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GMJ

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Reply with quote  #1 

Hi

 

Do any of you folks who have this system use it? If so what are your thoughts?

 

In September we are going over the Alps twice and normally I would use engine braking and minimal/appropriate use of the brakes to avoid excessive heat. My concern with this system is that it autonomously operates the brakes therefore they may get too hot.

 

Thanks

 

Graham

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Clunegapyears

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Reply with quote  #2 
Just been reading this post on the other site. We’ve not got it ...
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Valkrider

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Reply with quote  #3 
Page 112 of the Ducato manual covers hill holding but there is nothing I can find in the manual about descent control.
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GMJ

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Reply with quote  #5 
Quote:
Originally Posted by Valkrider
Page 112 of the Ducato manual covers hill holding but there is nothing I can find in the manual about descent control.


It's on page 84 of mine

Graham

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loopwithers

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Reply with quote  #6 
Hi,

Don't worry about 'Hill Descent'. It will work perfectly. However, (there is always a "however" in answers like these) it is not intended for road use except in extreme circumstances.

Hill Decent is a program that measures the weight on each wheel plus the power to each wheel plus the gearing plus the brake pedal input plus the traction from each wheel plus...the tilt angle of the vehicle. It 'crawls' your vehicle down an incline while you do nothing. You just sit there and pour yourself a drink. Just turn the roundy wheel thing in front of you and avoid hitting the locals.

Nowadays, Hill Decent is almost a generic program, long since advanced and improved from when Land Rover offered it in 1999 on the Discovery 2. It links the Traction Control program to the brakes and power and tilt and gearing and the ABS. It got invented because it is almost a 'no-brainer'; if you think about it, once you have ABS and Traction Control, you can pretty easily link those two programs together and create a third called Hill Descent.

WITHOUT activating Hill Decent, your Ducato will easily handle the braking at higher altitude by itself, provided that you remain loaded within the 'plated weight' intended for your motorhome. In other words, it might struggle a bit if you are loaded beyond the maximum weight.

However, (that's two "howevers" in one answer) if you arrive at a scene ahead of you where the decent is unnervingly steep and the road surface is distressed and uneven or also wet (translates as: nasty) then bring the Ducato to a halt using normal braking and THEN engage Hill Descent for the following portion of your life.

Hill Descent 'grabs' low gear and then balances all possible inputs to the four wheels superbly so that in effect the vehicle is being driven by the computer program as carefully and safely as possible.

It is a bit un-nerving, at first. Its like an 'autopilot' setting on an airplane - but it has the huge advantage that it over-rides the standard ABS and Traction Control settings for your brakes and controls both braking AND power in a way that cannot be done without pressing that button. Lovely button. The button is your friend.

Notice that I do say that you should bring the Ducato to a halt before selecting Hill Descent.

It might not say it in the manual and you can certainly engage Hill Decent while moving but consider this:

1) If the road ahead is so bad you feel reluctant to drive over it then you better be driving slow enough in the first place to stop short. Kapish…? You Ayrton Senna...? No. You driver of  motorhome. Big and heavy.

2) Hill Descent programs gather data before operating. If you are stopped, they can gather that data faster and more accurately before they engage.

3) Hill Decent is not intended for when you are simply on a steep descent on a normal piece of roadway. It is intended for when your eyeballs pop out on their stalks and your passenger screams. In which case, you should be going appropriately slowly to begin with. (see point 1, above). Rule of Thumb: Hill Descent only works in first gear. 

(it usually works in other gears as well but only try that out on someone else's motorhome. Someone you don't like and probably won't meet again.)

I only wrote this because Woody has stolen my dog and wants cash for its return. Kev has been no help whatsoever (I didn't want to bother him) and BurtSner is too busy using a toothbrush that he bought probably from Waitrose specifically for the purpose of cleaning the rear flanges of his Blackbird. Which he is doing right now. And he probably bought the expensive one, as well.


Oh, and bear in mind 'chassis flex'.


(that ought to get a reply...)



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Pudsey Bear

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Reply with quote  #7 
Bugger it all to hell you beat me to it loops, are you spying on me again.
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Kev [comp] 

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Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

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tugboat

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Reply with quote  #8 
Where did Loops come from? Someone said he was buried in rubble somewhere in France.
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Clunegapyears

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Reply with quote  #9 
Burried under rubble? Must’ve used ‘Slow Ascent’ to get out of it.
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BurtSner

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Reply with quote  #10 
Once again we’re treated to the most eloquent and explanatory answer to a simple question from our missing link, oops sorry, our missing Loop.

