The convoy is now slowly driving at a speed of fifteen kilometers per hour on the way from Yancun Industrial Zone to Beihai City. www.biquge.info they used to drive quite at a good speed on the roads of Orient Harbor, and they could maintain a speed of twenty-five to twenty-eight kilometers per hour. This speed seemed like an electric car to the elders of the old time, but in the eyes of the natives, it was an absolute high speed. You must know that although the speed of horse-drawn carriages can generally range from 15 to 20 kilometers per hour, the speed of 25 kilometers per hour in Rolls-Royce has already shocked the natives. Not to mention the heavy loads on it, the back of the truck was still piled high with goods, and the outside of the cargo was covered with a thick layer of waterproof canvas.

The speed of the horse-drawn cart after carrying the goods is only about ten kilometers per hour, and the ox-cart is even slower, no more than eight kilometers per hour. This is still on a nearly perfect straight road like the Oriental Port, and once you leave the road and enter the potholed road of the official road, the speed will immediately drop to about five kilometers. The most disturbing thing for the natives is that this Rolls-Royce is carrying a lot more goods than the cart is dragging goods, and the people carrying it do not seem to have much trouble on it, except that black smoke will come out from time to time and the people sitting on it will sweat profusely, which looks quite painful.

Each of these cargo Rolls-Royces carried 550 kilograms of cargo, and together with the people on each vehicle, the weight of each vehicle was close to 800 kilograms, which was enough to top the load of a pickup truck in the old time and space. The reason why it can carry so many people can also run at such a speed is purely by the Stirling engine on the car, as more and more Rolls-Royce cargo types are widely used in the freight work of the Oriental Port, the power of people is no longer enough to drive such a heavy body and the materials carried, and the forced use of manpower to drive the vehicle is not only a serious loss of human strength, but also a serious reduction in the carrying distance of the vehicle.

Although the Heavy Industry Laboratory has made a breakthrough in the production of star engines, although it is not possible to produce small engines in batches, it is still no problem to ensure the installation of small batches of vehicles. Although the small engine has high power and long endurance, there is a rather embarrassing problem - the engine needs to be refueled, and it is impossible to have a gas station on the mainland of the Wuchao Dynasty at present, if you want to use a fuel engine to drive these vehicles, I am afraid you will have to bring a fuel transportation fleet to ensure the supply of fuel along the way. In this way, there is not enough carrying capacity to transport the materials that need to ensure the normal movement of the convoy and the gifts to Zhu Youxiao, but the cart is turned upside down.

Stirling engine is at this time into Zhang Yuan's eyes, to talk about motor vehicles, the Oriental Port is not unmanufactured, now the Oriental Port periphery of the running train has several locomotives, although the failure is frequent, but it is good to ensure the logistics and personnel transportation of the entire Oriental Port, some time ago it is also a trial production of a steam car with a boiler and steam engine.

Although the steam car carries more materials, the defects of the steam equipment are also there. First of all, the steam car needs to be equipped with a boiler and boiling water to ensure steam, and the boiler, water, coal, etc. all have to account for a lot of weight, which seriously affects the efficiency of the materials carried by the car; Second, the operator requirements of the steam car are relatively high, not only a driver is enough, but there must be a special management of the boiler stoker to ensure the safety of the boiler, two people can work together to drive the car, manpower occupies too much; Finally, in view of the existing industrial production capacity of the Senate, the self-produced boiler can be described as full of dangers, and if you are not careful, you may have a boiler explosion and other dangerous situations - the boiler explosion can be called the power of an aerial bomb, and the Executive Committee is very worried about this "walking cabinet", knowing that these vehicles often have to wander near the location of the senators, and once the boiler explodes, the result must be tragic. With the attack on the Foreign Legion west of Champa Port, a steam car exploded at a critical moment, completely crushing the charge of hundreds of people, and then the Executive Committee completely banned the equipment and development of steam cars.

