Page 3 of 3 FirstFirst 123
Results 21 to 23 of 23

Thread: Tow ball questions??

  1. #21
    Join Date
    Jul 2006
    Location
    East-South-East Girt-By-Sea
    Posts
    17,665
    Total Downloaded
    1.20 MB
    Quote Originally Posted by DiscoKym View Post
    Quote Originally Posted by JDNSW View Post
    From Series 3 Owners manual (1978) but probably much the same for all Series:-

    Cross country 1020kg
    Road & track unbraked 500kg
    Override brakes 2040kg
    Four wheels and independent power brakes
    Petrol 4080kg
    Diesel 3060kg

    Towbars did not require marking with rating (or anything else) before about 1990.

    John
    I notice in my Disco 2 Owner's Manual it says 1000kg off road. I see it is a rating used and recognised since the 1970's... I have started reading the same in camper trailer magazines so it looks like the non Land Rover set is realising this some 40 years after Land Rover.

    Found a few Camper Trailer salesmen don't like you calling their off road camper trailers dirt road because they weight too much...
    Quote Originally Posted by Rover Co. Ltd. Part No.4852
    Owners Maintenance Manual, September 1966, re-issued August 1967.
    Page 118 - General Data
    Maximum drawbar pull:
    Engine | Regular | reg StnWgn | Long W/B | Long StnWgn | 110 F/C | 110F/C 6 cyl
    Petrol. | 1,800 kg | 1,800 kg | 1,600 kg | 1,600 kg | 1,800 kg | 1,973 kg
    Diesel | 1,497 kg | 1,497 kg | 1,315 kg | 1,315 kg | 1,800 kg | n/a
    Interesting that there are such vast differences in John's SIII books.

    Now that raises the question: Does drawbar pull equate to a maximum trailer mass (ATM)? Or: Does it equate to the maximum effort that can be applied to the tow coupling? i.e. the tractive effort required to move the trailer (irrespective of the unsprung mass).

    In relation to the comment about being further reduced, if for example a rated tow ball is fitted then irrespective of the specifications of the vehicle or the rest of the hitch the max trailer will be reduced to the max of the ball. e.g. 1 7/8" balls are rated as low as 2000lbs (907 kg)

    Addit: Just found this, likely the same as the originals.
    Last edited by Lotz-A-Landies; 19th August 2014 at 11:30 AM. Reason: addit: dataplate.

    You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.

  2. #22
    Join Date
    Sep 2007
    Location
    Kiwiland
    Posts
    7,246
    Total Downloaded
    0
    Quote Originally Posted by Lotz-A-Landies View Post
    Now that raises the question: Does drawbar pull equate to a maximum trailer mass? Or: Does it equate to the maximum effort that can be applied to the tow coupling? i.e. the tractive effort required to move the trailer (irrespective of the unsprung mass).
    For heavy trucks tow bars are rated under braking of 1G with the trailed load acting forwards and downwards at a 20 degree angle.
    There are limits on material stress in that situation.

    The forces you can put on a towbar when the tow vehicle just hit something is far in excess of any pulling force you can apply. The major safety concern is to keep the tow vehicle and trailer attached in that worst-case situation.

  3. #23
    DiscoMick Guest
    Yeah, a beautiful vehicle, but I don't think I fall into their target market, somehow.

Page 3 of 3 FirstFirst 123

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!