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Towing a caravan

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john
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Towing a caravan

Postby john » 21 Mar 2012 20:32

ok i'm toying with this idea of towing a caravan to the various events around the country

thinking about an elldis with a Max MTPLM

1050kgs / 20.62cwt

do i need to uprate the springs dampers etc

[8 whole cylinders worth of punch to ram the world through the windshield and out the rear view mirror. Car & Driver]
1981 Grinnall TR7 v8
1981 Black FHC
1979 & 1980 Black Premium FHC(laid to rest) Sorry :-(
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John

Shauniedawn
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Postby Shauniedawn » 21 Mar 2012 21:46

Brakes would be first on my list!

But by the time you fill it with all your gear it will be well and truely too heavy. I wouldn't use it to pull / stop that kind of weight. It's fine whilst everything is going okay, but the slightest bit of draft / blowout / emergency avoidance / braking situation etc and your life is at risk.

My vote is for a proper tow car. Take a tent!

Shaun

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Hasbeen
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Postby Hasbeen » 21 Mar 2012 23:34

John, since fitting a tow bar to my stock 7, I have done a bit of towing of my 2 horse float. This is a twin axle, light float, weighing only 600Kg. However, as a horse float it does get heavier when loaded.

With one small horse it is about 900Kg, & puts just over 80 Kg on the tow ball, & the car behaves beautifully.

With a large horse I have something over a ton, with 90Kg on the tow ball, & it is quite OK. I would not like to put more than this on the tow ball, without fitting stiffer springs all round. If I wanted to use the thing for 2 large horses, behind the 7, I would move the front axle forward, to give 80Kg draw bar weight.

I do find all the talk of poor brakes interesting. I have never exceeded the capacity of the standard brakes, ever. I have of course never competed my stock 7. A few racing laps of Bathurst may find then a bit short.

I did once get them hot enough to smoke slightly, & even then there was no fade or other problems, & I had to drive like a prat to do it.

I was small minded enough to get annoyed at a bloke who was following me far too closely on a fast, good country road. When I slowed to encourage him to pass he wouldn't. Finally I led him, quite quickly, into a steep 4Km long twisty decent, with many hair pins. He disappeared very quickly, but with my blood up, I did my Fangio impression most of the way down.

When I stopped for a coffee at the bottom, there was just a wisp of smoke from the pads.

I will also mention that I towed a 1.4 Ton enclosed trailer, with first my Lotus 20, then my Brabham in it, for thousands of miles, on 1960s roads, with a 1966 1600cc Hillman Minx. It was lighter than a 7, with much less brake capacity, 4" wheels, with skinny cross ply tyres.

This was actually safer at speeds up to about 70 MPH than the V8 Pontiac & Chrysler I tried later.

I'd say, drive quietly & sensibly, & the 7 is an excellent tow car. Expect a lot of smiling people, & quite a few giving you the "thumbs up" as you pass.

Hasbeen

john 215
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Postby john 215 » 22 Mar 2012 04:49

Hi John,

Alan in the TRDC, ' Laney ' on here tow's a caravan with his TR7 V8.
As seen last year at Billing -

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Cheers John

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Odd
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Postby Odd » 22 Mar 2012 05:35

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by john</i>

ok i'm toying with this idea of towing a caravan to the various events around the country.
Do i need to uprate the springs dampers etc <hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote"> The only thing I did was uprate the swept volume of the engine...
A 3.9 efi pulls loads better than a 3.5 efi you know. [:D]

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Beans
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Postby Beans » 22 Mar 2012 07:33

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Shauniedawn</i>

Brakes would be first on my list! ... <hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
And on mine too [:p]

As for the caravan, the handbook that came with my TR7 states that,
in case of a braked trailer, the maximum trailer weight is 1016 kg
(equivalent to 2240 lbs).

But check your towbar first, there are some that allow no more than 750 kg towing weight.
And some can take a little more ...


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Odd
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Postby Odd » 22 Mar 2012 08:44

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Beans</i>

... the handbook that came with my <b>TR7</b> states that, in case of a braked trailer,
the maximum trailer weight is <b>1016 kg</b> (equivalent to 2240 lbs). <hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote"> The handbook for my 1980 <b>TR8</b> states:
"Maximum braked trailer weight is <b>1270 kg</b> (2800 lbs)" and
"Gross train weight should not exceed 2808 kg (6191 lbs)" and
"Recommended static hitch load is 50 +- 5 kg (110 +-11 lbs)"

And for those (like me) who don't know what that very UK abbreviation is:
MPTLM = Maximum Permissible Total Laden Mass

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Last TR
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Postby Last TR » 24 Mar 2012 02:54

John,

Get a trailer with brakes, load the trailer for the proper tongue weight (use a scale,) and you should have no issues. I tow 3500 pounds behind my Jeep, which only weighs a few hundred pounds more than my TR8 (and certainly has less braking power than either of my Triumphs.)

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Ken
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1980 TR8, 1973 TR6, 1965 Volvo PV544, 1958 MGA, Jeep Cherokees

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