The Ford Barn

johnmi · 09-03-2015, 11:34 AM

Has anyone heard of putting a "spring steel" between the clutch disc and lining . My clutch man says this will help clutch chatter. Thanks John

Patrick L. · 09-03-2015, 11:56 AM

If you look at various disks you'll see some that have no 'cushioning' and those with flat springs between friction faces or coil springs. If getting a disk for a model A [ or almost any other car] get one with the flat metal 'guards' to keep the coil springs from escaping.

Any with some form of absorption are supposed to help with smoothness in engagement.

Fullraceflathead · 09-03-2015, 01:13 PM

Yes, they are called a Marcel spring. they put them in between the two friction surfaces.

johnmi · 09-03-2015, 02:53 PM

Does anyone know of a Model A with a Marcel spring in the disc if so how good does it work.Thanks John

40 Deluxe · 09-04-2015, 12:09 AM

It's not a separate spring. The thin steel disc that the lining is riveted to is stamped into a 'wavy' pattern when it is made. This gives it a springiness-if you look at the edge of a disc you can see a gap between the two linings. This gives a cushioning effect as the the clutch pedal is released, so engagement is gradual, as the 'springy' disc is compressed, instead of an all or nothing engagement.

Dollar Bill · 09-04-2015, 06:11 AM

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“Marcel” is the technical term for a wavy spring sandwiched between layers of a clutch disc. This spring provides a smoother engagement and release by cushioning the clutch assembly. It’s actually named for a 1920’s hairstyle, believe it or not…

09-03-2015, 11:34 AM	#1
johnmi Member Join Date: May 2010 Posts: 94	Clutch Disc Has anyone heard of putting a "spring steel" between the clutch disc and lining . My clutch man says this will help clutch chatter. Thanks John

09-03-2015, 11:56 AM	#2
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Clutch Disc If you look at various disks you'll see some that have no 'cushioning' and those with flat springs between friction faces or coil springs. If getting a disk for a model A [ or almost any other car] get one with the flat metal 'guards' to keep the coil springs from escaping. Any with some form of absorption are supposed to help with smoothness in engagement.

09-03-2015, 01:13 PM	#3
Fullraceflathead Senior Member Join Date: May 2012 Location: Chillicothe, Missouri Posts: 1,176	Re: Clutch Disc Yes, they are called a Marcel spring. they put them in between the two friction surfaces. __________________ "If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask

09-03-2015, 02:53 PM	#4
johnmi Member Join Date: May 2010 Posts: 94	Re: Clutch Disc Does anyone know of a Model A with a Marcel spring in the disc if so how good does it work.Thanks John

09-04-2015, 12:09 AM	#5
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,779	Re: Clutch Disc It's not a separate spring. The thin steel disc that the lining is riveted to is stamped into a 'wavy' pattern when it is made. This gives it a springiness-if you look at the edge of a disc you can see a gap between the two linings. This gives a cushioning effect as the the clutch pedal is released, so engagement is gradual, as the 'springy' disc is compressed, instead of an all or nothing engagement.