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  1. #1
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113

    2.25 upscale of Estes SR-71 scratch build (pict heavy)

    As the title says, I had some LOC 2.14 and BT-70 tubes lying around and i thought to myself, how cool would it be to replicate the iconic Estes SR71 Blackbird but 2.25 times larger.
    So I got out my calipers and began scaling up every measurement.
    The rocket has not been up yet as I just completed it a month ago (total build took many many months)
    Single stage single deploy (just like the original) 29mm motor size
    hope you enjoy my crazy

















  2. #2
    Join Date
    5th October 2017
    Posts
    154
    Man that's awesome!

    Sent from my SAMSUNG-SM-G930A using Rocketry Forum mobile app


  3. #3
    Join Date
    20th June 2015
    Location
    Vermont
    Posts
    419
    Very nice. It's been one of my favorite planes ever since I watched it take off from one of my bases during my AF career. I've built and flown the Estes version.
    Jim V

    Champlain Region Model Rocket Club
    CRMRC
    Facebook
    NAR #101467
    L1 - 5/21/16 Estes Mega Der Red Max H128W to 1,021'


  4. #4
    Join Date
    14th July 2015
    Location
    Randolph, NJ
    Posts
    3,546
    Whoa, very very nice. I'd love to hear some more detailed commentary about how you laid that ginormous piece of... paper? poster board? over the whole body + wings.

  5. #5
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    6,101
    Nice!
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  6. #6
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    The "skin" is actually 3M full sheet label paper.
    I first stuck the full sheet to the center tube, wrapped the non sticky side edge up around a 4" tube and "rolled the decal down until contact was made with the balsa.
    This gave me a perfect curve the full length of the tube (34" or so)
    I then stuck a second layer of full page label paper offsetting the seams by 50%
    The edges were then trimmed.
    Finally the entire "skin" was coated with CA glue - giving it rigidity

  7. #7
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    6,101
    Quote Originally Posted by CoachSteve View Post
    The "skin" is actually 3M full sheet label paper.
    I first stuck the full sheet to the center tube, wrapped the non sticky side edge up around a 4" tube and "rolled the decal down until contact was made with the balsa.
    This gave me a perfect curve the full length of the tube (34" or so)
    I then stuck a second layer of full page label paper offsetting the seams by 50%
    The edges were then trimmed.
    Finally the entire "skin" was coated with CA glue - giving it rigidity
    Excellent technique.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  8. #8
    Join Date
    27th October 2009
    Location
    Brigham City, UT
    Posts
    2,321
    Cool model, Coach! Your nose cone chine solution is impressive. Obviously, all of your building has been piling up for a break-out here on TRF. Very impressive. What is the SR-71 going to fly on? What are you using to mold the nose cone?
    Last edited by aerostadt; 15th February 2018 at 08:15 PM.

  9. #9
    Join Date
    14th July 2015
    Location
    Randolph, NJ
    Posts
    3,546
    Quote Originally Posted by CoachSteve View Post
    The "skin" is actually 3M full sheet label paper.
    I first stuck the full sheet to the center tube, wrapped the non sticky side edge up around a 4" tube and "rolled the decal down until contact was made with the balsa.
    This gave me a perfect curve the full length of the tube (34" or so)
    I then stuck a second layer of full page label paper offsetting the seams by 50%
    The edges were then trimmed.
    Finally the entire "skin" was coated with CA glue - giving it rigidity
    Nifty. I'm a label paper user but never would have thought of using it like that. Will have to consider that for the future.

    I dare not imagine the amount of CA fumes covering that whole thing would generate.

  10. #10
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    It stunk to high heaven - I did it out doors

  11. #11
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    Quote Originally Posted by aerostadt View Post
    Cool model, Coach! Your nose cone chine solution is impressive. Obviously, all of your building has been piling up for a break-out here on TRF. Very impressive. What is the SR-71 going to fly on? What are you using to mold the nose cone?
    thanks for the kind words - and yes, I have been dying to share - glad I found you guys.
    The SR maiden voyage will be a G53-5FJ
    Open rocket says that should do well for a first go.

    The nose cone was completely hand sanded from wood filler over the balsa

  12. #12
    Join Date
    18th January 2009
    Location
    Maryland
    Posts
    11,705
    That is an amazing build. Almost too pretty to fly.

