HomeProductsMarine Engines3,5 ccBONITO.21M

BONITO.21M


   Displacement: 3,50 cc
   R.P.M. (max power): 35.000 RPM
   Practical range: 6.000-40.700 R.P.M.
   Bore x stroke: 15,88x17,60 mm
   Sleeve: 7 ports
   Rear ball bearings: steel
   Front ball bearings: steel
   Crankshaft: 14,5 mm - turbo
   Carburetor: aluminium - 9 mm - rotary 
   Glowplug: Standard (C6G)
   Exhaust position: rear
   Starting: -
   Weight: 321 g
   Fuel type: 25% nitro
download-exploded-view
carburetor-setting
instruction-manual

Also available with rear and front ceramic ball bearings.


FEATURES

biella-R7   acc-bonitoM   15068   03902
Conrod:
The R7 conrod is made from a superlight alluminium which has been checked ultrasonic. The specific form of the R7 creates little turbulence inside the engine while running.
  Sleeve:
The sleeve has 7 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:
The crankshaft has a special shape to reduce turbulences inside the crankcase. The front part was extended to improve the seal against fuel leaking.
  Compression rings:
The ignition timing is controlled with these little rings of various thickness. To change the ignition timing you can add or remove a ring of a certain thickness.

 

50050 40043
350003435036000  
 
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