Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > The Golden Age of Model Rocketry > Kit Collecting
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 10-18-2016, 10:03 AM
aeppel_cpm aeppel_cpm is offline
Ciderwright
 
Join Date: Apr 2013
Location: Burlington, WI
Posts: 432
Default

Mine was in PLA and finished pretty nice - just not easy.

As a chemist by day, I have access to tetrahydrofuran, which is supposed to soften PLA, like acetone does ABS. Well, it works, but just barely.

What worked best for me was a light touch with a steel file and a lot of sanding. The 'design' sizing appeared to be the bottom of the ridges, so I had to take the shoulder down all the way smooth. I ended up using good old wood filler for the finishing touches on the upper portion. That worked fine.

I was amazed at how the primer made ridges barely discernible quite visible.
__________________
Charles McGonegal
Ciderwright
AEppelTreow Winery & Distillery
Ad Astra Tabernamque!
Reply With Quote
  #12  
Old 10-18-2016, 10:57 AM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Michigan
Posts: 8,130
Default

If one is not a "chemist" by profession, but needs access to Tetrahydrofuran, purchase 'thin type' PVC cement at any hardware chain. The main ingredient is the aforementioned solvent. It has an acrid reek unlike any other common solvent.
__________________
When in doubt, WHACK the GAS and NEVER touch the brake !!!
No Harm=NO Foul advocate

Yes, there is such a thing as NORMAL
, if you have to ask, you probably aren't
!
Reply With Quote
  #13  
Old 10-18-2016, 12:04 PM
aeppel_cpm aeppel_cpm is offline
Ciderwright
 
Join Date: Apr 2013
Location: Burlington, WI
Posts: 432
Default

I was going to object to the use of quotation marks around the word chemist - but I just checked our org chart, and discovered that my role has been renamed since I last looked. I'm now a 'R&D Scientist 2'.

So quote away.
__________________
Charles McGonegal
Ciderwright
AEppelTreow Winery & Distillery
Ad Astra Tabernamque!
Reply With Quote
  #14  
Old 10-18-2016, 02:48 PM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 8,180
Default

Quote:
Originally Posted by leftover
So is the Jupiter the body length as the Redstone or was it shorter

The Jupiter C body is shorter, which is why Estes used the larger fins.

The real Mercury Redstone had extended tanks compared to the original Redstone missile. IIRC, the Jupiter C was a standard Redstone with tapered warhead removed and cylindrical section in its place to mount the platform that spun up the Seargent stages.
__________________
I love sanding.
Reply With Quote
  #15  
Old 10-18-2016, 03:43 PM
Doug Sams's Avatar
Doug Sams Doug Sams is offline
Old Far...er...Rocketeer
 
Join Date: Mar 2005
Location: Plano, TX resident since 1998.
Posts: 3,831
Default

Quote:
Originally Posted by tbzep
The real Mercury Redstone had extended tanks compared to the original Redstone missile. IIRC, the Jupiter C was a standard Redstone with tapered warhead removed and cylindrical section in its place to mount the platform that spun up the Seargent stages.





Doug

.
__________________
YORF member #11
Reply With Quote
  #16  
Old 10-18-2016, 10:34 PM
leftover leftover is offline
Lifelong Rocket Scientist
 
Join Date: Mar 2009
Posts: 86
Default

So bought a new MR at hobby Lobby with 40% off got it for 15 bucks. ordered the molding oldies nosecone set so figure I will cut the BT down and use the leftover capsule and body tube to build a mercury little Joe.
__________________
NAR # 102461 SR
I have orbited the earth with John Glenn, walked on the moon with Neil Armstrong, landed on Mars, seen Jupiter and Saturn and explored the realm of deep space all thanks to Model rocketry.
God Bless America and The United States Marine Corps
Reply With Quote
  #17  
Old 10-18-2016, 11:41 PM
MarkB.'s Avatar
MarkB. MarkB. is offline
Drinks Dos XX w/ a squeeze of lime
 
Join Date: Feb 2008
Location: El Paso
Posts: 792
Default

Guys,

Jupiter C also had extended tanks, just not as extended as the Redstone version. See the attached from the NASA website. Or check Peter Alway's Rockets of the World and 14 U.S. Army Missiles of the Cold War.

