Pump modifying

[elad311]

I have a great pump, and a want it to be always attached to my pneumatic cannon, but I need to modify it! see:
(the 1st picture shows the I need to modify it!)

Any ideas?!

[mark.f]

OMG! YOU NEED TO MODIFY IT!

Ehm... I can't really tell anything from this post, other than the fact that that pump looks like a basketball pump.

Here's a tip:

I hooked a basketball pump up to a scrader valve on an air carry tank at 60 PSI before. The whole handle and pump cylinder blew out of the pump and flew across my room and into a door, denting it.

Now do you really want to use this pump?

[jimmy101]

Like mark said, it looks like a pretty low pressure pump, probably something like 30 PSI max.

Looking at the picture, I would guestimate the piston diameter at about 1". That means to get to 100 PSIG you'll have to supply about 80 pounds of force. If the piston is 1.5" D then you'll need ~180 pounds of force to get to 100 PSIG.

EDIT: ENgrish

[i-will]

that pump will kill u. i had one and was pressurizing a bottle with it until the cylinder snapped. it happened so fast and i couldn't stop my hand from going into the shards. i got a few to the knuckles. wasn't so fun when i was bleedin all over my new shirt.

THROW IT AWAY. it's meant for low pressure (sports balls). it can't even properly inflate a bike tire.

[psycix]

You could "modify" it by replacing the shaft with smaller diameter copper pipe, a new piston+rod and a custom check valve. Oh wait, now there is nothing left of the original pump....

[john bunsenburner]

as every body said it! that pump can easyly kill you. make a better one from a thick pipe, or build a piston compressor, ally ou need is a strong check valve, a piston, metal rod, strong metal pipe, a metal disc, common sense and a strong electric motor!