{"id":5091,"date":"2024-03-27T15:28:32","date_gmt":"2024-03-27T12:28:32","guid":{"rendered":"https:\/\/en.smazka.ru\/?post_type=news&p=5091"},"modified":"2024-03-27T15:28:33","modified_gmt":"2024-03-27T12:28:33","slug":"8-hours-at-maximum-rpm","status":"publish","type":"news","link":"https:\/\/en.smazka.ru\/news\/company-news\/8-hours-at-maximum-rpm","title":{"rendered":"8 hours at maximum rpm"},"content":{"rendered":"\n

Friends. A year ago we started producing oil for two-stroke engines. During this time it has already managed to gain popularity both among professionals who use various gasoline tools in their hard work, and among dacha owners. There are also many who use our oil on their motorcycle equipment.<\/p>\n\n\n\n

We have already told you more than once about how our oil for two-stroke engines differs from those on the market. We also compared it with other oils. This time we decided to make a destructive test.<\/p>\n\n\n\n

You have probably seen many times on the net, how saws are forced to work at maximum speed until their piston jams. We have planned to do something similar and decided to bring the chainsaw to maximum rpm and let it work for 8 hours. The main purpose of this test, of course, was not to test the chainsaw, but to test our two-stroke oil.<\/p>\n\n\n\n

Since the chainsaw we took for testing had already worked a lot of hours on its original oil, we started by disassembling it. The purpose of this measure is to record the condition of the cylinder and at the same time to completely clean the parts from the previous deposits. In the future, this will allow us to assess the changes and the amount of fouling that has formed.<\/p>\n\n\n\n

The autopsy showed that the condition of the piston and cylinder walls is almost in perfect condition. Minor scuffs, of course, were both on the cylinder walls and on the piston skirt, but their character spoke not about the lack of lubricating properties of the oil, on which the saw had been operated before, but about the poor quality of air filtration. Sand grains that had gotten in through the filter leaks had left their mark on these parts. After a condition assessment and complete cleaning, the saw was reassembled. For safety reasons, we did not reinstall only the bar and chain.<\/p>\n\n\n

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Before the test, the old carbon deposits were removed from the bottom of the piston<\/div>\n <\/div>\n\n\n
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The piston skirt had minor scuffs before the test<\/div>\n <\/div>\n\n\n
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The combustion chamber was cleaned of previous deposits.<\/div>\n <\/div>\n\n\n\n

According to the operating instructions, the engine oil for our saw should be diluted in the ratio 1\/40. That is, 25 ml of oil per 1 liter of fuel. The oil was taken from the tube with a syringe for accuracy. The fuel mixture was diluted in a measuring cup.<\/p>\n\n\n

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Manufacturer’s recommendations for preparation of the mixture<\/div>\n <\/div>\n\n\n
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25 mL of oil was taken from a 200 mL tube each<\/div>\n <\/div>\n\n\n
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The oil was poured into a measuring container<\/div>\n <\/div>\n\n\n
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Filled with gasoline to the 1000 ml mark<\/div>\n <\/div>\n\n\n
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The chainsaw tank holds 500 ml of fuel<\/div>\n <\/div>\n\n\n\n

After refueling, the saw was fixed on the frame and the tests began. It must be said that a chainsaw running at 11000 rpm (maximum speed according to the passport) is a pleasure for those who are near it. You can put up with it for the first five minutes, but then your eardrums start to tingle in time with it. After all, it is 110 dB.<\/p>\n\n\n

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The saw is fixed to the frame. The throttle button is secured with a cable tie<\/div>\n <\/div>\n\n\n\n

Ten minutes later, however, the chainsaw roared with even higher revolutions and stopped. At first it looked like it was finished. But it wasn’t that bad. It just ran out of fuel. After refueling the saw continued to work as if nothing had happened. Only one thing was upsetting. It turned out that you need to refuel its 0.5 liter tank every 10 minutes. That means you have to be on duty around it. I was glad that at least it didn’t smoke.<\/p>\n\n\n

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