Bruce and List
I am looking forward to Hillary's thoughts on the chainstays of the BSA,
Meanwhile I found some reference information regarding the chain stays on
the BSA.
snip
> > Look close at the pix of the chain stays, and how chain ring clearance
was
> > achieved ...it appears four tubes (two shorties at the bb end, and two
> > longies at the dropouts end) with a casting (which resembles a fork
crown to
> > me; wish I could see this better) or plate (or something) connecting
member
>From an early BSA product catalogue
"Back Fork Bridge"
Two small tubes connect the "BSA Crank Bracket" to the "Back Fork Bridge"
Two "D" Section Tubes connect the "Back Fork Bridge" to the "BSA Back Fork
End"
Wayne Jolly, Toronto Now pronounce "Back Fork Bridge" with a proper BSA accent !!!
>
> > From: "Brandon Davis" <art_52@hotmail.com>
>
> > I came across this on eBay ...check out the seat cluster. Early 1900's?
> > Quite a bit prior to the 1950's, at least, or so I'd hazard.
> >
> > Look close at the pix of the chain stays, and how chainring clearance
was
> > achieved ...it appears four tubes (two shorties at the bb end, and two
> > longies at the dropouts end) with a casting (which resembles a fork
crown to
> > me; wish I could see this better) or plate (or something) connecting
member
> > ...and do note the tire clearance, too. *Quite* interesting.
> >
> > antique bicycle Item # 2163480737
> > http://ebay.com/
>
>
> I think I remember reading that Hilary can roughly date BSA cranks from
the
> chainring style? Interesting bike-it looks like teens or twenties to me.
Not
> much danger of toe overlap there!
>
> Bruce
> Dundee
> Scotland