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  #625  
Old 02-22-2014, 01:11 AM
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Re: The Towing thread

oh i see....i'll check it out tomorrow.

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  #626  
Old 02-22-2014, 01:14 AM
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As a side note, the receiver adaptor on the Mopar system has maybe 2/3 the engaged length I am used to seeing on the Hayman Reece system as fitted to Mum's Taxi. This would also give rise to additional banging around from the Mopar system. Also, the interference bolt works better diagonally as it squeezes the receiver adaptor against two walls of the receiver rather than one.

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  #627  
Old 02-22-2014, 01:15 AM
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Re: The Towing thread

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Originally Posted by fireball View Post
hmmm with the amount of banging and clunking i swear i thought my car trailer was going to just disappear from my rear mirror ! i'll get around to climbing underneath the car one day to check all the bolts are still there, cos it sounded or felt like there was something loose ??

the banging and car jolting just doesnt seem normal
My van has around 240Kg on the ball (i use a WDH), and though there is occasional clunking (and quite loud), it only happens when the load changes and the receiver moves a bit.
Our previous Patrols towing the same van and same setup didn't transmit any noise at all.
I reckon it would be a good idea to first check the tow bar bolt tensions, but from your description it sounds to me like the tongue was moving lots in the receiver, as the trailer reacted to the road surface. My first thought is - too light on the ball.
Do you have any idea of the ball weight of the car trailer? - as you probably are aware this will change dramatically according to the location of the load over the trailer tandem axles.
You are right, banging and jolting isn't normal. Car trailers have a nasty habit of going pear shaped very quickly. Your setup was telling you something very important.
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  #628  
Old 02-22-2014, 01:26 AM
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Yeah didn't someone check their dealer fitted bar and all the bolts spun easily?

I retensioned my towbar bolts after breaking for lunch, and they'd all relaxed quite a bit. Sometimes I regret the effort in doing things myself, but I really like knowing that the work was done by someone who gives a shit!

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  #629  
Old 02-22-2014, 01:33 AM
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Re: The Towing thread

sorry dont know the ball load of the car trailer off the top of my head. trailer only weighs 650kg and was clunking already before i put a car on the trailer.

yeah it seems to make sense that it sounds like my tongue is loose in the receiver. i'll check the bolt if i get time tomorrow.

now you got me worried about the loose bolts from the dealer
only had it fitted about 2 wks ago
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  #630  
Old 02-22-2014, 01:36 AM
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Re: The Towing thread

You may find that you don't have the bolt! On one car I had a branded Hayman Reece bar, and on another (same model) car it had a Ford factory bar, which looked exactly like the Hayman Reece one, but without the bolt!
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  #631  
Old 02-22-2014, 01:49 AM
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Quote:
Originally Posted by fireball View Post

now you got me worried about the loose bolts from the dealer
only had it fitted about 2 wks ago
Check the receiver adaptor interference bolt before giving yourself a headache over something you probably don't need to

Also, an unladen trailer is often the noisiest, followed by a badly laden one.

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  #632  
Old 02-22-2014, 02:06 AM
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[QUOTE="Butts_Oz;980108"]I think Barboots is referring to the bolt underneath the hitch receiver. I had to tighten mine up to reduce any rattles in the receiver.[/QUOTE

As I have noted before, the interference bolt goes through the wall of the receiver socket. I found it needs to be very tight and locked . Getting it tight partly stripped the thread. We therefore had an extra nut welded on to increase the amount of tension I could get on the lock nut otherwise the bolt worked loose with the bouncing.
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  #633  
Old 02-22-2014, 02:14 AM
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Re: The Towing thread

I have always been led to believe that the bolt should only be used to hold the towbar tongue tight when not towing anything, to prevent it rattling around inside the receiver, and to remove it when towing as the ball weight on the bar should be more than enough to stop it moving.

Having said that, my bolt has stripped the thread and I haven't bothered getting another one, as it doesn't rattle anyway (unless my music is too loud for me to hear it.........that's a possibility)
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  #634  
Old 02-22-2014, 03:13 AM
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Re: The Towing thread

Quote:
Originally Posted by fireball View Post
sorry dont know the ball load of the car trailer off the top of my head. trailer only weighs 650kg and was clunking already before i put a car on the trailer.

yeah it seems to make sense that it sounds like my tongue is loose in the receiver. i'll check the bolt if i get time tomorrow.
Lots of car trailers I've had anything to do with were very light (or had no weight) on the ball when empty. Some actually sat level on the tandem wheels unloaded.
That makes them buggers to tow when empty, they rattle and bang and little you can do about it. Because they are relatively light they don't have a lot of potential nastiness when empty.
When loaded though the centre of the mass must be slightly forward of the axles centre to get at least 10% of the total load on the ball.
Get the load position wrong and it is a recipe for an unplanned event, and an unhappy result.
I would always rather too heavy on the ball than too light - but without compromising steering or braking of the towing vehicle.
You do know that Jeep say the WK2 requires a weight distribution hitch to be used when towing an ATM above 2268KG……..that means if your trailer weighs 650kg you only have 1600kg of load potential - thats only a pretty small car on the trailer bed.
My thoughts on the receiver bolt are the same as Matty's above. I've taken mine out.
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  #635  
Old 02-22-2014, 03:48 AM
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Re: The Towing thread

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Originally Posted by fireball View Post
?? excuse my ignorance but what's a interference bolt ?
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  #636  
Old 02-22-2014, 04:12 AM
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Re: The Towing thread

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