24" KK Achilles

(2 reviews)

✓ In Stock

Current Stock:
FREE UK Mainland Delivery on orders over £30 | 90 Day No Quibble Returns
Click For Worldwide Shipping Info | Order by Phone: 01629 258240


The KK Achilles was a scaled down version of the KK Ajax, rubber powered model and one of KK's earliest kits, the original version designed by Louis B Heath in 1939 and latterly updated by Albert Hatfull in 1950. Traditionally simple built-up construction, featuring precision laser cut parts to aid speedy construction the Achilles makes for an excellent, first old-timer flying model with a terrific flying performance and duration.


  • Wingspan: 24" (61cm)
  • Power system: Rubber band free-flight
  • Manufacturer: KK
  • Designed by: Louis B. Heath
  • Difficulty: Intermediate


This kit is highly recommended. The Achilles is another of the rubber free flight models that can be easily modified by experienced builders to take lightweight electric motor and 3 channel R/C equipment for indoor and relaxed summer evening flying.  This kit is a laser-cut replica of the original KK Achilles. Construction of the model from this kit uses the traditional method of "stick and tissue", that consists of a built up balsa wood skeleton (framework), covered with a tissue skin. (Some modellers may prefer to use a mylar under-covering for strength and lightness). The balsa frameworks are built over a plan that is printed at the exact scale of the model, which is in essence a real engineering drawing. Power is provided by traditional FAI flight rubber . Free flight means just that - once the model is launched, it is on its own. It must follow a predetermined flight path established when the model is initially adjusted for flight or "trimmed". This type of traditional building technique and flying requires a degree of patience and skill, but is extremely rewarding.


  • Balsa wood sheets with precise laser cut parts
  • Strip wood
  • Pair of 25mm plastic wheels
  • 7" Plastic propeller
  • Nylon nose bushing
  • Wire for propshaft
  • FAI rubber
  • Acetate sheet for cabin
  • Piano wire for the main undercarriage
  • Tissue to cover the model
  • Full size printed plan
  • Balsa block for nose cone


  • Laminated balsa propeller
  • Coloured tissue
  • Glue


Model shown expertly built and photographed by Nick Seymour, featuring a laminated balsa cut propeller.

24" (61cm)


  • 4
    Nice Kit

    Posted by Andy Blackburn on 18th May 2022

    Nice little kit, builds quite quickly into a nice model.Wood selection could be better - longerons ranged from OK to very hard, but some of the printed sheet was so soft (about 4 1/2 lb / cu ft) that the ribs required reinforcement between the top and bottom spars. Some of the parts don't fit that well, but then the left and right wing and stabiliser halves don't _quite_ match which isn't surprising, considering the age of the design. The other issue which might cause some problems is that the c.g. is not marked on the plan; it's probably in the original Keil Kraft instructions, which aren't supplied. I put the c.g. on mine just behind 50% chord, at the vertical fuselage member at the rear of the cabin windows, and that works OK. It thermals really well, so a dethermalizer might be wise. Other than that, it would have been nice to have some coloured tissue in the kit rather than the supplied white.

  • 4
    A good complete kit

    Posted by John Godwin on 10th Oct 2019

    General A good complete kit, you need very little extra to build a flying model. There are no building instructions, which is fine if you know what to do. A novice would find it difficult though. It might be useful to have some sort of generic guide for this type of kit. Strip wood The 3/32 square strip wood was generally too soft. The whole frame depends of this size of wood so it should be reasonably hard. There are laser cut trailing edges as well as strip wood for the same purpose. [originally posted on our old website 18/05/2018]