When did 130mm replace 126mm?

[David9694]

did we move to 1 1/8” threadless headsets at around the same time?

And riddle me this - was it the advent of 9 speed systems that drove the drop outs change?

[iandriver]

According to dear Sheldon, 7 speed MTB and 8 speed road.
https://www.sheldonbrown.com/frame-spacing.html

[Brucey]

did we move to 1 1/8” threadless headsets at around the same time?

And riddle me this - was it the advent of 9 speed systems that drove the drop outs change?

'no' to both.

cheers

[David9694]

According to dear Sheldon, 7 speed MTB and 8 speed road.
https://www.sheldonbrown.com/frame-spacing.html

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[zenitb]

"When did 130mm replace 126mm?"

For mid-range buyers it was when the Shimano 105 "1055" groupset (with 7-speed 126mm wide hubs) was replaced with the Shimano 105 "1056" groupset (with 8-speed 130mm wide hubs - and the then new STI brifters).

Velobase seems to put this at 1993
http://velobase.com/ViewComponent.aspx? ... 95fb516a85
http://velobase.com/ViewComponent.aspx? ... 624d08db10

I bought a pair of 1056 hubs in 1994/1995 and I remember being careful to get the 130mm 1056 version hubs to match my frame dropout spacing .. so a 1993 introduction sounds about right to me. I bought the 8 speed bar end shifters though (which I still have in use), not the brifters.

Shimano Ultegra and Dura Ace (or Campag ?) may have introduced wider spacing earlier (???)- but like most people I couldn't afford that kit at the time - Shimano 1056 is when 8-speed/130mm "came to the masses" I think and that date looks like 1993.

So it was the advent of 8 speed not 9 speed that drove the dropout change (on road bikes).

(Mountain bikes had already gone to 130mm and then 135mm dropout spacing at the end of the 1980s, while still on 6/7 speeds. 8 and 9 speeds on MTBs stayed on the 135mm dropout spacing albeit with worse dishing)

[zenitb]

If you check out this 1992 Shimano catalogue you can see Dura Ace and Ultegra groupsets DID have 130mm spacing hub options in 1992 (and I guess quite possibly some time earlier than that, at least for Dura Ace). The 105 groupset however only lists 126mm wide hubs for 1992 - adding evidence to the theory that 1993 was the "changover year" for Shimano 105 - hence when 130mm road spacing went mainstream.

http://www.retrobike.co.uk/gallery2/d/1 ... mano92.pdf

[David9694]

did we move to 1 1/8” threadless headsets at around the same time?

And riddle me this - was it the advent of 9 speed systems that drove the drop outs change?

'no' to both.

cheers

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[Spinners]

130mm (and 135mm for MTB's) was firmly established by 1991 so my guess is late 1980's but will admit that I took a 12-year break from cycling from 1982 to 1991.

The threadless headset seemed to go mainstream in the mid-late 1990's although Lance Armstrong was still using a quill stem as late as 1999 (TdF).

[andrew_s]

Threadless headsets started in 1" on steel forks, and only moved to 1 1/8" when aluminium forks & steerers started, 1" not being stiff enough or strong enough in aluminium, and having a tendency to break.

[Brucey]

in detail, MTB 6s/7s hubs were often 130mm from the start. For a while rear MTB hubs could be 126 130 or 135mm.

Mainstream 130mm road hubs came as soon as 8s became a thing. In Ultegra and Dura-Ace there was 8s UG; in the other groupsets it changed from UG to HG and then from 7s to 8s. Not that there were ever very many but I think there were dalliances and experiments with standard-spaced (~5.5mm pitch) 7s prior to 7s 'ultra' spacing (~5mm pitch) and this must have required wider hubs too.

MTB or road 8s/9s/10s hubs are identical, so no change in the spacing required when 9s came along.

cheers

[zenitb]

The Wikipedia page on headsets references the original Dia Compe / Cane Creek patent for the threadless headset which was applied for in 1990 and granted in 1992

https://patents.google.com/patent/US5095770A/en

So yes ..threadless headsets on mountain bikes appeared at roughly the same time as mainstream 130mm dropouts on road bikes. However I recall it took a while before road bikes started appearing with threadless headsets as well...