Rocket car on J motor reaches 626 mph

Discussion in 'High Power Rocketry (HPR)' started by hartrockets, Oct 25, 2016.

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  1. Oct 25, 2016 #1

    hartrockets

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  2. Oct 25, 2016 #2

    hartrockets

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  3. Oct 25, 2016 #3

    hartrockets

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  4. Oct 25, 2016 #4

    ttabbal

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    Pinewood Derby, crazy edition. :)

    Pretty cool though. Was it on a rail or something to keep it on the ground?
     
  5. Oct 25, 2016 #5

    BDB

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    Holy crap!
     
  6. Oct 25, 2016 #6

    blackjack2564

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    Looks like a ton of blocks piled up behind the car, with cable stretched to other end.

    You can see sparks seem to bounce off cable under thrust, in slo-mo version.
     
  7. Oct 25, 2016 #7

    hartrockets

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    Yes car was on a 600 metre guide wire.
     
  8. Oct 25, 2016 #8

    Fred Garvin

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    That's pretty cool.....I've been thinking about getting a couple Blurz cars to setup in the parking lot outside our clubhouse. Just a fun thing to do after meetings. Might even bring in some new interest to Rocketry.

    But that J car...wow....really gives a point of reference to "took off like a rocket"...
     
  9. Oct 25, 2016 #9

    HVArcas

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    awesome, kind of surprised it stayed subsonic but there must be plenty more drag than on our rockets
     
  10. Oct 25, 2016 #10

    rstaff3

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    That was awesome. I have read about the old school HPR rocket cars but had never seen one in action.
     
  11. Oct 25, 2016 #11

    hartrockets

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    We think the car went Mach 1 last time, and the audio has been checked by experts and they agree that's it went through Mach.

    See and listen to the video here

    https://youtu.be/akKKMTJQjYc

    Listen a few times and you will hear a gunshot sound at the start which people and audio experts are saying is the sound barrier being broken.


    We think the car yesterday hit something on the track which caused it to roll onto its roof, causing some damage.

    This probably effected its top speed.

    The other videos and data collected is still being looked at.

    Lastly a new car is being built and will be run early in the new year, with the aim to break 1,000 mph
     
    Last edited: Oct 25, 2016
  12. Oct 25, 2016 #12

    Tim51

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    Very nice, Pete. Are there any close up pictures of the car itself?
     
  13. Oct 25, 2016 #13

    hartrockets

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    ImageUploadedByRocketry Forum1477417748.399420.jpg

    Here is the car before it's first run a few months ago.
     
    Last edited: Oct 25, 2016
  14. Oct 25, 2016 #14

    hartrockets

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    Here's one of the few photos I took yesterday about 30 mins before launch. ImageUploadedByRocketry Forum1477417963.680948.jpg
     
  15. Oct 25, 2016 #15

    hartrockets

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    Here's the car after the run. ImageUploadedByRocketry Forum1477418126.374487.jpg
     
  16. Oct 25, 2016 #16

    Tim51

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  17. Oct 25, 2016 #17

    neil_w

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    Hot damn that is impressive. Thanks for posting!
     
  18. Oct 26, 2016 #18

    dhbarr

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    Very cool! Any details on the finish line / braking system?

    Shout out from the 1995-1996 Nevada Rocketcar Racing Association (ret.)
     
  19. Oct 26, 2016 #19

    rstaff3

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  20. Oct 26, 2016 #20

    CoyoteNumber2

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  21. Oct 26, 2016 #21

    rstaff3

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    Apparently, but it must not have caught on. There was a company that sold kits (parts?) called Hell on Wheels. It was run by the guy behind Extreme Rocketry magazine.
     
  22. Oct 26, 2016 #22

    kcobbva

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    My son and I throw you Four THUMBS UP! That's so cool! Sure beats the estes rocket cars we have in the basement from many years ago!!!!
     
  23. Oct 26, 2016 #23

    hartrockets

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    The car uses a set of parachutes and lengths of foam pipe lagging fixed around the guide wire to slow the car.
     
  24. Oct 26, 2016 #24

    REK

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    Dang that is awesome, how about next time slapping in a Vmax. Man that thing will disappear on one of those lol.


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  25. Oct 26, 2016 #25

    hartrockets

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    Don't think you can get a vmax in pro 38 6GXL 😀 or at least not in the U.K.
     
  26. Oct 26, 2016 #26

    dhbarr

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    Product or project?

    Pics?
     
  27. Oct 26, 2016 #27

    CoyoteNumber2

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    I remember Hell on Wheels, but had no idea Brent McNeely was behind it. That must have been, what, 1997-98?
     
  28. Oct 26, 2016 #28

    rstaff3

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    Maybe a little after as I saw a report in HPR mag and I did not get it until '99 or 2000.
     
  29. Oct 26, 2016 #29

    pyrobob

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    Wow, that brings back memories. I recall some ads in HPR many years ago.
     
  30. Oct 26, 2016 #30

    REK

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    Well largest J Vmax you can get ahold of will still be insane lol.


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