HomeProductsMarine Engines3,5 ccKEEP.21M DD

KEEP.21M Direct Drive


   Displacementilindrata: 3,50 cc
   R.P.M. (max power): --
   Practical range: --
   Bore x stroke: 15,88x17,60 mm
   Sleeve: 9 ports
   Rear ball bearings: ceramic
   Front ball bearings: steel
   Crankshaft: 14,5 mm - turbo
   Carburetor: aluminium - 9 mm rotary
   Glowplugs: Turbo (C8TGH)
   Exhaust position: rear
   Starting: external
   Weight: 407 g
   MFuel type: 25% nitro
download-exploded-view
carburetor-setting
instruction-manual

 

FEATURES

07012   08575   85025-T   kit-dd-keep21m
Conrod:
The conrod is made from superlight & superstrong alluminium to make the lightest and strongest possible conrod to withstand the abuse of a racing engine.
  Sleeve:
The sleeve has 9 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.
  Crankshaft:
This is a special Crankshaft. Made to meet even the highest standards of our most demanding drivers. Slightly reduced rotational mass and greatly improved fuel flow provide great performance.
  Direct Drive

 

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