Gilera Silhouette R600 - Moby Dick Replica

A Dakar inspired look a like 

 

Gilera and Dakar : Being a Brianzolo (the area of Northern Italy between the 2 cities Milano and Como) means being especially very proud of one Italian brand name and its accomplishments through History: Gilera! 

Unfortunately for the North American continent which never benefited for the last 40 years form the imports of such marvelous motorcycles Gilera is a somewhat obscure brand. For example, very few know that Gilera invented the supermotard style with their Nordwest model and opened up to a new motorcycle segment market. Without going back to its successful history and relating more to the recent Dakar races, in the late 90s Gilera of Arcore participated with success with their motorcycles. Such bikes were built on the bi-4 600 engine platform and won the Dakar and the pharaohs rally. The latest bikes used the famous/infamous 750 engine which was also utilized in the extremely rare Bimota Gb1. Often the Gilera aficionados refer to the latest style Dakar bike as "Aero" because of its development in the wind tunnel, some others like me call her Moby Dick because of that beautiful linear fish like shape and definitely magnificent "presence".

Owning the real McCoy -an ex Mandelli which raced at the Dakar 2000- was not enough to me as I could not really put my hands on the bike and build it myself. From here, my hitch of building a replica using bits and pieces from the early and late Dakar bikes began.... 

 

1990 "Moby Dick" Replica 

 

 

 

Picture 1,2: I needed a donor bike. Nothing better than a 1990 RC600 (COBRA) even though it would have been better to start with the RC600R because of its better suspension and more preppy engine. My goal was to create a bike which could resemble at high level the racing Moby Dick (pic 2)

 

 

 

 

 

Picture 3: My luck, can you call it 'luck?" it all began when I was to able to find some bits and pieces for one of those bikes. This would work perfectly for my replica (at least I thought first). The parts included the back tank, the 2 front tanks, the full fairing, the seat base, the filter box, the front fender and other miscellaneous bits and pieces

 

 

 

 

 

Picture 4, 5:  The project was initiated but not completed in Italy by a motorcycle customs maker. Unfortunately for me, I couldn't wait any longer for the slow progress and finally took the project over. The custom ss collector and exhaust were built, the pegs relocation mounts, the main frame mods executed, the tool boxes built , and the water canister constructed, last the back tank mounting frames done.  

 

 

 

 

Picture 6:  Other parts I got form the Mandelii bike were the 2 magnesium  hubs for the racing Gilera bikes. My good friend and riding buddy Jim at M.A.P Engineering  machined the Nissin caliper mount for the front wheel. A Ducati Monster  300 MM front rotor was used on the 45 mm marzocchi forks. The extremely complicated back wheel and its adapter are is still a work in in progress.  

 

 

 

Picture 7The stainless steel exhaust with spring retainers was installed 

 

 

 

Picture 8The air filter box is installed with fast rubber mounts handles on the top. This will allow the quick inspection and clean of the air filter during my desert rides. The air filter is from the automotive market -Lancia delta Evo-...what a coincidence!

 

 

Picture 9, 10, 11, 12: This is how the bike looks like at its current stage. I first  fabricated the rubber duct that connects the air filter to the carbs. It is not the perfect solution but it is definitely a start. Later through the help of a great Gilerista I got the real Dakar duct. I have included a pic of the 2 side to side. 

 

 

 

 

 

 

 

Picture 13,14, 15: Pictures of the back tank and of its custom frame mounts. Such mounts have been drilled to save some weight. You may notice the space for the small battery and the hole for the gas lid 

 

 

 

 

 

Picture 16: The back tank is installed. This gives me a better idea where to place the electric wiring since the bike has changed a lot from its original configuration. 

 

 

 

        

Picture 17: Seat base adaptation. It flushes well with the filter housing. I have been waiting for a battery to then make the final decision and trim the seat before the upholstery work.  

 

 

 

Pic 18 : Regarding the instrument panel, I opted for simplicity. The pic says it all. Notice the gorgeous forged triple trees and the fully adjustable marzocchi forks

        

 

Pic 19 :The back wheel of the 750 Dakar bike was first installed on the bike. Unfortunately I have realized that the sprocket carrier I had was the one for the 600 Dakar bike. The two hubs are different as the diameter of the housing for the sprocket carrier is different. See pictures.  After 4 months I was to able to secure a 600 Dakar hub. I am currently having the new wheel laced to complete the back tire installation. Again here the great help of other gileristas that came to my rescue made this possible

 

 

 

Pic 20: It is coming together. Very slowly but it is moving forward 

 

  

 

 

 

 

 

 

Make Model

Gilera RC 600

Year

1990

Engine

Liquid cooled, four stroke, single cylinder, DOHC, 4 valves

Capacity

558 cc
Bore x Stroke 98 x 74 mm
Compression Ratio 10.5:1

Induction

2x 30mm carbs

Ignition  /  Starting

Electronic  /  electric

Max Power

53 hp @ 7800 rpm (rear tyre  45.5 hp @ 6750 rpm )

Max Torque

5.0 kg-m @ 5750 rpm

Transmission  /  Drive

5 Speed  /  chain

Front Suspension

40mm Telescopic forks, 160mm wheel travel.

Rear Suspension

Monoshock, 260mm wheel travel.

Front Brakes

Single 260mm disc 2 piston caliper

Rear Brakes

Single 220mm disc 1 piston caliper

Front Tyre

90/90 -21

Rear Tyre

130/80 -17

Dry-Weight / Wet-Weight

141 kg / 152 kg

Fuel Capacity

12 Litres

Consumption  average

15.0 km/lit

Braking 60 - 0 / 100 - 0

16.2 m / 46.3 m

Standing ¼ Mile  

13.3 sec / 153.9 km/h

Top Speed

155.6 km/h

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