Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > Projects
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #31  
Old 07-10-2019, 11:29 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,443
Default

I would use a 24mm Aerotech E30.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
  #32  
Old 07-12-2019, 06:06 AM
zielijo1 zielijo1 is offline
Intermediate Rocketeer
 
Join Date: Mar 2013
Posts: 51
Default

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
Reply With Quote
  #33  
Old 07-12-2019, 09:56 AM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

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.
__________________
I love sanding.
Reply With Quote
  #34  
Old 07-23-2019, 12:21 PM
zielijo1 zielijo1 is offline
Intermediate Rocketeer
 
Join Date: Mar 2013
Posts: 51
Default Success on 50th anniversary

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
Attached Thumbnails
Click image for larger version

Name:  196BA2CB-3A6F-4A6B-BC8A-182F1405CA53.png
Views: 29
Size:  1.07 MB  
Reply With Quote
  #35  
Old 07-23-2019, 02:29 PM
scigs30 scigs30 is offline
Master Modeler
 
Join Date: Jul 2006
Posts: 2,261
Default

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.
Reply With Quote
  #36  
Old 07-23-2019, 05:53 PM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

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!
__________________
I love sanding.
Reply With Quote
  #37  
Old 07-23-2019, 05:55 PM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

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!
__________________
I love sanding.
Reply With Quote
  #38  
Old 07-23-2019, 06:25 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,443
Default

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.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
  #39  
Old 07-23-2019, 07:43 PM
zielijo1 zielijo1 is offline
Intermediate Rocketeer
 
Join Date: Mar 2013
Posts: 51
Default

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
Reply With Quote
  #40  
Old 07-23-2019, 08:09 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,443
Default

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.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 02:01 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024