Since steam cars could not be developed, Zhang Yuan's eyes fell on several strange cars that had been abandoned from the beginning. Originally manufactured by the weapons development department, the vehicles were equipped with a flying thunder cannon that could be flexibly placed on the ground for rapid deployment by levers, and they were equipped with eight sets of Stirling engines. The principle of the Stirling engine is simple, but there is still a certain degree of difficulty in manufacturing, so even if these "self-propelled guns" are equipped with eight sets of Stirling engines, the power output is not comparable to a "Polaris" Stirling engine now equipped with a longitudinal arrangement on a cargo Rolls-Royce. The name was decided by several veterans of the heavy industry laboratory when discussing the design scheme, the two heating cylinders are arranged face to face, the connecting rod is longitudinally facing each other to do work on the crankshaft, and the cooling cylinder and the heating cylinder are arranged longitudinally at 90 degrees, because the heating cylinder is longer and the cooling cylinder is shorter, so the deployment method looks like the North Star on the Polaris flag from the side, hence the name.

In this arrangement, no matter where the crankshaft turns, at least one cylinder can be used to ensure that power is not wasted. Because the current Stirling engine manufacturer is not the former military department, but a heavy industry laboratory with "precision machine tools", so these precision-machined cylinders are almost crushing the cylinders temporarily cast by those military departments in terms of accuracy, so the output of the "Polaris" engine is more than double the output of the previous eight sets of Stirling engines.

The advantage of the Stirling engine is that it does not require fuel, as long as something is heating the heating cylinders, it is enough to keep the whole engine running. Vehicles equipped with Stirling engines only need to collect firewood along the way, put it into the combustion chamber to burn, and then drive the vehicle to drive normally. The only trouble is the wear between the cylinder and the piston.

The Stirling engine does not have to be a fuel engine, and there is no oil hole in it to add oil for lubrication, so the lubrication of the cylinder is a very troublesome thing, so there are only two solutions. The first uses wear-resistant materials to make cylinders, and these cylinders are made of bronze, which is far superior to steel in terms of wear resistance and thermal expansion. Of course, if you can make aluminum alloy in the future, you can consider changing to aluminum alloy, but it is not possible now; Another option is to let it go, when the cylinder is grinded and expanded, then replace it with a new piston of a larger size, these engines have been tested, and it will take about 1,000 hours of operation to cause wear and tear, resulting in air leakage and other conditions. According to this possibility, the convoy has three sizes of spare pistons, wrapped in oiled paper and carried north with a piece, and if there is a need to replace it, it will be replaced step by step.

But Liu Yeqiang questioned whether this kind of engine could survive to Beijing and then return, but there was no better way at the moment. The range of the aircraft is not enough, at most, it will fly to the edge of the sortie radius at the distance of about Mingzhou; In the case of ships, the Merdeno Navy is cruising nearby, and although the two sides have not officially declared war, they can think with their toes that the Medeno people must have bad intentions, so it is impossible to take the sea route, and now the only option is to carry out road transportation. Although the Stirling engine has all kinds of problems, it is the only engine that can be used at the moment. In addition, the team's Rolls-Royce has not canceled the output of manpower, pedaling with foot pedals can still provide power, and the vehicle can turn off the engine when traveling on a flat road, and use human power to drive or even animal power for traction, which can increase a lot of engine mileage. Although it doesn't look good, it's certain that it's okay to go to Kyoshi.

As for arriving in Jingshi, it should be at least two months later, and it should take about half a year after dealing with these things, and then the search for communication stations and other things should be almost done. The problem of the dry dock can be solved within half a year, although the transformation of the steam engine of the Fengrui ship cannot be said to be completed, but the transformation of one is still enough, so that the Fengrui ship can be considered to go to Tianjin Port to meet the returning convoy and personnel. Once the steam engine drive transformation is completed, then these ships will become unrivaled "fast ships" in this world, even if the Medenor fleet is cruising everywhere outside, there is not enough ability to intercept them.

