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  • Users: jkdmag
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  1. jkdmag

    Piston Pin Bushes

    Interested in the opinion of others as to the practically, and suitable materials, for the manufacture of bushes to be inserted into a piston pin boss to allow use of a smaller piston pin. Hoping to adapt a piston with 16mm pin to a crankshaft with 14mm pins. Initially thought bronze to be a...
  2. jkdmag

    Paint Over Electroless Nickel

    Planning to electroless nickel plate the inside surface of an aluminum tube. Want to paint the outside surface. Apparently more economical to plate the complete tube than mask to outer surface. This raises the question, can electroless nickel be painted and if so which paint types will...
  3. jkdmag

    PTFE and Anodized Aluminium Surfaces

    Hoping for an explanation as to the advantages of low friction/wear surfaces on motorcycle fork legs. Current designs have PTFE coated bushes working with hard chromed steel and aluminium tubes, in an oil environment. Marketing claims are made for significant improvement in wear and friction...
  4. jkdmag

    Motorcyle Fork Low Friction/Wear Surface

    Hoping for an explanation as to the advantages of low friction/wear surfaces on motorcycle fork legs. Current basic designs have PTFE coated bushes working with either hard chromed steel or aluminum in an oil environment. Claims are made for significant improvement in wear and friction...
  5. jkdmag

    Cam Chain Noise

    Interested in experts opinions as to likely source of engine noise that only occurs between gear changes. My suspicion is that it is cam chain/tensioner noise when the load comes off the engine. It is a thrashing sound that is not noticeable during normal steady state running. The ALDL data...
  6. jkdmag

    Motorcycle Shock Velocity Histogram

    This appears to be a subject of great interest now in race and road car suspension performance. Had thought it should have application to motorcycles also. Assist in shim selection for those doing shock/fork re-valving by providing real world quantitative data. A practical proposition?
  7. jkdmag

    Big Overbore Limitations

    Would be interested in the opinions of the experts on the limit to size of an overbore when the combustion chamber remains the same size. How large can the overlap be at the head/bore junction be before the increased risk of detonation becomes critical. The size of the overlap I am...
  8. jkdmag

    Monotube Damper Without Piston Compression Stack

    Interested in the opinion of the experts on the necessity of compression shim stack on the piston of a monotube damper with high speed compression shim stack /adjuster fitted to the remote canister. To my untrained mind it would appear that as the flow of oil displaced by the rod is controlled...
  9. jkdmag

    Supercharger Calculations

    Have questions regarding supercharger calculations including intercooler type selection. First part, my calculations indicate that an SC14 supercharger is capable of supplying at least 10 psi boost to a 3.8 litre engine, notwithstanding many comments to the contrary on the internet. The...
  10. jkdmag

    DIY Wheel Alignment

    Need to know if the thrust angle is parallel to vehicle axis. If a two wheel only alignment is performed and the thrust angle is not parallel to the axis of the vehicle there will be a need to steer against the thrust angle. This will mean the tyres will toe-out when travelling in a straight...

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