Reply
 
Thread Tools Search this Thread
 
Old 03 January 2005, 09:16   #1
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
4 x 4 Towing warning

Having just spent a heck of a lot of money returning my Rib to the water after a trailer accident and consoling myself that things could have been an awful lot worse I realize that I've done nothing to prevent it happening to anyone else, so here goes.
In October 2003 I travelled from home in Cornwall to Hayling Island and the Hamble to go Rib shopping, I had the absolute pleasure of meeting 2 Ribnetter's namely Searider & Eddo, and having been treated to 2 fantastic sea trials purchased Eddo's Ribtec 535. 15 miles west along the M27 and needing a fuel stop I managed to get lost and had to negotiate a U turn to get back on track, the road was quite bumpy and was governed by a 30 limit, bear in mind I'm towing my new toy and am in unfamiliar surroundings so when I say I was driving carefully I really was!
Over the brow of a hill, downhill toward the roundabout just getting onto the brakes and 'it' happened, bad vibration, sparks in rear nearside mirror, more braking ,nearly stopped- Bang- boat disappears from rear view mirror, re appears on nearside of Land Rover, comes to rest on the grass verge but no longer sitting on the trailer.... Oh S**t.... The trailer had collided with a lampost just before coming to rest and that had 'launched' the boat over the front, flattening the winch post in the process. The trailer was written off, the boat had a large slit in its offside tube courtesy of the Land Rovers side and I'm still 170 miles from home wondering what the hell to do next. Re enter Eddo into the picture, full of advice, sympathy and suggestions and via a local recovery garage we start to get things sorted.
So what happened? This is how we see it, the Land Rover is fitted with a Dixon Bate tow assembly, a quality piece of kit but on this occasion let down by the tow ball itself. It would seem that the bumpy road caused the tow ball and pin to jump out of its holders releasing my Rib onto the unsuspecting public. Either the gold passavate retaining pin that is supposed to stop this happening sheared from the gentle bouncing (it was gentle bouncing) or the pin was never in place, I remember putting it there the day before and Eddo, myself and son attached the Rib to the Land Rover, checked it and checked it again, I find it hard to believe that not one of us noticed the pin was missing. Attached are 2 pic's, the first being the assembly as was (minus retaining pin) the second is my current assembly with 2 large retaining nuts and a pin as well. I would highly recommend anyone with a similar adjustable hitch to obtain the later, as I said at the outset this could have been much worse, this happening at speed just doesn't bear thinking about.
Anyway 'Blister' is now back on the water and yes I've heard every joke about popping a Blister there is!
One final point, just after the accident there was debris all over the road including a 4' X 18" piece of fibre glass, I knew or at least thought I knew it was a part of my Ribs hull, convinced I'd written the Rib off I was to say the least relieved when Eddo was able to point out it was the cover off the top of the lampost!!
Anyway Happy ribbing in 2005 and safe towing.
Kernow
Attached Thumbnails
Click image for larger version

Name:	hitch old.JPG
Views:	361
Size:	83.0 KB
ID:	9865   Click image for larger version

Name:	hitch new.JPG
Views:	358
Size:	80.2 KB
ID:	9866  
__________________

__________________
Kernow Buoy is offline   Reply With Quote
Old 03 January 2005, 10:10   #2
Member
 
Country: UK - England
Make: extreme 24
Length: 7m +
Engine: merc 6.2 320hp
Join Date: Jul 2004
Posts: 709
i find no matter what tow bar i have i always chain the trailer from the a frame to the bars on the tow bar,just to be on the safe side. i would hate to be in a situation like kernow its bad enough losing a wheel let alone your pride and joy
__________________

__________________
Carl is offline   Reply With Quote
Old 03 January 2005, 13:28   #3
Member
 
Richard B's Avatar
 
Country: UK - England
Town: Devon
Boat name: White Ice
Make: Ranieri
Length: 5m +
Engine: Suzuki 115hp
Join Date: Jul 2002
Posts: 5,015
Kernow,

I'm going to give you a suggestion - get rid of that towball immediately.

The design of it is flawed - before you added the double locknuts, it relied on a single lynchpin to retain the ball and pin assembly. As you found, it can easily become removed (simply catching clothing or footwear could have easily sprung it off). Now you've rectified that, but the whole assembly still relies on a single R-clip to retain the assembly on the vertical steel risers. If that R-clip is removed, the pin would inevitably vibrate out and you could be in the same situation again.

I was concerned when I looked at your photographs, as my neighbour uses a universal coupling to tow plant to site for his business, so I went to have a look at his coupling (also made by Dixon Bate) and it's completely different - the ball is cast as part of the coupling, and the pin is located behind the ball, completely independently, like this: http://www.dixonbate.co.uk/html/universal_coupling.htm

Did you have a breakaway device of any type fitted?
If your trailer is unbraked, then you should have a substantial cable (similar to CPL101 from TrailerTek) from the trailer chassis linked to a secure fitting on your towbar structure. If this had been correctly fitted, it would have prevented most of the damage sustained in the accident. TrailerTek catalogue: http://www.trailertek.com/trailer-parts-catalogue.pdf

If your trailer is braked, then you should have a breakaway cable fitted which actuates the trailer handbrake in case of the trailer being detached from the vehicle. It's common practice to put this breakaway cable over the towball to reduce the curvature as it's designed to break after actuating. In this case, the breakaway cable wouldn't have been effective once the towball became detached form the vehicle. So an additional cable or chain like Carly suggests may have some value, as long as it's looser than the breakaway cable to allow handbrake operation. This chain would also stop reverse breakaway incidents which have occured on slipways. See the post by Jackwabbit on this thread: A warning to all
Richard B is offline   Reply With Quote
Old 03 January 2005, 14:09   #4
Member
 
