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FF

Brake cooling ducts

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Hi guys,

I was thinking to install in the car brake cooling ducts to help the front brakes during hard times. 

Anyone installed them? There is a kit available somewhere?  

 

Thanks in advance 

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If I will find a kit I will inform you but seems that no one developed a kit until now.

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18 hours ago, FF said:

seems that no one developed a kit until now.

Not sure it is any really needed in an Exige - it's got a rather favourable combination of weight, brakes size, tyres size. Did you experience any issues with the brakes?

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2 hours ago, vd9 said:

Not sure it is any really needed in an Exige - it's got a rather favourable combination of weight, brakes size, tyres size. Did you experience any issues with the brakes?

The power of the brake is not an issue because they are sized correctly. But after some hard laps (3/4) they start to vibrate due to the heat. I am always doing 2 cooling down laps and seems to be fine but is really annoying that after few hard laps they start to vibrate. I will upgrade in the near future the brakes with the system offered by Dave of Seriously Lotus. That look fantastic and for sure they will improve the driving experience. To help to keep everything cool as much as possible I was thinking to install the brake ducts. In my opinion is a good solution to improve the life of the brakes. I am looking for a kit but seems to be there isn't available at the moment. 

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@FF I actually have the same experience as you, with PF08 pads. Both sets I've had get a bit grumbly after they get hot on track, all fine after a cool down. This is not disc specific, either.

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1 hour ago, Arun_D said:

@FF I actually have the same experience as you, with PF08 pads. Both sets I've had get a bit grumbly after they get hot on track, all fine after a cool down. This is not disc specific, either.

Thanks Arun_D for your feedback.

Yes you are right part of the issue are the brake pads. I think with the brake upgrade kit and the brake ducts I will solve the issue. Especially here in Qatar where the temperatures of the evening track days during the season range from 20 C to 30/32 C 

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Brakes having a "vibration/juddering" doesn't sound like a heat issue but rather a brake bedding issue --- uneven pad material transfer, sometimes referred to as "pad smear" will rear it's ugly head as the brakes get HOT.

From the experts:   

"The all-important transfer layer:

........ the objective of the bed-in process is to deposit an even layer of brake pad material, or transfer layer , on the rubbing surface of the rotor disc. Note the emphasis on the word even, as uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.

Let's say that again, just so there is no misunderstanding. Uneven pad deposits on the rotor face are the number one, and almost exclusive cause of brake judder or vibration.

It only takes a small amount of thickness variation, or TV, in the transfer layer (we're only talking a few ten thousandths of an inch here) to initiate brake vibration. While the impact of an uneven transfer layer is almost imperceptible at first, as the pad starts riding the high and low spots, more and more TV will be naturally generated until the vibration is much more evident. With prolonged exposure, the high spots can become hot spots and can actually change the metallurgy of the rotor in those areas, creating “hard” spots in the rotor face that are virtually impossible to remove.

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Jack
2008 2-Eleven
2015 Exige V6 CupR
Track videos ... http://www.youtube.com/jackcup
2010 Lotus Challenge Series ULTRA Class champion
2012 Lotus CUP USA OPEN Class champion

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On ‎03‎/‎12‎/‎2018 at 12:42, Arun_D said:

@FF I actually have the same experience as you, with PF08 pads. Both sets I've had get a bit grumbly after they get hot on track, all fine after a cool down. This is not disc specific, either.

I had this issue with stock discs and PF08, no issues since I swapped to the new bigger discs.

As Jack mentions, bedding in properly is key to smooth braking on track.

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Looks like funnel and pipe (not included) from underside of the car. Any idea how much each unit weighs? 
 

 

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10 minutes ago, W31SSN said:

Looks like funnel and pipe (not included) from underside of the car. Any idea how much each unit weighs? 
 

 

I just don't think there is room under the car and the front side grills are typically blocked by the rads.


www.alias23.com

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I am asking some details to eliseparts. They have released many interesting new products for the V6. 

But like for AIM it seems that I am mot as credible as you and not always easy to get answers from manufacturers, sellers... 

 

 

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4 hours ago, W31SSN said:

Looks like funnel and pipe (not included) from underside of the car. Any idea how much each unit weighs? 
 

 

questions sent to eliseparts with also more details about the installation and where to installs the pipes.

as I understand after 4 years, hardware is important but if you don't have the good advices, knowledges, feedbacks it's complicated to "take the plunge". (and this is why I am really grateful to the TLF and members who share their experiences whatever they are)

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16th-lot-17.jpg

 

16th-lot-19.jpg

 

16th-lot-24.jpg

 

 

@alias23 @W31SSN I asked about the pipes. where the pipes are installed to get the airflow ? For me it's not clear. Under the car ? through the clamshell ? behind the front grille ? 

Just got an answer :

"
There are many places to run the pipework but I had the Front pipes run to the intake on the front clamshell
Rear vent to the clamshell side vents or under tray.

"

 

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It appears a good system, however there seem to be lots of different parts bolted together - would only need a small failure in one for it to cause real problems. 
Most people seem to run modified back plates (some metal some carbon) with success.

Seems like a job for @alias23 

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This design of brake ducting doesnt have to have the feed pipes sitting in direct airflow.

The brake disc is effectively a un-housed fan impeller. By adding the backing disc you've now "housed" the impeller which will create a suction. You only have to feed the ends of th{ piping somewhere near a fresh air feed and it will draw it's own supply in, you don't need to force it in.

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7 minutes ago, FF said:

I installed this kit and after 2 years is working fine.

Great !  Did you install  it also on the rear brakes ?

 

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1 minute ago, geartox said:

Great !  Did you install  it also on the rear brakes ?

 

Only in the front. Honestly I never felt the need on the rear ones. 

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8 hours ago, alias23 said:

How did you attach @FF to the upright?

In the kit there were 2 metal supports that needed to be bolted to the wheels hubs. This supports will be connected with the fresh air feeding pipe.

I got this kit complete of all the parts including bolts and air feeding pipes from Italy and there were included fitting instructions with pictures step by step. Very easy to install. 

 

IMG-20190107-WA0001.jpg

Edited by FF
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