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*STOP PRESS* Coronavirus. A lot of Clubs have already cancelled all activities. Check carefully before you plan any travel

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CANCELLED because of coronavirus. Papplewick Pumping Station, Nottingham, Sunday 12th & Monday 13th April
CANCELLED because of coronavirus. Bournville Sub Day, Sunday 10th May 2020

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Submarine, Boating & Sailing Weekend, Norwich MBC, Weekend of 25,26th July

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Model Boat Convention, Haydock Park (Cancelled this year)

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Bournville Sub Day, Sunday 13th September

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Club Submarine Regatta, Furness MBC, Barrow in Furness, Sunday 20th Sept 2020

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    Making an 'O' ring

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    • Post n°1

    Making an 'O' ring Empty Making an 'O' ring

    Post  Resolution Rog on Fri Mar 11, 2011 9:29 pm

    I am making 'O' rings for end caps for WTC's. the dia of the end cap is approx 100mm. I am using 3mm 'O' ring material and remember that it's 3xdia + dia of ring (3mm in this case) Question is when calculating the main dia, is it the dia of the end cap where it fits into the tube, or the dia at the base of the grove? thanks Roger
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