Here is a list of all the postings Barrie Lever has made in our forums. Click on a thread name to jump to the thread.
|Thread: Torx head variant or faulty batch?|
I will reply to you by PM
I think you should read your own words with regard to your post !!
Good quality fixings are not the domain of aerospace, good manufacturers will have a super high percentage of their fixing product getting through with no faults. Modern manufacturing techniques and process control make this possible. I doubt that Unbrako would supply fixings in the state shown in the photo.
I am not sure where NDIY resides, probably the UK, there is no comparison between the average working conditions in the UK, EU, Japan or the USA compared to China. There are terrible factories in the west but there are way less of them per capita than in China.
Are you sure about the wage comparison figures? You are saying that the average minimum wage in China (there is no Chinese National min wage as you mentioned) is 60% of £28K which is the average wage in the UK. I think with red mist (no pun intended) that you wrote your post with that you got your numbers muddled up some where. As a matter of interest the average wage in Shanghai is above the UK average wage, but Shanghai is the wage leader in China.
Whilst NDIY was a bit blunt, what he said was correct.
I was referring to nothing more than NDIY's aspersions on the good nature of the Chinese people and the low end of their manufacturing supply chain !!
I think you are right, just that the 'Great Escape' is much more in the forefront of my mind.
You cannot say that sort of thing around here, even if it is true.
Cooler for you !!
How is a hex better under any circumstance than a Torx?
I would like to understand your problems with Torx.
From my armchair.
|Thread: Piston/Cylinder Materials|
An engine just like shown below.
Ideally it should have a prop not a flywheel as it runs away with it self, I thought it would throw the rod last time I ran it.
If you want any measurements or details I will try and get them off the engine, there are no drawings though.
Edited By Barrie Lever on 20/08/2019 22:43:32
|Thread: my knowledge of steel needs improving|
Good to see you back.
|Thread: Grinding your own lathe cutters|
If you want to borrow the book then send me via PM your address details.
Take a look at the reviews of the book on Amazon.
The book really is a bible for Sherline owners.
You will not fall out with me over a book.
You really should get yourself a copy of the book written by Joe Martin who was the owner and real driving force behind Sherline, although not the creator.
The book is called 'Tabletop Machining' ISBN 0-9665433-0-0 and covers exactly the points you ask.
The book is a complete inspiration on using small machines.
I visited the Sherline factory about 6 years ago, they make a superb product that punches way above it's weight.
If you are going to buy the book, you can borrow my copy until yours arrives.
|Thread: Digital calipers made in same factory?|
I will not take your bet on the survival of the CE marking because I think you are right.
I am not in favour of an easy ride for manufacturers or importers, rather I would like to see higher standards imposed.
I know from experience this just drives the quality up exponentially.
Thanks for that information, it just confirms the worst suspicions about CE marking, it is not worth the ink it is printed with.
90% of CE marked products are self certified.
Do you really think that the mass of goods coming in from China and made by small Chinese companies have been certified in the EU? of course not, that is why they created 'China Export'.
How on earth are the Japanese and Americans getting all of their expensive medical equipment into the EU? well it is the same way that the UK will do when we are out, we will just follow the rules and get the equipment certified.
I stand by the argument that there is no point in a marking system that has no traceability.
We are so far apart on this that we really should call it a day and get back to making swarf !!
UL enhanced explained
Seems more complete than CE.
You really don't know what you are talking about regarding CE marking, as Robert has said the great majority of products are self certified.
The very clear difference between CE and UL/CSA is that the latter have to be submitted to the test house.
Check out the following and get back to me if I need to issue you an apology !!
CE marking is not worth the small amount of ink used to print the label.
The system needs to be independently verified with a unique ID for each product, then it would have some value, like I say, where there is a will there is a way.
My comments about faked CE markings are true and I would be prepared to discuss and share with you via PM if you desire.
As for a marking system that has more chance of working, how about the UL enhanced system? where each item has a unique identifier, this ID could then be checked back to a UL database to stop some dishonest person or company copying an identifier in addition to copying the product.
For whatever reason, there is no will to sort out the CE marking system, my hunch is that whilst the bureaucrat's know the system does not work but they don't want to admit defeat.
Where there is a will there is a way.
I like the thread locker image.
I agree the CE mark is an absolute joke.
I have heard of dodgy approval houses producing certificates that fool genuine retail customers into thinking that the item is approved and tested to the required standard, when in actual fact they have just rubber stamped the product and have no way of actually testing to the required standard.
Incorrect CE letter spacing is the least of the worries.
I am not sure if we will wash our hands of that failure on the 31st or not?
|Thread: 4 stroking a Merco 61...|
Do the 4 stroke engines like OS use a brass liner, that is normally a 2 stroke thing in combination with a ringless aluminium piston.
Go the CI route, there is a lot of other stuff to sort out in the project with out looking for extra work.
You will certainly need to make a new liner, you might be able to reuse the piston after removing the piston crown baffle.
For this project to work you will need some fairly creative ideas. You will certainly need to do some cross slide milling.
The rotary valve layout might save on making a crankshaft as well, I think it might be possible to pick up drive for the belt from the crankpin by getting a hole into the pin and pressing a drive peg into the hole.
Given the restriction of having no true milling facilities, how about taking a look at the layout of the Webra 4T 40, I think that might be a bit more lathe friendly.
Drive the rotary valve from something that goes into replace the old backplate.
I think there is quite a lot of work converting the Merco's and it will always have the exhaust stack in place.
How about doing a Vega, they ran sweetly as I remember.
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