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Maru-So

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Posts posted by Maru-So

  1. Nice development work on the airbox!

     

    Something about that long airbox simulation is ringing warning bells for me. 

     

    Shouldn't there be some boundary layer effects visible? 

     

    I would expect to see some effects akin to fluid flow between two plates (but 3D) what does the velocity contour look like? 

  2. You need to read some books

     

    Race car chassis - Design and construction by Forbes Aird is one I would recommend.

     

    It's easy to read and has plenty of real world advice that you really need. This book will explain in layman's terms how you design a chassis (even a simple one) taking into account the loads that said chassis will experience. 

     

    After that maybe Tune to win by Carrol Smith. This book will help you understand the basics of suspension and steering systems. 

     

    Nothing you've done thus far is safe or functional. Harsh but true.

     

    I mean even fundamental stuff, like you've welded the chassis with a gassless mig. 

     

    Gassless mig's do a shit weld to start with, then i bet every weld's been stop-start  forming heaps of cold brittle point and undercuts, all nice stress concentration points. Then you're going to hard mount a 

    vibrating engine to the frame. 

     

    The flat, twin beam chassis has no real torsional stifness and will flex. 

     

    Between the flexy chassis and the engine vibrations the welds don't stand a chance. 

     

    You would have been better off making a chassis from wood and bolting it together. 

     

    That's not even touching your suspension design...

     

    It's kind of a case of  "you don't know what you don't know"

     

    Take a week read two books, get learned and then do a proper job of it! 

    • Like 2
  3. Hey Rob,

     

    Have you ever heard of cars running aggressive cams using an air flow meter rather than a MAP sensor? 

     

    On kelfords site they list a regrind service for B18c engines, it also says theses can be run with stock ECU how is this possible? Do you re-harden the cams surface after a re grind? What are the implications to the power curve?

     

    Thanks
    Grant

  4. Firstly Mini's are awesome and you should definately own one. Mine was awesome around town but would overheat if you tried to drive at 100km/h for long periods. Not sure if it was just that car or what. That car was a 1000cc id assume the 1275's would cruze at 100 comfortably. Maybe find out how they handle the aussie temperatures, there's bound to be an aussie mini forum.

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