Engine plans

[Michael GilliganParticipant @michaelgilligan61133]

Yesterday, I downloaded "Methods of Machine Shop Work"

by Frederick A. Halsey [first edition, published 1914] : **LINK**

https://archive.org/details/methodsmachines00halsgoog

The Metric system is quite vigorously rejected in Chapter III

… Definitely worth reading; whatever your persuasion.

MichaelG.

[SillyOldDufferModerator @sillyoldduffer]

Posted by Michael Gilligan on 08/08/2018 18:22:24:

Yesterday, I downloaded "Methods of Machine Shop Work"

by Frederick A. Halsey [first edition, published 1914] : **LINK**

https://archive.org/details/methodsmachines00halsgoog

The Metric system is quite vigorously rejected in Chapter III

… Definitely worth reading; whatever your persuasion.

MichaelG.

Thanks Michael – excellent link, I'm an absolute sucker for old engineering books.

[Mick B1Participant @mickb1]

Posted by SillyOldDuffer on 08/08/2018 11:41:58:

Posted by Mick B1 on 07/08/2018 12:51:24:

Posted by Andrew Tinsley on 07/08/2018 12:35:19:

I am amazed that people can take up fixed positions on this topic. I am equally at home with Imperial and metric dimensions and sometimes even mix them together on a drawing!

There is nothing difficult in either system. Neither is logical if you delve into them. At this point I will take cover.

Andrew.

No need. I think there are plenty of us to give you covering fire…

First of all, let me confess I'm not really the anti-Imperial zealot I'm pretending to be! Please put away your pitchforks.

…

If you own an imperial workshop, work on imperial models, and think in imperial there's no reason to change. But please don't believe that Imperial is 'better' than metric, and please don't attempt to foist imperial as a working system on youngsters.

Dave

I wasn't coming out in favour of Imperial, but of working in whatever system gets you a successful outcome and a project that works. And the only practical solutions for youngsters or anybody else are either to use the units you find or convert them. However the dimensions are expressed, the parts either fit right or they don't.

If I came across a drawing in Russian vershoks I might struggle enough to want to convert it into units I could cope with more easily, but if others want to use those units, I'd not criticise them.

[Neil AParticipant @neila]

Have I missed something here?

The only two people in this discussion who have actually attempted to answer the original question of whether there was a metric version of the engine are Jason B and Jim Nic.

Everyone else seems to have hopped on the old hobbyhorse of imperial verses metric, which is not the answer we are after.

If there was a metric version already produced, I am sure that Ian McVickers would not wish to "re-invent the wheel", but just save himself a little extra work. It is just a fact of life that older drawings were produced in the dimensioning system of the day.

In reality the imperial and metric systems are no better or worse than each other, just different. They both produce working models. You just have to be careful if you choose to mix them on the same part.

Neil

Edited By Neil A on 08/08/2018 23:58:15

Edited By Neil A on 08/08/2018 23:59:25

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