Thread: RDC V-Max
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Old 09-06-2019, 07:59 PM
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mwtoelle mwtoelle is offline
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Quote:
Originally Posted by A Fish Named Wallyum
Last year I bought an ebay lot of nose cones, mainly because one of the cones looked like the cone for the RDC Cardinal/V-Max. It had been sharpened to a point, but whatever. It doesn't quite fit any of the tube stock I have on hand, but I do have a scrap of some mystery tube that fits it like a glove. Golf season has (finally) ended, so I'm going to try to make it to a build session at eRockets next Tuesday, both to get some rocket building done among like-minded people, as well as to potentially track down a proper tube to finish the V-Max.

It looks like Semroc/Centuri ST-7 tubing will be the closest match for the equivalent RDC tubing. I looked at a 1968 RDC Catalog on ninfinger and found that the RDC tube for that nose cone had an I.D. of .710" and an O.D. of .750". This makes for a wall thickness 0.020". In other words, think of a Cetnuri ST-7 tube wound around a BT-20 mandrel instead of the correct mandrel for a ST-7.
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Mike Toelle

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