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Member postings for J Hancock

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

Thread: Tools needed to build a 3 1/2in gauge Tich
06/05/2022 19:48:08

I would try to find a design with outside valve gear , valve sitting on top of cylinder.

You will know why when you come to .make minor changes to your inside valve gear .settings.

06/05/2022 16:47:42

Being brutally honest here , don't confuse small with easy. And if you do decide on Tich make sure EVERY drawing dimension is right because LBSC used a very special ruler for his dimensions.

A Gauge 1 Project is a guaranteed confidence builder , and it works.

Then build your bigger locomotive.

Thread: Galvanic Corrosion
01/05/2022 11:03:41

As said, too late to stop the problem now but the 'ignorance' of designers ' to foresee the problem continues.

Entry of moisture /electrolyte down to molecular size is the enemy , permanent contact of oil/grease the friend ..

Thread: Ambiguous words
25/04/2022 15:54:11

The last word?..............................dying.

22/04/2022 07:24:06

sophisticated

Thread: Wind - trivia
16/04/2022 10:18:18

Correction that should read Menestheus !

16/04/2022 10:10:52

Being somewhere at sea off Cap Wrath , MV Menetheseus , Jan '68 , in the worst ever recorded weather in the UK was quite exciting too.

Thread: Before calculators
15/04/2022 14:42:19

The actual question was part of my 1961 4th form tech drawing papers , now consigned to the bin.

Show how you would make a square of exactly six square inches.

15/04/2022 09:53:39

Who remembers how to find the square root of a number with a tape measure, piece of string and a pencil. ?

For example 6.

Draw a line 6 units long, mark , add one unit of length .

Now draw a semi-circle radius 3.5 units.

Draw vertical line up from the 6 mark, measure length where it crosses circle.

Answer 2.44948 units long.

Might come in handy to know one day.

Thread: Boiler gas burner
14/04/2022 20:08:50

As in full-size , so in miniature.

Do not expect the same output from the boiler with the change you propose.

The paraffin flame was a different colour to your gas flame and the difference will be noticed in the steam raising ability , unless other changes to the boiler design are made.

Thread: Central Heating Control
10/04/2022 14:30:31

Anyone remember the system Beal were trying to develop , to use the waste heat from a gas boiler to drive a Stirling engine to generate electricity ?

Thread: UK plans eight new nuclear reactors to boost production
08/04/2022 08:47:07

Even the major news channels keep talking about eight new nuclear power stations instead of eight 'reactors '

as in the first government statement.

In any event , our ( UK ) ability to build reactors, boilers, turbines, etc , of sufficient size or quantity has long gone.

Houses ,warehouses, no problem , real factories no chance.

07/04/2022 19:07:07

Where did the 'off-the-shelf ' small modular reactors go ?

07/04/2022 14:27:27

We could certainly make coal a 'clean enough' fuel to use economically to make electricity , until such time as the cleaner alternatives could replace it..

However , that is too simple , it is not in the future plans of our leaders for us.

Thread: Is it really a joke
07/04/2022 13:52:29

All charged by the eight 'new' nuclear reactors we are going to build and have running by 2030.

Ten if Hinkley C is not included plus the 25GW of additional windmills ...............

Any bets ?

Thread: Why is electricity so expensive?
05/04/2022 08:34:46

Things will get even worse now that National Grid have sold off all our gas grid to an Australian mining co.

Thread: Central Heating Control
04/04/2022 17:49:38

Phil H1 , a nice ex-Flying Fortress, electrically heated flying suit , is what you are looking for.

Problem is.....getting the rest of the household to wear one as well .

Good luck , and do let us know how it all works out.

We all may finish up wearing one before this energy thing is over.

Thread: how to make it stay in ?
30/03/2022 06:19:19

A 'loop ' pin in each plug with a 'rubber band' through the hollow axle .

Thread: Rob Roy boiler; help needed.
15/03/2022 16:32:42

As above , plus the correct sequence of 'assembly' is vital , one wrong step guarantees major problems further down the line.

Thread: Does anyone recognise this model engine?
13/03/2022 09:35:42

As above plus keep your fingers well away because it looks like everything moves !

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