Wilsons Sandbox

> TC brake line threads are 7/16 inch 20 or 7/16 National Fine. > Weird, not metric, BSF or Whitworth. Anybody know the origin of these > threads on a TC?

[quote]hi Rob - you did not think of the obvious: they are [b]American[/b] NF threads, 7/16" x 20tpi[b]! [/b] no doubt Ray will give us the history of Lockheed & Girling and thus the reason for Yankie threads - not all the best ideas were thought up by Brits supping warm ale huddled round a log fire! oc[b]T[/b]agonally TCRoger I was in the garage tonight trying to connect the last of my brake lines. Unfortunately, I had some problems trying to thread the rear brake line fitting to the rubber hose..I obviously did not have the two lined up and I started to strip the threads. I want to pass a tap and die along the threads before going any farther. Could someone enlighten me as to the type size of threads used on the TC brake lines - metal brake lines bought from Moss (Moss has told me they get their brake pipes from Naylor Brothers) - Lougheed rubber brake lines. It appears that the lines are not Whitworth threads - and none of my metric taps and dies seem to fit. It appears that the thread may be 1.25 but possibly a metric #10? Thanks in advance. I am hauling my wife and three kids to the Holiday Inn in St. Pauls this July. Unfortunately, the TC will have to remain in my garage for this - she will still be in quite a few pieces I suspect. Rob Greaves

----- Original Message ----- [b]From:[/b] roger.46tc@virgin.net [b]To:[/b] mg-tabc@yahoogroups.com [b]Sent:[/b] Wednesday, May 30, 2001 5:34 PM [b]Subject:[/b] Re: [mg-tabc] Brake Line Threads [quote]hi Rob - you did not think of the obvious: they are [b]American[/b] NF threads, 7/16" x 20tpi[b]! [/b] no doubt Ray will give us the history of Lockheed & Girling and thus the reason for Yankie threads - not all the best ideas were thought up by Brits supping warm ale huddled round a log fire! oc[b]T[/b]agonally TCRoger I was in the garage tonight trying to connect the last of my brake lines. Unfortunately, I had some problems trying to thread the rear brake line fitting to the rubber hose..I obviously did not have the two lined up and I started to strip the threads. I want to pass a tap and die along the threads before going any farther. Could someone enlighten me as to the type size of threads used on the TC brake lines - metal brake lines bought from Moss (Moss has told me they get their brake pipes from Naylor Brothers) - Lougheed rubber brake lines. It appears that the lines are not Whitworth threads - and none of my metric taps and dies seem to fit. It appears that the thread may be 1.25 but possibly a metric #10? Thanks in advance. I am hauling my wife and three kids to the Holiday Inn in St. Pauls this July. Unfortunately, the TC will have to remain in my garage for this - she will still be in quite a few pieces I suspect. Rob Greaves

On Wed, 30 May 2001, Robert Grunau wrote: > Hi Chip, > I am sure!! 7/16 NF is correct. checked both ends of a TC hose with 7/16 > tap and die and the fit is perfect. > Bob > On Wed, 30 May 2001, Robert Grunau wrote: > > > TC brake line threads are 7/16 inch -20 or 7/16 National Fine. > > Weird, not metric, BSF or Whitworth. Anybody know the origin of these > > threads on a TC? > > Are you sure? I thought they were BSP (British Standard Pipe). I'll > check when I get home. > > -- > Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 > Cub Hill, MD, USA 1962 Triumph TR4 CT3154LO CT3479E > fold@bcpl.net > > > > > -- Chip Old (Francis E. Old) E-Mail: fold@bcpl.net Manager, BCPL Network Services Phone: 410-887-6180 Manager, BCPL.NET Internet Services FAX: 410-887-2091 Baltimore County Public Library 320 York Road Towson, MD 21204 USA

> I guess it must be 7/17 UNF.