Joined: Sun Sep 26, 2010 4:30 am
danb wrote:In the uk these silver grey bottles are 1L in capacity and have cheap energy drink inside them i had a 4L rocket it crashed hard on several occasions and these bottles just kept on going i think they must be a thicker PET.
danb wrote:I have had them up to 120psi and left them there for 2 mins trying to simulate launch conditions i am yet to test there full bursting pressure. The way i welded them was when i saw a ring of molten plastic form round the outside of cap i knew they were ready to be joined together. Im yet to test the couplers in flight so when the weather behaves itself i will update the results.