[Healeys] BN1 Front wirewheel hub studs

[Michael Salter]

Bob et al,
Actually those studs only secure the brake drum to the hub so are not
subjected to axial loads anything like those of a wheel stud.
The problem is that they are quite special in that they are threaded on
each end with a land between the threads. (Pic attached).
The shorter end is threaded through the hub flange and "staked" to prevent
their unscrewing from the hub. (Pic attached) As I recall this is done
because of the limited space.
Getting these "staked" ends out of the hub without ruining the critical
thread in the hub can be very difficult and usually involves careful
drilling and re-tapping of the BSF threads in the hub.
Having recently encountered a pair of hubs with these threads ruined by
someone trying to remove the "staked" studs the only solution I could come
up with was to turn up even specialer (new word) studs with 3/8" UNF
threads to use in re-tapped threads in the hub...
Had all 8 studs all done in about 6 hours  ... you have to find something
to do when it is -30C outside :-)
Michael S.
BN1 #174

On Sun, Nov 1, 2015 at 10:00 AM, Bob Spidell <bspidell at comcast.net> wrote:

> My first thought was 'wow, do you really want to remove much, if any,
> metal from a wheel stud?'  But, if you're just gonna clean up some burrs on
> the threads you should be OK.
>
> http://britishfasteners.com/dies/bsf-dies.html
>
>
> ------------------------------
> *From: *"Michael Salter" <michaelsalter at gmail.com>
> *To: *"STEPHEN CUSS" <stephen.j.cuss at btinternet.com>
> *Cc: *"healeys" <healeys at autox.team.net>
> *Sent: *Sunday, November 1, 2015 6:27:39 AM
> *Subject: *Re: [Healeys] BN1 Front wirewheel hub studs
>
> Hi Shephen,
> The brake drum studs are 7/16 x 18TPI threads. The thread type is British
> Standard Fine (B.S.F)
>
> Michael Salter
> BN1 #174
>
> On Sun, Nov 1, 2015 at 9:16 AM, STEPHEN CUSS <
> stephen.j.cuss at btinternet.com> wrote:
>
>> Hi,
>>
>> Hoping someone can help me, I have an original BN1 100/4 built in 1954
>> some of the front wheel studs which hold the brake drum on look a little
>> worn, so I was looking to buy a die and re-cut the threads, does anybody
>> know what size and Teeth per Inch (TPI) these studs are?
>>
>> Thanks
>> in advance for your help with this matter
>>
>> Stephen
>>
>>
>
>


-- 
*If you can't fix it with a hammer, you've got an electrical problem.*
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