Just had a go.......
Posted: Sat Aug 20, 2016 7:07 pm
Hi from the UK
Well not sure how I stumbled across water rocketry, may have been on youtube, but here I is.
I had a go at splicing a pair of 2Lt bottles today....... It didn't end well. I think the PU type caulk adhesive, I tried, was too high a viscosity. I managed a good heat shrink on one bottle to bring the bottles together, dry, but once the adhesive was on it caused buckling of the inner bottle as the 'glue' just rolled in places forming thick lumps. Looking at the various videos of splicing the adhesive used seems to be of a lower viscosity and in fact even looks much wetter to the eye and certainly spreads and works better than the rubbish I tried.
So after a second attempt, having cleaned the bottled down, I had a bad spasm and crushed the bloody bottles as it just wasn't going to work. I was already a bit annoyed as I had got a set of unbranded hose fittings from screwfix only to find the tap fitting didn't fit (My fault). This is solvable I just have to file the bottle threads down until it does and permanently fit it in place. Which is fine for a first go.
Now do I try splicing (though it seems the UK lacks a PL alternative of good or known repute or go for a Robinson fitting. My plans? Just to have a little fun. Go for a 4Lt as a start with a box fin as per USWR site. I dabble in electronics (analogue can't programme the new fangled stuff for toffee) I have a stirrup pump for my bike that has a gauge so I'm sort of partway there...... Not
Well not sure how I stumbled across water rocketry, may have been on youtube, but here I is.
I had a go at splicing a pair of 2Lt bottles today....... It didn't end well. I think the PU type caulk adhesive, I tried, was too high a viscosity. I managed a good heat shrink on one bottle to bring the bottles together, dry, but once the adhesive was on it caused buckling of the inner bottle as the 'glue' just rolled in places forming thick lumps. Looking at the various videos of splicing the adhesive used seems to be of a lower viscosity and in fact even looks much wetter to the eye and certainly spreads and works better than the rubbish I tried.
So after a second attempt, having cleaned the bottled down, I had a bad spasm and crushed the bloody bottles as it just wasn't going to work. I was already a bit annoyed as I had got a set of unbranded hose fittings from screwfix only to find the tap fitting didn't fit (My fault). This is solvable I just have to file the bottle threads down until it does and permanently fit it in place. Which is fine for a first go.
Now do I try splicing (though it seems the UK lacks a PL alternative of good or known repute or go for a Robinson fitting. My plans? Just to have a little fun. Go for a 4Lt as a start with a box fin as per USWR site. I dabble in electronics (analogue can't programme the new fangled stuff for toffee) I have a stirrup pump for my bike that has a gauge so I'm sort of partway there...... Not