Ball nuts sheared off

[roseyweb]

Well bolts, had this happen today, the bolt sheared right off and left only one. luckily I wasn't going far and not tearing down a bouncy country lane. Was towing 3 tonnes worth of digger and trailer.

Does anyone think that having the drop plate on the lowest setting could be a contributing factor?

[roseyweb]

[aspenarb]

The drop plate/hitch needs more support at the bottom.

 

Bob

[richy_B]

The further down the greater leverage so makes sense it contributed. How much would be6hard to know. Lucky escape really because your break away cable is attached to the part that would have snapped off. A 3 tonner on a plant trailer would have made a mess at 20mph+

[richy_B]

The drop plate/hitch needs more support at the bottom.

 

Bob

Another 2 bolts at the top may have helped as well.

[roseyweb]

Yer my thought was it was a leverage issue. Not sure how to combat that short of welding the whole back plate on.

I've always been a advocate to the lads of putting breakaway cable on to a Independent point on the vehicle.

I should listen to my own advise

[cornish wood burner]

High tensile bolts take an incredible load, before they let go. What grade bolt? I don't see any washer or lock nut

Edited July 21, 2016 by cornish wood burner

[aspenarb]

Yer my thought was it was a leverage issue. Not sure how to combat that short of welding the whole back plate on.

I've always been a advocate to the lads of putting breakaway cable on to a Independent point on the vehicle.

I should listen to my own advise

 

A simple plate with some gussets ( we like gussets ) like the one Mick Dundee repaired on Al`s 18 tonner will do the job.

 

Bob

 

 

[roseyweb]

8.8 tensile nuts,

I never even knew that that's what the number ment, time to visit the fabricator

[Unstumpable]

I have a similar set up on my landy but it has supports from the bottom back to the chassis to spread the load. 5mm angle iron