WHY
Gold Member
- Joined
- Jun 13, 2005
- Messages
- 4,384
- Location
- miami,oklahoma
- Aircraft
- Ercoupe and Cessna 150, 152, 172, 140, Aeronca,7ac, Citabria,Chief,Piper PA11,PA12
- Total Flight Time
- 215
Thanks for all the info guys, John they had a collspsable mandrel of some kind, I thought about buying the carbonfibre tube but WOW WOW what a price, so am looking into some way to make it as I probably don't need the percision that someone like Dragon Plate manufactures.
Initially I was looking at EMT conduit (cheap) but that failed as soon as I measured the percision of the round at various points NO GO. So next is to measure something like extruded 4130. If I could find something that would loosen in water but not let the epoxy bleed thru and bond to the tubing or saturate what ever I use and literally make it part of the carbon fibre tube, or like my first thought was wax paper but then I find in some informataion on laminates they specifically state not to use wax paper as it will dissolve the wax and it will bleed into the epoxy and contaminate it and ruin the mixture. So now I am thinking maybe just common brown wraping paper and paint it if the paint does not contaminate the epoxy. may have to choose a special paint of some kind.
Ed "at the moment" the HS is going to be in 2 pieces of styrofoam, 1 for the uper half and 1 for the lower half with this carbonfibre frame work routed in side, hard to explain and I don't know how to do a drawing and post it. Once all the router work is done for the frame and the control cables, the two pieces will temporarily be fastened together with those sharp toothpicks and tape and the hot wired to shape. Then seperated and everything will be put into place with micro slurry and and the two pieces bonded back together for the covering, don't know if it will be carbonfibre or glass.
Tony
PS I'm looking at round tubing around 1-1/8 inch and square tubing the same, I'm going for the extra strengh because of the twin rudders at ends.
Initially I was looking at EMT conduit (cheap) but that failed as soon as I measured the percision of the round at various points NO GO. So next is to measure something like extruded 4130. If I could find something that would loosen in water but not let the epoxy bleed thru and bond to the tubing or saturate what ever I use and literally make it part of the carbon fibre tube, or like my first thought was wax paper but then I find in some informataion on laminates they specifically state not to use wax paper as it will dissolve the wax and it will bleed into the epoxy and contaminate it and ruin the mixture. So now I am thinking maybe just common brown wraping paper and paint it if the paint does not contaminate the epoxy. may have to choose a special paint of some kind.
Ed "at the moment" the HS is going to be in 2 pieces of styrofoam, 1 for the uper half and 1 for the lower half with this carbonfibre frame work routed in side, hard to explain and I don't know how to do a drawing and post it. Once all the router work is done for the frame and the control cables, the two pieces will temporarily be fastened together with those sharp toothpicks and tape and the hot wired to shape. Then seperated and everything will be put into place with micro slurry and and the two pieces bonded back together for the covering, don't know if it will be carbonfibre or glass.
Tony
PS I'm looking at round tubing around 1-1/8 inch and square tubing the same, I'm going for the extra strengh because of the twin rudders at ends.