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Member postings for Pierre Kotze

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

Thread: Has anybody built Beng's Danni Steam engine.
25/09/2017 23:54:10

Brian

I don't have a suitable boiler at the moment, so I'm running it on compressed air. She can idle along at 3 psi, or really shake the table at 25 psi. At this higher pressure I cannot stop the crankshaft rotating by pinching it with my fingers.

A couple of things make this engine run strong:

I stuck to the best tolerances I could. Proper alignment of all parts is necessary to eliminate friction. I also used small amounts of gasket sealant on all mating surfaces ( cylinder- and piston valve end caps) and the valve box cover. She will hopefully not blow steam all over the place when I hook her up to a boiler.

Pierre

24/09/2017 17:12:48

Brian,

This table saw will be a replica like you find in the Mamod category. It is not supposed to cut anything - it will just buzz along like one. I plan to make various small realistic 'toy' tools that can be powered by the Danni.

Pierre

23/09/2017 19:06:32

Lawrie,

I intent to build a small replica of a table saw, using carbon steel cut-off blades 25mm dia.

Pierre

23/09/2017 18:58:31

Brian,

I attach a photo of how I machined the flat on the cylinder.

Maybe I was lucky when threading the valve stem. I have a 30+ year old set of high quality metric taps and dies and they are tough!

I received the straight spoke flywheel with the Danni kit from Bengs, but later on I ordered the curved spoke flywheel from them. Currently selling for 30 Euro.

Pierre

Bengs Danni

Thread: Old but not yet cold.
23/09/2017 18:48:51

Murray,

The bad smell was from the composting of saw dust from the saw mills as you enter the town. It is localized and never reaches the residential areas.

Larry,

That is exactly how I feel.

Pierre

23/09/2017 05:51:21

Hi Murray

My family call them either, But is actually where the central heating unit and hot water boiler are situated.

I reside in Nanaimo, Vancouver Island.

Pierre

22/09/2017 22:09:56

Hi Neil,

My blood is still warm from having lived in South Africa for 60 years. Fortunately my tiny workshop is situated in the boiler room of our house - nice and snug.

Pierre

22/09/2017 19:26:04

Good day, members.

I am retired wink, 78 years old, and live in Canada. My interests are all things mechanical, although I have never practised this in my career.

I started off with a little Emco lathe, and now I have a Taig micro lathe with cross-slide milling attachment.

My latest effort is in the Stationary Engine topic.

Pierre

Thread: Has anybody built Beng's Danni Steam engine.
20/09/2017 19:22:22

I am a new member and has followed this topic for a while. I completed my "Danni" without any problems on a Taig mini-lathe. It's running in reverse, and the belt pulley is for a project where I need lots of rpm's. Lubrication is a mixture of light machine oil and fine graphite powder.

img_1185.jpg

Pierre

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