Outer Limits 4x4 Board

toaddog wrote:The kit arrived the other week.

Will make a couple of minor changes like sleeving the holes in the support brackets.

Waiting for time off work to get into it and get it done.

Sorry to hijack.. make sure you post up pics as you go along.

Good luck!

shakes wrote:

Shadow wrote:

shakes wrote:

chimpboy wrote:

Shadow wrote:Worst case if the cable breaks its going to slam back down on the trailer frame, possibly damaging it, but i doubt anyone would be injured.

This is the thing that I think would be a bit unacceptable without a safety feature. But thinking about it, I don't think it would be too hard to come up with something.

Going on a slight oh+s rant here... The best question (but slightly re-wroded)I've ever been asked is "If that come's down, would you be happy to be underneath it?"

so apply that to the situation where ANY crane, hoist, or winch is used.

I believe in good OH&S, but there is such a thing as going too far with it.


There is no reason a visual inspection of the winch and cable would not be perfectly adequate.

Accidents happen... Proved time and time again, a good well engineerd safety latch $300 being really generous.

Your nephew never being able to use his hand again because you turned your back for 2 minutes and it came crashing down... priceless.

I know I'm over exaggerating and stealing barnsey's clown hat but is it worth the risk? I'll ask again would you be happy to have your hand in there if it came crashing down?

It wont come crashing down if the winch and cable/rope is in good order, so your being pedantic for the sake of it, or so someone in the world thinks your cool?

I am saying it a little just for arguments sake, and I am over exaggerating it.

But for something that can be built in so easily, vs the potential damage it could cause why would you not be pedantic?

It will also keep alot of stress off the cable as stuff is crashing down off the tray, makin the winching system last that little bit longer too...

isnt there a tipper trailer for sale at the second hand car yard in town.a trailer would be a better investment as you could hire it out

The safety thing is probably up to each owner I guess.

Me, I just bought a tipper ute! It's a 1992 Navara, frankly a bit of a shiatbox, but the owner before the last one was a local council so the tipper part of it is pretty solid... dual rams.

I wasn't looking for a tipper but it was a cheap ute which is what I was looking for; the tipper aspect is a bonus.

What would be the failure modes for something like this? Being hydraulic, would it crash down in the event of say a hose bursting, or would it have warning signs?

My kit actually has a burst valve built in.

I suppose in your case if it burst while it was on its way up it just would pump the oil out all over the place. If it burst while up it would come down at the speed of the oil getting displaced by the pistons moving and would depend on the leak and the weight on it.

You got safety chocks etc?

defmec wrote:isnt there a tipper trailer for sale at the second hand car yard in town.a trailer would be a better investment as you could hire it out

Which yard?

toaddog wrote:My kit actually has a burst valve built in.

I suppose in your case if it burst while it was on its way up it just would pump the oil out all over the place. If it burst while up it would come down at the speed of the oil getting displaced by the pistons moving and would depend on the leak and the weight on it.

You got safety chocks etc?

I got nuttin'!

For all I know it may have a burst valve in it... as it was a council vehicle I would think they'd have gone for the safe version. Might have to take some pics of the hydraulic set up because I wouldn't know what a burst valve even looks like.

As I said in the skip post I made one out of 2 rollers a boat winch and plasma rope.





Cheap and works twice a week for about 6 years so far - apart from a recent upgrade to the winch another roller to reduce load on winch.

chimpboy wrote:

toaddog wrote:My kit actually has a burst valve built in.

I suppose in your case if it burst while it was on its way up it just would pump the oil out all over the place. If it burst while up it would come down at the speed of the oil getting displaced by the pistons moving and would depend on the leak and the weight on it.

You got safety chocks etc?

I got nuttin'!

For all I know it may have a burst valve in it... as it was a council vehicle I would think they'd have gone for the safe version. Might have to take some pics of the hydraulic set up because I wouldn't know what a burst valve even looks like.

Look for a hex or square fitting around 2-3" long at the base of the cylinder/s, looks like an inline check valve in most cases. If you don't have them, they are realativly cheap tp buy.

Another good safety feature is to build a swing up prop into the subframe. If its handy, there is a much better chance of it being used. Should be manditory on all tippers IMHO.

i build tipper ute backs for a living there is nothing to them just a sub frame which attaches to your mounts. than tray sits on that with the pivot at end of chassis so when you tip the tray doesn't hit i use a 12v power pack can pick them up from most hydraulic suppliers with a ram much stronger than what is needed so will always do the job be looking couple of grand for parts

The only problem we came across is that due to the sub fuel tank being so high we needed to pack up the crossmembers to clear the top of that tank.

The tray is now about 5 inches higher than it was.

Will look at addressing that by getting a lower tank and then removing the packers.

have tried it with a decent load yet.

Full extension



More mods next weekend to bring the height of it all down to closer to what it used to be.