haha what a fail!!! ye think ill do some homework...

thinking of making a hybrid with this as the chamber...

Also want to use one of those co2 tyre inflators for compressed air, with a decent heavy duty tyre valve.
Gunna try turning my own burst disk valve on the lathe and use thin plastic for the disks.

Never made a hybrid before and im not too ...

The hose is just some thick rubber tubing i found lying around. Theres no fuel meter or fan, just spray and prey.
Would shortening the chamber do the trick?
i have a pc fan but its just too big

barrel is 29" long and 1.5" wide
chamber is 18" long and 3" wide

Could the chamber be too long? its unreliable to say the least. But when it does work, it really does bang!
Ive tried several different ignitors but found an AA battery operated rapid spark thing works best
ive made several others in ...