It must be he’s dragged his way from under the rubble of a collapsed terrorcotter roof in the centre of a blistering French village. Rumour has it the locals have asked him to help develop a v8 powered Citroen Renault And Peugeot (shortened naturally to CRAP) mobile egg frying machine that they can release on the world,


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Exeter, East Devon

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SANDBAGSID

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Reply with quote  #11 
What an edefecated chap loop is, great to see ya taking time off ya renovation to give us the benefit of your knowledge on matters of such importance on how to get down a steep hill wiffout killing oneself . Now take care of yaself and don’t go falling of that roof neil.👍
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GMJ

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Reply with quote  #12 
Thanks Loop

I'll probably be using engine braking and judicious use of the brakes tbh.

Graham

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Pudsey Bear

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Reply with quote  #13 
I tend to do the same G, I decide what the safe speed for us is stick it in a low gear and gradually let it build up to it, then apply the brakes, similar on steep hills, I decide what speed I'm going not the traffic behind, but I do try not to hold folk up, I also pull over on roads not suitable for us to go fast.
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Kev [comp] 

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If you're not the lead dog, your view never changes.

Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

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2002 Bessacarr E745 Ducato
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GMJ

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Reply with quote  #14 
Spot on Kev - that's exactly how I do it

Graham

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SANDBAGSID

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Reply with quote  #15 
That’s what I do to pitty some bloody tractor 🚜 drivers don’t I followed one for six miles on the A39 me and about fourty other poor sods.🤬
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Gerty

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Reply with quote  #16 
I have never seen a hill decent knob in my Navajo, but I don't think I´ll be going anywhere to worry about not having one. [biggrin]

Hi Loop [wave]

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loopwithers

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Reply with quote  #17 
Tugboat and Clunegapyears got it right. 

Please do not be alarmed by the following picture because I am now 100% well and I suffered no lasting injury.

IMG_2053.jpg

I got knocked out by falling masonry. A sort of 'Darwin Award' situation where I demolished a section of wall using a sledge hammer while I was standing beneath it. On the positive side, I regained consciousness about 15 minutes later to find that I had achieved the exact results I was hoping for but had no memory of doing the work required to get them.


Kerchingggg…! Tugboat wins the MHO Award for Extremely Accurate Guesswork! It was my own fault and I have leaned from my mistake.

Thank you to all at MHO for being lovely people and a special 'sorry' to Woody because this is the second time I have libelled her and I also owe her a fried egg. And more thanks to Kev and BurtSer as well for keeping an eye out for me. I really appreciate it.

Yes, GMJ, engine braking and stomping hard on the brakes is all you should usually need but it is handy to know you have extra back-up if you need it. I will dig out a picture to show you how tough these Ducato/Citroen/Peugeot frames really are. I'll post it on this thread if I still have it. 

Hello, Gertie!

Best wishes and greetings also to everyone here, 

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Gerty

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Reply with quote  #18 
Has the hair grown back yet? [whistling-smiley-emoticon]
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tugboat

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Reply with quote  #19 
Who said Loops is a scabby old ...............?[biggrin]

Seriously though, I'm glad you're OK Loops. That could have been nasty, you being on your own.

There was a rumour the other day that when Hans comes home from hospital, we're all going to pile across the Channel to visit him and call by to do some labouring for you.

We all like fried egg butties, fortunately for you, so the catering should be simple.[big-thumbs-up-smiley-emoticon]

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Geoff.
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SANDBAGSID

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Reply with quote  #20 
Well were was ya hard hat and I bet ya didn’t have steel toecap boots 🥾 on tut tut elf and safty will be watching ya. Glad you’re ok though just stand on top of the wall next time like paddy does. 😂.
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Pudsey Bear

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Reply with quote  #21 
Phew, lucky it was only yer loaf taking the damage and nothing vital.

[cooking-eggs]

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Kev [comp] 

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If you're not the lead dog, your view never changes.

Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

Link to self build pictures 


http://tinyurl.com/nzyry9n

2002 Bessacarr E745 Ducato
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BurtSner

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Reply with quote  #22 
If everything goes reasonably to plan then I’m hoping to be within reach of yon Loopy in a couple of weeks or so. I’ll give him some of my DIY tips, the most important is to get someone else to do it for you.
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1999 Suzuki Hayabusa
2000 Honda Blackbird
Molly - Chocolate Labrador 
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Exeter, East Devon

Simon
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