13.75" for the missile, 17" for Jupiter C and Merc at 19.67" on a 2" diameter body (1/35 scale). Note that if your Jupiter C cone includes a section of cylinder you need to subtract that length from the 17".
Attached Thumbnails
Click image for larger version

Name:  p70.jpg
Views: 65
Size:  28.8 KB  
__________________
Identifying a problem without proposing a solution is just whining.

NAR 79743
NARTrek Bronze
SAM 062

Awaiting First Launch: Bunch of Stuff
Finishing: Excelsior/Semroc Scrambler; mini V-2
Repair/Rebuild: science fair rocket; rescue K-41
On the Bench: LTV Scout F; Sputnik; Voskhod
Dream Stage: Big R-7

Last edited by MarkB. : 10-19-2016 at 09:27 PM. Reason: Math- checked the lengths
Reply With Quote
  #18  
Old 10-19-2016, 02:11 AM
leftover leftover is offline
Lifelong Rocket Scientist
 
Join Date: Mar 2009
Posts: 86
Default

Quote:
Originally Posted by MarkB.
Guys,

Jupiter C also had extended tanks, just not as extended as the Redstone version. See the attached from the NASA website. Or check Peter Alway's Rockets of the World and 14 U.S. Army Missiles of the Cold War.

15" for the missile, 17" for Jupiter C and Merc at 19.67" on a 2" diameter body (1/35 scale). Note that if your Jupiter C cone includes a section of cylinder you need to subtract that length from the 17".

Great Mark
Thanks for the measurements and all the advice
guys
Looks like graphics will be easy only marks I see on photos are the black roll pattern, the vertical stripe on the "tub" booster under explorer, black diaganol on top and the UE designator.
__________________
NAR # 102461 SR
I have orbited the earth with John Glenn, walked on the moon with Neil Armstrong, landed on Mars, seen Jupiter and Saturn and explored the realm of deep space all thanks to Model rocketry.
God Bless America and The United States Marine Corps

Last edited by leftover : 10-24-2016 at 09:31 PM.
Reply With Quote
  #19  
Old 10-21-2016, 07:57 AM
MarkB.'s Avatar
MarkB. MarkB. is offline
Drinks Dos XX w/ a squeeze of lime
 
Join Date: Feb 2008
Location: El Paso
Posts: 792
Default

Like this:

Warhead from Shapeways; Original Estes Jupiter C Nose; Fin cans from jharding; tubes from Semroc.

Maybe this winter, I'll get to them.
Attached Thumbnails
Click image for larger version

Name:  redstones.jpg
Views: 87
Size:  699.5 KB  
__________________
Identifying a problem without proposing a solution is just whining.

NAR 79743
NARTrek Bronze
SAM 062

Awaiting First Launch: Bunch of Stuff
Finishing: Excelsior/Semroc Scrambler; mini V-2
Repair/Rebuild: science fair rocket; rescue K-41
On the Bench: LTV Scout F; Sputnik; Voskhod
Dream Stage: Big R-7
Reply With Quote
  #20  
Old 10-30-2016, 01:27 PM
leftover leftover is offline
Lifelong Rocket Scientist
 
Join Date: Mar 2009
Posts: 86
Default

Nosecone set came its perfect
Fin cans came from shapeways and they are awesome, so much so I bought 2 more
Ready to build, once I finish my Gt and Mercury Atlas
__________________
NAR # 102461 SR
I have orbited the earth with John Glenn, walked on the moon with Neil Armstrong, landed on Mars, seen Jupiter and Saturn and explored the realm of deep space all thanks to Model rocketry.
God Bless America and The United States Marine Corps

Last edited by leftover : 11-06-2016 at 05:38 PM.
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 10:24 AM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe 1998-2017