<div style="color:black;font: 12pt Comic Sans MS, sans-serif;">Bob,
<div>If you had one available, how would you go about checking the thread angle? </div>
<div>Gary Hodson</div>
<div><br>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font size="2">-----Original Message-----<br>
From: Bob Haskell via Healeys <healeys@autox.team.net><br>
To: Harold Manifold <manifold@telus.net>; john harper <ah100tech@gmail.com>; Hank Leach <gradea1@charter.net><br>
Cc: healeys@autox.team.net <healeys@autox.team.net><br>
Sent: Sun, Aug 8, 2021 7:14 pm<br>
Subject: Re: [Healeys] Speedo Drive Thread Size?<br>
<br>
<div dir="ltr">Harold,<br clear="none"><br clear="none">As has been pointed out in separate emails, there are two standards that <br clear="none">include 3/4" dia with 26 TPI. British Standard Cycle with thread angle <br clear="none">of 60 degrees and British Standard Brass with a thread angle of 55 <br clear="none">degrees. Since the speedo drive is brass I would suspect the latter, <br clear="none">but I don't have one handy to check.<br clear="none"><br clear="none">Cheers,<br clear="none"><br clear="none">Bob Haskell<br clear="none">Austin Healey 3000 BN7/BT7 registrar<br clear="none"><br clear="none">On 8/8/21 7:33 PM, Harold Manifold via Healeys wrote:<br clear="none">><br clear="none">> Thanks for all your replies. I will add BSC to my fastener list. I <br clear="none">> will see if I can locate a die.<br clear="none">><br clear="none">> Harold<br clear="none">><br clear="none">> *From: *john harper <mailto:<a shape="rect" ymailto="mailto:ah100tech@gmail.com" href="mailto:ah100tech@gmail.com">ah100tech@gmail.com</a>><br clear="none">> *Sent: *Sunday, August 8, 2021 12:33 PM<br clear="none">> *To: *Hank Leach <mailto:<a shape="rect" ymailto="mailto:gradea1@charter.net" href="mailto:gradea1@charter.net">gradea1@charter.net</a>><br clear="none">> *Cc: *Harold Manifold <mailto:<a shape="rect" ymailto="mailto:manifold@telus.net" href="mailto:manifold@telus.net">manifold@telus.net</a>>; <br clear="none">> <a shape="rect" ymailto="mailto:healeys@autox.team.net" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a> <mailto:<a shape="rect" ymailto="mailto:healeys@autox.team.net" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>><br clear="none">> *Subject: *Re: [Healeys] Speedo Drive Thread Size?<br clear="none">><br clear="none">> Harold<br clear="none">><br clear="none">> I can confirm that in my documents there is a section British Standard <br clear="none">> Cycle thread. Diameters are from 1/8" to 3/4", the largest. TPI is <br clear="none">> from 40 thru 26. It is a 60-degree form rounded on top and inside.<br clear="none">><br clear="none">> It first became a recognized standard in 1902<br clear="none">><br clear="none">> Best regards<br clear="none">><br clear="none">> On Sun, 8 Aug 2021 at 18:45, Henry G Leach via Healeys <br clear="none">> <<a shape="rect" ymailto="mailto:healeys@autox.team.net" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a> <mailto:<a shape="rect" ymailto="mailto:healeys@autox.team.net" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>>> wrote:<br clear="none">><br clear="none">> Harold-you can get these parts at: <a shape="rect" href="https://britishfasteners.com/" target="_blank">https://britishfasteners.com/</a><br clear="none">> <<a shape="rect" href="https://britishfasteners.com/" target="_blank">https://britishfasteners.com/</a>><br clear="none">><br clear="none">> They have all the British sizes and tools to boot including BSC! Hank<br clear="none">><br clear="none">> -----------------------------------------<br clear="none">><br clear="none">> From: "Harold Manifold via Healeys"<br clear="none">> To: "Ken Fleming via Healeys"<br clear="none">> Cc:<br clear="none">> Sent: Sunday August 8 2021 9:27:29AM<br clear="none">> Subject: [Healeys] Speedo Drive Thread Size?<br clear="none">><br clear="none">> Just when I thought I had a handle Whitworth, BSPP, BSPT, SAE,<br clear="none">> UNF, etc. along comes BSC (British Standard Cycle). The threads on<br clear="none">> the transmission speedo drive and the angle drive are not the best<br clear="none">> and could use a refreshed. The pitch is 26 TPI and the diameter is<br clear="none">> ¾” as best I can measure. After searching Google the closest match<br clear="none">> I could find is 3/4" X 26 TPI BSC.<br clear="none">><br clear="none">> I have never heard of British Standard Cycle before. Can anyone<br clear="none">> confirm if this is the tread size?<br clear="none">><br clear="none">> Harold<br clear="none">><br clear="none">> _______________________________________________<br clear="none">> Support Team.Net <a shape="rect" href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html </a><br clear="none">> <<a shape="rect" href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a>><br clear="none">> Suggested annual donation $12.75<br clear="none">><br clear="none">> Archive: <a shape="rect" href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys </a><br clear="none">> <<a shape="rect" href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys</a>> <a shape="rect" href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive </a><br clear="none">> <<a shape="rect" href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a>><br clear="none">><br clear="none">> <a shape="rect" ymailto="mailto:Healeys@autox.team.net" href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a> <mailto:<a shape="rect" ymailto="mailto:Healeys@autox.team.net" href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a>><br clear="none">> <a shape="rect" href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys </a><br clear="none">> <<a shape="rect" href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a>><br clear="none">><br clear="none">> Unsubscribe/Manage: <br clear="none">> <a shape="rect" href="http://autox.team.net/mailman/options/healeys/ah100tech@gmail.com" target="_blank">http://autox.team.net/mailman/options/healeys/ah100tech@gmail.com </a><br clear="none">> <<a shape="rect" href="http://autox.team.net/mailman/options/healeys/ah100tech@gmail.com" target="_blank">http://autox.team.net/mailman/options/healeys/ah100tech@gmail.com</a>><br clear="none">><br clear="none">><br clear="none">> _______________________________________________<br clear="none">> Support Team.Net <a shape="rect" href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br clear="none">> Suggested annual donation $12.75<br clear="none">><br clear="none">> Archive: <a shape="rect" href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys </a><a shape="rect" href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br clear="none">><br clear="none">> <a shape="rect" ymailto="mailto:Healeys@autox.team.net" href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a><br clear="none">> <a shape="rect" href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br clear="none">><br clear="none">> Unsubscribe/Manage: <a shape="rect" href="http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net" target="_blank">http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net</a>
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