De Rooy Loses Lead, Gyrtech Engines Pull Forward
Antofagasta/El Salvador - Although Martin Kolomý withdrew from this year ´s Dakar Rally prematurely, other crews using the Gyrtech engine in their trucks still continue. The aggregate produced by the technology centre of the Roudnice Buggyra race truck team in addition currently belongs to the top offer of Dakar.
The accurate identification that the racing engine, driving in addition to the Kolomý´s truck four more Dakar racing vehicles, bears is Gyrtech Rally Power MK14-3EC. The crews still continuing in the race and having this engine under the bonnets of their trucks include the crews of Tomáš Vrátný and Arthur Ardavichus. "Last year the engine was used for the first time by three Dakar crews and proved to be absolutely perfect. This year this engine has been already used by five racing vehicles. Although there have been no issues with the engine, we continue working on it and tuning it to perfection. For example elevation above sea level cannot be simulated and so we continue to collect data. I personally estimated that perfect tuning of the engine would take three years. Now we are in the middle of the second," commented the technical director of Buggyra Robin Dolejš.
Gyrtech is a six-cylinder thirteen-litre engine, which is a substantial difference from the Kamaz engines. The Russian machines are driven by eight-cylinder engines, either sixteen-litre Liebherr or nineteen-litre Jamz. "Two years ago they said the target category would be maximum six-cylinder engines with thirteen-litre cubic capacity but this has somehow not been applied, which I do not understand. But tomorrow everything may change and certainly the Gyrtech engine used by the Tatra trucks has been one step ahead. For example with regard to weight it has helped a lot," said Radomír Smolka, the technical development manager of the Tatra Trucks automobile plant.
This engine made by Buggyra has several advantages, being lighter, more powerful, electronically controlled, more economical and accurately adjustable to the race engagement. "In 2011 I had an accident at Dakar resulting in a broken vertebra. If Tatra had had this new engine at that time, the weight balance would have been better and the ride would have been safer. And perhaps the accident would not have happened at all," remembered the pilot Martin Kolomý in the context of the engine characteristics comparison.
Thus the crews praise the new aggregate and its properties. A similar type has also been used this year for example by Aleš Loprais. But what happens with the heart of the vehicle in an accident? For example what happens if the truck overturns like for example this year the truck of Jaroslav Valtr of KM Racing? "Laying the truck on a side is virtually no problem for the engine. The only thing that may happen is that some oil runs out of it and that is why it needs to be switched off in order not to run dry without lubrication. Another thing is that if the engine runs under maximum load and suddenly switches off oil may bake on the hot parts. But the engine as such survives this," this is how Robin Dolejš described possible critical moments.
A critical moment occurred in the course of stage 11 of the rally to the Dutch pilot De Rooy, so far the leader of the overall interim classification. In the third longest stage of this year ´s Dakar race from Antofagasta to El Salvador he finally ranked third after the six hundred measured kilometres and thus fell form the gold to the silver overall rank. The Russian pilot Karginov ascended to the lead after his fourth victory in a stage. "De Rooy was under extreme pressure, which he eventually could not stand. Kamaz trucks push a lot, they ride quickly, heedlessly and with orders from the team managements to take maximum risk. I am not surprised he could not resist this. Last year Kamaz trucks exerted the same pressure on us. They began to catch up with us, whirl the dust in front of us and one of them slowed us down. Their big advantage is their strong background, they are for instance able to build a brand new truck overnight," explained the Dakar situation Martin Kolomý.
As for the Czech crews, Loprais ranked fourth and Arthur Ardavichus with Gyrtech engine fourteenth. Loprais holds the overall interim potato rank as well and all pilots driving with Gyrtech support are lined up in the second ten.
The centralized Kamaz team so far seems to be heading towards overall victory in the rally again this year. The next item on the Dakar agenda is the last but one stage from El Salvador to La Serena consisting of exact seven hundred kilometres, of which three hundred and fifty are measured.
Results - Stage 11 (605 km): 1. Karginov (RUS) Kamaz 6:22:32, 2. Nikolaev (RUS) Kamaz +14:18, 3. De Rooy (NED) Iveco +15:51, 4. Loprais (CZE) Tatra +22:36, 5. Shibalova (RUS) Kamaz +28:35, 14. Ardavichus (KAZ) Tatra +1:44:31, 17. Vildman (CZE) Liaz +2:10:29, 19. Tománek (CZE) Tatra +2:18:20, 21. Vrátný (CZE) Tatra +2:48:27.
Overall: 1. Karginov (RUS) Kamaz 48:25:17, 2. De Rooy (NED) Iveco +7:56, 3. Nikolaev (RUS) Kamaz +1:35:51, 4. Loprais (CZE) Tatra +2:17:56, 5. Sotnikov (RUS) Kamaz +3:10:19, 13. Vildman (CZE) Liaz +11:52:10, 14. Tománek (CZE) Tatra +13:40:59, 16. Ardavichus (KAZ) Tatra +14:47:40, 17. Vrátný (CZE) Tatra +15:35:48.