This is a bit of a mystery build, I’ll divulge all at the end of the build.
For the time being I’m calling it Project X
Here is the first step in the build… The forward body tube….
I’m rolling up a 1000mm x 4in diameter Carbon fibre tube..
In this lay-up I’m using 2 layers of 3k uni-directional carbon, with 3 layers of 2x2k twill over the top.
I’m doing this way so the tubes are able to withstand extreme mach stresses (not giving anything away )
So here’s a bit of the process I’m doing…
This is the Uni-directional Carbon cloth cut to length and width
Getting the 4" mandrel prep'd with a wax paper release, spiral wound.
getting the epoxy and rollers ready..
Here you can see the 2 x uni-directional laid-up, and I'm starting the 2x2k twill layers.. sorry couldn't get more photos,
but it's pretty hard when you in the middle of it all...
Making sure I get the layup nice and strait...
Got the peel ply layer on, I've gone around twice here, becuase it give a better finish, and less chance of bubbles in the carbon..
I post cured it for 4hrs at about 70C, then an hour at about 90C..
All up I used 390g of epoxy in the lay-up and lost about 100g in the post cure (came off with peel ply)
Total weight of the tube 640g, which I'm very stocked with that, as I've
got under a 1:1 cloth to epoxy ratio. and with no dry spots.
I'm still a little wet in the inside of the tube, so I could have got a better
ratio, but I think the epoxy was going off to quick for me.. and the first
130g mix was leathering up by the time I got the peel ply on..
But still I'm very happy with the result... very clean tube, and super strong..