#1
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Foil lined tubes
My BMS clone of the month came with a foil lined motor tube. It also has an engine hook. Any special glue needed to attatch the thrust ring? Does the area need to be scratched so the glue sticks?
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#2
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I've always assumed the lining needed scratching. I marked off the handle of my skinny X-Acto and scraped away the area.
I used yellow glue. |
#3
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I used some foaming gorilla glue forward of the thrust ring as a backup - it sticks to everything, use very little.
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#4
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Thanks for the info. The tube is 9 inches and the rocket BT is 34 inches and I installed a baffle in the top about 8 inches from the NC. Do I really need all 9 inches of the motor mount or can I just cut it off a little longer the what I need for the engine and thrust ring. I intend on using a E engine or a D with a spacer
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#5
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Long tube
The only reason I would think the foil tube is extended is to protect the main body tube just a little longer from the hot ejection gases and particles. Naturally, the longer tube also "aims" the ejection charge further up the tube (have you ever experienced a sidewall burn through just in front of the ejection charge? It is awful!)
If CG isnt a problem, the weight of the extra foil tube might only matter in competition. |
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