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-   Projects (http://www.oldrocketforum.com/forumdisplay.php?f=17)
-   -   Vintage Estes K36 Saturn Build (http://www.oldrocketforum.com/showthread.php?t=17711)

ghrocketman 07-10-2019 11:29 PM
I would use a 24mm Aerotech E30.

zielijo1 07-12-2019 06:06 AM
Quote:
Originally Posted by tbzep
The original Estes K-36 separates at the capsule. The Estes #2001 (paper shrouds) separates at the same place as your Centuri kit, as does the latter Estes #2157 and #1969 kits (plastic shrouds).

Stick with the single D12-3 (if that's how it is built) for the demo launch at summer camp. It will look good, lift off slower (more scale like) and the kids can see the ejection better. If it's built as a cluster, you don't have much choice, either 3 C6's or 3 B6's. Make sure you use a good 12v ignition source and check your igniters before installing them.


Hi, many thanks for the feedback.
On the older Centuri kit, do I need the clear stabilizing fins?
Haven’t flown this in 20 years. Next week is the day
Thanks
Jz

tbzep 07-12-2019 09:56 AM
Quote:
Originally Posted by zielijo1
Hi, many thanks for the feedback.
On the older Centuri kit, do I need the clear stabilizing fins?
Haven’t flown this in 20 years. Next week is the day
Thanks
Jz

I never flew mine without them. You might get by without them on a single D12-3, but I'd definitely use them with a cluster. Since the Centuri kit is such a classic, it isn't worth taking the chance without them, IMHO.

One thing I always did was to make sure I put the clear fin slot on the same side for all four fins. That gave it a slight roll, adding stability. If you don't pay attention, you could end up putting the fins on in a way that makes it tip over.

zielijo1 07-23-2019 12:21 PM
Success on 50th anniversary
 
1 Attachment(s)
Had a great time flying on a D12-3, ejection was quick, maybe went 150 ft. Used the clear fins. Easy recovery.
Thanks for all comments
Joe

scigs30 07-23-2019 02:29 PM
Mine is all masked off ready for the black paint, been too busy at work and this build is coming along slowly. Masking was not all that bad, but I need the humidity to come down before I can paint.

tbzep 07-23-2019 05:53 PM
Quote:
Originally Posted by zielijo1
Had a great time flying on a D12-3, ejection was quick, maybe went 150 ft. Used the clear fins. Easy recovery.
Thanks for all comments
Joe

GH will come in and tell you to fly it on nothing less than an F, but the D12-3 is perfect for demonstrations so that people of all ages can see all aspects of the flight, and for locations as small as a little league field (usually 200 ft from the plate to the fence) as long as you pay attention to the wind. Glad it went well for you!

tbzep 07-23-2019 05:55 PM
Quote:
Originally Posted by scigs30
Mine is all masked off ready for the black paint, been too busy at work and this build is coming along slowly. Masking was not all that bad, but I need the humidity to come down before I can paint.

I'm in the same boat. I've been covering shifts for folks at summer guard camp and for a couple surgeries. Between that and all the crazy rain and humidity, I just didn't get it done by the 20th. It's guaranteed to be done by Apollo 12's anniversary, though!

ghrocketman 07-23-2019 06:25 PM
Estes no longer lists the D12-3 as a motor for the current Saturn V.
Only the E12-4 and E30-4.
I have never flown one on less than a 3xC5-3 cluster, which is ~75% of a full-40 n-sec E.
I consider the Aerotech E15/18/28/30 as a minimum.
They fly great on 24mm RMS F24's.
Yes, I do consider Saturn V flights on D's a BAD JOKE.

zielijo1 07-23-2019 07:43 PM
Quote:
Originally Posted by ghrocketman
Estes no longer lists the D12-3 as a motor for the current Saturn V.
Only the E12-4 and E30-4.
I have never flown one on less than a 3xC5-3 cluster, which is ~75% of a full-40 n-sec E.
I consider the Aerotech E15/18/28/30 as a minimum.
They fly great on 24mm RMS F24's.
Yes, I do consider Saturn V flights on D's a BAD JOKE.


Hi, but mine was built 30 yrs ago. Which E would fit where a D12 fits. It’s in the same space that the 3 engine cluster fits.
Thanks
Jz

ghrocketman 07-23-2019 08:09 PM
An Aerotech E30 is the same size as an Estes D12.
More than double the power with 40n-sec compared to the 17n-sec Estes D.


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