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General Chat About Electrics, And Ignition Systems.

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unstable load
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Post by unstable load »

In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.


Cheers,
John
DaveEFI
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Post by DaveEFI »

unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
Not quite sure how you'd 'calibrate' a crimper. The jaws simply meet at full travel on the sort I'm talking about. I also have a wire stripper with fixed cable sizes which covers all the common car ones with no chance of conductor damage. If used correctly.
Dave
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kiwicar
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Post by kiwicar »

unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
yup same for military spec wiring.
best regards
Mike
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stevieturbo
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Post by stevieturbo »

DaveEFI wrote:
unstable load wrote:In the Civil aviation world crimping tools and even strippers are subject to scheduled calibration to ensure they crimp correctly and the strippers don't over-cut the wire beyond the insulation.
The same applies to torque wrenches and any measuring instrument, ie pressure guages, AVO meters, cable tensiometers, micrometers, verniers, you name it.
Not quite sure how you'd 'calibrate' a crimper. The jaws simply meet at full travel on the sort I'm talking about. I also have a wire stripper with fixed cable sizes which covers all the common car ones with no chance of conductor damage. If used correctly.
Maybe measure actual crimp force ? or more importantly, test the crimp it has just made ?

This type of tool covers a lot of common crimps and wont break the bank.

http://www.ebay.co.uk/itm/Crimping-Hand ... 3389d8c5e2

Although quality does vary. I bought one cheap set off a seller ages ago and the tool was very good quality.
A few days later I bought a similar product from another seller, with a case etc. It was cheaper though. The dies were nowhere near the same quality as the first tool I bought

Even still, for all it cost it was still worth it ( too damn lazy to change the dies lol )
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unstable load
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Post by unstable load »

Basically, the tool has different removable heads for the different sized and configured pins and each head is crimped on a set number of pins and they are tested for conformity with published specifications.

It makes tooling up for a company hugely expensive because they effectively need 2 of each special tool to cover for calibration and some of the stuff like pitot-static testers or altimeter transponder testers can run into tens of thousands of dollars depending on complexity. Then, factor in the costs of shipping the stuff around the countryside and the setting up of a laboratory or paying someone else to do it and the costs quickly add up.
Cheers,
John
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