Single disk flywheel resurfacing

Are there scores in the flywheel or is it just glazed? If you want it ground, take it to a machine shop. They have grinders just for that.

 

New single disc flywheel from the underground lair of Mad Dog Clutches. This is the first one we've had in stock at Ricambi America. Sweet!
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How much is the Ferrari Tax on that friction plate? I've paid $75 for replacement friction plates for other cars, and that's on the high side.

 

It is a flywheel, not a friction disc.

These are made of chrome moly billet, while the original Ferrari (Valeo/AP) ones were cast steel. These flywheels are made by Mad Dog Clutches in the UK (Andrew Holman, an Fchatter). They are $825/each.

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Ahh, sorry I misread. I thought it was just the replacement disk you were talking about. But still, $825 isn't too bad. I thought it would be triple that.

 

Hi Daniel, are you sure about that? Normally, chrome moly referes to 4130 tubing - my guess is these are 4140 steel.

That is a very fair price for that part....

 

According to the manufacturer, yes. It weighs 3.243 kilograms on our shipping scale.

But TBH, my knowledge of metallurgy starts and stops with hockey skate blades. Beyond that, I rely on what my suppliers explain to me. I'll try and get further clarification from Andrew today.

 

OK I just wet myself

 

That looks very nice! Might be added/needed on my next clutch/gearbox service.

 

Evening all, it is a forged chrome molly billet we use, it is a direct replacement for the originals, having a harder surface yet similar friction properties to the original cast ferrari items (only available attached to an expensive voith system of course}.
we also do lighter versions of the 348 single and are working on a light 355 and cover other models from 250 to 430. Hope that helps and all available from Daniel soon!
Here is a link to the 25% lighter 348 single
https://scontent-a-lhr.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/p526x296/10300501_324936457669228_334497766371609710_n.jpg?oh=5f6f8c0d1bde6d96b5589d6073b66cf9&oe=5546E119

 

Yes 355; I am here come to daddy
Please keep me updated

 

Awesome Mad Dog! Kudos!

Hey Mad Dog, Are these new flywheels cut flat or 0.010" dish or?

 

well just between us two, re the 355, whilst the standard replacement is very similar to the original, apart from a greater resistance to dishing we think and harder wearing with sinitered plates. what i wanted to try in mine now was a unit that did away with the voith system altogether.
so we are near to finishing off a base that bolts into the pumpkin bearing as normal, but then bolts to a new flywheel that has a starter ring built into it.
that replaces the voith and old flywheel completely. so what about the damping I hear you ask?
Well we are using a 360 friction plate that has springs built into it. although it has a hub with finer splines, so we make it bigger to fit 355 drive shaft.
simples!
well in theory! That then fits into a standard 355 pressure plate in same place as original using standard thrust bearing.
Then i reckon that friction plate can use either sintered, organic or kevlar.
but this all needs finishing early in new year and then some testing! Fortunately I have a spare drive shaft if anything bad happens but the experts we are working with are very hopeful re their design and all stress tested in computer designs etc.

 

The LW flywheel set-up has already been done...

First by Michelotto...see pic...car in first video has this.


https://www.youtube.com/watch?v=j7ZvQCwTwyE


Second video is a test from a Japanese Clutch/Flywheel MFG....I spent 6-8 months trying to get this released in USA and the company abandoned this venture,


https://www.youtube.com/watch?v=0ZUxiLykyAM


There is another company in Germany selling a LW set-up and feedback from a user in USA said it severally overheated.....also propellar shaft snap
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The Michelotto developed and produced assembly was included in the Ferrari Parts Manual for the 348GT...it was also used in the 355GT
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I did that in my junky garage on my 348 racecar. Lost 8-9lbs on the flywheel welded in solid and had the unit balanced. I proved the concept and raced it for a number of years and never wore it out before I crashed the car. Stock driveability was intact. I could have taken off more weight. The 355 is similar. Also, much of the light flywheel multiplate tricks have all been done before with Tilton in buelton, Ca. Check with them they can probably make something and send it to you because they probably have the info archived. Tilton has always been the go to guys when you want to custom play.

 

formula GT - TUNINGTEILE

German company mentioned now claims they have driveshaft that is indestructible. Alot of money spent just to rev quicker.

 

looking forward to the results

 

Test unit just back from shop. Just going off to test this little beauty and see how much springing i need to put into a friction plate.
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Mad Dog looks great

Did you properly balance that?
What clutch are you using?

 

no havent balanced it yet, needs a few more tweaks to design first.
That is a standard 355 on there, but beauty of it is you can put anything you like on it really, so will look at a lightweight unit when get finally sorted.
i did weigh it when all together and looks like half the weight at present at 6kg. without clutch, but potential to loose some more i think.