Tilt angles and side slopes

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Tilt angles and side slopes

Postby silverbullet » 02 Jul 2019, 06:44

Worth repeating once in a while, especially after SP.
Note that this experiment was conducted with a static van, in a dry carpark, on level ground. Not on wet muddy grass, while traversing an undulating hillside.
The Westy was also lifted on the lighter side to represent worst case, but without luggage or passengers or kit on the roof, which also reduce the margin of safety.
GW suggest that anything more than 20 degrees side slope is inadvisable.
https://www.gowesty.com/tech-article-details.php?id=32

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Re: Tilt angles and side slopes

Postby 937carrera » 02 Jul 2019, 07:32

I found out a few years ago what sort of angles the old Routemasters were tested to, and a picture or video always helps. These were done with sandbags to simulate upped deck passengers, but none on the bottom floor. Not so applicable to our "buses".

Image credit to https://rarehistoricalphotos.com/double-decker-buses-tilt-testing-1933/

Classic Pathe video https://www.youtube.com/watch?v=42f3Cn6XlSk

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Re: Tilt angles and side slopes

Postby silverbullet » 02 Jul 2019, 08:41

27° side slope, 35° body roll...

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Re: Tilt angles and side slopes

Postby silverbullet » 02 Jul 2019, 08:45

A tin top van or truck should be good for a steeper angle than a Westy or hitop, assuming no roofrack load.
I have searched for official VW data, there might be something in vw-pix.org if they have some original press release documents?

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Re: Tilt angles and side slopes

Postby 937carrera » 02 Jul 2019, 08:55

The minimum standard is 28 degrees on the tilt bed, still the same today for IVA approvals.

The video has it at 34 degrees, and they apparently can go further than that. I was slightly concerned by the load on the two wheels and associated suspension components on the fork lift truck test
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Re: Tilt angles and side slopes

Postby bat » 02 Jul 2019, 09:26

What a strange coincidence I was wondering this morning if I could make something like the tilt bed using steel beams from my local scrappy.
Basically, to make welding under the van easier but I did think it could be used as a maximum tilt gauge as well.
Another welding project for me to practice on. :D I will have to ask how much they want for the metal required (if they have it) next time I am there.

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Re: Tilt angles and side slopes

Postby silverbullet » 02 Jul 2019, 11:05

Needless to say, inclinometers are just another irritating worry gauge (unless you dont know where the safe limits actually lie)
I would be interested to see what the Llanfyllin site reveals though, also the steepness of the slopes we climb and descend.
The syncro is supposed to be rated at 50% climb gradient max for the 16" versions I think?

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Re: Tilt angles and side slopes

Postby clift_d » 02 Jul 2019, 13:46

937carrera wrote:Classic Pathe video https://www.youtube.com/watch?v=42f3Cn6XlSk


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Re: Tilt angles and side slopes

Postby Jim San » 02 Jul 2019, 15:31

silverbullet wrote:inclinometers are just another irritating worry gauge
I would be interested to see what the Llanfyllin site reveals though, also the steepness of the slopes we climb and descend.



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Re: Tilt angles and side slopes

Postby bigbadbob76 » 04 Jul 2019, 09:22

937carrera wrote: I was slightly concerned by the load on the two wheels and associated suspension components on the fork lift truck test


I'd be VERY concerned. :shock:
That test loads the wheels and suspension arms etc in a way that would never happen on an incline.
Having bent a live axle on a jeep while off-roading on an incline, it's something I'm very aware of.
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Re: Tilt angles and side slopes

Postby silverbullet » 04 Jul 2019, 12:14

Potentially bent suspension aside, it does demonstrate the "potential" extreme limit of balance for a Westy syncro (albeit unladen)
Food for thought.

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Re: Tilt angles and side slopes

Postby silverbullet » 04 Jul 2019, 18:12

Lev-o-gauge (sic) make a range of heel-angle type gauges, the +/- 30° Model 8 would seem to be the most appropriate for syncro usage (rather than the +/-45° version)
If the roller hits the end, its then time to be very careful!

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