Search found 11 matches

by rcbif
Thu Dec 01, 2011 1:13 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Well I lost interest in this project for a while due to some unfortunate design change realizations. But it's back in progress now so I can get this thing off my workbench and working, or atleast hanging from my bedroom wall Main change is that it is no longer break action. It was just too finicky w...
by rcbif
Sun Jul 03, 2011 10:16 am
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Project is still in the works, but no longer a replica. Due to tooling available, and working with wood (less than precise), and stresses, I decided not to do a break action. I think however, my new solution would be an actual improvement to the real m9 though. Updates coming soon.........
by rcbif
Fri May 20, 2011 2:35 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Sad day :( Got home from work all excited to play with my launcher tube and try out my new igniter. Got a few one-click shots in, before the launcher flew out of my hands and the new BBQ igniter broke apart. Lost the inner parts in the grass and had no luck finding them. :( There's 10 bucks down the...
by rcbif
Thu May 19, 2011 6:56 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

A small update...... Some more work on the receiver, rounding/chamfering it down to meet the stock size. And also installed the "Bang Button". Drilling that hole was pretty scary, but it turned out alright. I'll find some way to dress up/ hide the threaded area of the bang button. It was a bit bigge...
by rcbif
Wed May 18, 2011 6:51 pm
Forum: Combustion Cannons
Topic: Sparker Reference Guide
Replies: 44
Views: 42553

Question......

Can anybody give me the dimensions of the common BBQ grill ignition shown on page 1 ? More specifically, the overall length, threaded portion diameter, and the length from backing plate (wide diameter part button next to button) to end tip? Thanks!
by rcbif
Mon May 16, 2011 2:31 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Gaderelguitarist wrote:Thats looking really great. I just don't remember suggesting working on the foregrip. I mentioned the contours of the stock. :lol:
ah, ya misunderstood you. In either case, both needed done.
by rcbif
Sun May 15, 2011 2:52 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Got some work on the receiver today. Making a wooden receiver :lol: Had a bad feeling starting off on my wooden receiver, but I'm feeling a bit better about it at the end of the day. Also did some work on the front hand guard as suggested by Gaderelguitarist. 3 main sections cut out. http://i53.tiny...
by rcbif
Sat May 14, 2011 8:13 am
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

Combustion will not generate more than 100 psi, so no need for a high/low pressure system - because it's already starting out at low pressure ;) This is interesting, because my tests showed about a 40% increase in distance with the high-low set-up. There was also a significant recoil and noise diff...
by rcbif
Fri May 13, 2011 9:28 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

And if you have a belt sander, it wouldn't be too much extra effort to deepen the contours of the stock. The reference picture shows a bit more of a gradual round-over on the upper portion, especially around where you hand must grab. Ya, I was just looking at that. I'll probably try to make a templ...
by rcbif
Fri May 13, 2011 7:52 pm
Forum: Combustion Cannons
Topic: M79 Grenade Launcher SpudGun Project
Replies: 31
Views: 9742

M79 Grenade Launcher SpudGun Project

Well it all started here............. http://www.sksboards.com/smf/index.php?topic=87163.0 Well that was just a little one weekend project. It was a fun little toy for the first few shots, but now I want something bigger and with more firepower http://i53.tinypic.com/3023ltt.jpg (google reference pi...
by rcbif
Thu May 12, 2011 4:06 pm
Forum: Combustion Cannons
Topic: Drilling into the pressure chamber?
Replies: 5
Views: 584

Drilling into the pressure chamber?

Hey guys, new here. Got a question........... Working on a combustion spud gun with a 1:1 C:B ratio. The chamber is also the same dia. as the barrel. It is not meant to be a super high performance spud gun and is achieving the results I want. My question is this........ Is it ok to drill into the pr...