The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
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 Post subject: Speedo nut size
PostPosted: Mon Dec 09, 2019 6:16 pm 
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Joined: Sun Dec 08, 2013 8:03 am
Posts: 141
Location: High Wycombe
Hi, does anybody know or could measure the dimensions of the speedo instrument thread eg thread, diameter and length ?
Thanks, Richard


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 Post subject: Re: Speedo nut size
PostPosted: Tue Dec 10, 2019 10:34 pm 
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Joined: Mon Dec 12, 2016 9:53 pm
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Location: Harrow Middlesex
Richard

the nut comes with the speedo cable,what bit are you after

Dave


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 Post subject: Re: Speedo nut size
PostPosted: Wed Dec 11, 2019 9:42 am 
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Joined: Thu Sep 28, 2006 12:13 pm
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Location: Over here...can't you see me?
It looks to be 5/8" UNC

Actual thread length is ~ 11 mm, but there's a further ~ 1-1.5 mm shoulder on the alloy spigot, there's then a further brass shoulder protruding from the alloy which is ~8 mm long and ~10 mm ΓΈ


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