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RB Concept
S7 II
POWER OF EXPERIENCE |
Because
the RB Concept S7 is the most popular Buggy engine of the World, it is still
the favorite engine of the more demanding drivers ! Since 1997, the RB
Concept S7 has the most incredible carrier starting with its World Champion
title in 1998 !
Now, this smooth and reliable engine has
been release with its new gold head ! The reinforced conrod and the new
durable material of its crankshaft are the main new features of this classic
engine |
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Technical
Specifications |
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Type: |
Rear Exhaust |
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Displacement: |
3.5cc |
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Bore: |
16.42mm |
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Stroke: |
16.42mm
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Porting intake: |
7 |
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Porting exhaust: |
1 |
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Crankshaft: |
13mm Turbo Buggy |
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Carburetor: |
Nylon 8mm Venturi |
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Glowplug: |
1055-6 "Normal" |
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Weight: |
356Gr. |
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Pullstarter: |
No |
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| Crankcase:
This RB Concept S7 crankcase has been
designed and developed internally and externally by Rody Roem. The weight
has been kept to a minimum and its cooling capacity's to a maximum, it is
more rigid and extra cooling ribs are present on the bottom of the crankcase
to get more efficient cooling. |
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Porting:
Its unique internal 3-Ports design
helps the engine to get the best torque available at low rpm and usable
power with good fuel-consumption. The moulding of the crankcase is realized
with a vacuum system to avoid air cavity's during the moulding process.
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Piston/Liner:
The piston/Liner is of the type ABC
chromed and rectified, the piston fits with precision in the sleeve to get
the best performances and a longer life! The sleeve features 7 intake ports,
this sleeve is specially adapted on the porting of the S7 using the last
technologies available.
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Conrod: The
Conrod is manufactured from high quality, ultra sound checked aluminum, it
has got 2 special bushings inserted and expanded with 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.
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Crankshaft:
The timing and gas flow have been
specially designed for the off road specifications. The special drawing of
the crankshaft has been studied to offer the best weight balance possible.
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Bearings: The
front-bearing of this RB Concept S7 has got a rubber shield to prevent dust
or water to come into the engine and deteriorating the bearing itself.
The 13mm 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.
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Cooling-head:
The cooling head has been also
re-designed after many tests. Big, this head improves the cooling and keeps
continuous performances during the whole race.
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Carburetor:
This new improved "NYLON" carburetor is
mainly made out of Nylon to prevent overheating of the fuel coming into the
engine(vaporlock) when it is very hot. The base of the carburetor has a new
steel insert which goes through till the top of the housing, so strength and
stability is assured.
This carburetor can receive the
following venturis of 6,7 or 8mm depending the power you need and
fuelconsumption you want to obtain if this is needed. 2 venturis (6 and 7 mm
are delivered with the carburetor.
Great carbs, can't beat
them.
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| Glowplug: The
"NORMAL" glowplug RB Concept, specially adapted for off-road use, uses the
same wire as the "Turbo" glowplugs used in high competition and recognized
to be strong and reliable. |
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