No8 trigger problem sorted!

[30Three]

I finally got some time to look at the No8 trigger; which had a very poor second stage pull off.
Thanks to Mr Laidler for his advice and a copy of the No8 manual.
I stripped out the system completely to remove the setting screw; which was seized in the trigger. Penetrating fluid had not made any real progress, so I had to heat the trigger (gently) with a small blow-torch to release it. It came out easily after it freed off with a bit of heat.
No damage to the screw or slot.
Attachment 71403

With the system stripped down it's easier to understand the function. So I have now got the 1st stage set at 3lbs pull with a nice crisp 2nd stage at 4 1/2lbs. It feels so much better!
Prior to this repair the trigger would need a vague 1/8" extra pull to release.

Information

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[Peter Laidler]

I think that your 2nd pull is too light for safety. The minimum pull-off weight for a 2 stage trigger is 5lbs

[30Three]

OK Peter, I'll have another look at that and re-check the weight.

Thanks.

[Peter Laidler]

There were three things that totally confused me as an apprentice Armourer. The first was the No8 trigger mechanism which I eventually learned parrot fashion to pass the theory exams and must have bamboozled my way through the practical side of things. I did have to learn it eventually and now feel fine.

The second was the 3.5" rocket launcher trigger charging and release mechanism. It was usually a sealed unit in real life but as apprentices we had to learn to strip the internal electrical charge and discharge gubbins then reassemble it from a box of bits. Not just YOUR bits of course...... It was the whole class's worth of bits. Assemble it and set the 3m-amp output with a tester thinggy

The third bit I didn't really understand was the rest of the 3 year course stuff!

[30Three]

I'm sure the modern stuff is just as complicated as new cars. It's continuous learning on the job. Keeps it interesting; but can be frustrating at times. It took a long time for me to be comfortable with electrical diagnostic's; a DB5 wiring diagram is one A4 page of info; a DB9 wiring diagram is over 50 pages of A4!

[Peter Laidler]

You're right........ How difficult can they make it. My 1969 Mini Cooper S wiring diagram is one colour coded page with an indexed identifier. Plus the fact that all of the (Lucas) parts were easily repairable as strippable units and can be tested with an old avometer. My 2000 Rover Cooper electrical circuit diagram is absolutely HUGE!!!!! Same as the 750 Commando. Simplicity itself

[muffett.2008]

The third bit I didn't really understand was the rest of the 3 year course stuff!

If your time in OZ boozers is any indication of your apprentice years, you probably floated right past most of it

[gsimmons]

But, according to Peter he spent his time at the NAAFI drinking tea and eating ice cream.

[Bindi2]

But, according to Peter he spent his time at the NAAFI drinking tea and eating ice cream.

Yeah right just like pink pigs fly by every arvo about 6.30pm

[Son]

Yeah right just like pink pigs fly by every arvo about 6.30pm

remember mate, without pics it never happened!