>I've just about completed building a payload section for my PML
>Tethys. Just about the only thing left is to decide how the nose cone
>will attach to it. I've thought of 3 ways to do this, but don't know
>what method others have found best.
>1) Friction fit by putting tape on the nosecone shoulder. Problem:
>I'm not much of a fan of (or very good at) friction fitting. This
>method sounds most likely to lose the nosecone and payload.
>2) PML pop-rivets. I've never actually used these for anything, but
>I've seen others use them in the orginal CPR model. I think (but am
>not certain) that they'd be long enough to go through the body tube,
>the small space, and the nosecone shoulder. I'm leaning toward using
>3) Bolts. Figure out some way to get a nut behind the hole in the
>nosecone, and use bolts. How would I get the nut in?
>Comments and suggestions welcomed!
If you are looking for a permanent attachment,you could try the new
polyurethane glues like PROBOND(Elmer's,I think). I have glued plastics with
this stuff,and the bond is very good.It works very well on metals,too. It does
'foam up' to fill any gaps,and would have to be sanded or trimmed.
As far as nuts,you could use 'pressnuts',which are intended for pressing into a
metal panel,and filletting glue around them for retension.
Jim Yanik,NRA member.