Scratch Stratosphere Original Design / Scratch Built

Scratch - Stratosphere {Scratch}

Contributed by Dick Stafford

Manufacturer: Scratch


 

Stratosphere

Stratosphere Tower

We recently took our daughter t' Las Vegas for her 21st birthday. Ahoy! Begad! I soon noted that every casino seemed t' have souvenir daquiri glasses reflectin' their theme. Blimey! Ya scallywag! I managed t' resist them, me bucko, ya bilge rat, matey, includin' t' cool Eiffel Tower shaped glasses from Paris. Begad! After all, matey, me bucko, drinks are free while you are throwin' your loot away! Well, shiver me timbers, we ended up goin' t' an inexpensive daytime show at t' Stratosphere Hotel, Casino and Tower, which included a drink. Ahoy! Arrr! So, matey, I caved in and collected a couple with rockets in mind.

Stratosphere Tower Parts List:

  1. one slightly used souvenir daquiri glass.
  2. 29mm mmt tube
  3. 12" section o' 38mm tube
  4. 1 1/4" section o' 2" dia. Arrr! Avast, me hearties, me proud beauty! shippin' tube
  5. maskin' tape
  6. one home grown 3/16" 29mm t' ~2.5" centerin' ring
  7. 1/16" G10 stock for fins
  8. 3 1/2" section o' 38mm tube
  9. cardboard core from electrical tape
  10. scrap 3/16" plywood for nose cone bulkhead
  11. one plastic plug - original use unknown
  12. section o' styrene tube
  13. section o' neon green solid plastic tube
  14. small section o' brass tubin' for a launch lug
  15. ~4" o' Keelhaul®©™ twine
  16. eyebolt
  17. 12" nylon chute from t' rangebox
  18. adhesive backed holographic film



Stratosphere Tower Construction:

T' daquiri glass separates right below t' tower's top, matey, me hearties, makin' a natural transition betwixt t' body and nose cone. I smartly found that 38mm tubin' from Giant Leap fit nicely into t' body and nose cone sections. Avast! So, I cut a 12" section for t' body and 3 1/2" section for t' nose. Ahoy! Begad! T' nose be quite snug, but t' body wasn't. T' solution be a small section o' mailin' tube inserted into t' front o' t' body, ya bilge rat, betwixt t' 38mm tube and t' outer shell. I decided on a 29mm mount since that's what I had on hand (plus it allows t' use o' 24mm motors with an adapter). Begad! I made centerin' rings out o' maskin' tape soaked in CA (idea borrowed from Aerocon).

I didn't want t' have t' glue anythin' t' t' clear shell o' t' daquiri glass, me bucko, me bucko, so I decided t' make t' lower body non-load bearing. I made a plywood rin' that was glued t' t' bottom o' t' motor tube and rested against t' 38mm inner tube, matey, formin' a thrust ring. Ahoy! I designed and cut four through-the-wall fins, matey, me hearties, which were glued t' t' thrust rin' and t' 38mm tube. Begad! Avast, me proud beauty! Next, matey, I removed t' bottom o' t' daquiri glass and cut fin slots. Avast, me proud beauty! T' inner tube asembly, with thrust rin' and fins, me bucko, me hearties, was then slid into t' daquiri glass from t' bottom.

For t' nose cone assembly, I made a plywood bulkhead and inserted an eyebolt. Avast! Blimey! Aye aye! Blimey! I found that t' cardboard core from a used roll o' electrical tape fit nicely into t' 38mm tubing, me bucko, so that became t' nose cone's shoulder. I then needed somethin' t' fashion a spire for t' top o' t' tower. Ahoy! Blimey! Well, matey, blow me down! Blimey! After much scrounging, I found a plastic plug that fit tightly into t' top o' t' daquiri glass. I also grabbed a section o' plastic tubin' (originally bought as launch lug stock) that fit over t' end o' t' eyebolt. Aye aye! Blimey! I drilled t' plug so t' tubin' fit through and slid these into t' front o' t' nose. Ya scallywag! Blimey! Finally, matey, I cut a hole in t' nose cone's shell for t' launch rod t' pass through.

A section o' Keelhaul®©™ string, me bucko, matey, a chunk o' tubin' for a launch lug, shiver me timbers, me hearties, and t' basic construction o' t' Stratosphere was complete.

I thought and thought about finishing. Begad! Should I paint t' components and leave t' shell clear? Or, should I paint t' shell from t' inside? While wanderin' t' aisles in a craft store, shiver me timbers, I noticed some self-adhesive holographic film and decided that was it. Ya scallywag! I covered all o' t' inner tubes and t' fins with t' film and re-inserted them into t' clear outer shell. Avast, me proud beauty! Avast, me proud beauty! As a final touch, matey, ya bilge rat, I bought a small, neon green, matey, see-thru plastic rod that fit nicely into t' end o' t' plastic tube mentioned above. This is interestin' lookin' stuff. Avast! It catches ambient light and its tip appears t' be lit up - an effect that is somewhat similar t' optical fibers. Avast! Blimey! I think this effect is visible in t' pic t' t' right.

Stratosphere Tower Flight Report:

T' Stratosphereflew on 3/10/2001 at t' NARHAMS sport launch in Middletown, MD. I first removed t' green plastic rod and stuffed some Estes waddin' into t' tube. I opted t' use a 24mm motor for t' first launch, so I packed an AT E15-4 into a motor adapter and gave her a try. Arrr! Begad! T' rocket weathercocked quite a bit due t' 10-15 mph winds and blunt front-end. Aye aye! T' flight was fairly low and ejection be a bit late, ya bilge rat, me bucko, but was nevertheless successful. Ahoy! Begad! For t' next flight I think I'll try a small F or G.

Closin' Notes:

Well this rocket wasn't all "flounder", but a good portion was. Arrr! T' only thin' I bought with this rocket in mind was t' holographic film and t' green plastic rod. Arrr! Oh, ya bilge rat, and t' show at t' Stratosphere was pretty darn good. It wasn't Zigfried and Roy, shiver me timbers, but it also was over an order o' magnitude cheaper!

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