Member postings for Russell Eberhardt

All working this morning on Android tablet here.

Install "Wine" on your MAC. It will enable you to run most Windoze programes directly. Failing that you could install VirtualBox which will enable you to actually install Windoze on an emulated virtual computer.

Works fine here on my Linux computers.

Russell.

The normal panel mount connectors are 3/8 - 32 UNEF. The 1/2 in thread is for the pcb mounted type.

Russell.

;;; et surtout, bonne santé.

Russell.

With an old compressor of unknown history like this I would advise getting a hydraulic test to 2x working pressure. If it ruptures, a tank this size can have nasty consequences.

Russell.

Here the gekkos and lizards keep the numbers down but I can't stop them nesting in my rain guage and gumming things up.

Russell.

Tartaix in Paris stock 20 x 4 and 25 x 4. They will cut to any length and supply mail order. Don't know if they will post to UK though but if you're stuck you could ask. Try emailing them on [email protected]. Their website is in English and French so I'm sure they will speak English.

Russell.

I'm not familiar with San Mai construction. My sword is made the other way round - a soft (tough) core with a hard folded steel wround the edge and sides. The sword was a present to myself when I was awarded my first black belt thirty years ago.

Russell.

Have a look here for proper gasket paper:

**LINK**

It's cheap, very tough, and designed for the job. The graphited material is tougher but rather expensive.

Russell.

Surely you need more than one type of steel. Traditionally a low carbon steel was used for the core and a high carbon and a higher carbon steel were folded together several times to produce the hard skin steel.

I am sure the exact compoition is not important my sword was made in the 15th century and is still razor sharp. I don't think they had a means of chemical analysis at that time!

I hope you are not going to use the traditional method of testing that was used on swords!

Russell.

Yes, Libre Office is excellent and free. It will create PDFs but if you open a PDF from within Libre Office it will be very slow as it tries to decode it and then display it in LO Draw for editing. Opening a PDF in Mint opens something called "Document Viewer" which is not part of the LO Suite and I believe is based on Evince.

Linux Mint is my second favourite flavour of Linux and is a good choice for a first try at getting away from Windoze.

Russell.

In a clock the wheel drives the pinion. In a reduction gear like yours the pinion drives the wheel so friction should be less of a problem. However the anti-backlash mechanism, if I remember rightly, consists of two wheels with a spring so that the teeth are staggered under spring pressure. This will create rubbing where a normal gear only has rolling motion between the teeth.

When I worked in a radio shop in around 1960 we used to put a thin smear of light grease on the teeth to reduce the friction created by the anti-backlash gear. Yes dust is a problem and needs to be kept out. I remember one set that a customer who had recently returned from Kenya brought in - it was full of giant spiders, beetles, and other nasties which had produced an HT short!

Russell.

For use on wood there will be very little wear but you do need a very sharp cutting edge to get a good finish (but not necessary for firewood!). Usually a few strokes by hand with a diamond lap is sufficient.

Russell.

No, don't use loctite. If they are a good fit they just need a light tap to hold them in place. Remember, you might want to dismantle it at some time in the future.

Russell;

Nice one Morgens.

That looks a lot simpler (and safer!) than a lot of winders.

Russell.

A bit off topic but when I was working at the Mullard research labs in the 1970s we had some special CRTs sent over from Eindhoven for testing. The customs paperwork specified that they should be returned or destroyed after a certain date.

One day a customs officer came into the lab where I was working and asked to borrow a hammer. A couple of minutes later there was a loud explosion from across the corridor!

Russell.

Yes, Okular. It works fast and error free here on PCLinuxOS. I believe there is a version available for Windows but I haven't tried it.

Russell.

Cycloidal gears give very low friction so are used in such things as clocks where the lkarge wheels drive the small pinions. However if the spacing of the centres is not exact (for example as a result of wear) they are no longer constant velocity and become noisy.

Involute gears are more robust, the spacing is less critical, and they are better for power transmission.

Russell.

John,

Have a look here

The software has full functionality except that it adds a banner round the edges on printouts. However there are ways round that and exported files are perfectly OK.

Personally though I find the latest versions to be too complicated. For quick 2D drawings I stick to DraftSight which is more or less a clone of Autocad of about ten years ago.

Russell

I believe the correct measurements are 20 x 0.45 x 45.

The M & P reference is 0321 204515.

Russell