    Sent from my SAMSUNG-SGH-I337 using Rocketry Forum mobile app
    Dick Stafford
    The member formerly known as the Pointy-Haired Moderator.
    The Original Rocket Dungeon
    Volunteer compiler of product news for ROCKETS Magazine

  13. #13
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    I don't usually get nervous about the possibility of one of my rockets crashing - this one is giving me pause though - lots of hours in there
    But - it will go up, that's why I build them

  14. #14
    Join Date
    18th January 2009
    Location
    Maryland
    Posts
    11,705
    Quote Originally Posted by CoachSteve View Post
    I don't usually get nervous about the possibility of one of my rockets crashing - this one is giving me pause though - lots of hours in there
    But - it will go up, that's why I build them
    I agree, all my rockets must fulfill their destiny

    Sent from my SAMSUNG-SGH-I337 using Rocketry Forum mobile app
    Dick Stafford
    The member formerly known as the Pointy-Haired Moderator.
    The Original Rocket Dungeon
    Volunteer compiler of product news for ROCKETS Magazine

  15. #15
    Join Date
    24th January 2009
    Location
    Littleton, Colorado
    Posts
    4,097
    Awesome build! Good luck on the test flight. Maybe later on some effects motors in the pods? That would look real purdy going up on three smoke trails.

    Click image for larger version. 

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  16. #16
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    Smoke trails are a GREAT idea! - Hmm wonder what would really produce some smoke

  17. #17
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    I have seen that triple SR before (brass ejection ducts and whatnot)- yours?

  18. #18
    Join Date
    22nd August 2015
    Location
    Rhode Island
    Posts
    1,282
    This is simply incredible. The technique with the label paper is genius.
    NAR #100940, RIMRA & CMASS
    L1 - 4/17/16, Tyrannosaur (by Binder Design), Loki H144
    L2 - 8/19/17, Terrordactyl (by Binder Design), CTI J250

  19. #19
    Join Date
    24th January 2009
    Location
    Littleton, Colorado
    Posts
    4,097
    Quote Originally Posted by CoachSteve View Post
    Smoke trails are a GREAT idea! - Hmm wonder what would really produce some smoke
    Just be very naughty and plug a C6-0 18mm, or an F15-0 29mm, or use a D11 P or plug a D12-0 24mm. Mate them with white lightning or maybe all BP if the weight issue works out with a cluster. The Estes cluster model is a real easy modification and fun to fly. Need to have the nose cone somewhat tight to avoid drag separation. Likes the high, dry air of Colorado.

  20. #20
    Join Date
    24th January 2009
    Location
    Littleton, Colorado
    Posts
    4,097
    Quote Originally Posted by CoachSteve View Post
    I have seen that triple SR before (brass ejection ducts and whatnot)- yours?
    No fancy NASA style brass ejection ducts. I build Soviet Style, plug and play!

  21. #21
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    You all are great! - so glad i joined this forum!

  22. #22
    Join Date
    25th July 2017
    Location
    Colorado
    Posts
    58
    Wow, this is amazing! I just finished reading "SR-71 Revealed: The Inside Story" by Richard H. Graham, lots of interesting stories.

    Where do you fly in CO? Would love to see this! There's a CRASH launch in Lakewood this Saturday! http://www.crashonline.org/
    TRA 17281
    NAR 104429
    L1: 9/16/17, 4" Blue Angels Super DX3 - I345 to 1,733' (YouTube)
    L2: 12/2/17, 4" Blue Angels Super DX3 - J350 to 3,284' (YouTube)
    Alt/Speed: 12/2/17, 54mm MAC Scorpion XL - J357 to 7,884' at 637 mph

  23. #23
    Join Date
    24th January 2009
    Location
    Littleton, Colorado
    Posts
    4,097
    Quote Originally Posted by BDB View Post
    This is simply incredible. The technique with the label paper is genius.
    I love the 8.5 X 11 sheets of label paper. I have gone through three large boxes of the stuff the past few years. I like Avery over 3M, but both work.

  24. #24
    Join Date
    24th January 2009
    Location
    Littleton, Colorado
    Posts
    4,097
    Quote Originally Posted by gfunk View Post
    Wow, this is amazing! I just finished reading "SR-71 Revealed: The Inside Story" by Richard H. Graham, lots of interesting stories.

    Where do you fly in CO? Would love to see this! There's a CRASH launch in Lakewood this Saturday! http://www.crashonline.org/
    If the SR is there I am there DUDE! Looks like some snow is falling so they may allow a first flight with a little moister on the ground. It will be sweet on a G53 fast jack!

  25. #25
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    I wont be there this Saturday for sure - going up to Ft Collins to see my kids (CSU students)
    I will get out to CRASH this summer for sure though - right up the street from me

  26. #26
    Join Date
    8th October 2016
    Location
    Midwest
    Posts
    253
    Very cool build. Thx for sharing. The Sr-71 is one of my fav "Black Ships", along with X-15, F-117 and F-19 (Fictional aircraft).

    And welcome to TRF.

  27. #27
    Join Date
    27th January 2009
    Location
    Oregon
    Posts
    2,308
    That looks great, that's not a common upscale.

    Frank

  28. #28
    Join Date
    14th February 2018
    Location
    Colorado
    Posts
    113
    It was quite the ambitious undertaking for sure - by far the most complicated build I have ever done. There are guys on this forum (especially in the High Power area) that make this look like a level one kit, hats off to those guys.
    But for me this was quite a masterpiece - sure hope it all goes as planned on launch day


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