Hammerdown Posted November 17, 2015 Posted November 17, 2015 (edited) Scratch built 1/12th scale Jet Dragster that really goes, fire, smoke and all! Using styrene balloon straws I fabricated this Jet Dragster chassis. This car goes like stink, powered by C-class hobby rocket engine that slides into a PVC pipe inside the muffler tape covered, afterburner, tailpipe of the scratch built General Electric J85 jet engine. I run it down the street on a scale quarter mile length of fish line, anchored at both ends. after crossing the finish line the engine back fires and pushes out the parachute that slows the smoking machine. It's very cool to see and I entertain the neighbourhood regularly by match racing another version I have built. Edited November 17, 2015 by Hammerdown photos didn't download
Art Anderson Posted November 17, 2015 Posted November 17, 2015 Reminds me of the JETEX powered model car kits, both the balsa wood kits, and the Monogram "Salt Flats" car from about 1961 or so--you used a JETEX 50 rocket engine, which worked sometimes, less often than ideal--but they did scoot when everything was hooked up!Art
DrKerry Posted November 17, 2015 Posted November 17, 2015 Very kool, I have my old car I did this to when I was younger. I used the general Lee and have wings on it in an attempt to keep it on the ground. I never used tethers I just stood behind it and lit it up!!!! They are definatley kool to see in action!!!!!!!!!!
cobraman Posted November 17, 2015 Posted November 17, 2015 Once upon a time long ago the school I was going to had us build cars that were propelled by a CO2 cartridge. They did it in the gym. Never could do that now. They were run on a line and only went straight.
Sledsel Posted November 17, 2015 Posted November 17, 2015 PLEEEEEEESE do a video.X2I had built something similar with a Monogram 70 Boss 429 kit long ago. Used the body and a scratch built chassis. First run was an epic fail. Used nails in the asphalt parking lot with a line between...... but they were too close, car hit the second nail at full speed. Pretty cool to see though.
High octane Posted November 17, 2015 Posted November 17, 2015 Very cool build Bob as I've seen a number of jet dragsters run on the strip. I would love to see a video of your dragster "in action" also.
Chris in Berwyn Posted November 18, 2015 Posted November 18, 2015 This is a bit of model car abuse, but this AMT truck with Revell Magnum wheels has had some pretty good runs, compliments of Estes rockets!
Greg Myers Posted November 18, 2015 Posted November 18, 2015 JETX all over the web : https://www.google.com/search?q=JETEX+50+rocket+engine&espv=2&biw=1600&bih=775&tbm=isch&source=lnms&sa=X&ved=0CAgQ_AUoA2oVChMIzMij8JqayQIVhmMmCh2Tewat#imgrc=_
Jantrix Posted November 18, 2015 Posted November 18, 2015 Once upon a time long ago the school I was going to had us build cars that were propelled by a CO2 cartridge. They did it in the gym. Never could do that now. They were run on a line and only went straight. I did the very same thing here in Jr. High before they were all renamed "middle schools" in Florida. It was a wood and metal shop class. We were given a block of wood and we learned how to create a template for the top and side which we then cut on a band saw. A hole was predrilled in the back for the CO2 cartridge and we put screw eyes in the bottom so it could run along the string. I loved that class.
Greg Myers Posted November 18, 2015 Posted November 18, 2015 The World of Manufacturing, 1970-71. A Junior High School Industrial Technology Exemplary Program I taught that class my one year teaching Jr. High,
Hammerdown Posted November 19, 2015 Author Posted November 19, 2015 I have video just have to get it on this site. Hey Chris... I race you man, $50 or pink slips.
DrKerry Posted November 20, 2015 Posted November 20, 2015 I have video just have to get it on this site. Hey Chris... I race you man, $50 or pink slips.You Tube it and put up a link on here..
Burnout Posted November 21, 2015 Posted November 21, 2015 Oh man, I wish I hadn't seen this. I've got a big box of rocket engines just sitting around waiting to get used.How did you determine the length of line to lay out?
Chris in Berwyn Posted November 21, 2015 Posted November 21, 2015 Here is a link to a video of the rocket truck. https://www.youtube.com/watch?v=96UCh8zNx04Hammerdown, I think you will take my pinkslip if we race! Chris
Reegs Posted November 22, 2015 Posted November 22, 2015 JETX all over the web : https://www.google.com/search?q=JETEX+50+rocket+engine&espv=2&biw=1600&bih=775&tbm=isch&source=lnms&sa=X&ved=0CAgQ_AUoA2oVChMIzMij8JqayQIVhmMmCh2Tewat#imgrc=_ We had a blast with those back in the late '60s. I mounted one to an old Russkit inline brass chassis and spent many an hour attempting to set the land speed record.
Hammerdown Posted November 24, 2015 Author Posted November 24, 2015 Hey Burnout, after realizing how fast my early creations could go when they quickly ran out of line, I started running allot of extra line just so they stopped before the end anchor. The size of the chute also dertermined how quick they stopped.
DrKerry Posted November 24, 2015 Posted November 24, 2015 (edited) Here's a couple pics of my old one, had to dig it out..... I used a pnuematic air muffler for the end cap on the motor tube, that way when the engine kicked it's blast it just pops the motor out of the back of the car.... Wings were added for the fun of it as I was a kid then.... Needless to say the hood and grille were blown off as it went airborn a couple times and landed nose first!!! Edited November 24, 2015 by DrKerry
Hammerdown Posted November 25, 2015 Author Posted November 25, 2015 I guess we've all got our own version of this experiment somewhere in a closet. We should stage an Invitational Jet and Rocket Car national event... I can't imagine what might show up maybe Capt. Jack Mcclure!https://www.youtube.com/watch?v=m_g-X0yMBWQ
DrKerry Posted November 25, 2015 Posted November 25, 2015 LOL, ya never know. Expect the unexpected!!!!
Hammerdown Posted November 26, 2015 Author Posted November 26, 2015 Sorry for the crappy video guys, I've got some others that I'll have to find and post. The neighbour at the end of the video is known as... "The Count" lol
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