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Estes Model Rocket Engine, Model A8-3, Pack of 24



Each pack contains igniters, igniter plugs, and recovery wadding. Letter indicates engine's maximum total impulse (equal to the engine's thrust in Newtons times the length of engine burn in seconds): A=2.5 N-sec, B=5 N-sec, C=10 N-sec. First number indicates engine's average thrust in Newtons. Second number is the delay time in seconds between end of thrust and start of ejection charge. For example, an A6-4 engine has the same thrust and delay time as a B6-4 engine but burns only half as long.

Note: Rocket engines contain flammable solid material; each shipment has an additional hazardous shipping charge.

Note: Residents of CA, ND, NJ, and RI may be subject to additional state age or permit requirements when purchasing this item.


Shipping Information or Purchase Restrictions
  • Flammable Solid - This product is/contains a DOT regulated hazardous material. Your order will incur a hazardous materials fee. Orders shipping to HI and AK are subject to review and may incur additional shipping charges.
Return Policy:

If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.


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