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L3 "Sky Thumper"


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  1. #1
    Join Date
    13th April 2009
    Location
    East TN
    Posts
    46

    L3 "Sky Thumper"

    Well, as some of you may remember back in 2007 I attempted my level 3 at Southern Thunder. Beautiful flight, great event at apogee, but come 1200' we could all hear the pop of the charges going off...but the sheer pins...didn't sheer all the way and snagged my main chute. It never pulled all the way out. Long story short, I was going to make repairs but it couldn't happen for a while due to circumstances. Now, years later, it's time - and it will happen. Sadly "Lactose Intolerant" and many others of my old fleet were taken (long story) so this will be an entirely new build.

    Last beauty was a 9' extended 5.5" diameter LOC Big Nuke 3E with G10 fins that flew to a nice 10,500'. This time around I'm going with an extended 10" Polecat Thumper, hence its new title "Sky Thumper". I have already put a longer 98mm motor tube in it and will be doing 3 layers of glass tip to tip over the fin can and another 3 layers of glass tip to tip over the body tube. She's just a tad over 12' tall, 10" diameter and purdy. Still debating paint scheme.

    Two altimeters - Stratologger and the new RRC2. I will be using a SkyAngle chute (size to be determined, depending on how heavy she is when I get closer!) with 4k lb test tubular nylon. First flight will be on an M1297W (once again, pending final weight - but we should be good). I'm expecting somewhere between 3300-4000'.

    Pictures to follow. Would have started earlier but schedule has been crazy. I wanted something bigger and slower. Thumper was the answer.
    TRA 11362

  2. #2
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    12,300
    I built the nike smoke. Mine weighted in at 49 lbs empty.

    Nice kits - easy to build.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3 Prefect ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 2250 but back in the USA. Builds starting today!!!!
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com/ind...erid=$1-ChuckH

  3. #3
    Join Date
    20th February 2009
    Location
    Cayuga, Indiana
    Posts
    7,102
    Quote Originally Posted by cwbullet View Post
    I built the nike smoke. Mine weighted in at 49 lbs empty.

    Nice kits - easy to build.
    Chuck do you know what the deal is on the 10" Nike Smoke? I tried to order one back in December and was told they were out of nosecones. Recently I looked again and now it's been pulled from What's Up Hobbies website?!
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  4. #4
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    12,300
    I think he needs to male a new mold.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3 Prefect ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 2250 but back in the USA. Builds starting today!!!!
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com/ind...erid=$1-ChuckH

  5. #5
    Join Date
    11th February 2009
    Location
    Oregon
    Posts
    673
    Quote Originally Posted by cwbullet View Post
    I think he needs to male a new mold.
    I don't think I want to know....
    Currently fighting a severe case of "Analysis Paralysis"
    L1 - Binder Design Thug * Aerotech H123W / L2 - Binder Design Excel Plus * Aerotech J350W
    2013 Stats
    *Number of Flights: 29
    *Total Impulse: 19,088.56 Ns (86% N)

  6. #6
    Join Date
    13th February 2012
    Posts
    4,692
    Well most people make molds from male parts, so it could be considered "maleing" them?
    Temporarily potential impulse transformed into no-longer-potential-anymore impulse since 2013-01-01: A lot.

  7. #7
    Join Date
    22nd January 2009
    Location
    Santa Barbara
    Posts
    527
    Nice choice!! I did my Level III with a 10" Thumper. Unless you just like fiber-glassing or want the experience the Thumper is a beast and isn't going to break Mach and shouldn't need any tip 2 tip. I've flown mine a few times at Lucerne dry lake were its like landing in a paved parking lot and so far no fin problems
    Last edited by AHansom; 5th September 2012 at 12:10 AM.

