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Old 01-08-2009, 11:18 PM
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Night Tripper Night Tripper is offline
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Question Semroc Saturn 1B
I've got a Semroc Saturn 1B on it's way to my doorstep.

For those that have built this rocket, what was your preference...cluster or single engine?

Thanks.
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Old 01-08-2009, 11:53 PM
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Mark II Mark II is offline
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Quote:
Originally Posted by Night Tripper
I've got a Semroc Saturn 1B on it's way to my doorstep.

For those that have built this rocket, what was your preference...cluster or single engine?

Thanks.

The cluster mount is more complicated to build - you have to cut slots in the tank tubes to allow the four motor tubes to fit into the middle of the group - but it is so much cooler! All that fire would certainly make the model look more realistic at launch.

Mark \\.
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  #3  
Old 01-09-2009, 01:33 AM
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Cluster .
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Old 01-09-2009, 05:44 AM
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dwmzmm dwmzmm is offline
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Cluster!! My Estes K-29 kit (with Apogee Apollo capsule) now awaiting the finishing:
Attached Thumbnails
Click image for larger version Name: Estes K-29 Saturn 1-B Build 001.jpg Views: 172 Size: 71.7 KB  
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Old 01-09-2009, 09:09 AM
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After all, the Saturn 1b was nicknamed "Cluster's Last Stand".

So I vote for cluster.
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Old 01-09-2009, 09:44 AM
Jeff Walther Jeff Walther is offline
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Quote:
Originally Posted by sandman
After all, the Saturn 1b was nicknamed "Cluster's Last Stand".


<Grooooaaaannnnnn!>
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Old 01-09-2009, 11:13 AM
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ghrocketman ghrocketman is offline
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I went with a Single 24mm (wish 29mm was an option) as a single RMS24 F24W or F39T reload has roughly 50-52 n-sec total impulse whereas 4 Estes C6-5's only equal 36 n-sec total impulse. A single SU E15 or E30 has more impulse than the cluster of BP C's.
Also reliability is much higher with only ONE engine to ignite.
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Old 01-09-2009, 12:09 PM
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Quote:
Originally Posted by ghrocketman
I went with a Single 24mm (wish 29mm was an option) as a single RMS24 F24W or F39T reload has roughly 50-52 n-sec total impulse whereas 4 Estes C6-5's only equal 36 n-sec total impulse. A single SU E15 or E30 has more impulse than the cluster of BP C's.
Also reliability is much higher with only ONE engine to ignite.


Yea, sure but....there's only one flame!

What's the fun in that?
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Old 01-09-2009, 12:21 PM
Mikus Mikus is offline
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Quote:
Originally Posted by sandman
Yea, sure but....there's only one flame!

What's the fun in that?


Never having to walk out to your smashed bird just to find that only 2 of the 3 motors lit?


Been there, done that... hated it!
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  #10  
Old 01-09-2009, 12:38 PM
Indiana Indiana is offline
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You could always cluster Aerotech D24s for 74ns.
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