Are you joking? Myford used whatever they had in stock at the time. My ML7 has a/f, ww, unf, unc, ba and metric. Basically every common thread. Don't go by the manual either!
- Thread starter dobbslc
- Start date
Are you joking? Myford used whatever they had in stock at the time. My ML7 has a/f, ww, unf, unc, ba and metric. Basically every common thread. Don't go by the manual either!
prepman
Forum Supporter
- Messages
- 2,706
- Location
- Gwynedd UK
They'd be UNF UNC?wasnt on about old bangers
more modern cars before metric
prepman
Forum Supporter
- Messages
- 2,706
- Location
- Gwynedd UK
The whitworth thread was apparently a masterpiece of design for efficiency and strength.
All my spanners were whitworth (5/16 for Wade 1/4 compressions etc). Then AF sizes came out for the revolutionary UNC UNF (I believe). Afterwards came the metric which approximated imperial sizes and rounded nuts off.
BA I used a lot down to 12BA. Could barely see them nowadays.
So Whit, BSF, BA, BSP, UNC, UNF, ACME, (Imperials) and a few specials I'm sure I've missed. (citation?). ALL of those are on the Colchester Student and the ML7. Bicycle threads?
Don't recall a BSC?
No doubt I'll have got some of this wrong? I wait to be corrected.
All my spanners were whitworth (5/16 for Wade 1/4 compressions etc). Then AF sizes came out for the revolutionary UNC UNF (I believe). Afterwards came the metric which approximated imperial sizes and rounded nuts off.
BA I used a lot down to 12BA. Could barely see them nowadays.
So Whit, BSF, BA, BSP, UNC, UNF, ACME, (Imperials) and a few specials I'm sure I've missed. (citation?). ALL of those are on the Colchester Student and the ML7. Bicycle threads?
Don't recall a BSC?
No doubt I'll have got some of this wrong? I wait to be corrected.
RWD3M
Forum Supporter
- Messages
- 3,299
- Location
- Wiltshire, UK
And those that are not!Apart from the ones that are purely Whitworth/ BSF & BA
The 918cc engine in the Morris 8 and Minor were metric even in the 1930's. William Morris however, in his infinite wisdom, did insist that although it used all metric threads, all the nuts and bolts would have Whitworth heads on them!
For some reason, 20 ish years ago, our technical manager decide our new machine would be UNC, for the American market. . . which we then sold mainly into Europe . . .
Except there are some components you simply can't get with non-metric threads . . . so we have metric and UNC threads in the same component .. .
Machine shop realised the clear out of imperial sized tooling a couple of years previous was a bit irritating . . .
Service engineers discovered they needed to carry more tools . . . bigger, heavier tool boxes . . .
All of use discovered we didn't have stocks of the correct sized fasteners, despite them being listed as stocked . . . . and then we discovered we had fasteners of the same thread but requiring different sized tools (mainly cap heads) . . .
What a joy that was . . . and still is . . .
Except there are some components you simply can't get with non-metric threads . . . so we have metric and UNC threads in the same component .. .
Machine shop realised the clear out of imperial sized tooling a couple of years previous was a bit irritating . . .
Service engineers discovered they needed to carry more tools . . . bigger, heavier tool boxes . . .
All of use discovered we didn't have stocks of the correct sized fasteners, despite them being listed as stocked . . . . and then we discovered we had fasteners of the same thread but requiring different sized tools (mainly cap heads) . . .
What a joy that was . . . and still is . . .
OJCar
Member
- Messages
- 1,913
- Location
- Lothian & Westmorland
The engine that was fitted in the Morris 8 series 1 was made in the formerly Hotchkiss works purchased by Morris.
Hotchkiss being a French Arms and Motor manufacturer they naturally used metric threads.
The machine tools Morris had purchased as part of the factory were metric, BS stock was used to produce them so the Motor Trade would not have to buy new spanners ( and it was then cheaper than metric stock).
Hotchkiss had built a WW1 "shadow" factory in Coventry in Far Gosford Street, part of which survives today as the Morris Building of Coventry University.
https://www.google.com/maps/place/William+Morris+Building,+Coventry+CV1+5DD/@52.4067202,-1.501276,3a,75y,162.91h,110.5t/data=!3m6!1e1!3m4!1sm93ML2dpwS1gOkUGrI_JEA!2e0!7i16384!8i8192!4m6!3m5!1s0x48774bb86d7410c5:0x49ab336c2f6cdc11!8m2!3d52.406587!4d-1.5006539!16s/g/1tdfy6tt
Last edited:
prepman
Forum Supporter
- Messages
- 2,706
- Location
- Gwynedd UK
I must have had the same apprenticeship as him. Did try that organised malarkey, but it just wasn't me.
A 12.5mm would be too small for most 1/2" and 13mm would round off anything reasonably tight, the bigger you go the less important it is. 1/4" whit is 13.3mm which is too big for 13mm and too small for 14mm, the closest inch AF sizes are even further away. Not difficult once you know and there are plenty of whit spanners about, got all I need, never paid a penny.
