Originally Posted by
ZAGNUT
fine as long as the tubing doesn't harden and leak at the barbed fittings with exposure to the fuel. small spring clamps would be good insurance.
I'll do that. Also, it could be replaced once a year or so when it hardens etc.
i really would have left the hub full diameter for its full length. the stress riser mentioned in post 70 does come into play now. this isn't the type of part that you can periodically check for cracks, only failure mode here is catastrophic.....and if it does fail it can do some very serious damage. proceed with caution and maybe get someone with engineering credentials to look it over.
I have had my mechanic/engineer friend to look at it as a matter of fact. He is the most informed and experienced person I know in this field. I thought it was too thin too, however, he is of the opinion it is plenty strong enough. I know where I can get a second opinion at some later date when I meet up with another flying friend.
You have got me thinking further about it though. I could machine up another one I suppose.