another piston question
im about to build my first coaxial piston valve and i was wondering if it is ok to have a small leak in the seal between the pilot and chamber (the piston will seal perfectly to the barrel). i know this will hamper the opening time of the piston but will it work if the piston isnt perfect
- Attachments
-
- piston2.png (17.42 KiB) Viewed 1637 times
AHahahahah!!mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
- Lockednloaded
- Staff Sergeant
- Posts: 1566
- Joined: Thu Sep 03, 2009 9:38 pm
- Location: Texas, USA
- Been thanked: 7 times
it has been said that the piston need to be snug enough not to fall out or turn, and loose enough to be able to push with one finger
I love lamp
- Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
if the gap is 1/2mm that to much
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
- Technician1002
- Captain
- Posts: 5189
- Joined: Sat Apr 04, 2009 11:10 am
If it rattles sideways the gap is too big. A proper piston will look like it would stick if given a chance. This pipe was sanded smooth and then the piston was very carefully machined down until it just fit inside. It worked like a charm until the chamber developed a leak at the other end.
This cannon is now retired.

The Mouse Musket breech. 2 inch chamber, 1 inch coaxial barrel, 1.25 inch valve seat (sealing surface) and 1.5 inch piston.
This cannon is now retired.

The Mouse Musket breech. 2 inch chamber, 1 inch coaxial barrel, 1.25 inch valve seat (sealing surface) and 1.5 inch piston.
- Attachments
-
Musket 30 PSI.mp3.zip
- Mouse Musket testfire at 30 PSI.
- (58.17 KiB) Downloaded 92 times
k thanks il keep that in mind when i get around to building my piston
AHahahahah!!mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
- clemsonguy1125
- Sergeant 5
- Posts: 1485
- Joined: Tue Jul 21, 2009 4:00 pm
- Location: East Coast
Another trick is that if you shine a light through the barrel you shouldnt be able to see it from the back of the piston
That is all.