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  1. drakem4

    NEED HELP - Geometry for Skateboard Truck Design

    3DDave thank you for your input! I think the main consideration for having the boards COG lift under turning is to prevent speed wobble. I want the board to be really stable at high speeds, from my understanding, the faster the board goes, the more stable it is with this condition (a rising...
  2. drakem4

    NEED HELP - Geometry for Skateboard Truck Design

    Hey everyone! So I'm trying to design a surf-style skateboarding truck for my electric skateboard. It is a pivoting design unlike a traditional kingpin. I've read and heard that other designs have been created so that when the truck is turning, the center of gravity lifts up on the board, so...
  3. drakem4

    Help choosing piston configuration (making dream engine blueprint)

    Rotary valve 2-stroke engine :) Look at the Mercedes-Ilmor 2-stroke Rotary Valve V8 that was banned from F1
  4. drakem4

    WPC and Cryogenic Treatment for Forged Aluminum Components

    Fantastic information in this thread, thank you to all who have responded. The shot peening company (WPC) has recommended to use cryo treating before their process, and Frederick you are recommending to use it after? My question to you would be have any of the valve springs that you treated been...
  5. drakem4

    WPC and Cryogenic Treatment for Forged Aluminum Components

    WPC is not just a shot peening procedure, it has nano sized particles that make a surface that can hold oil to help with lubrication. That is its main benefit which should help with abrasion resistance. And for reliability of this engine I will most certainly need materials that resist...
  6. drakem4

    Help choosing piston configuration (making dream engine blueprint)

    What about opposed piston opposed cylinder? Seem to be the next big thing in engine design https://www.youtube.com/watch?v=uP7gGUCPJj0
  7. drakem4

    WPC and Cryogenic Treatment for Forged Aluminum Components

    Could poor or negative results possibly be the cause of improper processing? I know that the proper processing requires lengthy (even 72 hours) for the complete gradual deep freeze and return. When you say sometimes it works sometimes it doesn't, by doesn't do you mean adverse effects or just...
  8. drakem4

    WPC and Cryogenic Treatment for Forged Aluminum Components

    Hello everyone! I am building a small displacement high output 2-stroke engine right now and the goal is for it is to have excellent abrasion resistance (low wear) and be very reliable. The components that I will be treating are mainly the piston and rings, cylinder lining (aluminum with...

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