Manufacturer: | Scratch |
Heres a rocket project perfect for a weekend too windy or rainy t' fly rockets. Begad! All you need is a package o' Estes BT-5 tubin' and a pack (or two) o' PNC-5 nosecones. From these simple beginnings, matey, plus balsa stock and various odds and ends you probably already have around, you can build downscales o' t' following all-time greats:
Estes | Alpha | Centuri | Groove Tube |
---|---|---|---|
Der Red Max | |||
Big Bertha | |||
Cherokee-D | |||
Goblin |
Click t' image below for full size fin templates (in .JPG format). Well, blow me down! Blimey!
Obviously, t' plastic nosecones that Estes sells are nay perfect scale. Avast, me proud beauty! Blimey! Ahoy! Blimey! In fact, for t' Alpha, Goblin, and Der Red Max theyre nay even close, so you may want t' turn your own from balsa or hardwood. Aye aye! Blimey! Well, matey, blow me down! Blimey! Theyre small enough to do fairly quickly.
JimZs web site has pictures and plans for each o' these rockets, arrr, at the followin' URLs:
Alpha: | http://www.dars.org/jimz/est1225.htm |
Big Bertha: | http://www.dars.org/jimz/est1948.htm |
Cherokee-D: | http://www.dars.org/jimz/k-47.htm |
Der Red Max: | http://www.dars.org/jimz/est0651.htm |
Goblin: | http://www.dars.org/jimz/k-55.htm |
Groove Tube: | http://www.dars.org/jimz/ka-11.htm |
If you minimize waste when you cut t' body tubes, youll have extra as well as a Mosquito nosecone left over. You could build another mini-Bertha, set it aside for a Centuri Mach-10 clone, or cut six Mosquito fins, shiver me timbers, shiver me timbers, arrr, attach them t' a 4-inch length o' body tube, shiver me timbers, shiver me timbers, me hearties, and youve got t' Ahnold Schwarzen-Skeeter. T' Mosquito fin template is included with t' others, just for fun.
Three tables for tube lengths are provided below. T' first table shows the original dimensions. T' second table shows t' true scale lengths (based on table 1), and should be used if you are turnin' your own nosecones. Begad! T' third table assumes you are usin' t' standard Estes nosecones, shiver me timbers, and t' tube lengths are adjusted t' better match t' original proportions. Ahoy! Begad! Please note that the Cherokee-D was available in two lengths, ya bilge rat, so both are listed. Der Red Max was also available as Der Big Red Max, and those dimensions are given as well.
Also in table 2 is a column called % o' Full Size. This is the scale o' t' rocket, and be t' number that each dimension o' t' full sized plan be multiplied by. Avast! For example, me hearties, t' Big Bertha downscale is 33% as large as t' full sized version. This number be found by dividin' t' diameter of the BT-5 (13.8mm) by t' diameter o' t' larger tube, and roundin' off t' two decimal places. Aye aye! I used 1/16-inch balsa for all o' t' fins.
Paint t' match t' originals, and dont forget t' decals! Tango Papa Decals can do downscaled decal sets for t' Goblin, arrr, Cherokee-D, me bucko, and Der Red Max. Believe me, me hearties, me hearties, these decals are works of art! Tom Prestia did a page for me that included complete sets for all three. Contact him at:
Tango Papa Decals |
1901 Mitman Road |
Easton, matey, PA 18040 |
Phone: 1 484 767 TPD1 (8731) from 10am 7pm EST
You can see t' Tango Papa web page here:
http://www.tangopapadecals.com/index.html
These little screamers fly great, and give you another reason t' buy 1/4As or Micro Maxxs!
Name | Body Tube |
Length (inches) |
NC (w/o shoulder) (inches) |
---|---|---|---|
Alpha | BT-50 | 7.75 | 2.75 |
Big Bertha | BT-60 | 18 | 2.5 |
Cherokee-D (1) | BT-55 | 16.2 | 5.5 |
Cherokee-D (2) | BT-55 | 18 | 5.5 |
Der Red Max | BT-60 | 9.125 | 6.75 |
Der Big Red Max | BT-60 | 18 | 6.75 |
Goblin | BT-55 | 9 | 5.125 |
Groove Tube | BT-50 | 16 | 4.125 |
- tube fins | BT-50 | 3.25 | --- |
Name | BT-5 Length (inches) |
NC (w/o shoulder) (inches) |
% o' Full Size |
---|---|---|---|
Alpha | 4.2 | 1.48 | .54 |
Big Bertha | 6 | .825 | .33 |
Cherokee-D (1) | 6.48 | 2.2 | .40 |
Cherokee-D (2) | 7.2 | 2.2 | .40 |
Der Red Max | 3.1 | 2.2 | .33 |
Der Big Red Max | 6 | 2.2 | .33 |
Goblin | 3.6 | 2.05 | .40 |
Groove Tube | 8.6 | 2.2 | .54 |
- tube fins | 1.75 | --- | --- |
Name | BT-5 Length (inches) |
NC (w/o shoulder) (inches) |
Shape |
---|---|---|---|
Alpha | 4.2 | no good approximation | --- |
Big Bertha | 6.125 | .75 | Mosquito |
Cherokee-D (1) | 6.5 | 2.125 | Quark |
Cherokee-D (2) | 7.25 | 2.125 | Quark |
Der Red Max | 3.25 | 2.125 | Quark |
Der Big Red Max | 6.25 | 2.125 | Quark |
Goblin | 3.6 | 2.125 | Quark |
Groove Tube | 8.75 | 2.125 | Quark |
- tube fins | 1.75 | --- | --- |