Prelimiary Cage Design Question, Climb to Clouds book

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Mrk1
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Prelimiary Cage Design Question, Climb to Clouds book

Post by Mrk1 »

I am putting together a early design idea for my cage and I took a look at what Climb to the Clouds requires for a guide. The 2014 requirements specify 2 door bars, does an X count as 2? Other rule books have it in writing that an X counts as 2. Also looking at the diagram, gussets B, C, J & K. The writing says 1.0" x 0.090 or 0.125 flat stock. Is that a minimum? I usually make gussets like this out of 1.5" or 1.75" 0.095. Would those be accepted as they are larger then written?


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3rdgendennis
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Re: Prelimiary Cage Design Question, Climb to Clouds book

Post by 3rdgendennis »

Generally, the rules we use are minimum requirements. Anything more than required is also acceptable (in the case of gussets, tube diameter, etc.)
FIA article 253 (http://www.fia.com/article-253-2015-saf ... d-13072015) is what NASA and Rally America rules are based off of. Cages meeting those requirements are legal for NEHA, as well as NASCAR style cages.
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walterclark
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Re: Prelimiary Cage Design Question, Climb to Clouds book

Post by walterclark »

An X does count as 2 bars. However the CTTC rules require the sill bars on both sides, unless it can be shown that there is equivalent structure added to the existing sills. So, with an X one would still need to add the sill even though that adds up to 3 bars.

Yes, the gusset requirement is a minimum. Gusseting based on .095 1.5 or 1.75 tubing is fine...It exceeds the 1.0 x .090 minimum tube option.
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