Detached Rear Roll Bar (1 Viewer)

Jan 16, 2017
64
61
Solihull
Funster No
46,925
MH
Burstner 690G
Exp
Since 2015
My Burstner/Fiat Motorhome had its first MOT 20 Feb 2023 with 7800mls on the clock and failed due a Detached Roll Bar offside rear and the near side rear Roll Bar required attention by having it retightened.
The Manager at the garage believed this was due to weight that i had been carrying in the garage ie a motor bike 120kg however prior to going to France and Spain in May and June 2022 i had the Motorhome weighed and it was within its capacity.
Your comments are required ?
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
54,027
152,321
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
Depends what else is in your garage and the length of your overhang.
Don't really see it affecting the suspension our garage is rated at 350 kg. I could of had a 450 kg option which only involves chassis supports under the garage no suspension mods.
 
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Sep 17, 2017
5,595
10,462
Birmingham, UK
Funster No
50,575
MH
A-Class
Exp
2017
Additional weight won't directly affect the ARB as both sides will be pushed up equally so it should just rotate in it's bushings.

I guess if you had a lot of extra weight and cornered hard, it would add more torque to the ARB. Not sure how it would detach without breaking something. Unless it wasn't bolted up properly in the first place.
 
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Dec 24, 2014
9,314
48,058
Hurstpierpoint. Mid Sussex.
Funster No
34,553
MH
Compass Navigator
Exp
Ever since lighting was by Calor gas.
...........failed due a Detached Roll Bar ...........required attention by having it retightened.
:unsure:
There's a contradiction in that terminology. In my mind something being 'detached' refers to a situation where e.g. bolts are missing, and is quite different from something 'needing tightening'.
 
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Badknee

LIFE MEMBER
Aug 25, 2014
7,420
415,965
notloB
Funster No
33,046
MH
Vantage Neo
Exp
Living the dream.
failed due a Detached Roll Bar offside rear and the near side rear Roll Bar required attention by having it retightened.
Not sure what detached means (bracket broken?) Needed retightening? Perhaps it wasn’t fitted correctly to start with ??

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Feb 16, 2020
2,349
3,221
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
My Burstner/Fiat Motorhome had its first MOT 20 Feb 2023 with 7800mls on the clock and failed due a Detached Roll Bar offside rear and the near side rear Roll Bar required attention by having it retightened.
The Manager at the garage believed this was due to weight that i had been carrying in the garage ie a motor bike 120kg however prior to going to France and Spain in May and June 2022 i had the Motorhome weighed and it was within its capacity.
Your comments are required ?
It's possible to be within the weight limits of the van, but to overload the garage area. Do you know what the payload for the garage area is? It may surprise you as some are distinctly low, but not flagged up very prominently so by the manufacturer, like payloads in general!!
Mike.
 
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Jan 8, 2013
8,496
11,538
Dronfield - Derbyshire
Funster No
24,202
MH
Burstner Lyseo 690G
Exp
Happy FLT since 2011
My Burstner/Fiat Motorhome had its first MOT 20 Feb 2023 with 7800mls on the clock and failed due a Detached Roll Bar offside rear and the near side rear Roll Bar required attention by having it retightened.
Thanks for the heads up. I'll be checking my 690G at its first test in April. Mines done 24,000 miles
 
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Nov 13, 2011
1,486
3,544
Lincolnshire
Funster No
18,889
MH
PVC
Exp
30 years
I agree with above posts. For something to become detached the fastening would have to break or come undone. If either the link or bar was fractured, then I would expect the tester to refer to it as such.
Go back and ask exactly what he means by detached.

Geoff
 
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OP
OP
M
Jan 16, 2017
64
61
Solihull
Funster No
46,925
MH
Burstner 690G
Exp
Since 2015
It's possible to be within the weight limits of the van, but to overload the garage area. Do you know what the payload for the garage area is? It may surprise you as some are distinctly low, but not flagged up very prominently so by the manufacturer, like payloads in general!!
Mike.
Thanks Mike but Burstner Garage limits on weight carried in the Garage we are always well below their limits
 
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Feb 18, 2017
4,166
8,073
Greenwich, London, UK
Funster No
47,382
MH
Hymer MLT 570
Exp
1986
I'd recommend you get the van weighed when fully loaded.
Not just the overall weight, but also front and rear axle individual weights.

For every 1 kilo added behind the rear axle adds something like 2 kilos to the rear axle, and the further back it is the greater the weight (look up Fulcrum Effect)

You may be underweight overall, but with the bike onboard overweight on the rear axle.
 
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OP
OP
M
Jan 16, 2017
64
61
Solihull
Funster No
46,925
MH
Burstner 690G
Exp
Since 2015
Additional weight won't directly affect the ARB as both sides will be pushed up equally so it should just rotate in it's bushings.

I guess if you had a lot of extra weight and cornered hard, it would add more torque to the ARB. Not sure how it would detach without breaking something. Unless it wasn't bolted up properly in the first place.
Having thoughts on your comments because i have always had a BUMPING NOISE when pulling away and always believed that it was something within the Motorhome,would a detached ARB cause a BUMP???
 
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OP
OP
M
Jan 16, 2017
64
61
Solihull
Funster No
46,925
MH
Burstner 690G
Exp
Since 2015
I'd recommend you get the van weighed when fully loaded.
Not just the overall weight, but also front and rear axle individual weights.

For every 1 kilo added behind the rear axle adds something like 2 kilos to the rear axle, and the further back it is the greater the weight (look up Fulcrum Effect)

You may be underweight overall, but with the bike onboard overweight on the rear axle.
Thanks for your comments however have had done what you suggested with regards to the weighbridge and i am well within the weights
 
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pappajohn

LIFE MEMBER
Aug 26, 2007
43,419
50,142
Dark side of the moon
Funster No
172
Exp
Since 2005
They're getting fussy these days.
Back in the day I had a MK1 Escort which failed on the anti roll bar linkage.
Went home, took the lot off and went back.
Tester said if it ain't there I can't test it.....pass.
We didn't call the tester 'near enough' for nothing

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Oct 18, 2021
2,103
6,363
Mid Devon
Funster No
84,940
MH
Adria Compact SC
Exp
Camping since 1954, MoHo 2022
Don't know if they've changed over the years but they used to be a ball inside a rubber filled cup.
No lube, just dry rubber.

That’s basically what they are, with a bolt that mates with the anti roll bar and the other end to the axle. The other point of attachment for the ARB is a couple of rubber lined saddle clamps to the chassis or bodywork, so with the lack of further information it could be either that’s detached.
 
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