SEMROC Model #KV-61


The Estes SPEV was released in 1972 in Model Rocket News Volume 12 Number 3 as what would be a very limited run. It did not appear in a catalog and was discontinued in MRN volume 12 Number 4 in November, 1972 discounted to $1.59 from the original $1.99 price. It was designed by Bill Simon, purportedly, as a “Spare Parts Elimination Vehicle.” It did share parts with the Little Joe II, Mars Lander, and Thor-Agena B, so the possibility exists. The Lit-tle Joe II and Thor- Agena B were both discontinued in 1972 lending more credibility to the rumor. The Retro-Repro SPEV™ is a faithful reproduction of the original using all balsa couplers and nose cone. It uses laser-cut balsa fins for ease of construction. The original 18” parachute is replaced with a 12” two-color chute for limiting drift. A sturdier engine mount is provided along with a Kevlar® shock cord mount. No “spare parts” were eliminated in the production of the Semroc SPEV!

Additional Information

  • Length: 24.7″
  • Diameter: 2.217″
  • Weight: 2.2 oz.
  • Fins: Laser Cut Balsa
  • Nose Cone: Balsa
  • Decals: Water Slide
  • Recommended Motors:
    • B4-4, B6-4, C6-5


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Build History

  • 01/20/2009 – Purchased Semroc SPEV from Semroc for $22.00 (Retail $22.00).
  • 02/22/2014 – Donated kit to BluesRocks 10th Anniversary Raffel.