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N Camarolina · 06-11-2022, 05:14 PM

Thanks so much for doing the test and taking the time to post the results.

My read on your data is similar to yours. Assuming that the calipers are a good enough indicator of pad and rotor temps, and with the Caveat that your test track didn't have long straits, it looks like the SS and CT5-V BW deflectors don't add a detectable cooling benefit to the SS 1LE unless you are using vented pistons. I compared your achieved temps (around 320 on OEM pistons) to the Ferodo pad temp graphs and noted that that particular temp is just slightly past where the SS 1LE OEM pads tend to start giving up a little friction vs their peak. Thus achieved temps with totally OEM setup (SS 1lE deflectors) yields an track temp that is just within optimal pad temp limits, which makes sense from an engineering stand point.

I had some hope that the CT5-V BW deflector would have added more cooling than the OEM 1LE deflector (it certainly looks more serious about directing air). As it presumably was designed for the BW brake and suspension geometry, perhaps it's not directing the air optimally for the SS 1LE?

I also noted the SS deflector doesn't seem to help either on a SS 1LE rig. Here, my guess would be that the air being scooped from under the car is interfering with the air coming in through the 1LE's dedicated brake venting (through the front facia) and effectively contributing no net increase in air flow to the rotors/calipers.

Might be nice to do a test at another track with a bit more/longer straights to confirm, but I'd think this track was perhaps more relevant to the question of brake cooling than a track with long straights. After all, if the straights are long, brake cooling with stock 1LE pads and deflector is not an issue.

06-11-2022, 05:14 PM	#35
N Camarolina Drives: 2021 2SS 1LE Join Date: Aug 2020 Location: Cary, NC Posts: 975	Thanks so much for doing the test and taking the time to post the results. My read on your data is similar to yours. Assuming that the calipers are a good enough indicator of pad and rotor temps, and with the Caveat that your test track didn't have long straits, it looks like the SS and CT5-V BW deflectors don't add a detectable cooling benefit to the SS 1LE unless you are using vented pistons. I compared your achieved temps (around 320 on OEM pistons) to the Ferodo pad temp graphs and noted that that particular temp is just slightly past where the SS 1LE OEM pads tend to start giving up a little friction vs their peak. Thus achieved temps with totally OEM setup (SS 1lE deflectors) yields an track temp that is just within optimal pad temp limits, which makes sense from an engineering stand point. I had some hope that the CT5-V BW deflector would have added more cooling than the OEM 1LE deflector (it certainly looks more serious about directing air). As it presumably was designed for the BW brake and suspension geometry, perhaps it's not directing the air optimally for the SS 1LE? I also noted the SS deflector doesn't seem to help either on a SS 1LE rig. Here, my guess would be that the air being scooped from under the car is interfering with the air coming in through the 1LE's dedicated brake venting (through the front facia) and effectively contributing no net increase in air flow to the rotors/calipers. Might be nice to do a test at another track with a bit more/longer straights to confirm, but I'd think this track was perhaps more relevant to the question of brake cooling than a track with long straights. After all, if the straights are long, brake cooling with stock 1LE pads and deflector is not an issue.