ratchet strap failure, whilst rigging

[sam walton]

where can i buy the truck straps from?

[bill]

haha, yeah i found out the scary way. i dont reckon you can get a sling tight enough to stop the kapstan sliding up the tree. I'l try get some pictures of the snapped strap and the kapstan i used. I think the eges of it could be too sharp and may needed a little more grinding or sanding.

 

if its a take down cut some small grooves/gobs into truck and tighten the sling into them. ive never had one slip out.

[DrewB]

[quote name=kipperfeet;

 

What was the rating on the strap. More impotantly are you ok?

 

We have been dicking round with a rigging weight tester (can't rmember the name' date='

 

![/quote]

 

Dynanometer bro.. trying to get hold of one here to do some shock testing of splices and diff knots..

[Mesterh]

Looks like I'm going to have to buy a whoopie sling for my portawrap.

What is the tail bit for though?

 

Anyone?

 

If I buy a large whoopie sling how would I shorten it to be tight up against the tree?

 

All this new technology has me baffled

[skyhuck]

I think some people are taking about "bollards" which have to be "strapped" tight to the tree, while others are taking about portaraps/flying capstan that can be fixed with a sling.

[DrewB]

Anyone?

 

If I buy a large whoopie sling how would I shorten it to be tight up against the tree?

 

All this new technology has me baffled

 

attach the portawrap to the small eye. Pull the tail to adjust the size of the whoopie sling.hope that helps.

[Tom D]

I looked at a new ratchet strap in a shop today, the label said breaking strain 5000Kg and also "not for lifting". So to do things right stey should'nt really be used at all. Having said that before I bought the Hobbs, ie a few weeks ago I used the setup pictured below.

 

I think that a bollard which has teeth or is cut in is probably ok as the straps are only pulling the bollard into the stem. A flying capstan however would put a lateral load on the strap and therefore is probably not a good idea.

[Mesterh]

I looked at a new ratchet strap in a shop today, the label said breaking strain 5000Kg and also "not for lifting". So to do things right stey should'nt really be used at all. Having said that before I bought the Hobbs, ie a few weeks ago I used the setup pictured below.

 

I think that a bollard which has teeth or is cut in is probably ok as the straps are only pulling the bollard into the stem. A flying capstan however would put a lateral load on the strap and therefore is probably not a good idea.

 

I'd say that the bollard would cut into that top strap. Looks like a sharp 90% edge on that steel.

 

DrewB cheers for the info, think I'll buy one and have a mess about

1 last thing though do you just tuck the tail under the rope a few times like a timber hitch?

[Peter]

No need, the "chinese finger trap" does it all.

[Mesterh]

No need, the "chinese finger trap" does it all.

 

Ah ha cheers