Boosters, splicing, Robinson coupling help!

Members post instructions to construct water rockets, launchers, deployment systems, staging mechanisms, splicing bottles, and payloads.
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flett044
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Boosters, splicing, Robinson coupling help!

Post by flett044 »

I was wondering if some one could give me a dezine for easy fall away boosters. Also easy robinson coupling plans, and also will liquid nails work for splicing?


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Re: Boosters, splicing, Robinson coupling, staging help!

Post by flett044 »

I need help with a dezine for falling away boosters and an easy robinson coupling, will liquid nails work for splicing? Also an easy staging mechanism dezine would be nice thanks


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bugwubber
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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

Liquid Nails is a no. Are you able to get a polyurethane glue like pl premium?


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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

Getting ready to launch this airstart/staging mecahism today if plans go well. The lower stage has a glueless pvc (no metal) version of the robinson coupling on board as well. I'll let you know how it goes.

http://www.wra2.org/forum/viewtopic.php?f=3&t=2682


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flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

I can get pl


flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

Will pl 750 work? Or does it have to be premium? Can some one also tell me how to attach bottles end to end


flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

Or does pl roofing glue with polyurethane work?


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bugwubber
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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

PL Premium 3x or 8x is well tested and what I know will work. Anything else, you will be experimenting.

Check out the How to section of this forum yet? Some good stuff there.


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flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

No I'll check it thanks


flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

Pl roofing glue worked great !


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bugwubber
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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

Great! Best cure time for the plp is at least 4 days. But then the bottle should fail first.


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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

Wow my phone must have mangled my post. Is the pl roofing black? I'll be very interested to hear your results.


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flett044
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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

Its black, it didn't burst at 80 psi, but the pvc launcher did lol


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Re: Boosters, splicing, Robinson coupling help!

Post by bugwubber »

Oh um, you're supposed to use Schedule 40 at a minimum... best solution is to use steel for lower and screw on pvc launch tube. But pvc sched 40 works if you keep it under 200psi


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Re: Boosters, splicing, Robinson coupling help!

Post by flett044 »

I'm actually gonna build a gardena launcher( I think that's what its called )


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