air fill system and piston sealing

[uncomplientspud]

Hey guys

Going to get my new cannon built this weekend. Found all my new pipe i will need.

Only questions i have are:

What is a reliable way to fill the chamber with air? Bike valve, quick connect?

From what i have seen with the piston diagrams, i have noticed one thing. If i use say a 1 inch barrel, won't i need a t that is larger than 1 inch?. Is i use a 1 inch t won't that prevent me from sealing the piston to the barrel? Maybe it's just me

Any help would be great

[Carlman]

for a 1" porting piston valve you will need a T bigger than 1" so there is enough air to push the piston back.

[pizlo]

I would recommend going at least 1.5 down to 1.

[spud yeti]

to fill the chamber it depends on what you have.
A bike pump: pump
Compressor: quick connect
Your lungs: quick connect