"Khalbali" (khalbali)
03/20/2016 at 02:16 • Filed to: None
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"Khalbali" (khalbali)
03/20/2016 at 02:16 • Filed to: None | 0
| 6 |
Just want to see if any OPPOs can explain something I’ve noticed this winter, I DD a Miata and have noticed that when engine braking in slippery conditions, I start to fish tail a little. Shouldn’t the rear wheels be slowing the car down? So how would I be losing traction like that?
iSureWilll
> Khalbali
03/20/2016 at 02:18 |
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They lose traction the same way it does on the brakes. The engine braking slows the wheels down faster than what available traction allows for.
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wafflesnfalafel
> Khalbali
03/20/2016 at 02:23 |
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Engine compression braking is still braking. I had a similar experience years ago in an older Nissan Sentra in snow. We were going down a slight incline and it was quite slippery - I down shifted to third thinking that would help control the speed of the vehicles, but the compression braking alone was enough to break the front tires loose causing the car to skid. The solution was to simply (and quickly) depress the clutch and voila, going straight again!
XJDano
> Khalbali
03/20/2016 at 02:23 |
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Wheels go slower than the car is moving, just like when wheels go faster than the car is moving.
Kind of like locking up the rears, but still rolling.
AntiSpeed
> Khalbali
03/20/2016 at 02:25 |
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Engine braking on a RWD car is 100% rear bias. The front wheels should do the larger portion of slowing the car down, since weight shifts forward when slowing down. If you use the rear tires too much like that, they lose grip and the car becomes squirly.
Urambo Tauro
> Khalbali
03/20/2016 at 11:38 |
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You’ve got the right concept; engine braking does indeed affect the drive wheels.
But the main variable here is those slippery conditions. If you’re exceeding the tire’s limits of grip, all bets are off. No traction, no braking.
You can tell a Finn but you can't tell him much
> Khalbali
03/20/2016 at 12:37 |
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When driving in slippery conditions use the brakes to slow down. Besides having ABS, brakes have a proportioning valve that properly distributes braking forces across the front and rear axles.
When you engine brake you don’t really have control over how much braking force is being applied and it is only being applied to the drive axle. It is kind of like using the handbrake to slow you down except it is even more difficult to modulate how much braking force you are applying.