49 mm headtube to 1- 1/8 "

[RufusChucklebutty]

I've got a Canondale Super V frame I'm rebuilding that has just a bare empty 49 mm head tube, can anyone suggest the lowest cost option for adapters ect to get a standard straight 1 1/8" Suntour fork in there ?

 

[rogerzilla]

Designed for a Headshok?

https://www.cannondalespares.com/Ca...-1_8th-Steerer--KP058-/product_detail/3-40287

 

[RufusChucklebutty]

That's what I need but its out of my budget , these actually cost more than my local engineer turning a pair of bushings to fit.

 

[rogerzilla]

I think it's a special Cannondale tax! Headshok was its own proprietary standard, so there is limited choice.

 

[andrew_s]

I'd guess that the bike takes a 1.5" steerer fork, and what you need is a pair of these plus a regular 1 1/8 headset
https://www.jejamescycles.com/product/4297/specialized-specialized-ht-reducer-1-5-to-1-1-8in/option/

Or alternatively one of these

View: https://www.amazon.co.uk/FSA-Reducer-Headset-Straight-Bearing/dp/B07GK8S4LY
(FSA Orbit Z 1.5R 1-1/8"-1.5" Reducer Headset Straight Sealed Bearing )
or cheaper: https://www.ebay.co.uk/itm/163203162578

Based on
https://www.cannondaleanswers.com/d...eadset-fork-compatibility-for-mountain-bikes/

 

[rogerzilla]

Headshok is not a 1.5" steerer; it's unique.

 

[andrew_s]

Headshok is not a 1.5" steerer; it's unique.

No, but a frame isn't a Headshok, and Headshok isn't a steerer. If anything, a Headshok is a headset (IMO).
The OP is fitting a 1 1/8" steerer fork.

The only difference between a Headshok head tube and a standard 1.5" head tube is that the Headshok head tube is specified to be 4.5" long, and a 1.5" head tube can be any length the frame designer chooses.