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  • Users: skenn
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  1. skenn

    Motorcycle steering

    Hanging off can't affect lateral load. That is purely mass and angular velocity. It only affects how far up the side of the tyre the load acts.
  2. skenn

    Motorcycle steering

    OK, so I was wrong...weight shift can make it turn .. depending on the geometry :-) .
  3. skenn

    Flywheel structural questions

    Philosophical, and pertinent. It was with this consideration, that one of my earlier posts compared the device to a fragmentation grenade, though even "anti-tank-mine" may be underestimating the damage wrought by such a device. Partly due to the responses in this forum, safe distribution...
  4. skenn

    Flywheel structural questions

    To sreid, Thanks for the pointer, I'll have a look. To ccfowler, Can you elaborate of the failure you experienced...how big was the wheel, how fast, what failed etc ?. How much TNT would contain/release 1GJ !.
  5. skenn

    Flywheel structural questions

    I stand, or sit, forwarned. We do have an experienced mechanical engineer, and an engineering comapny involved in this as consultants. They(in South Africa) will be dealing with that side of the project. I'm sorry to hear of your direct involvement with failures. Hopefully, due in part to...
  6. skenn

    Flywheel structural questions

    I AM well aware of the frightening amount of energy stored( 1GJ ?) in a/this flywheel, so 1) I intend to test to destruction, at least one...in a container, in the sea !. 2) The unit will be limited to less than half the failure speed, or 10k rpm..whichever is lower. 3) The unit, in use, will be...
  7. skenn

    Motorcycle steering

    I like the term "Ice cream cruisers"...someone on of our TV chatshows said... a Triumph(referring to the old Company..before the name was revived) is a motorcycle...a Harley is a fashion accessory. I wouldn't go QUITE that far, but I never had the desire to own a Harley. I had wanted a Pantah...
  8. skenn

    Motorcycle steering

    Like a magazine report years ago, comparing a Guzzi with a big honda..both handled like they were on rails....the difference was that the rails the Guzzi was on went round the bends...the honda's ones were dead straight, regardless :-) . I think Choppers are for long straight roads !. S.
  9. skenn

    Motorcycle steering

    I think I'd better keep quiet about my opinion of choppers !. It would seem taht well balanced bikes would be largely imune to weight-shift alone. No offence intended to vintage machines. I CAN get my Duc to turn, but only with a series of nudges...just leaning out has almost no effect, as...
  10. skenn

    Motorcycle steering

    Does it realy work, other than for a few yards ?. Could you actually negotiate a bend like that ?. I find that I just get a very brief wiggle('81 Duc Pantah), but as you say...pinky against the bars is plenty !. Maybe I should have said a WIDE, straight, empty road.
  11. skenn

    Flywheel structural questions

    Help please... I am designing a flywheel energy storage system, and need to know... how to calculate the tension in a solid ring when it is spinning. Think of it as a segmented flywheel...what tension would a band round the outside have to deal with ? assume 1 tonne, with effective diameter of...
  12. skenn

    Motorcycle steering

    I'm sure this has been discussed before It is all down to the effective combined forces of gravity, and centrifugal force caused by turning, and it's position relative to the tyre contact points. Try 2 experiments....on a straight, empty road. Try to steer by weight shift only..it doesn't...
  13. skenn

    SAW resonator/oscillator

    Can anyone advise me on the best oscillator circuit to use with a 2-port SAW resonator ?. TIA Shane
  14. skenn

    AC - DC controller/psu chip

    Dang...almost !. I need 24V...or 400mA@12V. Maybe still workable...thanks sreid
  15. skenn

    AC - DC controller/psu chip

    I don't want to use bricks, because my solution will be ceiling mounted, maybe inside the lamp (LEDarray) fitting it'self
  16. skenn

    AC - DC controller/psu chip

    Has anyone come across a device for lowpower mains AC to DC conversion ?. I am looking for 250mA@12V from 230VAC for lighting pwuposes(isolation not a concern) TIA Shane
  17. skenn

    Need help with microstrip antenna design

    Initially, at least, this will be for experimental (non-certified)a/c. When we're up n running, we may look at certification
  18. skenn

    Need help with microstrip antenna design

    The true "Force" !!. I do anything from welding (that is a power transmitter !), machining, Mechanical CAD, Digital, building aircraft :-) , boats, (classic)mo'bikes etc, but this is my first serious foray into RF. My college days were 25 years ago, and almost all that I now know has come from...
  19. skenn

    Need help with microstrip antenna design

    Thanks debodine, you got that in one !. I do like to push my limits tho, so I would prefer to see the calculations, and methods used. This project is partly to extend my knowlege, and part commercial development. For OEM use, a "home-grown" solution would probably work out more economical...
  20. skenn

    Need help with microstrip antenna design

    Hi Y'all. I need help, or someone to design an antenna(moderate financial reward offered), or pair for Tx @ 1090MHz, Rx @ 1030MHz. Omnidirectional. Is it practical to have a single unit for this spread ?. What tradeoffs on gain ? Streamlined enclosure is anticipated, so an @in-line@ pair may...

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