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This is the RB Concept TM928 Off-Road Competition .28 Monster Truck Engine. The RB Products R&D department
has been working for many months on this project : the most powerful
Monster Truck and Truggy engine in the world! With its 4.67cc, this
incredible engine will power any Monster Truck or Truggy, whatever its
weight! This engine fits most of the .21 or .25 Monster Trucks and
Truggy but also the .21 off-road cars and will provide high torque and
terrific high speed. Rody developed a new exclusive 7-Port /M.E.S.
piston/liner in combination with a new light and ultra rigid aluminum
RB Concept crankcase. Specifications:
Displacement: 4.67cc
Bore: 18.35mm
Stroke: 17.60mm
Porting intake: 7
Porting exhaust: 3
Crankshaft: SPT/SG 14mm Bi-Turbo
Carburetor: Composite 9mm
Weight: 378g
Crankcase
- Light, rigid and strong to get the most optimal performances, the
CONCEPTion of this new crankcase has been based on these criteria.The
molding of the crankcase is realized with a vacuum system to avoid air
cavity's during the molding process.The internal porting of this new
TM928 crankcase have been improved and optimized to guide even better
the gasflow. Included you will find the o-ring system for the
carburettor to stop the o-ring from being damaged when disassembling
and assembling the carburettor from the crankcase.
Porting
- The special designed porting allows us to optimize the gas flow in
combination with the 7 intake ports of our sleeve. Additional main side
boost ports have been added to improve central gas flow. Despite the
impressive and massive horsepower available in our RB CONCEPT TM928 the
fuel consumption is more than acceptable!
Piston Liner -
The TM928 piston/Liner is of the type ABC chromed and rectified, an
improved vacuum casted piston is aligned with precision in the sleeve
to get the best fit, performances and a long life! The sleeve features
7 intake ports and 3 exhaust port (Multi Exhaust System). This sleeve
is perfectly adapted on the porting of the crankcase of the TM928 using
the latest technologies available.
Connecting Rod - The
Conrod of the TM928 is manufactured from unique high quality, ultra
sound checked aluminum, it has got 2 special bushings inserted and
expanded using the latest technology available. The aerodynamic
designed shape is developed to obtain less obstruction in the internal
gasflow and a special groove is made for better lubrification
performance and reliability.
Crankshaft - Result after a
long experience and generations high competition RB CONCEPT racing
engines, the RB Concept Bi-Turbo crankshaft of the RB Concept TM928 is
one of its secrets getting available a usable power range and balance.
Bearings
- The front-bearing of this TM928 features a rubber shield to prevent
dust or water to come into the engine and deteriorating the bearing
itself. The 14mm rear-bearing is of very high quality and has its line
of balls placed more close to the conrod to get a better stability of
the crankshaft.
Cooling-head - The cooling-head of the RB
CONCEPT TM928 is as we say HUGE : with its 10 ribs and diameter of
60mm, you can be assured of the best possible cooling.
Carburetor
- The TM928 carburetor is mainly made out of nylon to prevent
overheating of the fuel coming into the engine(vapor-lock) when the
engine is very hot. The base of the carburetor has a steel insert which
goes through till the top of the housing, so strength and stability is
assured. |
