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F1 in schools

  • 14-03-2011 12:48am
    #1
    sgriffin
    Registered Users, Registered Users 2 Posts: 194 ✭✭


    Hi Guys,

    My name is shane and i am part of a project called F1 in schools, We are building a model F1 car powered my a Co2 canister.

    At the moment we are having trouble with our wheel assembly, we were running stock wheels given by f1 in schools on a carbon axle ran through steel bearings.

    this time were looking for very light wheels to sit on a carbon or aluminium axle ran through a ceramic/hybrid bearing.

    could you help with a 1/25th light weight wheel ? Could you suggest anything or point us in the right direction ?

    i have attached an exploded view of the cars wheel assembly and a final wheel aseembly picture.

    Thanks Guys

    Shane Griffin


Comments

  • #2
    coolwings
    Moderators, Recreation & Hobbies Moderators Posts: 3,455 Mod ✭✭✭✭coolwings


    The lightest wheel will be composite - that is, made of different materials, like real wheels are made.

    The disk to be made from something light like turned balsa eg 6mm balsa in a circle.
    The hub to be epoxied to the balsa but made from much harder material with a bearing drilling in centre for the axle, small in size for weight reduction, like eg a small steel collar
    The rolling surface "tyre" outside, something like smooth, glasspapered balsa with varnish, heatshrink, or vacformed plastic.


  • #3
    sgriffin
    Registered Users, Registered Users 2 Posts: 194 ✭✭sgriffin


    Thanks for your help Coolwings ill forward this onto our manufacturing engineer, Would anyone know a place that stock wheels this size ?


  • #4
    coolwings
    Moderators, Recreation & Hobbies Moderators Posts: 3,455 Mod ✭✭✭✭coolwings


    sgriffin wrote: »
    Thanks for your help Coolwings ill forward this onto our manufacturing engineer, Would anyone know a place that stock wheels this size ?

    What are the dimensions?


  • #5
    sgriffin
    Registered Users, Registered Users 2 Posts: 194 ✭✭sgriffin


    What I am looking for is wheels which are between 26mm diameter and 34mm diameter (width between 15mm and 19mm) they have to be slick with no threads or patterns.


  • #6
    coolwings
    Moderators, Recreation & Hobbies Moderators Posts: 3,455 Mod ✭✭✭✭coolwings


    Sounds like an impractical parts request. Maybe they are already made for some product, but it will be difficult to locate such an item, and the related spare part.
    If you luck out somebody will chip in with a model with such a part on it, and available separately as a spare part - which would be a very handy shortcut.

    But why not turn them on a lathe from wood? You could make several identical, with width/diameter variations between batches for testing and optimising.
    Wafer thin beech or similar should be light but still be strong enough.
    Dowel should be readily available to machine from.


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