allchin 1.5 scale o rings

[John VickeryParticipant @johnvickery68803]

Hi Can anyone help in identifying correct size and material grade for glands and piston o rings for use n my allchin 1.5 model. Supplier information would also be appreciated!

Thanks in advance John.

[John VickeryParticipant @johnvickery68803]

[JasonBModerator @jasonb]

Hughes Drew it for Graphite yarn packing so you will have to work out your own hole diameters and depths to get the correct compression on gland O rings and the same with the piston ring grooves. Silicon rings would be best.

[Clive Brown 1Participant @clivebrown1]

When the repeat construction series was published in ME, starting sometime around 1974, Hughes did provide some details for O-rings for piston and glands. AFAIK, the commercially available drawings are still in the original form however.

Clive

[JasonBModerator @jasonb]

Just checked the text and sketches in the book and as Clive says O rings are mentioned and sizes of recess etc given.

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