Tree Trunk Protector

[Cuppa]

When I bought a Tree trunk protector & an equaliser strap they were both the same.

http://4x4direc.myob.net/gallery/STR...r-strap/233856

Cuppa

[Winnie]

Beauty, I have two front recovery points, why not use both? Now I don't need to buy two straps.

[rottodiver]

When you use an equaliser make sure you use a shackle as the "runner" and not just loop it through the end of the strap, the heat caused by the friction can melt either strap while under load.

Scotty

[BigRAWesty]

Why not TD the loop in the end of the strap is plenty big enough for the tree trunk protector to fit through.
This equalizer is a new fad must have gizmo being marketed. Why not use a tree trunk protector if you have one and multi task an item, equals carrying less gear IMO

When you use an equaliser make sure you use a shackle as the "runner" and not just loop it through the end of the strap, the heat caused by the friction can melt either strap while under load.

Scotty

Was just about to make this point.. friction is a huge killer of poly straps.

Also imo if using a bridle strap you would want it at least 6m long. If using a 3m strap they would near be pulling in a 90 degree angle (45 a side from the car) which basically slashes the straps weight capability by around 30% from memory.
To keep your straps capacity at its best you need as straight as possible.. so if you can use a 6m strap your angle would be greatly reduced and capacity increased..

Kallen Westbrook
Owner of
Westy's Accessories

[BigRAWesty]

Just to follow, I know this is lifting, but the principle applies..
Any questions ask... Photo from the new nobels app..


Kallen Westbrook
Owner of
Westy's Accessories

[rottodiver]

Was just about to make this point.. friction is a huge killer of poly straps.

Also imo if using a bridle strap you would want it at least 6m long. If using a 3m strap they would near be pulling in a 90 degree angle (45 a side from the car) which basically slashes the straps weight capability by around 30% from memory.
To keep your straps capacity at its best you need as straight as possible.. so if you can use a 6m strap your angle would be greatly reduced and capacity increased..

Kallen Westbrook
Owner of
Westy's Accessories

Sort of correct,
If you have a a 1 tonne strap ( just an example) and using it as a bridle and you wrapped in around something round that it the same diameter as the distance between your two tow point and connected your snatch strap to that large diameter object( ie a massive sheave block) you would double the capacity of the strap to two tonne, now obviously that would not happen as you would be connecting it to a shackle so this creates an "angle factor". This is the angle created at the shackle so there are 4 rules associated with this and they are , if the angle is 120 degrees the angle factor is 1 which means the 1 tonnes sling is good for 1 tonne, the second is 90 degrees and the angle factor is 1.41 so you bridle is good for 1.41 tonne, the 3rd is 60 degrees with an angle factor of 1.73 so now the bridle is good for 1.73 tonne, and finally 30 degrees with an angle factor of 1.93 so the bridle is good for 1.93 tonne.

Hope this makes sense and it goes for all winching lifting etc

Scotty

[rottodiver]

Just a note... There is a formula for all angles to get angle factors but the 4 are most commonly used and generally round up to the bigger angle.

Scotty

[rottodiver]

Oh and while I am at it for those that struggle with angles, if all sides of a triangle are the same you have 60 degrees ie 2 m between tow points and a 4 meter bridle will give you the 60 degrees..

Scotty

[04OFF]

Oh and while I am at it for those that struggle with angles, if all sides of a triangle are the same you have 60 degrees ie 2 m between tow points and a 4 meter bridle will give you the 60 degrees..

Scotty

So if someone had two recovery points , one on each chassis rail at the front of a Patrol, and the distance between the chassis rails on a Patrol is approx 900mm, a 3M strap across the 2 points, would be all the length you need to get the right angle/s then ?

[rottodiver]

So if someone had two recovery points , one on each chassis rail at the front of a Patrol, and the distance between the chassis rails on a Patrol is approx 900mm, a 3M strap across the 2 points, would be all the length you need to get the right angle/s then ?

Correct... If 900 then 1800 would give you 60 degrees.... 60 degrees is optimum for the sling but I assume the longer the better to minimise the side load on the tow points.

Scotty