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Machine Mig
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 MIG WELDING GUN 10' 250AMP FITS MILLER MACHINES  US $118.95
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Here are some more information for Machine Mig:
The German Luftwaffe in July and August of 1941 encountered for the first time a previously unknown Russian fighter with a long slender nose. It was obviously powered by an inline or "Vee" type engine, which was also surprising because all the Soviet fighters up to that time were powered by radial engines and lacked the performance of the front line German fighters. The Luftwaffe pilots were taken completely by surprise by the existence of this new fighter, because their information from Luftwaffe intelligence about the Soviet Air Force was practically non-existent.
Germany's top fighter at the time was the Bf 109F and the Luftwaffe pilots were equally surprised and disconcerted, to discover this new Soviet fighter could out maneuver at high altitude, fly faster and fly longer, than the Messerschmitt. The MiG-3 had arrived!
Because in the West at that time, the Bf 109F was considered to be the best, or at the very least one of the best, air superiority fighters in the world, the MiG-3 deserves to looked at more closely. The "MiG" was the acronym of the Mikoyan-Gurevich Experimental Construction Bureau design team.
The first model was the MiG-1, a high altitude interceptor powered by a V-12 Mikulin engine that developed 1350 horsepower. It was a sleek, low wing, cantilever monoplane armed with one 50 calibre machine gun and two 30 calibre machine guns, all three mounted in the nose and sychronized to fire through the propeller arc. The first unarmed prototype achieved a top speed of 403 mph, at 20,000 feet, which made it the fastest fighter in the world at that time.
The flight testing program revealed that there were flaws in the design, so modifications were incorporated and the MiG-3 was born. It was built around a steel tube frame with duralumin skin which strengthened the frame. Outwardly it still resembled the MiG-1, but the engine had been moved forward four inches to change the centre of gravity, the dihedral of the wing of the outer wing was increased by one degree, while the height of the rear fuselage was reduced for better rear vision for the pilot. For the engine compartment, the supercharger intakes were enlarged and the radiator fairing moved forward. A 55-gallon fuselage fuel tank was added to increase the range, more armor for the cockpit and finally, four hard-points were added to the wings. This allowed for the installation of small bombs or 6 rockets.
Unfortunately, the production of the MiG-3 was abruptly ended when Stalin ordered the Mikulin engines diverted to the IL-2 attack bomber. Total production amounted to 3120 aircraft with another 50 built from spare parts and through cannibalization of wrecks. There was a later attempt to mate the MiG-3 with a 14 cylinder air-cooled radial engine, but it was not successful.
Many of the production MiG-3's had a .30 caliber machine gun mounted under each wing. This still did not give the MiG-3 firepower parity with the Bf 109F, but it did give more firepower for ground attacks.
Basic specs on the MiG-3 were: Maximum speed of 314 mph at sea level, 398 mph at 35, 590 feet. Its rate of climb was 10 mins to 26,000 feet and the service ceiling was 39,370 ft. It had a range of 512 miles at 342 mph, a maximum range of 743 miles. Empty weight of 5950 lbs and a take-off weight of 7739 with under-wing guns and a full fuel load. Its length was 27 ft, wingspan 33 feet, with a height of only 8 feet.
On paper the MiG-3 and the Messerschmitt Bf 109F were closely comparable fighters. In fact however, the 109 had the advantage of a better initial climb rate and better maneuverability at low to medium speeds and at low to medium altitudes, where most of the dogfighting took place on the Eastern front. The MiG-3 had the advantage in level speed and in range, many times the 109s had to break off because their fuel was running dangerously low. The MiG-3 also had the advantage of much better performance over 30,000 feet but the Bf 109's seldom flew that high.
The MiG-3 never got a chance to play the role it had been designed for: to combat high altitude bombers. The Luftwaffe did not build the four-engine bomber that was meant for use over the Soviet industrial areas. The Russians moved their factories east far enough that they were out of range of the twin engine bombers, so the MiG-3 was forced to fight in a low altitude arena for which it was not designed.
