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Old 23 June 2007, 17:34   #1
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Trailer Advice

Hi,

Just been tinkering with my Ribcraft 5.3 / Dixon Bates Rapide R2B49/RC trailer combination to try and get the nose weight down a bit (thanks to Kev who helped me with this depsite the pouring rain). Whe I got the boat I could barely lift the tow hitch and estimated it was well in excess of 100KG.

The boat was already positioned quite far back on the trailer and I didn't want to move it back any more so had to move the axle forward by about 1 foot so it's now butted up against the the middle swing bar. Noseweight is now hovering around 70KG and with some careful storage of geat etc I should be able to keep it below that!

So my questions:

(1) Does anyone know if there are any legal requirements for the position of the axle in relation to the trailer length etc? Obviously as the axle is moved forward, the rear end swing-out will increase.

(2) In terms of trailer stability, will moving the axle forwards have compromised the handling of the trailer significantly? Specifically the tendancy to snake.

Thanks
Al.
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Old 23 June 2007, 18:19   #2
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What are you towing with? Some Land Rovers can handle 150kg nose weight!!!
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Old 23 June 2007, 18:23   #3
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Vectra. Max hitch weight is 75KG.
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Old 24 June 2007, 04:30   #4
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Try Polwarts calculation

There was a formula posted a while back try here;

Polwart's Calc

You'll need to measure the current noseweight and lengths then substitute in the required nose weight
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Old 24 June 2007, 04:38   #5
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al40

As long as the trailer is the correct size for the boat (i.e. stern not hanging way off the end) and your nose and axle weights are within the spec of your trailer tyres, plated axle weight and your vehicle nose weight then you have fulifilled the legal side of things.

The rear will swing out out a little further but should still follow the towing vehicle (almost) Snaking isnt as common with boat trailers as it is with caravans and very tall trailers.
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Old 24 June 2007, 07:41   #6
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Al,

I have a 5.85 setup and have noticed that the nose weight is horrendous.

I'm going to get my trailer man look at but its been recently serviced and wasn't commented on.

It does mean the trailer won't tip up with the boat on whilst I'm walking round in it and it rides well on the back of my car. My car can handle a nose weight of 112 KG.

NR.
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Old 24 June 2007, 07:56   #7
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My Dixon-Bate's got a fairly high nose weight too. I wonder if they set the axle up for the right nose weight when empty?
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Old 24 June 2007, 09:52   #8
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not sure if this is any help ,but as long as i can get over a ton and get the trailer to slide out out around roundabouts then i know its set up nicely!!
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Old 24 June 2007, 12:06   #9
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Thanks for the replies.

It does seem that the axle is quite far back on Dixon Bates trailers by default. It may be they are supplied to Ribcraft ready rigged in anticipation of the top spec boats (ie max weight motor off the back) - I got mine bare with no engine and hate to think what the nose weight was then! Would have though Ribcraft would balance them a bit more to individual boat config tho!

The boat fits perfectly on the trailer with the rear rollers just ahead of the transom so I guess it's OK.

I did notice how sensitive the nose weight was to loading. Even removing the anchor from the locker had a profound effect. Given the fuel tank is quite far forward, I expect fuel loading will also make a huge difference! Ordered a proper nose weight measuring thingy and also a 25l container I can fill with water to balance things out a bit if necessary!

Cheers,
Al.
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Old 24 June 2007, 15:45   #10
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Set up of trailer

Hi
All the trailers are set up for each rig taking in engine, A frame, console config,
As you had a non engine package from us we could not set the trailer for you.

The axle can be moved to adjust the nose weight,however this is done by our factory trained engineers and we would suggest you seek advice from a NTTA registered trailer engineer as moving the axle involves re setting up the brake cable which if done badly could be dangerous for you and 3rd party!!

Dixon Bate have a technical engineer and don't be afraid to call upon his help if required.
Regards
Dorian
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