Two new additions

[nonowt]

Its highly unlikely anyone would spec a bike with 531 forks unless the rest of the frame was 531, as the biggest weight saving comes from the main tubes, and having at least the main tubes in 531 has got to be a better selling point than building a hi-tensile frame then just fitting 531 forks only.

I think the CB Cresta had 531 forks only: http://www.nkilgariff.com/CBcats/Cat_77late/CB_Intro.htm

 

[rrarider]

Its highly unlikely anyone would spec a bike with 531 forks unless the rest of the frame was 531, as the biggest weight saving comes from the main tubes, and having at least the main tubes in 531 has got to be a better selling point than building a hi-tensile frame then just fitting 531 forks only.

I think the CB Cresta had 531 forks only: http://www.nkilgariff.com/CBcats/Cat_77late/CB_Intro.htm

Well, there's a surprising thing, well spotted. My friend had a 1980s Raleigh Clubman, a nice bike with 531 main tubes only. I can't imagine why CB would build a bike with 531 forks only, unless it was for the cachet of the decal on the bike.