Curt,
I don't know if the BN1 column thread is the same as one on the 6
cylinder non-adjustable column.
I shouldn't have said that 13/16-20 is a valid size, as I haven't looked
for a chart that lists it. I went by the fact that there's a 13/16-20
BSC die listed at British Tools and Fasteners -
http://www.britishfasteners.com/index.php?crn=263 - at the bottom of the
list (item 5735).
Sorry,
Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php
On 06/23/2011 12:32 AM, Curt/Nancy Arndt wrote:
> OK Guys,
>
> I just checked my BN1 steering column, and it looks to be closer to 3/4"
> x 20 TPI which IS a valid BSC (BSCy) thread. I'm just amazed that they
> used a cycle thread for this application.
>
> I've attached a copy of my BSC reference chart.
>
> Cheers,
>
> Curt
>
> On Wed, Jun 22, 2011 at 6:55 PM, Curt/Nancy Arndt <cnaarndt at gmail.com
> <mailto:cnaarndt at gmail.com>> wrote:
>
> Nick & Bob,
>
> I'm a bit confused here. As far as I am aware, BSC does not come
> in a 13/16 " size. While there appears to be a select few sizes
> that come in both 20 and 26 TPI, it does not include 13/16". In
> fact, my reference charts show that the only sizes in BSC that have
> both a fine and coarse thread are... 7/16", 1/2", 9/16", 5/8",
> 11/16", 3/4".
>
> I missed the history on this thread but we are talking about a
> British Bike here and not a Healey?
>
> Nick do you have a copy of the reference chart you got this
> information from? I'd like to include it in my reference material
> since I'm writing another article on British fasteners for Austin
> Healeys.
>
> Thanks,
>
> Curt
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