LittleSister
Well-Known Member
Weren't we advised by various revolutionaries to throw off our shackles? 
Where our shackles come from!
- Thread starter Wansworth
- Start date
Boathook
Well-Known Member
If Wansey starts to sell shackles we know where they have come from.
If @Poignard starts to sell shackles did he get them from @Wansworth ?
If @Poignard starts to sell shackles did he get them from @Wansworth ?
mjcoon
Well-Known Member
Or were those shekels?Weren't we advised by various revolutionaries to throw off our shackles?
Neeves
Well-Known Member
Many of us totally ignored the advice and got married - and found that being shackled to your wife (or husband) had distinct advantages.Weren't we advised by various revolutionaries to throw off our shackles?
Jonathan.
Neeves
Well-Known Member
And, historically, was not conducted by some shackle makers themselves.
I've related the experience previously.
I tested shackle to destruction. The commonly fail at the 'eye' where the thread portion of the pin is part outside the eye. This seems logical the thread 'thins' the pin so where the pins is not fully housed the diameter of the pin is less, due to the thread.
I found that CMPs Black Pin Titan shackles did not meet specification. The supplier of the shackle determines what specification they are going to meet.
To cut a long story short. CMP rebadged their shackles as meeting a 2 (short) ton specification not the Grade B 2 metric ton specification. The difference on the shackle is that the WLL is embossed 2t, for imperial and 2T for metric. They sold, sell, their Black pin shackles, marked WLL 2t in a metric market, the UK, Europe, Australia. They updated the specification on their website. So CMP website was accurate, the 2t was correct. Its quite legal for them to sell imperially marked shackles in a metric market. Buyer beware.
Hands up anyone who noticed, hands up anyone who notices their shackles are embossed 2t not 2T and know what the difference between the 't' or 'T' means.
I will not endorse CMPs Black pin shackles. there is plenty of choice, Crosby et al. Either CMP knew their shackles did not meet the metric specification (and thought they would get away with it) OR they never tested the shackles in the first place (and relied on a nefarious test by another party). If either of these options has a basis of accuracy - what other products that CMP market enjoy the same processes?
As previously mentioned - I tested their chain, it met specification. I tested their yellow pin shackles (3/8th" shackle WLL 1T) - they met specification. But I will not endorse CMP product - there is plenty of choice from other suppliers. Maybe I'm unkind and my emotive standards are unrealistic. Their Titan Black Pin shackles do meet the 2t, 4,000lbs, specification but are (were) not Grade B WLL 2T, 2000kg, shackles.
How can I be persuaded to amend my ideas -
Giver me a credit note to source 10 shackles, 3/8th" Titan Black pin, at random from Australian chandlers, pay for the 10 shackles to be tested, under my watchful eyes, by a NATA test facility. I'll publish the results here along with the receipts for purchase and certificates from the test facility.
Jonathan
Sumara of Weymouth
Well-Known Member
Hi Jonathan,
I am finding your post a little bit confusing, maybe things are different in Australia. Please say if you think I am wrong but my understanding of the correct marking for lifting equipment including shackles is as follows:
A metric tonne (always spelt tonne and never ton) is 1,000 kg and always has the abbreviation of a lower case t (Never upper case) This is according to International SI units and as listed in the Lifting Equipment Engineers Association Code of Practice for the safe use of lifting equipment Edition 9.
A UK Imperial ton (spelt ton) often called a long ton is approximately 1,016 kg and has the abbreviation of an upper case T. This is according to the Lifting Equipment Engineers Association Code of Practice for the safe use of lifting equipment Edition 9.
Confusion often arises because the Americans use a short ton measurement of approximately 907 kg which should be abbreviated to tn or st.
The majority of readers of this forum are probably from the UK and probably using metric weights so if they want to lift a weight not exceeding 1,000 kg they should use a shackle marked WLL 1 t. If they want to lift a weight not exceeding an imperial ton they would need to choose a shackle marked WLL 1 T.
In your post you mention "metric ton" (rather than metric tonne) and also "" WLL 2T, 2000kg" (rather than WLL 2 t, 2000 kg) which both seem to be a bit of a mix of terminology and may confuse UK readers.
Neeves
Well-Known Member
Of course UK readers would be confused, I accept the criticism.
If I pick up a shackle in a chandler marked WLL 1T or 1t in the UK or Australia I'd assume it had a WLL of 1,000kg. Both the UK and Australia have adopted metric measures and 'imperial' measures are not used. But the CMP 3/8th" Black pin shackles do meet the WLL spec of 4,000 lbs did not meet the specification of 2,000kg and were badged 2T. It is clear on the CMP website that the specification is 1816kg
CMP is a Canadian company and to allow them to name their shackles Titan have stated they do not address the lifting market. The Name Titan is already registered in Australia and many SE Asian countries for lifting equipment (so any lifting equipment requirements are not necessary).
Jonathan
Sumara of Weymouth
Well-Known Member
Gosh it is a minefield out there. Luckily there is no way a CMP Titan shackle would be able to be used for lifting in the UK or Europe because they are not stamped with the CE mark and trace code and therefore couldn't be issued with the correct certificate. However, I can see the confusion with other makes of "Titan" shackles which are marked for the lifting industry. I suppose to be safe and if you are working near to margins, you should ask for Report of Thorough Examination or a Declaration of Conformity and in the UK buy from a LEEA accredited lifting company to be on the safe side.
newtothis
Well-Known Member
Point of order: a metric ton is a tonne. A metric tonne is a tautology. Both weigh 1,000 kg.
dgadee
Well-Known Member
Forged, no children working. Machines clean and well painted (mostly). Not so bad depending on purpose.
I note the absence of cutting fluid. Too expensive?
Me, I buy Wichard.
I note the absence of cutting fluid. Too expensive?
Me, I buy Wichard.
Romeo
Well-Known Member
Did you miss the guy with the wetted hessian sack over his crotch?
ducked
Well-Known Member
Plenty more fish (as in guy with wetted hessian sack over his crotch) in the sea.
