Member Since: 17 Dec 2013
Location: Chichester
Posts: 179
750kg or half the towing vehicle kerb weight (whichever is the smaller) is UK limit for unbraked...Discovery 4 Landmark ‘16
Discovery 4 SDV6 HSE '65 - crank snapped
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24th Apr 2017 1:54 pm
Sydney
Member Since: 11 Aug 2013
Location: St Neots
Posts: 903
If your trailer is un-braked, the maximum you may tow (combined weight of trailer and load) is 750 kg or half the kerbside weight of the towing vehicle, whichever is the lower.De-Tango
V8 Brakes
EGRs blanked
Running boards
3 flash indicators and clock on dash
Blingy grille...
ISTR 450k is well over the legal limit for an unbraked trailer and if there was an incident you could find yourself with further problems.
Sorry but I cant see that this is correct the trailer was built and plated by a reputable company and on the plate it stated max gross weight 750K and is an unbraked trailer so the total of 450K which included the weight of the trailer is well within the trailers max weightRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
24th Apr 2017 2:07 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I know we are adding guesstimates so none of this is precise, but roughly 300kg in the vehicle and 450kg for the trailer makes a reasonable load. Although it is comparing apples with pears you would struggle to put a similar weight inside the vehicle and remain below the maximum vehicle mass.
Brake fade at these weights is part of the D3 experience. Indeed, one good hard 70 to 20 mph braking effort quickly followed by a 70 to 0mph can bring tears to your eyes. Thankfully JLR made a massive change with the D4 braking system and is probably what they should have had on the D3 from the beginning.
Repeated low speed, downhill and high mass braking events can be considerably worse than the motorway example. The brakes still do a lot of work but receive less airflow and the brakes end up slightly hotter each and every braking cycle until the inevitable point where they cannot turn kinetic energy into heat at any appreciable rate.
Your caution with your family aboard has paid dividends as everyone is ok and the vehicle is fine. Your next move for the family is V8 brakes.
Land Rover - Turning Drivers into Mechanics Since 1948
Just a quick update I bled all the brakes using about 2l new fluid the could of the old started at orange then run clear quite quickly just done a 100mile round trip and the brakes are so much better but as I use the trailer in north Wales a lot a v8 brake upgrade is in the pipeline thanks again for all the repliesRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
24th Apr 2017 8:06 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8205
furnitureman wrote:
M3DPO wrote:
ISTR 450k is well over the legal limit for an unbraked trailer and if there was an incident you could find yourself with further problems.
Sorry but I cant see that this is correct the trailer was built and plated by a reputable company and on the plate it stated max gross weight 750K and is an unbraked trailer so the total of 450K which included the weight of the trailer is well within the trailers max weight
I stand to be corrected I have a lightweight camping type trailer that is unbraked and will only carry 200k, I was told when I bought it that it was the maximum legal size without brakes.It can when others can't,
It will when others won't,
It goes where others don't.
not to worry M3DPO I have found life is one big learning curve and this forum is always helping when it comes to learning new things that are connected to the D3 etcRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
24th Apr 2017 9:17 pm
MGCarr
Member Since: 15 Jul 2014
Location: Lancashire
Posts: 703
furnitureman wrote:
One last thing I have both a preasurised brake bleading sytem and an iid tool which would be best as I will be doing it on my own
A soft brake pedal is not pad fade, that leaves the pedal hard but the pads lose their friction due to excessive heat, what yours sounds like is water contamination of your brake fluid, when this gets hot the water boils and the resulting steam can be compressed just like air in the fluid can, it is this that gives the soft pedal.
Use your pressure bleeder and plenty of new fluid from a sealed can, start with caliper farthest away from the reservoir and hold the bleed nipple open long enough to see new fluid coming out, then repeat on each nipple in turn working your way to the brake nearest the reservoir. This ensures that you get as much water out as possible.
Remember brake fluid is hygroscopic and absorbs water into itself over time.
1997 Defender 90 for the kids and I to have a go at some competitive off road RTV and Tyro trials, daughter picked up her first trophy over the August Bank Holiday.
Previous Land Rover history
1996 P38 4.6 V8 Autobiography
1996 Discovery TDi 300
1972 Range Rover 3.5 V8
LWB Hard Top Series 3
LWB Truck Cab Series 2A
Not been without a Land Rover for over 40 years - I must need therapy!
25th Apr 2017 1:22 am
MGCarr
Member Since: 15 Jul 2014
Location: Lancashire
Posts: 703
Oops too slow typing the above, glad you sorted it
1997 Defender 90 for the kids and I to have a go at some competitive off road RTV and Tyro trials, daughter picked up her first trophy over the August Bank Holiday.
Previous Land Rover history
1996 P38 4.6 V8 Autobiography
1996 Discovery TDi 300
1972 Range Rover 3.5 V8
LWB Hard Top Series 3
LWB Truck Cab Series 2A
Not been without a Land Rover for over 40 years - I must need therapy!
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
I have a lightweight camping type trailer that is unbraked and will only carry 200k, I was told when I bought it that it was the maximum legal size without brakes.