Country: UK - England
Town: london
Boat name: Frances May
Make: vailant DR450
Length: 4m +
Engine: mercury 50 hp
Join Date: Sep 2003
Posts: 761
Send a message via Yahoo to Daniel TD5
kernow

i would all so strap the boat to the trailer lot of ways of doing this
but i should think its commen practise to do so this would prevent the boat from leaveing the trailer in all accidents

all the other rib net member ive met and my rib is straped at the rear and at the winch not just by the winch itself by a strap by other means

all so get rid of that tow bar kit as richard b say it got to many thing that can still go wrong

sorry to hear what happen

dan
__________________
GET A RIB GET A LIFE
Daniel TD5 is offline   Reply With Quote
Old 03 January 2005, 14:09   #5
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
Hi Richard
Thanks for the input, yes I take your point about the R clip on the horizontal retaining bar, admitedly it does need a tap with a hammer to fit it but then again once bitten etc. A longer bar with locking nut and pin would seem to be the answer and you may like to suggest that to your friend who does the plant towing. If you look on your link to the Dixon Bate site under towing you'll see they still supply the exact same type with just the R clip as the retainer.
The trailer was a braked one with a brakeaway cable fitted, I attached it to the lowest towing bracket bar and yes it did break having applied the brakes, sadly for me a few more feet and I'd have stopped reasonably uneventfully (with steady hands just like Ozzy Osbourne!) Unfortunately the lampost caught the trailer nearside wheel and away it all went. I just wonder how many people are using these hitches exactly as I was.
Kernow
__________________
Kernow Buoy is offline   Reply With Quote
Old 03 January 2005, 14:10   #6
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
But you've still got a similar situation on the cross pin. Stick a big high tensile bolt through there. Use a thick washer and a nylok nut to terminate it.

When using these type of spring retaining pins, be sure to fit a washer between the retaining pin and the bracket.


Edit: I see I'm too slow!
__________________
JW.
jwalker is offline   Reply With Quote
Old 03 January 2005, 14:17   #7
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
Hi Dan, thanks for that, I had the winch strap, a backup from the towing eye to the trailer to stop bounce and 2 ratchet straps across the tubes, they all snapped but remember the trailer stopped dead from about 20 /25 mph and although the boat is reasonably light I guess some 600 kgs plus takes some stopping.
Kernow
PS the landy is a V8 !
__________________
Kernow Buoy is offline   Reply With Quote
Old 03 January 2005, 14:20   #8
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Quote:
Originally Posted by Richard B
...an additional cable or chain like Carly suggests may have some value, as long as it's looser than the breakaway cable to allow handbrake operation.
This is not allowed. If the trailer is attached to the vehicle by additional means the restraint must be capable of preventing the towing coupling and/or trailer from contacting the ground. So a long chain or cable is out.
__________________
JW.
jwalker is offline   Reply With Quote
Old 03 January 2005, 14:33   #9
Member
 
Country: UK - England
Town: london
Boat name: Frances May
Make: vailant DR450
Length: 4m +
Engine: mercury 50 hp
Join Date: Sep 2003
Posts: 761
Send a message via Yahoo to Daniel TD5
Quote:
Originally Posted by Kernow
Hi Dan, thanks for that, I had the winch strap, a backup from the towing eye to the trailer to stop bounce and 2 ratchet straps across the tubes, they all snapped but remember the trailer stopped dead from about 20 /25 mph and although the boat is reasonably light I guess some 600 kgs plus takes some stopping.
Kernow
PS the landy is a V8 !
sound like the tow bar did it then with a lamp post for the last bit
i use the front and rear towing eyes with ratchet straps to the trailer as you
say my ones are only rated to 600kg so they do have limits

ps no td5 any more l200 warrior now no cold nights lying under it
putting bits back on that fell off

hope you have good fun now you are out on the water

just think about lying in the cold must go finnish removing the anti foul from the
rib
__________________
GET A RIB GET A LIFE
Daniel TD5 is offline   Reply With Quote
Old 03 January 2005, 14:47   #10
TIM
Member
 
Country: Ireland
Town: Dublin
Boat name: WIZARD
Make: REDBAY 7.4
Length: 7m +
Engine: OPTI 225
Join Date: Aug 2002
Posts: 417
I FULLY AGREE WITH RICHARDS COMMENTS ON THE HITCH .....

I would bin your hitch today, and pick up the suggested replacment... I know 2 people who have had similar experances with with the clip working loose and shering off . One guys compresser came loose , but he had it chained on, it hit the ground and made a mess of the coupling and brake/handbrake asembely... not to mention the gouge in the road. THE second guy had a 2 ton rock breaker on a trailer , and it came free, but the runaway brake kicked in and it stoped in the island of a dual carrageway , no one hurt or damage done.... he reversed up to the trailer hitched up again , put a bolt in, this time insted of a pin ... drove to his yard.. unbolted the hitch and f**ked away ........

99% of people dont need this type of combined hitch as they never tow plant or heavy trailers ... A simple ball hitch is the most reliable.
__________________

__________________
NOT THE SHARPEST KNIFE IN THE DRAWER
TIM is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 15:35.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.