Ye Olde Rocket Forum

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

Thread Tools Search this Thread Display Modes
Old 08-19-2018, 04:02 PM
erik442's Avatar
erik442 erik442 is offline
The Alpha Kid
Join Date: Mar 2012
Location: central PA
Posts: 64
Default Fireball XL5

Been working on this one for ages. From the 60's TV series. Parts from Semroc as well as plenty of found objects such as magic marker caps, fountain pen cartridges, plastic mesh, etc.
Main body is a BT-70 running full length with a BT-80 rear section. Most of the small bits are made of carved balsa. I hand cut all the XL5 decals from sheet vinyl using a swivel hobby knife. It is heavy at 23 oz. and measures 27" long with an 11" wingspan.

I had hoped to use an E12, but the finished weight will demand a composite F motor. I'm concerned about the forward fins, so I may use a conventional nose cone for a flight attempt. My wife thinks I'm crazy to fly it at all and risk damage. Balance was difficult to obtain and there is a ring of lead bars epoxied in just behind the nose cone shoulder. I made them by hammering .440 lead musket balls into small rectangles. I didn't want to put that much weight into the nose since it might be too much for the ejection charge to push. I picked up a 30" nylon chute for a gentle descent.

Ever notice how really interesting old sci-fi ships seem to break all the rules of aerodynamic flight when you try to model them?
Attached Thumbnails
Click image for larger version

Name:  build.JPG
Views: 93
Size:  159.7 KB  Click image for larger version

Name:  painted_side.JPG
Views: 89
Size:  1.02 MB  Click image for larger version

Name:  painted_top.JPG
Views: 101
Size:  158.0 KB  Click image for larger version

Name:  painted_underside.JPG
Views: 93
Size:  153.3 KB  Click image for larger version

Name:  painted_rear.JPG
Views: 101
Size:  1.30 MB  
Reply With Quote
Old 08-19-2018, 04:23 PM
John Brohm's Avatar
John Brohm John Brohm is offline
NAR #78048
Join Date: Feb 2005
Location: Mars, PA
Posts: 594

An outstanding result! Very well done. I think your wife may have a point!
SAM #004
Reply With Quote
Old 08-19-2018, 04:30 PM
OKTurbo OKTurbo is offline
Intermediate Rocketeer
Join Date: Aug 2005
Posts: 42

Very nice! You could use dual chutes. One for the heavy cone and one for the main....but thatís just more weight in it too.

It does look awesome....
Reply With Quote
Old 08-19-2018, 04:54 PM
Bob Austin Bob Austin is offline
Junior Rocketeer
Join Date: Aug 2018
Posts: 22

Gerry Anderson would be proud!
Reply With Quote
Old 08-19-2018, 05:14 PM
Vanel Vanel is offline
Master Modeler
Join Date: Jun 2005
Posts: 720

Absolutely fabulous!!!!!!!!
Up next:
Under construction:
Under repair:
In finishing: Mini-X (Estes rocket plan #20)
In primer: Zeta (Estes rocket plan #58), Estes America
In paint:
Ready for decals:

Bill Cooke
NAR #31312
SAM #0001
Huntsville, AL

My rocket blog
My rocket fleet
Reply With Quote
Old 08-19-2018, 05:44 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
Join Date: Jul 2005
Location: Michigan
Posts: 9,126

A G40 SU or G64 RMS 40/120 would be just about right for it.
When in doubt, WHACK the GAS and NEVER touch 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
Reply With Quote
Old 08-19-2018, 09:41 PM
burkefj's Avatar
burkefj burkefj is offline
Join Date: Feb 2009
Posts: 301

Excellent job! Mine isn't as scale and is a bit bigger because it was designed to glide, but this is the nicest scale one I've seen.
RC Rocket glider kits
Reply With Quote
Old 08-19-2018, 09:55 PM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
BP Mafia
Join Date: Mar 2005
Location: Ft. Thomas, KY
Posts: 6,938

Bill Eichelberger
NAR 79563

I miss being SAM 0058

On the build floor: Centuri Stellar Hercules, Semroc SLS Scorpion, Semroc Squire, RDC V-Max

Ready to fly: Estes Astron Farside X, Estes Astron Apogee, FRW Marauder XL, FRW Star Jart, Semroc Cherokee D
Reply With Quote
Old 08-20-2018, 01:07 AM
Royatl's Avatar
Royatl Royatl is offline
SPEV/Orion wrangler
Join Date: Mar 2005
Location: Atlanta, GA
Posts: 2,278

That is so excellent.

I've had a bt-70 and bt-80 raring to go for about ten years but never started building it. I was going to build a boilerplate first to fly to check stability before building a detailed version, but you went directly to full detail. Well done.
Reply With Quote
Old 08-20-2018, 07:26 AM
Feyd's Avatar
Feyd Feyd is offline
Master Modeler
Join Date: Feb 2010
Location: San Antonio, TX
Posts: 662

That is amazing! Great job on the detailing.
Dale Marshall, San Antonio Texas
NAR #90990
Semroc SAM #083

BAR Since 2008
Enjoying model rocketry since 1977.
The Spotted Dragon
Reply With Quote

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 10:59 AM.

Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2019