allchin 1.5 scale o rings

allchin 1.5 scale o rings

This topic has 4 replies, 3 voices, and was last updated 4 June 2019 at 18:19 by JasonB.

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4 June 2019 at 16:06 #412571
John Vickery
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@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.
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4 June 2019 at 16:06 #29924
John Vickery
Participant
@johnvickery68803
4 June 2019 at 17:09 #412587
JasonB
Moderator
@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.
4 June 2019 at 17:54 #412599
Clive Brown 1
Participant
@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
4 June 2019 at 18:19 #412605
JasonB
Moderator
@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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