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Offset centering rings?
All,
Does anyone know of a vendor that makes offset centering rings? By offset, I mean that in a cross-sectional view, the "12 o-clock" position of both tube circles would be touching, as opposed to the concentric circle view of a standard centering ring. I'm looking for a BT-20 to BT-50, and a BT-50 to BT-55 Thanks, EV |
#2
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Quote:
As in, for example, rings for the off-center motor tube used in the Centuri Space Shuttle? BMS for certain, with his custom-cut ring service; SEMROC possibly (Carl's Krellvenator in action), you'd need to ask him.
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#3
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Since your holes are off center, his usual setup (shape 15 in the BMS catalog) is not suitable, and a DXF is called for. Here are some DXF files that should work (zipped, attached). Ping him with them and see what he says. BTW, I added a mark for alignment. You'll need it to keep the tubes from getting cock-eyed. I've thought about using rings like this for doing a cluster where I want the outboard motors to be as close to the centerline as possible. The Estes X-prize kit with the 6 outboard tubes (Rubicon?) is a great candidate for clustering, but I don't need 24mm motors in the outboards; 18mm motors (or smaller) will work fine. Having this kind of ring would help that project (if I ever get 'round tuit BR, Doug Last edited by Doug Sams : 07-19-2005 at 11:00 AM. |
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