Thread: The lightening project

Originally Posted by STC

Weakening of load bearing parts/section should not be done without proper assessment of a competent person.

End of story.

What determines a competent person? The people responsible for many more important things can become "competent" by barely skimming by or being around for a long time never furthering there learning. Technology and analytical technology has greatly increased but many refuse to learn. Absolutely an assessment should be made but if we refused to go past what the current practice we stop learning.

Originally Posted by robhughes-games

Agreed. They are there purely for a look to carry on the 'lines'. They offer no measurable weight reduction. I'll likley scrap them, purely because of controversy. Easy to delete of a cnc program.
Interms of weakening the action, sure it's removed material, 0.5mm to be precise. Is the action now unsafe, No

Agreed that it is unlikely to weaken the receiver enough to cause any issues, especially if it is a "lighter" calibre, since all tikka actions are essentially the same, which means they must have designed it to withstand the worst case. I would personally would still want to calculate the stresses in there. Then again since the 0.5 mm there save hardly any weight why bother, totally agreed!

Originally Posted by Stocky

What determines a competent person? The people responsible for many more important things can become "competent" by barely skimming by or being around for a long time never furthering there learning. Technology and analytical technology has greatly increased but many refuse to learn. Absolutely an assessment should be made but if we refused to go past what the current practice we stop learning.

In this particular instance I would say someone with a qualification in mechanical engineering and who is competent in the assessment of the strength of a machined metal part.

Originally Posted by STC

Agreed that it is unlikely to weaken the receiver enough to cause any issues, especially if it is a "lighter" calibre, since all tikka actions are essentially the same, which means they must have designed it to withstand the worst case. I would personally would still want to calculate the stresses in there. Then again since the 0.5 mm there save hardly any weight why bother, totally agreed!



In this particular instance I would say someone with a qualification in mechanical engineering and who is competent in the assessment of the strength of a machined metal part.

Having an Engineering Degree (not mechanical) I'd be hesitant of putting little to any salt in a "qualification" most learning occurs after the "qualification" and many people I've dealt with that i would say are competent have no official qualifications. I guess I have a problem with made up qualifications determining competency. You can pass a degree with a 50% average. Qualifications nowadays are there own product and industry.

Short of an actual proof house a destructive test could be done on something like this or anyone with CAD skills can do an FEA making assumptions for worst case and allowing an appropriate FOS.

Originally Posted by Stocky

Having an Engineering Degree (not mechanical) I'd be hesitant of putting little to any salt in a "qualification" most learning occurs after the "qualification" and many people I've dealt with that i would say are competent have no official qualifications. I guess I have a problem with made up qualifications determining competency. You can pass a degree with a 50% average. Qualifications nowadays are there own product and industry.

Short of an actual proof house a destructive test could be done on something like this or anyone with CAD skills can do an FEA making assumptions for worst case and allowing an appropriate FOS.

Sorry not going to discuss semantics because somebody does not believe in qualifications.

Originally Posted by STC

Sorry not going to discuss semantics because somebody does not believe in qualifications.

And yet you did....

Originally Posted by Stocky

What determines a competent person? The people responsible for many more important things can become "competent" by barely skimming by or being around for a long time never furthering there learning. Technology and analytical technology has greatly increased but many refuse to learn. Absolutely an assessment should be made but if we refused to go past what the current practice we stop learning.

"C"s get degrees....

And that is some very nice machine work.

Originally Posted by Ross Nolan

"C"s get degrees....

And that is some very nice machine work.

Yeah and what's a C 50-55%