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Member postings for Carl Wilson 4

Here is a list of all the postings Carl Wilson 4 has made in our forums. Click on a thread name to jump to the thread.

Thread: Tig
18/10/2017 22:15:57
I have an RTECH ac/dc pulse unit. They do dc only machines too similar price to the ones you mention.

I've had mine 5 years with no trouble and it has done all I've asked of it.

Definitely need hf start with tig.

Doubleboost on YouTube uses RTECH gear and he has done a lot of good reviews, if you search the net.
Thread: New chinese lathe or old Myford lathe
18/10/2017 19:31:30
Chinese or Myford..

Neither. Myford is Chinese now anyway. Why pay a premium for what is an outdated design.

Buy second hand British. As many have said, there are plenty of really nice Boxford lathes around. Nice Harrisons too, an M250 or 300, or maybe a 140.
Thread: Ideas for Beginners' Articles
18/10/2017 10:10:50
I'm trying to quote from Jan West's post but I doubt it has worked...

All good ideas but Mew would not have the resources to do any of this. The editor is part time and everything is done to a budget.
18/10/2017 10:07:10
Alternatively just subscribe to Doubleboosts You tube channel.

Despite being in engineering since I was 16, I've learned more in a few months by watching him than I could have gained from a far longer period of reading magazines.
Thread: BSF and Whitworth "Across the flats " sizes.
12/10/2017 12:30:21
A friend of mine always uses an 18mm spanner to unscrew the cap on 45 gallon oil drums. When asked why he said it's so that it has a job to do, and doesn't feel left out.

Similarly, I occasionally use the 14mm instead of a 9/16ths just to keep its hand in.
Thread: Yet Another Martin Evans
11/10/2017 19:35:07
Common in the forces to have same surnames in a unit.

In basic training in the RAF those who had the same surname had it suffixed with the last 3 digits of their service number. I became Wilson 350.
Thread: BSF and Whitworth "Across the flats " sizes.
08/10/2017 22:16:45
Was it Japanese? That is common on Japanese motorbikes apparently. Also I once worked on a very large winch that was built in Romania, the fasteners were like that too.
Thread: Stepper Motors in Parallel
08/10/2017 20:51:51
The problem you have using two stepper motors like this is that the rotor is a permanent magnet.

If the rotor were wound and could be excited with an Ac supply in both motors then you would have a device called a "synchro". Used to be used a lot on aircraft systems.
Thread: James May Reassembler: What should he rebuild next?
08/10/2017 17:40:12
Not long since I decided to watch a programme remembered from my youth, "The Great Egg Race" hosted by Prof. Heinz Wolf. You'll likely remember the format. Teams of (usually) engineers from UK firms or Mod are given a funny task to do or problem to solve. They have to make a contraption to do it, out of bits they are given.

I loved the programme as a kid, but watching it now I realised there is absolutely no way it'd be commissioned now.

It mainly consisted of groups of clever blokes being left to get on with it and a camera pointed at them talking in slightly self conscious low voices about what they intend to do.

It was a different world indeed back then.
Thread: BSF and Whitworth "Across the flats " sizes.
08/10/2017 13:09:19
Same on aircraft. Mostly Britool stuff, as bought by the MOD.
07/10/2017 16:28:54
No problem.
07/10/2017 13:08:45
Hey Andrew,

The caveat to the info I just gave you - which is sacred aircraft technician arcane knowledge to be guarded with your life - is take care. Some of the AF standard sizes are 1/32 larger than the BSF across flats dimension.

So for some of the sizes very infrequent use is recommended, ie to get you out of trouble. Even then use bi hexagonal socket or ring spanner with care.
07/10/2017 12:56:09
I used to work on a type of aircraft that was all BSF and BA.

On detachments the toolkit carried was quite rudimentary due to space restrictions. Hence it would sometimes be necessary for me to be able to use a locally borrowed standard imperial or metric AF spanner/socket on a BSF bolt. Not ideal, but sometimes you have to urinate with the penis at your disposal.

So I needed to know what the AF sizes of BSF bolts were in order to find the closest metric or imperial size. Fortunately there is a formula and this is it:-

AF = Whit.dia x 1.5 + 0.125.

For a BSF bolt the Whitworth diameter is the thread core diameter and the BSF diameter is the thread crest, eg 1/4 BSF = 3/16 Whit.

This info is all based on BS47 (1948).
Thread: Is there a new competition in MEW
04/10/2017 23:02:04
Socks.
Thread: Swarf Trivia
27/09/2017 20:52:12
I've got lots of aluminium swarf you can have if you want. Pm me if interested.
Thread: Outstanding Service
23/09/2017 16:52:45
Minus one for Chester. My brother bought a mill from them and he found it damaged when he uncrated it. No way they couldn't have seen it. They then proceeded to send him a pile of scrap as replacement parts.

He sent the lot back and they then took their time refunding him.

I have no association with them apart from being the relative of a completely hacked off customer who will never use them again.
Thread: Level lathe set up
16/08/2017 21:33:33
Hello David Thompson.

I do have some knowledge on the subject. Not a lot, I admit, and probably not as much as many of the luminaries hereabouts.

My posting was intended to be taken with a certain degree of levity. The subject of lathe set up and levelling has been done to death and invariably results in a bun fight between respective camps on whose method us the best.

My words were intended as a bit of a laugh, a sigh and a "here we go again..."

I'm sorry if that didn't come across.

Carl Wilson.
16/08/2017 19:07:00
Shoot me now.
Thread: USB oscilloscopes - are they any good?
13/08/2017 08:37:06
As an aside it's worth looking at the many (some free) scope software packages that use a pc or laptops sound cards. All you need to do is make a probe. These things are good for Arduino type work.
Thread: Harrison M400 change wheels
06/08/2017 21:53:36
Hi,

Can anyone tell me what module the Harrison M400 change wheels are? Is it 1.5 like the 250 and 300?

Thanks,

Carl.
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