  8. #8
    Join Date
    22nd January 2009
    Location
    Santa Barbara
    Posts
    527
    I see he's also pulled the Thumper from the website. Jack's the vendor at the launches I attend so I guess Ill have to ask him "What's Up"

  9. #9
    Join Date
    30th January 2009
    Posts
    1,546
    Quote Originally Posted by AHansom View Post
    I see he's also pulled the Thumper from the website. Jack's the vendor at the launches I attend so I guess Ill have to ask him "What's Up"
    Nick DeBrita
    Active Duty Navy E6/FC1
    NAR #81410 L3 TRA #12809 L3
    Motor Usage 2012: 96,465 N.sec 18% Q

  10. #10
    Join Date
    4th October 2011
    Location
    Highlands Ranch, CO
    Posts
    14
    I just bought a 10" Nike Smoke from what's up about a month ago. Sitting downstairs waiting for me to finish my L3 proposal.

    Ted Apke
    TRA 3726

  11. #11
    Join Date
    20th February 2009
    Location
    Cayuga, Indiana
    Posts
    7,102
    Quote Originally Posted by tedapke View Post
    I just bought a 10" Nike Smoke from what's up about a month ago. Sitting downstairs waiting for me to finish my L3 proposal.

    Ted Apke
    TRA 3726
    Ayyy yahhh!!!! Jack was supposed to notify me when he got them back in!!! WHAT'S UP?!!!!
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  12. #12
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    12,300
    Quote Originally Posted by AHansom View Post
    Nice choice!! I did my Level III with a 10" Thumper. Unless you just like fiber-glassing or want the experience the Thumper is a beast and isn't going to break Mach and shouldn't need any tip 2 tip. I've flown mine a few times at Lucerne dry lake were its like landing in a paved parking lot and so far no fin problems
    I agree with this. I built my nike without tip to tip without and problems.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3 Prefect ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 2250 but back in the USA. Builds starting today!!!!
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com/ind...erid=$1-ChuckH

  13. #13
    Join Date
    13th April 2009
    Location
    East TN
    Posts
    46
    Quote Originally Posted by AHansom View Post
    Nice choice!! I did my Level III with a 10" Thumper. Unless you just like fiber-glassing or want the experience the Thumper is a beast and isn't going to break Mach and shouldn't need any tip 2 tip. I've flown mine a few times at Lucerne dry lake were its like landing in a paved parking lot and so far no fin problems
    Very nice! Do you have some photos of some of your flights?

    The extension is simply another one of Jack's 48" body tubes. I plan on flying her on some larger motors, like the N5800, so I figured a little bit of fiberglass on the fin can wouldn't hurt.
    TRA 11362

  14. #14
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    12,300
    My wife has decided to build a thumber as is for her level 3. I am very happy to see that she has decided to make the jump.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3 Prefect ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 2250 but back in the USA. Builds starting today!!!!
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com/ind...erid=$1-ChuckH

  15. #15
    Join Date
    22nd January 2009
    Location
    Santa Barbara
    Posts
    527
    Quote Originally Posted by MitchR View Post
    Very nice! Do you have some photos of some of your flights?

    The extension is simply another one of Jack's 48" body tubes. I plan on flying her on some larger motors, like the N5800, so I figured a little bit of fiberglass on the fin can wouldn't hurt.
    Sounds like lots of fun. N sized motors arn't allowed in CA. so N's were never on my list for this rocket. I ended up using a Aerotech M1850 to cert on. Will you be glueing the airframes together or will you be able remove the extension and fly it as a regular thumper? There used to be a photographer named Gary Moratz that would come out to the ROC launches so I only have some pictures he took from my level III launch.
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  16. #16
    Join Date
    13th April 2009
    Location
    East TN
    Posts
    46
    Quote Originally Posted by AHansom View Post
    Sounds like lots of fun. N sized motors arn't allowed in CA. so N's were never on my list for this rocket. I ended up using a Aerotech M1850 to cert on. Will you be glueing the airframes together or will you be able remove the extension and fly it as a regular thumper? There used to be a photographer named Gary Moratz that would come out to the ROC launches so I only have some pictures he took from my level III launch.
    Unless I change my mind I have it designed right now so that the extension tube bolts onto the electronics bay. So it goes Nose cone - body tube - e-bay - booster right now. I ordered extra 10" diameter stiffy tubes to go inside of the tube to strengthen the overall rocket and add some more weight.
    TRA 11362

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