I don't want a rock crawler.... Too friggen slow. Yes, their ability to climb rocks is amazing... But seriously, who wants to stand next to their rock crawler and watch it go up rocks that you could easily climb yourself? (And I would rather do so.) I like the speed and agility of the other ...

i have a trxxas revo 2.5r
but i upgraded the motor from a .15 to a .26 fast as F... about 45mpr

i don't know much about soldering....

but i know you can't weld different metals together. so am thinking no you cant solder them together. but again i don't know much about soldering

to me it does not seen like i need to redo this cannon.
and yes i can get the PVC for $15.

the PVC chamber wall is sch 40 pretty not thin if u ask me.
yes i also know that smaller does not mean weaker.

yes i have also looked for PVC online.
but i can find pvc around where i live.

don't worry starman
i know i always try to get the pressure rated stuff. but sometimes they just don't have everything i need pressure rated.

thanks 88pathoffroad

thats good to know, i have not fired a potato out of mine, am planing on doing so soon. maybe tomorrow?!? i dont whenever i do i'll record it and show every1 here

ya i'll be mounting the propane tank soon.

the barrel is glued in.

i have a video of it firing, but just with a a bag to just test what amount of propane i need to use. there's a link for u to see the video.

lol am not markfh11q

thanks nivekatoz

yes i like how the wiring is all clean and does not show to much of it

OK i an just going to leave it how it is.
finish my big cannon I've been working on for some time and then maybe make one more before i leave to study.

what??? how????

i just this tool to help me found it out.
O and it also said i need about 40 psi of propane and i really only need 25psi.

http://www.advancedspuds.com/SpudToolonline.htm

cool cannon! 8)
lol

starman here are the pic's of the spark gap i made

<a href="http://s217.photobucket.com/albums/cc216/stevenarroyo/?action=view&current=IMG00328.jpg" target="_blank"><img src="http://i217.photobucket.com/albums/cc216/stevenarroyo/IMG00328.jpg" border="0" alt="Photobucket"></a>

<a href="http://s217 ...

i try to find pictures of the spark gap.

and ya i didnt add the 2 elbows into the math.

what a good ratio??
this cannon's ratio is 1.22:1