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post #1 of 7 (permalink) Old 17-03-2019, 19:26 Thread Starter
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Fiat Ducato Sundance/mobility scooter/towbar

We Have a Fiat Ducato Sundance 590RL 2.8d `Y` reg.
We bought our motorhomealmost 2 years ago and the tow bar to my knowledge has been on the vehicle forsome years prior. I want to fit a small manufactured platform which will carry adequately amobility scooter for my wife which weighs just 86k. The platform can carry 145k.The tow bar which has no plate on it that I can see runs under the vehicle120-140cm is an `H` frame double bolted & welded to the underside. Even the tow ball plate is welded, I am ableto carry max 3400k & after the weight calculations I have 680k spare thatwith habitational weights deducted as well. The supplier says I need to checkthe `ball` weight before commencing which is impossible to check. Im inclinedto think the tow bar is fully adequate. Has anybody any thoughts or suggestionsplease the platform weighs 7k. I have uploaded a couple photos which may help.
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post #2 of 7 (permalink) Old 17-03-2019, 20:28
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hi and welcome

to be honest the tow bracket looks home made to me which was allowed in the old days

a few more detailed pictures would be nice so we can see a little more detail

from what i see the ball plate looks like 6mm plate and this would not be strong enough to take the flexing that around 100kg will give especially with a big overhang

dont ask me how i know

i would atleast like to know how thick the box section is and how thick the ball plate is also is the ball plate just butted upto the box section and welded both sides

let us know

barry
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post #3 of 7 (permalink) Old 20-03-2019, 09:57
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I agree Barry, it looks amateurish on the welding, and the grinding leaves a lot to be desired too.
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post #4 of 7 (permalink) Old 20-03-2019, 10:07
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morning kev

yes its a pity the original poster has not replied

i am sure with a little work it could be strengthened up

i had a similar requirement as the OP and found that the tow bracket that i had made was strong enough but the dave cooper bike rack was not

over a lot of use with constant flexing, the welds on the bike rack pulled apart

a while ago i looked at some bike racks that clamped on the tow ball

they were alright but i just was not happy with it

so that is why i made a new one here in portugal

barry
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Last edited by powerplus; 20-03-2019 at 10:10.
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post #5 of 7 (permalink) Old 20-03-2019, 18:43
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No one has yet mentioned the possible overloading of the rear axlles Permitted weight due to the leverage effect caused by the distance between the axle and tow-bar. Plus the tow bar is clearly a home made job and therefore itís structural strength and integrity is totally unknown. (Thatís why all tow bars now must have type approval);

I wouldnít risk it, the consequences of the towbar failing on a busy motorway and the scooter dropping onto the road at 60mph in front of following traffic doesnít bear thinking about.

Andy

Its not the destination that matters.

It's who you share the journey with (even if like me, itís in a caravan!)
I am very fortunate to have Mrs Plodd to share mine with
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post #6 of 7 (permalink) Old 20-03-2019, 18:55
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hi andy

the op says after calculations he has plenty of weight left

and i did say that i had concerns about what looks like a home made bracket

in my opinion its fine having a home made bracket if it is strong enough

this is why i ended up making my own bike frame as i just did not like the flimsy stuff that is about

i do agree with what you say and you are right about the loading and i hate to think what load would be on the bracket when it goes over some bumps

this is why i asked for some information on the materials used and as i said it did not look strong enough to me



barry
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post #7 of 7 (permalink) Old 20-03-2019, 19:00
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Originally Posted by powerplus View Post
hi andy

the op says after calculations he has plenty of weight left

and i did say that i had concerns about what looks like a home made bracket

in my opinion its fine having a home made bracket if it is strong enough

this is why i ended up making my own bike frame as i just did not like the flimsy stuff that is about

i do agree with what you say and you are right about the loading and i hate to think what load would be on the bracket when it goes over some bumps

this is why i asked for some information on the materials used and as i said it did not look strong enough to me



barry

680k spare tends to suggests thatís total payload allowance, no mention of axle loading. Once you start moving rearwards from the back axle the leverage effect of any extra weight adds weight to the rear axle VERY quickly (and disproportionately)

Andy

Still wouldnít risk that loading on a towbar I knew nothing about, far too risky.

Its not the destination that matters.

It's who you share the journey with (even if like me, itís in a caravan!)
I am very fortunate to have Mrs Plodd to share mine with
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