Vehicle & Technical > Range Rover

Brakes.... should they stop you?

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Jonny Boaterboy:
If i drive up a 45 degree slope (I have a suitable one near me which is block paved see pic) and stamp on the brakes the front ones lock up and the rear wheels don't.... and i slide down the slope with the front locked up and the rear wheels rotating..... This carnt be right can it? has anyone got any ideas as to why this could be happening?

It has traction control, abs and the rear discs look scored but that shouldnt stop them locking up should it?

Tar

Jonny

Range Rover Blues:
That way round, weight transfer.  Given that the rear wheels are so far under the car when it's on level ground think how far back the C of G is when on a 45 degree slope? the front end must be loads lighter.

Have a look at your tyres for bulging as a rough guide to how much the weight has shifted.

BTW, if you are locking up the fronts and the backs are going round your viscous unit is fine :D

waveydavey:
I know older cars used to have an anti lockup valve for the back wheels to help stop cars spinning.

Jonny Boaterboy:
Hey there Mr blues..... good point about the viscus  :wink: however even if your center of gravity is way over the rear wheels you should be able to lock them up surly? otherwise how are you supposed to stop yourself on a failed hill climb? I understand that you have different brake forces for the front and rear wheels but I thought if you press the brake pedal hard enough there should be enough pressure to lock the rear wheels as well

The reason this came to my attention was because on a recent trip up north I had an empty trailer on the back, a fairly big one, and while coming down a long steep hill you could smell the burning of the pads with a touch of brake fade...... Surly a range rover that can tow 3.5 tone and has twin vented discs  should'nt  get brake fade with an empty trailer? Thats why I started to look at whether the rear brakes were doing there job?

what do you think?

ps I havent forgot about the air surspension info will get onto it soon

redhand:

--- Quote from: "Jonny Boaterboy" ---If i drive up a 45 degree slope (I have a suitable one near me which is block paved see pic) and stamp on the brakes the front ones lock up and the rear wheels don't.... and i slide down the slope with the front locked up and the rear wheels rotating..... This carnt be right can it? has anyone got any ideas as to why this could be happening?

It has traction control, abs and the rear discs look scored but that shouldnt stop them locking up should it?

Tar

Jonny
--- End quote ---


Have you tried reversing up to see what effect that has on the braking.

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