Fin stock thickness is the standard 3/32” stuff.

And the engine hook is the standard ‘original’ kind of hook at .0955” wide by 2.85” long. I say ‘standard’ engine hook, as later on Estes started using some engine hooks (maybe like late 70s or very early 80s) that were standard length, but the material was wider and maybe just a tad bit thicker (stiffer). Centuri used them too in some kits at about the same time, but by then those kits were probably being packaged in Penrose anyway. But the one included in this kit was like the good ol’ standard run of the mill engine hook. Still nice and shiny though.

Earl

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Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970