Woodburn Dragstrip
7730 Hwy. 219
Woodburn, Oregon

Tuesday Tech Question (05/21)

The Tuesday Tech Question is a fun section where prospective technical inspectors, or anyone who wants to get a better idea of how to work the NHRA Rulebooks can test their knowledge and search abilities. If you have an NHRA Rulebook, try and find the answer the the question in the book before looking down at the answer. If you don’t have a Rulebook but are an NHRA Member, you can download a pdf at nhra.com under ‘Member Benefits’.



I have a full bodied car that runs in the 9.50 range in the ¼ mile. If I have a ribbon-type window net, does it need to meet SFI 27.1 and be replaced every 2 years?

Window Net Walt


Window Net Walt,

With the speed that you are running, a current SFI 27.1 tag is only required on a mesh-type window net. As stated on Section 20, page 30, of the 2013 NHRA Rulebook, under section 6:3, “For full-bodied cars running 7.50 (*4.50) to 9.99 (*6.39) or if a vehicle runs 135 mph or faster, a ribbon-type or SFI 27.1 mesh-type window net is mandatory unless otherwise specified by Class Requirements.”

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