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Old 6 Dec 2017, 09:37 (Ref:3785395)   #76
knighty
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knighty should be qualifying in the top 5 on the gridknighty should be qualifying in the top 5 on the grid
I have to say, after seeing the monstrosity of twin-turbo exhaust systems on both the AER-BR-Dallara and the Nissan-Kolles cars......the single central turbo Ginetta will look awfully more sleek in comparison........much like the audi-Diesel was, the side pod exit was much clearer of clutter.

The Kolles in particular almost blocks off the entire side-pod outlet with turbos,pipes and wastegates.......I believe the side-pod exit helps drive the aero of the rear diffuser.......hardly a small consideration in the aero department.
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Old 6 Dec 2017, 13:21 (Ref:3785429)   #77
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We have to remember that the Peugeot 908 V12 had side exit exhaust and so did the Porsche RS Spyder, Acura ARX-02 and the Acrua/HPD ARX-01c. I know that's years ago, but it didn't seem to harm those vehicles performance.

Not to mention that the Pug had particle filters and the Porsche and Acura/HPD cars mentioned had mufflers in the sidepods. I'd think that a bigger issue would be heat from the exhaust messing with tire pressures
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Old 6 Dec 2017, 17:18 (Ref:3785487)   #78
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https://mobile.twitter.com/vitalypet...60885139558400

I do enjoy some popping and banging
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Old 6 Dec 2017, 17:38 (Ref:3785494)   #79
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https://mobile.twitter.com/vitalypet...60885139558400

I do enjoy some popping and banging
The sound is good indeed!
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Old 7 Dec 2017, 06:06 (Ref:3785596)   #80
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Motorsport.com has some images from testing!
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Old 7 Dec 2017, 08:01 (Ref:3785608)   #81
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knighty should be qualifying in the top 5 on the gridknighty should be qualifying in the top 5 on the grid
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https://mobile.twitter.com/vitalypet...60885139558400

I do enjoy some popping and banging
I believe this is possibly part of the anti-lag strategy (ALS) to keep the engine boost pressure up to a drivable level, whereby some extra fuel is injected when off-throttle, it ignites when it touches the hot exhaust manifold and causes a series of bangs through the exhaust turbine to keep it spinning for constant boost.

over-fuelling is generally frowned upon in endurance racing as you are otherwise wasting precious fuel......they possibly also have a fresh-air valve system to help air bypass the engine and go straight into the exhaust to help keep boost pressure up.

It was an ALS system pioneered in the early days of Turbo F1 cars in the 1980's, and then exploited further in WRC in the 1990's.......but the bangs were on another level.
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Old 7 Dec 2017, 08:04 (Ref:3785609)   #82
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I believe this is possibly part of the anti-lag strategy (ALS) to keep the engine boost pressure up to a drivable level, whereby some extra fuel is injected when off-throttle, it ignites when it touches the hot exhaust manifold and causes a series of bangs through the exhaust turbine to keep it spinning for constant boost.

over-fuelling is generally frowned upon in endurance racing as you are otherwise wasting precious fuel......they possibly also have a fresh-air valve system to help air bypass the engine and go straight into the exhaust to help keep boost pressure up.

It was an ALS system pioneered in the early days of Turbo F1 cars in the 1980's, and then exploited further in WRC in the 1990's.......but the bangs were on another level.
Is the air valve bypass the system that Ford use in the GT? Seem to remember something about that. It is a funny sounding thing on the over run.
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Old 7 Dec 2017, 14:15 (Ref:3785666)   #83
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knighty should be qualifying in the top 5 on the gridknighty should be qualifying in the top 5 on the grid
quite possibly........its common in motorsport as an ALS system for any turbo motor......its commonly mistaken for an EGR valve, but its completely the opposite.

I think the Ford 1.0 3-cylinder tubo eco-boost motor actually uses one in mass production.
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Old 18 Dec 2017, 11:52 (Ref:3787851)   #84
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helgi should be qualifying in the top 5 on the gridhelgi should be qualifying in the top 5 on the grid
Some video from testing in Portugal - https://twitter.com/twitter/statuses/942737706282573824
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Old 18 Dec 2017, 13:30 (Ref:3787863)   #85
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Some video from testing in Portugal - https://twitter.com/twitter/statuses/942737706282573824
Good to see them out testing. Should put them ahead of some of their competition on that front.
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Old 18 Dec 2017, 16:09 (Ref:3787900)   #86
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Good to see them out testing. Should put them ahead of some of their competition on that front.
And ByKolles is testing too! Not sure if it's the same track though.
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Old 22 Dec 2017, 17:02 (Ref:3788725)   #87
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Damian Baldi should be qualifying in the top 10 on the gridDamian Baldi should be qualifying in the top 10 on the grid
Lot of good pictures of BR1 testing at Portimao

https://www.motorsport.com/wec/photo...lery/?r=193873
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Old 1 Feb 2018, 15:11 (Ref:3797480)   #88
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Damian Baldi should be qualifying in the top 10 on the gridDamian Baldi should be qualifying in the top 10 on the grid
More testing for the BR1

Translated from french

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Presented in Bahrain during the FIA WEC final, the BR1 has since cut asphalt in southern Europe. The LMP1 is back on track these days. SMP Racing has settled in Navarra for two days of driving with a BR1 sprint version. The team will work on the suspension and ride as much as possible.

Vitaly Petrov, Egor Orudzhev, Mikhail Aleshin and Matevos Isaakyan take turns driving the BR1 in Spain.





source
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Old 1 Feb 2018, 21:02 (Ref:3797582)   #89
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This car/teams have definitely got the jump on the others in terms of testing. Only the ByKolles car has been running nearly as much so far. I'm sure the Rebellion will be based closely to the lmp2 Oreca so they have that to go on, but they definitely will need to upgrade the aero and understand the tires. I can't wait to see how they all perform relative to eachother and Toyota.
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Old 19 Feb 2018, 15:22 (Ref:3802434)   #90
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Here is SMP Racing Testing the BR1 with a low aero downforce kit. With many of the front end winglet elements gone. Also it looks from this angle the car is sporting a much shorter front overhang. I wonder if SMP Racing are going to run one of the cars with the higher downforce package at Spa and the other with the lower downforce package.

https://ibb.co/e32ei7
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