Liu Yeqiang sat on the wooden seat, leaning back against the backrest of **, feeling a little uncomfortable. Because these vehicles are rushed out, they can be regarded as standard and simple on the seats, and there is nothing bare on them, not only because they are uncomfortable, but they will sweat on their buttocks after sitting for a long time, and they feel very awkward when they stick to their pants. He is now riding in a Rolls-Royce, before he was curious to get into the off-road Rolls-Royce, the car is light, less loaded, but because there is no engine installed and can only rely on human power, he sat and stepped on the pedal for a while It doesn't feel fun, in the previous parking inspection stage directly transferred to the truck, the truck does not need to work by himself, he looked down at his feet with interest, the pedal is shaking slightly as the vehicle runs over the uneven road.

He sighed, since the crossing, all of them had the feeling that they were having an unrealistic dream. As the Oriental Port was slowly established, the sense of accomplishment in the hearts of the patriarchs had turned into a colorful aura around them, and everyone couldn't help but have a sense of urgency in their hearts that a needle would come from nowhere to puncture this soap bubble. Liu Yeqiang closed his eyes, leaned on the backrest of the man and raised his head to take a nap, since the crossing, most of the elders have not had sleep deprivation. At this time, the port of the East was like Japan after the Meiji Restoration, and the patriarchs hated to eat and took three bites to seize the time to build the country.

Now this is the first step of a journey of thousands of miles, someone in front of him is in charge of driving, and he doesn't have to worry about it at all, and after a long time, Liu Yeqiang wants to take this opportunity to take a break. The engine made a sound of metal friction under the saddle, and the heat also radiated outward from under the saddle, Liu Yeqiang felt that his body had begun to get hotter and hotter, and he couldn't help but open his eyes and watch for a while. The van has added door frames made of hardwood panels, covered with two layers of canvas, and the doors are inlaid with glass to keep out the wind and rain.

When the canvas absorbs water, it begins to expand, and once it does, it is able to block more water from passing through, which is why the canvas can be used to hold back water and even make buckets. The canvas bucket is simple to make, only need to install a steel ring on the top and bottom of the canvas bag in the bucket, it can be made into a bucket, because the cost is cheap, the team is equipped with a large number of canvas buckets, which can be used to fill water or other things on the way.

But the trouble Liu Yeqiang is encountering at the moment is not that he is being rained, but that the amount of heat is being dissipated under his buttocks. The combustion chamber of the engine should not be designed too far back, as the increased heat can easily ignite the cargo in the cabin, so the position of the engine begins to move forward. But the engine can not be moved to the front of the car body like the old world car, the first is that if the engine is placed in front of the car body, it is bound to need a long drive shaft to transmit the power from the front of the car body to the drive wheel, the material requirements for the drive shaft are relatively high, although the drive shaft can be built to meet the requirements at this stage, but the output has not been able to go up; The second problem is that due to the design of the Rolls-Royce itself, the position of the four foot pedals of the body, the gearbox, etc., can only be located under the cab, so the position of the engine can only be around this. The designers moved the gearbox and other positions to the left side of the body, and mounted the engine to the right under the cab. Although this installation solved the problem that the transmission and the body of the car could resonate due to the vibration of the engine, it created a new problem, and the location of the combustion chamber had to be installed under the cab, and the people in the cab were like sitting on the stove, which was naturally unbearable in the summer, let alone when the doors were closed.

"No, no, no!" Yang Muqin's voice came from the walkie-talkie, "All stop, all stop!" ”

The convoy came to a halt in a clearing by the woods, and in the distance a caravan drove up, and the cows and horses neighed and were so noisy. Yang Muqin jumped out of the car with a carbine hanging on his right shoulder, slapped his ass again and again, and shouted, "It's too hot!" It's like grilled steak! ”

Liu Yeqiang also got out of the car and stretched on the grass, and his back hurt a little after sitting for a long time. He tilted his head sideways and watched with interest as the caravan was moving along the official road with very uneven ground, and the drivers around him were turning off the combustion chamber, Yang Mu Qin's hand pointed to the body of the car while fanning his buttocks and said, "Remove the doors of this car, don't need the doors!" It's better to put the windshield flat as well, it's too hot! It's summer, and it's still burning fire, it's really depressing! ”

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