Search found 12 matches

by rogercrier
Sun May 29, 2016 11:25 am
Forum: Technical - Engines and Boilers
Topic: Modern PTFE based oils and greases (Krytox)
Replies: 1
Views: 4529

Modern PTFE based oils and greases (Krytox)

Has anyone contemplated using Du-Ponts "Krytox" lubricants (or simmilar) in their steam engines? There is every possibility that they will withstand working in steam so well that parts could be greased and oiled at services and then left un lubricated while in use as these oils and greases...
by rogercrier
Mon Mar 14, 2016 9:57 pm
Forum: Technical - non Engines and Boilers
Topic: K. N. Harris' Twin Launch Engine
Replies: 16
Views: 29418

Re: K. N. Harris' Twin Launch Engine

I've just noticed that figure 60 in the book is dated up at the top centre 6-7-62 (or 8) proving your line of thinking. I suppose that Mr Harris is assuming that the info contained in the book is sufficient for the engine to be built, which it probably is if you often design engines. If there had be...
by rogercrier
Mon Mar 14, 2016 9:28 pm
Forum: Technical - non Engines and Boilers
Topic: K. N. Harris' Twin Launch Engine
Replies: 16
Views: 29418

Re: K. N. Harris' Twin Launch Engine

Re reading the text I think you are right. The 1913 date is far to early to be relevant to the launch engine which is designed around Stuart parts which may not have been on sale back then, but I'm no expert on Stuart's time line on different engine designs.
by rogercrier
Mon Mar 14, 2016 3:25 pm
Forum: Technical - non Engines and Boilers
Topic: K. N. Harris' Twin Launch Engine
Replies: 16
Views: 29418

Re: K. N. Harris' Twin Launch Engine

It looks like it uses 2 Stuart 5a cylinders at £65 each
by rogercrier
Mon Mar 14, 2016 3:05 pm
Forum: Technical - non Engines and Boilers
Topic: K. N. Harris' Twin Launch Engine
Replies: 16
Views: 29418

Re: K. N. Harris' Twin Launch Engine

The book says that details can be found in The Engineer for 20-6-13 so it will be in imperial measurements then!!! Is anyone subscribed to them and can check back copies?
by rogercrier
Sun Jan 22, 2012 8:45 pm
Forum: Technical - Engines and Boilers
Topic: Perfect control of monotube boilers in our lifetimes!
Replies: 22
Views: 36881

Perfect control of monotube boilers in our lifetimes!

Here in the U.K.There is an article in the Feb 2012 issue (out now) of "Engineering in Miniature" which begins to explain how complete control can be applied to Monotube boilers. (the article is to be continued in an unknown future issue/s) This could trigger a seachange in how this type o...
by rogercrier
Sat May 28, 2011 10:21 pm
Forum: Steamboat Photography
Topic: A bit of HDR trickery
Replies: 15
Views: 23446

Re: A bit of HDR trickery

I hate to point this out, but if Libertas, the Roman Goddess of freedom is busy checking that none of the head nuts are coming loose, who the hell is checking the water level :o)
by rogercrier
Tue May 17, 2011 6:16 pm
Forum: Anoraks Corner
Topic: Perfection
Replies: 1
Views: 7449

Perfection

Here is a link to a photo stream featuring Holtey planes (the wood shavings sort) where you will find some awesome engineering. Notice how some of the bodies have the brass sides joined to the sole using "riveted dovetail joints"!!!!!! I must have a go at that sometime soon. Has anyone see...
by rogercrier
Tue May 17, 2011 5:37 pm
Forum: Technical - Engines and Boilers
Topic: Very very lightweight steamboat..Suitable engine?
Replies: 13
Views: 27532

Re: Very very lightweight steamboat..Suitable engine?

They are nice boats, but a lick of paint wouldn't go amiss on the smaller one :lol: I can see a "weed wacker" based steam engine in my future, so thanks for the info and design hints, although I will persevere with the D10 as it is already started. I will report back when "sea trials&...
by rogercrier
Sun May 08, 2011 5:20 pm
Forum: Technical - Engines and Boilers
Topic: Very very lightweight steamboat..Suitable engine?
Replies: 13
Views: 27532

Re: Very very lightweight steamboat..Suitable engine?

Thanks Fredrosse, that's usefull info! I may look at fitting ball races wherever I can in the D10, but if it wears out, then that's an excuse to make something else. I have all of the Ray Hasbrouck plans, and his no 9 engine is a 3/4" x 3/4" twin oscillating engine that he said is capable ...