6. Internal Main hoop with external Front Hoop

6.1. The diagram below shows the general requirements for the fore/aft, left/right, and up/down dimensions between the occupants and the roll-cage.

6.2. (DRAWING. MSA drawing Q31)

6.2.          If you need to have the front hoop on the outside of a hard-top or soft-top with the main hoop inside, the following design may help. The square plates that sandwich the roof panel are of standard design defined elsewhere. The plates may be level or angled to suit the shape of the roof. There must be no more than 4" / 100mm between the top of the roll-cage top tube and the inside of the roof. The difference may be made up with round tube as used for the roll-cage, or by box section at least 2" / 50mm square by 1/8" / 3mm wall. On soft-top installations, the main hoop may replace the first tilt-frame with only the bolt holes perforating the material.

6.3.          The joint shown in DRAWING 8.2.14.  could be used to make an adjustable upstand, if inverted from the way it is drawn.

6.4. (Drawing)

6.5. (Drawing)

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Last Updated:
19/02/2007