The XT to Paris-Dakar ' 85 Yamaha attending the Paris-Dakar rally were of two types: those officers, prepared directly from the House and managed by the French team Sonauto, who conquered with Olivier second place, and those prepared by Belgarda, that after dominating the competition with Peak have finished third and fourth with the same peak and with Mad. We have analyzed the version prepared by the Italian team because, approaching closer to mass production, lets make some interesting comparisons.
The motion of Belgarda represents a real collage, because it uses parts of the TT600, the XT 600 Ténéré and 490 by cross. The frame is that of TT 600, braced at the rear to support the weight of the extra fuel tanks and tool bag. In particular it has been soldered a reinforced tube that goes from the attack of the swing arm from under the seat. Compared to the standard chassis then added two skid tubes, one on each side, for increased protection, and the Centre stand for easy servicing.
The fork and the rear swingarm were provided directly from Yamaha and they equal those of motorcycle officers. The fork has the stems from 43 mm such as the TT 600, but has the sliders with the quick release front wheel. Clear springs are reinforced for extra weight that must endure. The swingarm is an experimental model a bit higher than that of series. The rear shock is to set, While the spring again this is reinforced to withstand greater load.
The wheels shall be those of the 490 by cross. The tires were mounted, Depending on the land, with the air Chamber, putting behind a double Te rim to avoid tearing the valve, or the «mousse» solid rubber. The «mousse» in particular has been used on the rocks or on hard surfaces where the risk of puncturing is very high.
The braking system is a cross between what the XT 600 Ténéré and the 490 by cross. On the front there is the hard braking with the Group of Ténéré (pump and caliper) the cross bike which ensures greater reliability. At the rear is the drum brake group are from cross.
The engine is the TT 600, structurally identical to that, the Ténéré but already in the beginning a bit more powerful (about 2 more horses) and above all more generous in low. To earn another shot at low was replaced the camshaft with that preparation kits that Belgarda markets, and has been given special attention in the design of the Terminal part of the free outlet exhaust, which also takes advantage of the OEM manifold. It has also been changed to accommodate the Carburetors calibrated airbox on the tank.
In the race then you used the barrel of the Ténéré with cane in. cast iron instead of TT with the chrome barrel. Are also standard clutch and gearbox, the latter is how all that as scaling relationships. He spoke instead on the final report, adapting gradually to the characteristics of the route with the Crown replacement. The chain is strengthened, of the type used on dirt bikes.
The tank has a capacity of 39 litres and is the same as the preparedness kit, Inside is completely blank; the pilots themselves have renounced sponge inside because the half-empty tank of fuel to annoy not shaking the Guide and earns a liter capacity. The side tanks were made specially by Belgarda. The water, required for regulation, has, a capacity of 6 liters, that of petrol by 10.
The superstructure is completed from the saddle of the Ténéré, from a rear fender Acerbis and windshield, enclosing the radiator of the ollo (the Ténéré is set next to the engine). The fairing protects the instrumentation that includes tachometer, speedometer with trip-master and oil temperature thermometer. Behind the fairing are also the compass and a cassette for the roadbook