new bollard/winch for rigging?

[StevenIbelings]

i think the key crab has a MBS of 7Kn...

 

yeah 700kg SWL and 7000kg MBS, so there is a SF of 10.

the mbs is for the bollard, 1000kg is the max dead lift load on the winch.

So far i dont have any time frame for the ce.

There are no other ce rated winches on the market so far.(accepted the FTC one)

Edited June 20, 2011 by StevenIbelings

[Tony Croft aka hamadryad]

1 N is the force of Earth's gravity on a mass of about 102 g = (1⁄9.81 kg) (such as a small apple).

On Earth's surface, a mass of 1 kg exerts a force of approximately 9.8 N [down] (or 1.0 kilogram-force; 1 kgf=9.80665 N by definition). The approximation of 1 kg corresponding to 10 N (1 decanewton or daN) is sometimes used as a rule of thumb in everyday life and in engineering.

The force of Earth's gravity on a human being with a mass of 70 kg is approximately 686 N.

The dot product of force and distance is mechanical work. Thus, in SI units, a force of 1 N exerted over a distance of 1 m is 1 N·m of work. The Work-Energy Theorem states that the work done on a body is equal to the change in energy of the body. 1 N·m = 1 J (joule), the SI unit of energy.

It is common to see forces expressed in kilonewtons or kN, where 1 kN = 1,000 N.

[Old Mill Tree Care]

Yeah I know that Rupe I was joking. Sorry but I can't put the smiley faces and all those other faces because I'm using an iPad.

 

I'm interested in this thread though. As you know I'm on the brink of getting a GRCS but I'm now panicking about buying one and then finding out the Ibelings is better (and cheaper).

I can't wait for ages for the CE rating to come through so may end up having to get the GRCS but there are quite a few features of the Ibelings that I think are preferable.

 

What do you think? I realise you have a GRCS so what's your interest here and what are your thoughts Rupe?

[Rupe]

no, 7 Kn is usual for rating a side loaded aluminium crab, 7 KN is bugger all

 

Yes but as breaking strain not SWL. Yes I agree its bugger all, but on a alluminium karabiner the MBS would be, say 24kn and the side loading and/or with gate open would be 7kn. Giving SWL's of 240kgs and 70kgs respectivley.

 

 

The winch has a SWL of 7kn not an MBS. Totally different thing.

[Old Mill Tree Care]

Flippin' 'eck Hama! You need to get out more often!!

I'd put a laughing face on here, if I could.

[Rupe]

1 N is the force of Earth's gravity on a mass of about 102 g = (1⁄9.81 kg) (such as a small apple).

On Earth's surface, a mass of 1 kg exerts a force of approximately 9.8 N [down] (or 1.0 kilogram-force; 1 kgf=9.80665 N by definition). The approximation of 1 kg corresponding to 10 N (1 decanewton or daN) is sometimes used as a rule of thumb in everyday life and in engineering.

The force of Earth's gravity on a human being with a mass of 70 kg is approximately 686 N.

The dot product of force and distance is mechanical work. Thus, in SI units, a force of 1 N exerted over a distance of 1 m is 1 N·m of work. The Work-Energy Theorem states that the work done on a body is equal to the change in energy of the body. 1 N·m = 1 J (joule), the SI unit of energy.

It is common to see forces expressed in kilonewtons or kN, where 1 kN = 1,000 N.

 

Very good, but you need to know your SWL from your MBS!!

 

Karabiner dont show SWL as that is up to the end user to decide what safety factor is in place.

[Tony Croft aka hamadryad]

Very good, but you need to know your SWL from your MBS!!

 

Karabiner dont show SWL as that is up to the end user to decide what safety factor is in place.

 

breaking load is irelevent , we have to work to safe loads, and i wanna rig loads in excesse of 7kn! snatch a half tone lump of beech on a block say

[StevenIbelings]

MBS is 70 kN ;-)

we just say use good SF is your systems you to give a start SF 10.

is you want to use a lower SF thats up to you.

MBS is 70 kN ;-)

@oldmilltree: grcs isnt ce either

[John Shutler]

Flippin' 'eck Hama! You need to get out more often!!

I'd put a laughing face on here, if I could.

 

or continue cutting and pasting from wikipedia

[Old Mill Tree Care]

Thanks Steven. I assumed GRCS would be CE rated I'm surprised. Please PM me details of exact purchase price plus how do I get one from you.

Thank you.