The Germans had one other crucial advantage, their fighters were equipped with the modern reflector gunsights. Most Soviet aircraft had simple gunsights, sometimes a circle drawn on the windshield. It was not until delivery of the P-39 and P-40 fighters that they were finally able to install modern gunsights on their fighters.
In spite of such drawbacks, some Russian pilots were able to achieve some awesome kill figures. Alexander Pokryskin scored 59 official victories, about forty in a MiG-3, the remainder in the P-39. He also destroyed an additional 13 German planes over enemy occupied territory , but these were not officially counted as they were not shot down over Soviet controlled territory. According to Pravda, Pokryshkin flew 650 missions, was involved in 156 air-to-air battles and never lost a wingman. He eventually became a Marshall of the Air Force during the Cold War.
In the last years of the war, the Yak-9 became the dominant fighter for the Soviets and probably contributed more than any other Russian fighter plane to the final defeat of the Luftwaffe. But the first bright, shining star of the Soviet fighter elements was the MiG-3.
Michael Russell Your Independent guide to Aviation
Mig Welding Aluminum: Tips for Aluminum Mig Welding
Want to find out the welding process for mig welding aluminum? In this article I'm going to tell you how to do it.
When you are welding ally with a mig welder there are a few steps that you need to take to make sure that your machine is set up to handle the job.
Type of aluminum welding wire to use
Nine times out of 10 you're going to want to use a 5356 grade aluminium mig wire. The 5356 ally wire is a little bit more firmer which makes it easier to feed through your mig welding gun.
5356 is normally used for general aluminum welding tasks such as toolboxes, truck tipper bodies and trailers.
If you need to repair cast aluminum such as cylinder heads or engine water pumps you would want to use 4043 grade.
Most welding shops will use 1.2mm diameter wire which is 0.045". The larger the diameter of the wire, the more firmer that it becomes. Because ally wire is very soft it is better to use the larger diameter wire for feed ability.
Stainless steel brush
You must use a dedicated stainless steel brush for cleaning the area where you want to weld. This is because there is an oxide layer that needs to be removed. Please make sure that you do not use this brush on anything else. It must only be used on the ally. If you use it for other jobs in the shed contaminants will get into the aluminium and contaminate the weld.
Welding torch liner type
It is required that you use a teflon or plastic liner instead of the standard steel coiled liner. This will make it easier for the wire to feed through the gun.
Feed rolls
To get more traction so that you have smooth feeding wire you will also need to get some u grooved feed rollers. Normal feed rolls are v grooved. The u shaped profile will allow for more surface area contact of the wire, thus giving it more grip to feed the wire through smoothly.
Larger contact tip
Because aluminum expands more than that of mild steel welding wire, you also need to use a slightly larger contact tip. The next size one up that is available will be ideal.
Only use the push welding technique
You need to angle your welding torch with the nozzle pointing towards the way you want to weld. By doing this the shielding gas will allow optimal coverage. If you use the pull mig welding technique you will end up having lots of black soot.
Finally you must use 100% argon gas
Argon welding gas is the proper gas to use for when you are mig welding aluminum.
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To find out more about mig welding aluminum follow this link to this website mig welding aluminum.
what kind of welder should i get?
I want to rebuilt a car and i need a welder to do some frame work and exhaust..and stuff like that... I learned how to MIG weld but i was wondering if MIG would be good enough... Even if i know how to weld, i dont know anything about the machine.. what size would i need? 120? 140...
Any kind of info or help would be appreciated
mig do not use rods btw.
go with a mig. you can weld the frame as well as panels with it. go for a gas assisted unit rather than a flux wire unit.
miller and lincoln are good. i suggest a millermatic 140
if money is a problem, check out harborfreight.com they have stores across the country.
ask about when they come on sale and sign up for the newsletter, they give you percent off coupons.
again go with a gas assisted unit, cleaner welds
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