Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > The Golden Age of Model Rocketry > Plans & Publications
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 10-02-2009, 08:06 AM
Ltvscout Ltvscout is offline
Ye Olde Rocket Shoppe
 
Join Date: Jun 2004
Location: Milwaukee, WI
Posts: 6,474
Default

One can also use the handy-dandy up/down scaling chart I have online here:

http://www.rocketshoppe.com/info/BodyTubeRatios.pdf

It's located in the Building Tips section of the Ye Olde Rocket Shoppe site.

I had this credited to Jim Fackert, but he emailed me the other week to let me know it was actually put together by Doug Scobel.

The tube sizes listed in that chart are from Totally Tubular. I still have Jim's last retail price list online here:

http://www.wooshrocketry.org/misc/tt.htm
__________________
Scott D. Hansen
Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe!
Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies!
Ye Olde Rocket Forum
WOOSH NAR Section #558
Reply With Quote
  #12  
Old 10-02-2009, 10:43 AM
metlfreak metlfreak is offline
Craftsman
 
Join Date: Sep 2009
Posts: 114
Default

Quote:
Originally Posted by sandman
No computer program for upscaling just use a little basic math.

First figure out what size body tube you want to use.

Go to Jimz's site and download the plans.

On the finset the balsa sheet is 3" wide so use that as your reference. Print out the fin sheet.

Us a copy machine going up or down enlarging or reducing until the sheet shows that it is 3" wide.

Now to upscale

Divide the body tbe size you will be using for the main body, for example a BT-70

2.217" O.D.

by the original body size which is a BT-55 1.325" O.D.

You get 2.217/1.325=1.6732 or in other words 167%.

Blow all the dimensions up by 167%. so the main body tube (there are 2 of them and they are 5.3" long each.

So 5.3 x 1.67=8.85" long each

Just continue on from there.

Just in case you don't know all of the body tube length are on the page on the plans with the caliper scale and compass.

OH, yea when you get the fin pattern right just hit 167% on the copy machine for your fins.

Wow thanks man... I usually dont upscale so I dont have much practice so this info is great thanks alot.
Reply With Quote
  #13  
Old 10-02-2009, 10:51 AM
metlfreak metlfreak is offline
Craftsman
 
Join Date: Sep 2009
Posts: 114
Default

you guys are very helpful. I hope to kick this little project off by the end of next week. I'll post pics as things start to come together.
Reply With Quote
  #14  
Old 10-02-2009, 10:59 AM
sandman's Avatar
sandman sandman is offline
Custom Cone, Kit & Decal Maker
 
Join Date: Mar 2005
Location: Way North of Detroit
Posts: 5,048
Default

Quote:
Originally Posted by metlfreak
you guys are very helpful. I hope to kick this little project off by the end of next week. I'll post pics as things start to come together.


Try to keep some perspective on it.

This is not a scale model for competition. If some dimensions don't come out perfectly that's OK. You are the final judge.

Honestly, nobody would notice unless you tell them.

And if they do notice and tell you well, that's just rude.

Me, I love upscales!

Here's a few of mine.

Well some of them are downscales but it's all good.
Attached Thumbnails
Click image for larger version

Name:  apogee II.JPG
Views: 104
Size:  30.8 KB  Click image for larger version

Name:  sprints.JPG
Views: 112
Size:  55.1 KB  Click image for larger version

Name:  constellations.JPG
Views: 96
Size:  53.7 KB  
__________________
"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"

http://sandmandecals.com/
Reply With Quote
  #15  
Old 10-02-2009, 01:31 PM
DaveR's Avatar
DaveR DaveR is offline
Master Modeler
 
Join Date: Apr 2006
Location: North MS
Posts: 836
Default

Quote:
Originally Posted by sandman
Try to keep some perspective on it.

This is not a scale model for competition. If some dimensions don't come out perfectly that's OK. You are the final judge.

Honestly, nobody would notice unless you tell them.

And if they do notice and tell you well, that's just rude.

/snip


What he said.......
__________________
Dave
Fire is the leading cause of fire.
Was once SAM#0132
Reply With Quote
  #16  
Old 08-03-2019, 10:32 PM
metlfreak metlfreak is offline
Craftsman
 
Join Date: Sep 2009
Posts: 114
Default

So I did build this thing 10 years ago. I used BT-80 for the outer tube. It stands 3 feet tall.
I just started painting it today...With the spray paint I bought 10 years ago for it LOL!
Its STILL not finished but I hope to finish painting it tomorrow and decal it with the Decal set I still have from 10 years ago from Sandman
Reply With Quote
  #17  
Old 08-07-2019, 07:57 PM
metlfreak metlfreak is offline
Craftsman
 
Join Date: Sep 2009
Posts: 114
Default

I should have this one finished by tomorrow. Just have to paint the bottom silver then decal it and finally after 10 years she'll be completed.
Reply With Quote
  #18  
Old 08-08-2019, 06:56 PM
metlfreak metlfreak is offline
Craftsman
 
Join Date: Sep 2009
Posts: 114
Default

Finally finished painting it.
Its not perfect but its the first time I've painted a rocket in 10 years so I'll take it!
Reply With Quote
  #19  
Old 08-09-2019, 07:33 AM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

Looks good to me. Now launch it to the music of Ram Jam.
__________________
I love sanding.
Reply With Quote
  #20  
Old 08-14-2019, 11:48 PM
LeeR's Avatar
LeeR LeeR is offline
Retired with Way Too Many Kits
 
Join Date: Jun 2007
Location: Colorado
Posts: 3,222
Default

Quote:
Originally Posted by metlfreak
Finally finished painting it.
Its not perfect but its the first time I've painted a rocket in 10 years so I'll take it!


Congratulations on finishing it. Ten years! That’s about how long my scratch-built Orbital Transport sat, from completed assembly, to do all that sanding and filling and sanding and filling and ... well, it has a lot of balsa and basswood in it. It’s done and has been flown on an E18 reload using the 24/40 RMS. Next flight will be an F24.

I love upscales. I’ve got a monster Trident that’s been in the works since the 90s! It’s got 6 nose cones done, 3 more to go.

My upscale Astron Cobra is done. I’m ready to do the filling/sanding on two more — an Astron Sky Hook, and an Astron X-Ray.
__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp
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 10:58 AM.


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