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MSA Yearbook 2015

Discussion in 'Motorsports' started by old-git, 24 March 2015.

  1. old-git

    old-git Moderator

    Messages:
    9,124
    From:
    Essex
    Car:
    Elan & Robin Hood
    Anyone out there use this book? I am trying to understand the rules re roll cage tube sizes.

    Car is a 1967 Lotus Elan. Plan to use it in Street Class drag racing, sprints and hill climbs. It will be a hardtop. The regs seem to indicate that I can get away with just a hoop of 45mm diameter - 1.6.1 (c)

    My question is - I want to fit a full roll cage as we need to stiffen up the chassis, so does this have to also be 45mm diametrer or can I use 38mm as I am classing these tubes as optional?
     

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