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New Bosh iDisk tungsten-coated brakes by Chris_narf
Started on: 11-22-2017 12:41 PM
Replies: 4 (353 views)
Last post by: Chris_narf on 11-23-2017 01:37 PM
Chris_narf
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Report this Post11-22-2017 12:41 PM Click Here to See the Profile for Chris_narfSend a Private Message to Chris_narfEdit/Delete MessageReply w/QuoteDirect Link to This Post
Taken from the article on Autoblog:
 
quote
Bosch's new brakes last longer, keep wheels clean and reduce emissions

When you think automobiles and emissions, you generally think internal combustion engines. Gasoline, diesel and smog-choked cities. While exhaust fumes make up the bulk of particulate emissions, brakes and tires are also significant contributors, with brake dust being a huge offender. Reducing brake dust could have a significant effect on a vehicle's overall impact on the environment, which is why Bosch has announced its new iDisc tungsten-coated brakes, which will reduce brake dust up to 90 percent compared to what's currently on the road.

It's difficult to make brakes sound sexy. It's not like electric turbocharging or even something like Mazda's compression ignition tech. Still, reducing brake dust and extending brake life is something you can wrap your head around. Rotors will last about twice as long, and wheels won't get as dirty, something particularly prevalent on European cars. Bosch says that braking performance is roughly the same as a carbon ceramic rotor in terms of stopping power and brake fade. These rotors won't rust, either.

The new tungsten coating is applied to cast iron rotors, giving the rotors a neat polished look as they wear in. As Bosch is the only company in the world making these rotors, it's likely the supplier for the Porsche Surface Coated Brakes on the new 2019 Cayenne, though Bosch won't say for certain.

The cost will be the biggest barrier of entry for iDisc brakes. Bosch says that they cost roughly three times as much as a standard cast iron rotor. That still makes them three times less expensive than carbon ceramics. Mass production should help reduce costs, too.


Those would be pretty awesome as part of a Fiero brake upgrade.

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-Chris
'85 V6 SE 4sp (SOLD)
'88 GT - Series 3 SC3800 w/ 3.5" pulley, 1.8" rockers, 3" exhaust, 3.5" intake, 3.29 gearing. Installed and tuned by Sinister Performance
'99 Kawasaki Vulcan 500, owned since new
'09 G37x Sedan w/ Premium & Nav (wife's car)
'14 Yamaha FJR - 0-60 in 2.8s w/ 34MPG!!!

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pmbrunelle
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Report this Post11-22-2017 06:50 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
They say it's a coating over cast iron rotors... so once the coating wears through, then it's dust as usual?
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Chris_narf
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Report this Post11-22-2017 06:55 PM Click Here to See the Profile for Chris_narfSend a Private Message to Chris_narfEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by pmbrunelle:

They say it's a coating over cast iron rotors... so once the coating wears through, then it's dust as usual?


Not really sure, but hopefully it would take a LONG time for the coating to wear through. If we wait a bit, we can call up a Porsche dealership and ask what the expected service life is of the rotors for a Porsche Cayenne. I could easily live with a 15-20k service life.

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theogre
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Report this Post11-22-2017 09:38 PM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
Lasted longer? More likely a gimmick to get more money from suckers. Like Many coatings for tools do not double or more the life for wear out but cost a lot more. Most helps for rust a lot but for wear very little. Worse, many "owners" at high dollar level Lease them for 3-5 years. If kept longer many do not service themselves just write a check to the dealers that rob them. So you're likely to never get a real world answer to life time.

Dusting is mostly a pad compound problem. Most Anything fighting dust means less pad worn for braking. Pads need to Wear for braking and softer then rotors. If Hard coating on rotors works then pads could be harder to wear less but may have other problems like stopping in wet weather. (Pad can hydroplane etc too. Even giant disk sets used in Amtrak et al trains can have brake issues in wet/snow weather.) If hard coating on the rotors fails then the iron base metal will quickly wear out.

"Brake pollution" is why EPA and others are limiting Copper and other things for pad/shoe compounds.
Many products now on the market and as OE from car makers are Low or 0 copper compounds.
Example: Wagner ThermoQuiet brake pads labeled OE21 Low Copper.

Google: low copper brake pads

Side note: Wagner now list ThermoQuiet for all Fiero again but only for Pepboy at www.wagnerbrake.com but others do have them. They stopped making/carrying them a few years back. Many PFF users love them including me.
TQ often get a rebate 1 or 2 times a year and often go on sale or cheaper at some outlets making them cheap as low grade pads available. If you think you need pads in next year watch for the rebate and get them then.

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)


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Chris_narf
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Report this Post11-23-2017 01:37 PM Click Here to See the Profile for Chris_narfSend a Private Message to Chris_narfEdit/Delete MessageReply w/QuoteDirect Link to This Post
Agreed, the "lasts longer" and "EPA" stuff is just marketing. What really caught my eye was the performance characteristics vs. carbon ceramic. If we can get C4/C5 rotors with those kind of specs at a fraction of the cost of carbon ceramic, that would be interesting (for those that have deep pockets).
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