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  #1  
Old 03-01-2015, 02:58 PM
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mojo1986 mojo1986 is offline
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Default For You Builders Out There

For you guys who like to build, a not-quite-complete Estes K-39 Saturn V up on Ebay right now. Drop in and take a look at what I did with mine..............

http://www.ebay.com/itm/26179683085...984.m1555.l2649

By the way, can anybody tell me where I need to get the CG to fly the 5-cluster?

Joe
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Old 03-01-2015, 06:33 PM
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ghrocketman ghrocketman is offline
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I have no idea where to put the CG, you may want to 'swing test' it or use one of the programs like RocSim to tell you where the CG needs to be.

Looks very interesting. The original with clear plastic fins and those ratty body wraps looked like a POS.
I hope you PAINT all the black details to make it look decent (do NOT use those garbage white/grey wraps) and get a nice set of decals from Gordy.
The 5 engine cluster makes it neat.
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Old 03-01-2015, 08:37 PM
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mojo1986 mojo1986 is offline
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Quote:
Originally Posted by ghrocketman
I have no idea where to put the CG, you may want to 'swing test' it or use one of the programs like RocSim to tell you where the CG needs to be.

Looks very interesting. The original with clear plastic fins and those ratty body wraps looked like a POS.
I hope you PAINT all the black details to make it look decent (do NOT use those garbage white/grey wraps) and get a nice set of decals from Gordy.
The 5 engine cluster makes it neat.


GH, since the profile is identical to the large K-36 Sat V, my CG should be at the same spot on the rocket as it is for the larger bird. So I'm hoping one of you guys can put your engine(s) in a K-36 and do a balance test to find out where the CG is. I have never used RocSim.

Joe
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Old 03-02-2015, 11:47 AM
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mojo1986 mojo1986 is offline
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So can anyone tell me where the CG is, measured from the bottom, on the Estes K-36 saturn V?
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Old 03-02-2015, 12:32 PM
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ghrocketman ghrocketman is offline
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Depends on the version of Estes Saturn V.
The K-36/1236 and 2001 version have the engine in far different positions in the BT-101.
The K-36 has the engine mount almost at the bottom of the tube, where the 2001 has it up about 4" from the bottom.
My K-36 suffered a cato more than 20+ years ago that resulted in "Broom-'n-Trash Bag" recovery...it is long gone.
I don't think measuring the 2001 version is what you need.
Not sure about the two later versions.
I have the latest Estes version also, which has plastic wraps and is almost a total clone of the old Centuri one, but I have not opened it.
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When in doubt, WHACK the GAS and DITCH the brake !!!
No Harm=NO Foul advocate

If you are NOT FLYING LOW in the left lane, you need to GET THE #$&@ OUT of it !

Yes, there is such a thing as NORMAL
, if you have to ask, you probably aren't
!
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Old 03-02-2015, 04:36 PM
kevinj kevinj is offline
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Quote:
Originally Posted by mojo1986
So can anyone tell me where the CG is, measured from the bottom, on the Estes K-36 saturn V?


Closest I can find is this:
http://www.oldrocketforum.com/showp...452&postcount=8

"CG has to be right about midpoint of the SIC/SII interstage ring"

kj
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  #7  
Old 03-02-2015, 09:12 PM
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mojo1986 mojo1986 is offline
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Thanks Kevin...........that's what I needed.
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Old 03-03-2015, 02:09 AM
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Quote:
Originally Posted by kevinj
Closest I can find is this:
http://www.oldrocketforum.com/showp...452&postcount=8

"CG has to be right about midpoint of the SIC/SII interstage ring"

kj



Interesting how different the Estes and Centuri versions are in that picture...


Bill
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Old 03-03-2015, 02:14 AM
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I had the K-36 back in the day.

With the Dr. Zooch kit available now, is there any reason to prefer the K-36?

The only thing I can think of is the opaque parts of the fins are not oversized.


Bill
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Please unload your question before you ask it unless you have a concealed harry permit.

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Give a man a rocket and he will fly for a day; teach him to build and he will spend the rest of his days sanding...
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