added to favorites will read when i can,my opinion is wheel balance is a lot to blame.i have seen what an unbalanced wheel can do on the machine in the garage.
I'd like to agree because then I would be happy that with a simple remedy it won't happen again.
However I had two new tyres fitted at the end of last year and both wheels were balanced.
Thanks Blackrat for your reply.One theory that I have is as previously stated it is nearly always the nearside wheel that this problem rears it's head with.Of the two wheels when travelling one set of bolts,the offside,are trying to tighten up and the other side,the nearside,are trying to undo.With a car you have acceleration forces and braking forces so it is a status quo with the bolts but with a caravan you only get braking forces so with the bolts being right hand thread the nearside are always trying to undo.With steel wheels the actual shape of the hole and with steel having a bit of'give' it acts like a spring washer so holding the bolt tension but alloy wheels have no give-hence the higher torque setting-and so once they loose their tension will tend to try and undo.Any other thoughts on this are greatly accepted.Thanks again Rob.
Discounted Insurance Quotes for UKCampsite.co.uk visitors! Up to 12.5% off!
If the wheel is the correct one for the unit, and if it is located properly, and if all nuts are correctly torqued, I would find it impossible to believe that 4/5 nuts would come loose (unaided). I stress unaided. As for whose fault is it? You could spend many shekels on pursuing your claim, and end up with just a hole in your bank account. Fortunately, you got away with serious problems or injury. Like Big Al say, you must be aware. PS I have just re checked all my wheel nuts!
i had a meal out with an MOT inspector (now retired) last night and talked about this because they have just got a caravan.he said yes,and i quote,thats why commercials have the bolts on the near side with a lefthand thread.makes you think
------------- the only silly question is the one you do not ask.
but surely the same applies to the near side of a car as well? and who checks their car wheel bolts everytime they leave home? And ive never heard of a car wheel coming of, exept due to bad maintenance etc
Tim it is not the same with a car as a caravan as re my other posting there are no acceleration forces on a caravan hub and so it only wants to undo(the nearside)whereas a car has acceleration and deceleraton forces so cancelling each other out.
Michael, When I spoke to the caravan manufacturer they say that the axle manufacturer has gone into the left and right hand thread thing and they reckon that there is a reason that they do not do this but they did not go into why this was so.
Geeljay,Thanks for that.I think that the only safe way is if you have a caravan with alloy wheels,it does not seem to affect steel wheels as much,is to carry a torque wrench check the torque before every trip and again when you reach your destination.Again better safe than sorry but after an experience like we had,minor that it was,you do tend to worry is it going to happen again?
just a thought but would the fact that the weight of a caravan is similar to a car yet the car carries its weight on 4 wheels and the caravan on 2?
another thought is that as the caravan has one axle in the centre as it is towed there would be some side to side movement that you would not normaly get on a car with a wheel each corner, could this "walking" type movement possibly be responsible for loosening the wheelnuts?
Michael, When I spoke to the caravan manufacturer they say that the axle manufacturer has gone into the left and right hand thread thing and they reckon that there is a reason that they do not do this but they did not go into why this was so. hi robert,from your post there is another 3000 that would like an answer too.do you think they read this sites (UKCS) postings.lets hope so
------------- the only silly question is the one you do not ask.
Michael, When I spoke to the caravan manufacturer they say that the axle manufacturer has gone into the left and right hand thread thing and they reckon that there is a reason that they do not do this but they did not go into why this was so. hi robert,from your post there is another 3000 that would like an answer too.do you think they read this sites (UKCS) postings.lets hope so
I think its fair to say we would all like to know the answer Michael, I for one certainly would
how about using Locktite on the nuts/bolts, or would you get a false Torque reading using such a product?
i think the locktite would give a false reading because you would be fighting the glue as well as the torque.perhaps the above could be the answer along with a split pin,but then you would weaken the bolt by drilling a hole for the pin.when i made my own trailers this is how the wheels were held on,a large nut after the bearing with a pin to lock it.
------------- the only silly question is the one you do not ask.
Richard there could be something in what you say about the weight and the side to side movement.As like yourself we have a Compass but a Special edition version of the Omega 540 called a Liberte 18/4L and it comes in MTPLM at 1548kg which if fully loaded is quite a bit of weight on two wheels and with comming down that mountain pass(the Col du Mont Cenis between France and Italy, the Frejus tunnel was closed due to a fire about 6 months previous)the 'van even though we were taking it steady had lots of side to side movements.Food for thought.Thanks.
P.S. What do you think of Compass caravans?
Rob
Quote: Originally posted by Robert James Ta on 08/5/2006
Richard there could be something in what you say about the weight and the side to side movement.As like yourself we have a Compass but a Special edition version of the Omega 540 called a Liberte 18/4L and it comes in MTPLM at 1548kg which if fully loaded is quite a bit of weight on two wheels and with comming down that mountain pass(the Col du Mont Cenis between France and Italy, the Frejus tunnel was closed due to a fire about 6 months previous)the 'van even though we were taking it steady had lots of side to side movements.Food for thought.Thanks. P.S. What do you think of Compass caravans? Rob
I am biased maybe but think compass caravans are the bees knees!