
- Topic: Latest Apple Cannon
- Replies: 12
- Views: 4952
Very nice looking hand held. The small apple graphic in the paint job is a nice touch. I'll have to remember to do that. Have you been able to test it's range yet? Thanks. I don't have enough open space to really measure it - but it flung an 8 oz water bottle straight up in the air for 10.5 sec of ...
- Thu May 20, 2010 9:21 pm
- Forum: Combustion Cannons
- Topic: Latest Apple Cannon
- Replies: 12
- Views: 4952
Do you have to have apples that fit the barrel, or can you use over-sized ones and just shove them in? Around here, you can buy "snack apples" that are almost perfectly round, and fit quite tightly in the barrel without any cutting. I have a small slice of 2.5" PVC that I bring to the store for gau...
- Thu May 20, 2010 9:18 pm
- Forum: Combustion Cannons
- Topic: Latest Apple Cannon
- Replies: 12
- Views: 4952
Looks a little heavy but otherwise nice looking and well put together. The only thing I would seriously replace is the drain plug rear end...that thing's going to blow out on you sooner or later. Until then, be sure everything is clear directly behind this cannon when firing it. Yes - it's very hea...
- Wed May 19, 2010 10:01 pm
- Forum: Combustion Cannons
- Topic: Latest Apple Cannon
- Replies: 12
- Views: 4952
Latest Apple Cannon
For the past 4-5 years, I've built some sort of potato/tennis ball/etc. launcher just as a goof. This year I decided to convert it to MAPP gas and make it handheld. http://lh6.ggpht.com/_GQdyUFyhQC8/S_MhEOAasKI/AAAAAAAAAXY/f0y86jCimeI/s912/IMG_3231.JPG The finished product. http://lh6.ggpht.com/_GQd...
- Wed May 19, 2010 8:38 pm
- Forum: Combustion Cannons
- Topic: Meter pipe pressure - Propane vs MAPP
- Replies: 9
- Views: 2882
Propane operates at 4.2% and MAPP operates at 4.6%. Since you already have a meter, I can assume that you already know the math to do the rest, right? Thanks. Maybe! 3200cc x .046 = 147 = ??? psi? I got a D in Physics and switched to Communications. I need help. :? The thought was to get a little m...
- Tue May 18, 2010 6:09 pm
- Forum: Combustion Cannons
- Topic: Meter pipe pressure - Propane vs MAPP
- Replies: 9
- Views: 2882
Meter pipe pressure - Propane vs MAPP
I'm switching to MAPP fro Propane. Typically, I run about 75 PSI through my 3/8" 6" meter pipe with propane. Any pointers on what PSI I might run MAPP gas?
Thanks. Sorry if this has been asked before - I didn't see much in the search.
Thanks. Sorry if this has been asked before - I didn't see much in the search.
- Fri Jul 13, 2007 2:44 pm
- Forum: Ammo & Parts
- Topic: 2.5" PVC to 2" threaded male adapter - more elegan
- Replies: 11
- Views: 5865
- Fri Jul 13, 2007 2:13 pm
- Forum: Ammo & Parts
- Topic: 2.5" PVC to 2" threaded male adapter - more elegan
- Replies: 11
- Views: 5865
- Thu Jul 12, 2007 11:20 am
- Forum: Ammo & Parts
- Topic: 2.5" PVC to 2" threaded male adapter - more elegan
- Replies: 11
- Views: 5865
- Thu Jul 12, 2007 8:26 am
- Forum: Ammo & Parts
- Topic: 2.5" PVC to 2" threaded male adapter - more elegan
- Replies: 11
- Views: 5865
2.5" PVC to 2" threaded male adapter - more elegan
Hey everyone - just transferred over from Spudtech. Sad to see they're more or less closing down. I just found a length of 2.5" PVC - no small feat in this town. I need to attach it to a 2" threaded male adapter. I've seen pics of a coupler glued onto the end and the 2" male threaded adapter glued i...