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Image 1 — Pics...Estes EAC Viper 4" upscale, J420R
Image 2 — Pics...Estes EAC Viper 4" upscale, J420R
🔥 Hot ▲ 59 r/rocketry

Pics...Estes EAC Viper 4" upscale, J420R

Couldn't put pictures and video on the same post. Pics of the 4" upscale viper and the business end!

u/PoolStoreGotMe — 12 hours ago
▲ 23 r/rocketry

A little level 2 cert! Estes EAC Viper 4" upscale, J420R

Thought you folks might enjoy this. Designed it my self as a 4x upscale of the Estes Aerospace Club (EAC) Viper. If you had one in the 70s, you know. Flies awesome! Put in a 54mm mount so I can fly Js and Ks. I think the fins are too big for large Ks, likely get *flutter*.

u/PoolStoreGotMe — 1 day ago