Recent content by Craigster

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  1. Craigster

    New HD Sportster faster than a Gen1?

    I've seen it on a Dynojet Dyno. It's about 112 hp and 84 ft-lbs of torque. It makes better than 70 ft-lbs everywhere in the rev range so the torque curve is fairly flat and thus accelerates like 2005 GSX-R1000 through the midrange (Where it makes about the same torque/hp as the GSX-R). I...
  2. Craigster

    megasquirt fi? anybody got it?

    Megasquirt works fairly well. I was one of the members in the group buy for the first 100 board spins we had made. (After everyone left the EFI-332 board). I converted a carbureted Buell to EFI, replaced a 32 bit Suzuki Hayabusa ECU with Megasquirt, and Fuel injected an NHRA Prostock Harley...
  3. Craigster

    09 dyno pull

    Correction factors: SAE -- The SAE standard applied is a modified version of the SAE J1349 standard of June 1990. Power is corrected to reference conditions of 29.23 InHg (99 kPa) of dry air and 77 F (25°C). This SAE standard requires a correction for friction torque. Friction torque can be...
  4. Craigster

    RIP - Designer of Vmax DIES

    Just read this on Cycle World.com Sad news. Godspeed Kenji.
  5. Craigster

    Variable runner intake

    My mistake. The machine was actually a 1993 not a 1992. Here you can see the EFI throttle bodies in place of carbs with injectors peeking out, the elevated "tank" cover to clear the air filter and the horrible Innovate Air Fuel monitor in the pipe and controller on the tank. I tried to...
  6. Craigster

    Variable runner intake

    The mechanism
  7. Craigster

    Variable runner intake

    Long stacks up, exposing short stacks for top end.
  8. Craigster

    Variable runner intake

    Long stacks down for low end power
  9. Craigster

    Variable runner intake

    I'm glad you enjoyed reading the results. I've had the good fortune (I'd say pleasure, but sometimes it's torture) to work with some very innovative people / teams. As one owner said, "It's not about buying the same thing as everybody else when you're racing at the top level. It's about...
  10. Craigster

    Variable runner intake

    And I agree. I would not remove the variable runner. I would come up with another way to breathe better without removing the variable runner intake. Good for you for developing a real work around.
  11. Craigster

    Variable runner intake

    The video you show is effectively what this system is. Only several years earlier - on a Gen I! Although i will say, that I saw the same type of system on an MV Agusta about the same time.
  12. Craigster

    Variable runner intake

    I asked if the owner was sharing any of this online. He said no. I guess there was some discusion about it back in the day, but a lot of naysayers. As there is always is with forums. Lots of experts who already know it won't work, so he just developed it himself and kept it to himself...
  13. Craigster

    Variable runner intake

    Here's a comparison to a guys '88 with just exhaust.
  14. Craigster

    Variable runner intake

    In the end, he made a peak of about 133 to 134 hp on a motor with this intake and a modified stock exhaust (gutted cans with Supertrapp end caps adapted to the ends of the cans for tuning).
  15. Craigster

    Variable runner intake

    This is all the curves overlaying each other. The blue is the system fully active. Notice how the blue curve runs along withe the green curve up to 7500 rpm. then as the long stacks are lifted out of the way, the blue curve departs the green and continues up along the the red curve.
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