Old Articles About Frame Design

[Andrew R Stewart]

In answering another forum's thread about steering geometry I made reference to a batch of Cycling (English magizine) articles about frame building. I found them and up loaded them onto my Flicker site. Enjoy reading the state of the art, as it was considered to be in the 1970s. Andy.
Old "Cycling" Articles - a set on Flickr

[David Tollefson]

My evening's reading is now set. Thanks!

[-HvA-]

Thanks for taking the time to do that!

[afwalker]

Wow that first page on forks is fascinating. I'm having a hard time making out the magic formula for no movement, is it Rake ab=R(1-sin M)/-cosM ? Cant tell if the slash is handwritten and it looks like =cos M? Thanks for the time spent to upload all these.
cheers
andy walker

[Morgan]

Great reading!

Thanks for doing this.

[Andrew R Stewart]

Wow that first page on forks is fascinating. I'm having a hard time making out the magic formula for no movement, is it Rake ab=R(1-sin M)/-cosM ? Cant tell if the slash is handwritten and it looks like =cos M? Thanks for the time spent to upload all these.
cheers
andy walker

Andy- As I said in another thread I've kind of given up on using math to guide my designs by. I do use math for getting the resulting dimensions after estalishing certain givens. I thought that some of you would find these reprints interesting. What's also neat is to look at the ads. So 1970sish. This is what i grew up on. The way ads and articles are presented today is so confusing to my mind sometimes. Andy.

[afwalker]

ahh, It's there in a later article. I am sure enjoying reading these.
Rake = Radius(1-sin head angle) / cos head angle.
thanks
andy walker