@Gun Freak
thanks

@MrCrowley
i didn't know what keywords to look for, mainly due to some degree of language barrier and the massive size of your forums.

even if i did stumble upon that thread, there are 11 pages of mostly personal comments. plus, i want to know of a machine shop that is canada ...

Hey,

Do any of you guys know of a workshop where I can send plans to receive machined parts in Canada?

I'd like to bring my canon to the next level

Thanks,
alex

although the front sight might get in the way when feeding potatoes. or not if i use another tube at load time...

i'll give it a try in balsa wood!

i'm done with the project. finally.

i went the original aluminum tube, worked out an electrical ignition system fully mounted inside the back of the wooden handle. AAA battery is accessible under the tape. wires go through the frame as well.

here's a picture

any ideas on working out the sight?

Sure, there are some in my previous post
http://www.spudfiles.com/forums/viewtopic,p,316924.html

Would it keep those problems from happening if I injected hot glue once in the handle of the canon?

The transformer is buried under a solid centimeter of plastic...it's a pain to reach

it is too bulky to fit in the wooden handle

Thanks for the replies, I needed to confirm the capacitor was the only concern

I'm dismantling an electric BBQ igniter so I can fit it in the wooden handle of my spud gun.

I'm both ignorant and the biggest wuss when it comes to electricity. Could you help me dismantle this without shocking myself? I mean, is there any danger from the transformer or is shorting the capacitor ...

Oh here's an idea of the soon to be final product.

Any suggestion on how I deal with the fixation of the canon to the handle,the loading mechanism and specially how I deal with failed launches? I thought not gluing the bottom and adding a hinge joint to allow breach loading like the original m79.

I've been mixing different ratios and eventually decided that my long and narrow combustion chamber coupled with no bore was simply wrong.

So I went a little creative. I still wanted a straight look to get a good M79 feeling. Here's the idea, I used a 2" pipe to contain a 1.25" pipe using a ...

Thanks to all of you for the help and positive comments

Judging by the numbers given by the above soft, it won't be a powerful model but at least it should win some esthetic points at the contest! I'll do the painting soon and post some new pictures.

Alex

Also, when sticking a piezo at the bottom, no spark can ignite the mixture. An open flame will successfully ignite it though.


Edit by Moderator (MrCrowley): There was a double post merged here but I got an error when I tried to amend the changes and lost the merged double post.

This is my first attempt at making a potato cannon. Esthetically, it's coming up nicely. What I'm having trouble with is the combustion. I understand the chamber is rather small and would not provide very much power, but I'm failing to even get a popping noise.

If I fill the tube with lighter ...