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  • Users: PTwizz
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  1. PTwizz

    Frequency Selective Damping

    Following McLaren Racings announcement that they are using Koni FSD dampers on F1 cars, does anyone have an opinion on how the claims made for FSD (seperation of hub and body modes) apply to a race car?
  2. PTwizz

    Energy cost of manufacturing small car

    Despite some time spent searching the web, I have been unable to find any figures for the cost, in terms of energy consumption, CO2 output etc, of manufacturing a new small car. The question arose out of a discussion in which it was suggested that I should replace my 1966 Landrover with a...
  3. PTwizz

    Thermodynamics of Stirling engines

    Can anyone point me to a source of information on thermodynamics specific to Stirling engines, specifically heat transfer between sufaces and gasses? Thanks, Pete.
  4. PTwizz

    Alternator design

    Hello good people, I would like to know if it is possible to convert a dynamo (field wound, not permanent magnet type) to operate as an alternator. The hardware appears to have the required elements, suggesting that I might be able to convert from commutator to slip rings, and excite the field...
  5. PTwizz

    Steer by Wire

    I have recently read that GM are developing and seeking approval for a steer by wire system for road cars. I have no experience in the specific field of electronic control systems as applied to road cars. I wonder if anyone can tell me what great leap forward in technology guarantees that such...
  6. PTwizz

    fusion welding aluminium 7075

    I would like to know what would be the effect of using a 'fusion welding' process on aluminium 7075-T6 with respect to the materials mechanical properties. The process involves heating to 380°C for the time taken to carry out the 'welding'(probably of the order of 5 minutes). I have plenty of...
  7. PTwizz

    Motorcycle front suspension design

    I am in the early stages of designing a race motorcycle front suspension. Looking at those available, all appear to have a bottom yoke substantially thicker than the top yoke, with up to four pinch bolts on each side, clamping the fork legs. A couple of simple force diagrams show that a stiffer...

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