Results 1 to 7 of 7
  1. #1
    Senior Member
    Join Date
    09.07.12
    Location
    covington ga
    Posts
    307
    Liked: 81

    Default Flat Shifters now legal for Motorcycle cars

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	download.png 
Views:	1035 
Size:	86.4 KB 
ID:	98728  

  2. #2
    Senior Member
    Join Date
    10.24.12
    Location
    Charlotte, NC
    Posts
    617
    Liked: 249

    Default

    Clint,

    Thanks to you and whoever else got this clarification approved. It's been a grey area in the rules, especially since most every 4-stroke car has at least a mechanical blipper already.

    The only problem is we'll now have to come up with a new topic for our "who's cheating" discussions.

    Cory

  3. The following members LIKED this post:


  4. #3
    Senior Member Farrout48's Avatar
    Join Date
    04.22.17
    Location
    Florida
    Posts
    248
    Liked: 137

    Default

    That looks a lot like the P2 limitation. There are only a couple of systems that meet P2 requirements. This is a great advancement for the F600 guys.

    I run a Flatshifter Expert in P2. Simple and lower (relatively) priced system. A load cell in line on the shifter cable provides the signal to either activate the cut-out on upshift or the vacuum generated blip on downshift. One of the good things is that if the load cell or system quits working, the car can still be shifted in a pure mechanical mode and your race weekend is not over. Easy to install. I believe that it makes life a lot easier on the chain. Certainly easier to shift than a purely mechanical cable set-up. Does it make the car faster? Some say yes. Some say it is more on the driver to be faster.
    Craig Farr
    Stohr WF1 P2

  5. #4
    Classifieds Super License TDI PILOT's Avatar
    Join Date
    10.13.13
    Location
    Lapeer, MI
    Posts
    339
    Liked: 91

    Default Blippers?

    What about the vacuum powered throttle blippers used on some "flatshifter" systems to aid in downshifting? This type of system does not have a mechanical linkage from the gas pedal to the throttle body, it controls the throttle position independently of the drivers inputs.


    6. Mechanical throttle mechanisms must be used on all engines. Computer, electronic or pneumatic control of the throttle position is not permitted.

  6. The following members LIKED this post:


  7. #5
    Contributing Member lowside67's Avatar
    Join Date
    02.06.08
    Location
    Vancouver, BC, Canada
    Posts
    472
    Liked: 255

    Default

    Quote Originally Posted by TDI PILOT View Post
    What about the vacuum powered throttle blippers used on some "flatshifter" systems to aid in downshifting? This type of system does not have a mechanical linkage from the gas pedal to the throttle body, it controls the throttle position independently of the drivers inputs.


    6. Mechanical throttle mechanisms must be used on all engines. Computer, electronic or pneumatic control of the throttle position is not permitted.
    The vacuum powered blipper actually moves a pushrod which then pushes on the throttle mechanically. I suspect it'd be legal.

    -Mark
    Mark Uhlmann
    Vancouver, Canada
    '12 Stohr WF1

  8. #6
    Contributing Member GBugg's Avatar
    Join Date
    08.12.05
    Location
    Huntsville, AL
    Posts
    261
    Liked: 69

    Default

    This is a rule change, not a clarification.
    George Bugg
    -----------------------------
    NovaKar
    F600

  9. #7
    Senior Member
    Join Date
    06.02.02
    Location
    St Charles, Mo
    Posts
    546
    Liked: 159

    Default flatshifter

    If you are a left foot braker, it is fairly easy to lift on upshifts and blip on downshifts yourself.. If doesn't take long to get good at it....so additional aids are not really needed.

    However, the flatshifter does make it easier for a driver to adapt to a motorcyle engined car..

    In F1000 it has become the norm. i sometimes wish it had not. Something else to maintain.....but it is a ton more reliable than solonoid or air shifters.

    Jerry Hodges
    JDR Race Cars
    North American Formula 1000
    636-399-7060

  10. The following members LIKED this post:


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
  •  




About Us
Since 2000, ApexSpeed.com has been the go-to place for amateur road racing enthusiasts, bringing together a friendly community of racers, fans, and industry professionals. We're all about creating a space where people can connect, share knowledge, and exchange parts and vehicles, with a focus on specific race cars, classes, series, and events. Our community includes all major purpose-built road racing classes, like the Sports Car Club of America (SCCA) and various pro series across North America and beyond. At ApexSpeed, we're passionate about amateur motorsports and are dedicated to helping our community have fun and grow while creating lasting memories on and off the track.
Social