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Recent content by jaymaec

  1. jaymaec

    DI Engines

    http://www.citroen.co.uk/level4/technicalSpecification.asp?pagetype=c5&lhn=c5 and http://www.citroen.co.uk/level4/generalpage.asp?pagetype=techcurrent#top HPi-DIRECT INJECTION PETROL ENGINE Citroën has introduced a new high-pressure direct injection petrol engine, the first engine of this...
  2. jaymaec

    DI Engines

    Direct injection of petrol (gasoline) a failure? Citroen and Peugot seem to be using it now- are they slow learners, or ahead of the pack?
  3. jaymaec

    DI Engines

    the current gasoline engine burns a very large percentage of the fuel, only a very small amount ends up as CO or HC, etc. The efficiency has to do with thermodynamics, not air-fuel mixing. so, you want to carry liquid Oxygen around? I don't think so! anyway, the Oxygen and fuel act as a heat...
  4. jaymaec

    Windage trays

    Hi, Rod I gather you don't want to (or can't?) run a real dry-sump system - oh, yes- the trans shares oil! As you describe it, any air that gets into the oil must continue to go with it, as there is no escape route. What if you provide a small inline can or tank (not with fill opening!) where...
  5. jaymaec

    Tire pressure v load, and deflection

    wouldn't the deflection reduce at speed? and the pressure also will increase some as the tire warms up. Hmm - the measurements still won't tell us the "proper" pressure at a given load, 'cause we don't know the ideal deflection? - should we also look at the tire patch shape as...
  6. jaymaec

    Torque Converter Transmission

    never heard of it- which doesn't mean it hasen't been done! The Buick dynaflow was a multi-element torque converter with a two-speed planetary box. Normal operating mode was startin direct (high gear) and the converter did all the work. around '56 they went to a variable-pitch stator (the...
  7. jaymaec

    A manual on Yamaha Scara Robot programming

    If any of the sales network still exists over here, they may be able to put you in touch with another user. Likewise, any of the old techs here might either have a manual or know someone who would. Who built that unit? Scara sounds Italian- did Yamaha market someone else's system? (At Amada...
  8. jaymaec

    Firestone AT Tires

    Hi, Rod I think the problem with three-wheelers lies in expectations and appearances: 1. it sits upright, so anyone can sit on it, and think maybe they can ride it. A bike falls over, and never leads you to believe it won't. 2. The trike requires skill to ride, contrary to initial expectations...
  9. jaymaec

    Tire pressure v load, and deflection

    If you find a source of info, I'd like to know about it! Thanks Jay
  10. jaymaec

    Firestone AT Tires

    I know this is an old thread, but- Driver's manual / owner's manual? I had a Yamaha Tri-Z (3-wheeled ATV) a while back. Only suitable for unpaved sufraces, 'cause with two wheels in back connected with a single axle, it REALLY had poor handling on pavement. However, on dirt or sand, no...

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