SKU: 52703979017

Luk OE Quality Dual Mass Flywheel - BMW

Sale price$607.50 Regular price$675.00
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Description

Luk OE Quality Dual Mass Flywheel - BMWLuK dual mass flywheels absorb engine vibrations before they are transmitted to the driveline where they can create gear rattle. These units feature a built in damper designed to isolate engine torque spikes and prevent transmission damage. By design, dual mass flywheels cannot be resurfaced. This all makes the LuK dual mass flywheel the ideal solution. With one drawback: the higher the mass reactance of the vibrating masses, the more excessive the

LuK dual-mass flywheels absorb engine vibrations before they are transmitted to the driveline where they can create gear rattle.

These units feature a built-in damper designed to isolate engine torque spikes and prevent transmission damage. By design, dual-mass flywheels cannot be resurfaced.

This all makes the LuK dual mass flywheel the ideal solution.
With one drawback: the higher the mass reactance of the vibrating masses, the more excessive the resonance increase and associated torque peaks. With the dual mass flywheel, this would be easily perceived when starting and stopping the engine; much more easily than with a conventional clutch system. Additionally: the smaller flymass of the engine has less of a stabilizing effect on the speed fluctuation of the engine.

Thanks to decades of experience in clutch building, the LuK specialists were able to find an excellent solution to this problem. An additional damping device effectively prevents resonance overload. In normal operation, however, this additional damping device has no function and the torsional vibrations of the engine are filtered out by spring dampers.

Friction and spring rate - the correct ratio is important.
For optimal vibration isolation and soft resonance passage when starting and stopping the engine, the ratio between friction and spring rate must be optimal. The length of the springs is a key factor: The softer a spring, the more efficiently vibrations are isolated. The extra-long springs of the latest generation of dual mass flywheels significantly reduce the spring rate compared to a first generation dual mass flywheel. In routine driving operations, excessive resonance increases are kept almost completely away from the gearbox.

Features and Benefits:

  • Top driving comfort
  • Absorbs vibrations
  • Prevents noise
  • Enables comfortable, low-revs driving
  • Saves fuel
  • Relieves crankshaft and gearbox



    OE Part # 's


    21-20-7-573-785 / 21 20 7 573 785 / 21207573785

    21-20-7-541-150 / 21 20 7 541 150 / 21207541150

    21-20-7-556-565 / 21 20 7 556 565 / 21207556565

    21-20-7-569-974 / 21 20 7 569 974 / 21207569974


    LuK Part #'s   DMF082 / 4150389100

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Exchange/Return Notes
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SKU: 52703979017

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4.6 ★★★★★
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A
Verified Purchase
Allison Friend
Phoenix, US
★★★★★ 5
Perfect
Format: Hardcover, Format: Hardcover
Bigger than I realized. Cute book for my 7&8 year olds
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 23, 2020
M
Verified Purchase
Meladie Rose
West Palm Beach, US
★★★★★ 5
What a wonderful story about the history of our country
Format: Hardcover
I'm so glad that I brought this book for our home library! It is really fun to read for children and adults alike. I love the historical information shared and what a great jumping off point for more exploration about the topics described in the story.
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Reviewed in the United States on August 4, 2019
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Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Great children book
Format: Hardcover
It is a wonderful children's book .I will interest them in visits to to museums
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Reviewed in the United States on October 31, 2021
C
Children's Lit Love
Los Angeles, US
★★★★★ 5
Interesting book about the flag that inspired the National Anthem
Format: Hardcover
Our Flag Was Still There: The True Story of Mary Pickersgill and the Star-Spangled Banner, written and illustrated by Jessie Hartland, was released just last month. I requested it from the library months ago... Unfortunately, it didn't make it to my hands before I published my 4th of July booklist, but I have it now, and it's wonderful! ⠀⠀⠀⠀⠀⠀⠀⠀⠀ Our Flag Was Still There this tells the story of the flag that eventually our National Anthem. While I knew the story of Francis Scott Key’s inspiration, I didn’t know anything about the actual flag that he saw, nor did I realize that I’ve seen it myself. I didn't realize how big it was, how long it took to make, or that it was made largely by a group of women. And then I read this book! ⠀⠀⠀⠀⠀⠀⠀⠀⠀ But this story is about so much more than just a flag. Through her words and illustrations, Hartland gives a little information about America's independence and the War of 1812, which led to the commissioning of this extra-large flag. We meet the widow, Mary Pickersgill, and her family and indentured servant, who worked together to make this enormous symbol of our country. Hartland introduces the British attack of Fort McHenry in Baltimore. And then we see Key, who witnessed the attack from a boat and penned a poem in honor of the victory and the American flag that was still flying proudly over the city. Finally, we learn about how Key's poem eventually became our national anthem, as well as what happened to her famous flag between 1814 and present-day. ⠀⠀⠀⠀⠀⠀⠀⠀⠀ Yes, Our Flag Was Still There teaches a little bit of history, but it also honors hard work and women from a time in history from which we know mostly men. I appreciate the relative simplicity of the illustrations, as many historical picture books have so much going on in the illustrations that it's hard to know where to look. Like me, you may appreciate knowing the history of the flag behind the song and the realization that you've seen that flag before (in the Smithsonian Museums)!
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Reviewed in the United States on June 30, 2019
D
Deb Nance at Readerbuzz
Natrona Heights, US
★★★★★ 5
The story of a very big flag that inspired a song and a nation
Format: Kindle, Format: Kindle
Major George Armistead wanted to send a big message to the British, on their way to capturing Baltimore. It was 1813 and once again America and Britain were at war. Major Armistead wanted to say to the British: This land belongs to America. He needed a flag, a big flag, a flag over forty feet across. But who could make such a huge flag? Mary Pickersgill could. With the help of the women in her shop, Mary Pickersgill did. This is the story of the enormous American flag that now hangs in the Smithsonian. It's a reminder of Major Armistead's desire for America to be free. It's a reminder of the Star-Spangled Banner, our national anthem inspired by this flag. What a wonderful tribute to this flag and the flag makers. I love the storytelling and the illustrations of Jessie Hartland.
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Reviewed in the United States on June 15, 2019

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