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Grumph article in OBM

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  • Grumph article in OBM

    There is an article on Gareth Tunstall's Grumph is in the December OBM.
    Last edited by John Wakefield; 30/11/2017, 02:01 PM. Reason: pic removed to avoid breach of copyright

  • #2
    Designed and made his own engine plates. Maybe we need a follow-up?

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