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      08-24-2017, 07:54 AM   #89
AndyW
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Quote:
Originally Posted by WhatsADSM View Post
Where that would actually mount to? How is it collecting air exactly? Also FWIW while the outlets may be 3" I can't imagine that flows any better than a 2" or 2.5" pipe just based on design, it necks down considerably and looks like it flows into a pretty nasty 180 degree "turn".

FWIW I'm trying to get through some more testing of my duct solution and once I do I will sell my primary ducts for cheaper than that as well.
Looks like it velcros to the frame. I agree it is restrictive but I think the idea is that it lets you use "standard" 3" components and avoid any rubbing issues.
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      08-24-2017, 08:52 AM   #90
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Quote:
Originally Posted by AndyW View Post
They are pricey, but I wonder if these will work on the 135 also, so you can effectively use 3" ducting?

http://www.hardmotorsport.com/hard-m...-duct-bmw-e9x/
I am not sure why anyone would even bother with these after seeing what whatsadsm showed what he is planning to offer. I mean, custom made for the 1er, bolts up to factory locations, and puts air at the center of the rotor.
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      08-24-2017, 10:58 AM   #91
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3" does flow better than 2.5," but no one here is endurance racing lol... diminishing returns imo

2.5" is nice because it fits well. I can't imagine trying to squeeze 3" piping through a 1-series. 2.5" seems perfect.
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      08-24-2017, 11:31 AM   #92
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Quote:
Originally Posted by AndyW View Post
Looks like it velcros to the frame. I agree it is restrictive but I think the idea is that it lets you use "standard" 3" components and avoid any rubbing issues.
Yea I see its purpose now. Looks like it is used along with a bunch of other components. And its purpose is to crunch down along the frame rail to allow for more movement of ducting without contact.

With that said on the 1 series there are quite a few of us that have setups that have the hose enter the wheel well from the inside and therefore there is no need for this part at all. You simply route under the (chassis side) tension rod mount, and cut away a very small amount of the plastic underbody shield. Then its really just a matter of how you run the hose. If you want the most robust setup you actually do a longer run that snakes around a few components and then comes up and around towards the backing plate.

I run 2.5" hose that way, and I run my setup 24/7 and I have never made any contact with the hose. Lock to lock is no problem on the street with my street setup. I also never had any contact at when on track with my wider wheel/tire setup but I would have to verify if you truly wanted lock-to-lock performance with large R-comps.

So in a nut shell while it may serve some purpose on a E9x, its a very expensive solution to a problem that doesn't really exist for us.


Quote:
Originally Posted by bNks334 View Post
3" does flow better than 2.5," but no one here is endurance racing lol... diminishing returns imo

2.5" is nice because it fits well. I can't imagine trying to squeeze 3" piping through a 1-series. 2.5" seems perfect.
Agreed. 2.5" is the perfect size, and FWIW its just as easy for me to source locally as 3".

Last edited by WhatsADSM; 08-24-2017 at 11:53 AM..
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      08-24-2017, 10:21 PM   #93
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Quote:
Originally Posted by houtan View Post
I am not sure why anyone would even bother with these after seeing what whatsadsm showed what he is planning to offer. I mean, custom made for the 1er, bolts up to factory locations, and puts air at the center of the rotor.
I missed this...need to go back through the thread. A turnkey solution would be nice!
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      08-24-2017, 10:23 PM   #94
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Quote:
Originally Posted by WhatsADSM View Post
So in a nut shell while it may serve some purpose on a E9x, its a very expensive solution to a problem that doesn't really exist for us.
.
Good advice all. Will go back and read your posts on your setup.
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      09-13-2017, 09:17 PM   #95
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So, how hot do we think the dust guard gets? Thinking of going the "cheapo" route and getting this plastic flange to mount to the dust guard...

https://www.amazon.com/dp/B0035Y7DAI..._nAEUzbJ7FJ3XZ
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      09-13-2017, 11:51 PM   #96
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Quote:
Originally Posted by AndyW View Post
So, how hot do we think the dust guard gets? Thinking of going the "cheapo" route and getting this plastic flange to mount to the dust guard...

https://www.amazon.com/dp/B0035Y7DAI..._nAEUzbJ7FJ3XZ
I would be a little skeptical of ABS. Depending on the arrangement of mounting I was able to get some minor warping of Polycarbonate flanges under extreme track duty. If the mountung is done properly to relieve pressure while hot it's doable with PC... However PC has a heat resistance that is significantly better than ABS.

You have a PM.

Last edited by WhatsADSM; 09-21-2017 at 11:25 PM..
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      07-10-2018, 05:02 PM   #97
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Bump. Can anyone post some links to 2.5" mounts to attach to the brake shield?

Looking to run 2.5" ducting on my F30 due to seized calipers last track session. Tomorrow I'm going to see if the stock brake ducts have those covers on which I will remove and assess the area to see how to do the routing and hold the hose in place. I will most likely connect the hose to the stock duct up front with zip ties, route around and connect it to the metal mount on the shield. Thanks!
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