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Originally Posted by jeffyjeep
My WAC sustainer will be static. I’m also going to defy the rocket gods and use what I have on hand: BT-5 and PNC-5. It’s not intended to be a museum piece—nor will it be. I’m already brainstorming a “now for some technique” for centering the sustainer in the PNC-80.
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OK, here is how I did it.
At the base of the nose cone there is a hole. Clean it up a bit so it is perfectly centered (as close as you can.
Get a 1/4"(or as close as you can), wood dowel about 12" or so long.
Push some of the clay nose weight that comes in the V-2 kit all the way into the nose.
The clay is to hold the dowel inside at the tip of the nose cone.
If the hole in the back of the cone is too big for the dowel, use tape to hold it in place.
Insert the dowel into the cone with one end imbedded into the clay to hold it place the dowel on a table with the nose cone sticking out over the edge.
Slowly spin the dowel with the palm of your hand and with a pencil carefully mark the tip of the spinning cone.
As you spin the cone you can easily see if it is centered.
That should work.
Now I would just use my lathe
The scale dimensions are Body tube of the V-2 is 65" model is 2.60"
The sustainer is 12" so scale gives me 0.48".
A BT-5 is 0.54" so a difference of 0.06".
No biggy.