I just took in a Bob Jackson. Bought by customers father new from a bike shop in early 1972. Frame built in fall 1971 as a stock frame. Flickr site has some photos I shot. As a note the top tube is not vented to either the seat tube or head tube. Fork measured up at 367 @ 54mm rake.
http://www.flickr.com/
<http://www.flickr.com/photos/49670597@N03/>Craig Ryan Noblesville, IN forestaframes.com
---------------------------------------------------
On Sun, Feb 13, 2011 at 6:08 AM, kevin sayles <kevinsayles@tiscali.co.uk>wrote:
> Hi John,
> Its a BOB JACKSON
>
> Had a look at your pals frame, and as a former framebuilder for Bob Jackson
> I'm going to state that I'm 99.9% sure its a Bob Jackson
> Olympus.........note the extended tangs on the bottom bracket shell...the
> heart shaped gear lever catch.......and yes we did the chainstay bridge that
> way!
>
> The only thing which is slightly a miss is the use of a Wagner chevron top
> fork crown instead of the typical 14bis semi slope...with welded on tangs
> [fork liners]....but the fork on this bike also has fork liners, even so I'm
> still convinced its a BJ......it might even be one I made?......my own
> Olympus had a Wagner crown, but I didn't bother with the fork liners.
>
> Wonder where my 1973 BJ Olympus is now!?........if anyone out there has a
> 23" x 22" top tube Olympus with a Davis sand cast BB shell with the extended
> tangs and unusually an extended tang underneath the bottom Prugnat type I
> headlug, and with a Wagner crown with the centre point removed, possibley
> still with half chrome front and rear stays [last seen in a French blue
> enamel, and sold to... I think... a Mr Guymer? in Hull UK] I'd love to be
> reunited with it again!
>
> Cheers
> Kevin Sayles
> Otley
> West Yorkshire UK