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  1. A

    W16 engine made by Per Gillbrand

    Impressive stuff considering the complexity of this engine :) http://www.youtube.com/watch?v=-DijdisWkAE
  2. A

    Friction welding of valvestems

    Does anyone have experience with this kind of welding on small parts? I need valves with very slender and long valvestems. The idea is to buy grinded rod that is the correct dimension and frictionweld it to a little slab (that would become the "business" end of the valve) that i later can put...
  3. A

    Valvespring pressure and lift height

    How do I decide how big springtension the valvesprings should have? In this case it is a 13mm intake valve so It's not so small compared to modelengine standards. How about the lift? The cylinder is 30mm in diameter and about the same stroke. I was thinking 2,5mm on both exhaust and intake (no...
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