Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Page 2 of 2 FirstFirst 1 2
Results 11 to 13 of 13

Thread: Racecar hood flips open midrace - GIF

  1. #11
    Supporting Member
    Join Date
    Sep 2018
    Thanked 94 Times in 75 Posts

    nova_robotics's Tools
    Quote Originally Posted by Saltfever View Post
    [B]While approaching the lights at Baylands (a drag strip in Fremont Ca) an explosive force suddenly thrust my hood straight up into 128 mph air. Evidently the air coming through the grill pressurized the engine compartment enough to blow the latch.
    That is genuinely interesting. I would have figured Mr. Bernoulli would pop it up a little bit, like 15 or 20 degrees or something. Very interesting.

    173 Best Homemade Tools eBook

  2. #12
    Supporting Member Saltfever's Avatar
    Join Date
    Apr 2012
    Thanked 71 Times in 44 Posts
    I agree it seems logical to only crack open a little bit. However, I think it is aerodynamics at play. There is probably some kind of bow-wave coming over the front end and the wave is quite high with a low pressure are directly above the hood area. That low pressure area may be a few feet high. It also could be due to a ratio between the front grill area vs. the hood area. A large volume of pressurized air coming through the grill acting on a rather small hood. It was an extremely strange phenomena because I don't remember the hood dropping down when I slowed significantly. But maybe serious deceleration was holding it open at some point!

  3. #13
    Supporting Member hemmjo's Avatar
    Join Date
    Feb 2017
    Thanked 449 Times in 272 Posts

    hemmjo's Tools
    As we all know, bit of air moving over/under a large surface can lift things of significant size...

    173 Best Homemade Tools eBook

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts