FarSports Kaze 35mm With Extralite Hubs

[Pistol2208]

Hi Just ordered these from Wheelsfar:

Extralite Hubs Cyber SP
35mm Kaze Tubular Rim Brake
Sapim Super CX-Ray Spokes

Has anyone had this combination, or close to and what experiences have you had? I've heard the 1:1 gear ration could be an issue, has anyone found this?

Weight is coming in at 954g so looking good to take Factor o2 Down to 4.8KG.

[Alfus]

1:1 gear ration could be an issue? why?

[Pistol2208]

1:1 gear ration could be an issue? why?

Its stated on their website :

'CyberRear freewheel mechanisms are suitable for road and cyclocross use (and not MTB) with a maximum shortest ratio of 1:1.
Shorter ratios may produce excessive torque and damage freewheel mechanism.'

https://www.extralite.com/Products/CyberRear%20SP-2.htm

Im not 100% certain why? guess thats why I'm asking the question.

[gbrnole]

there's only two pawls in the freewheel.

[Pistol2208]

there's only two pawls in the freewheel.

OK, So I guess this means a larger rear sprocket say a 32 (with a 30 front) puts more load on the rear cassette, which is potentially too much for just 2 contact points with the freehub ratchet.

Am I understanding this correctly?

[ultimobici]

Not been an issue on Mavic or Hope hubs. Maybe Extralite have skimped on their springs?


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[gbrnole]

there's only two pawls in the freewheel.

OK, So I guess this means a larger rear sprocket say a 32 (with a 30 front) puts more load on the rear cassette, which is potentially too much for just 2 contact points with the freehub ratchet.

Am I understanding this correctly?

that's essentially what they are saying. greater than 1:1 is a lot of torque going through very light components. the strength of the very light axle is probably a factor too. i personally think the two pawl system is an unnecessary weight saving with hit being so minimal. blasphemy in this forum, i know!

[Miller]

What pro rider was it a long time ago, maybe in the Tour, who crashed hard when his freewheel slipped under high torque. The mechanic had reduced the pawls from 6 to 3 to save weight and this allowed the freewheel body to distort under load. Anyone remember this?

[fastforageezer]

What pro rider was it a long time ago, maybe in the Tour, who crashed hard when his freewheel slipped under high torque. The mechanic had reduced the pawls from 6 to 3 to save weight and this allowed the freewheel body to distort under load. Anyone remember this?

I think that was Tyler Hamilton, and I recall hearing it was done to save drag when coasting rather than weight. Clearly not a smart move as I believe he injured his shoulder.

[ultimobici]

What pro rider was it a long time ago, maybe in the Tour, who crashed hard when his freewheel slipped under high torque. The mechanic had reduced the pawls from 6 to 3 to save weight and this allowed the freewheel body to distort under load. Anyone remember this?

There’s a big difference between altering an existing product and not designing it properly in the first place.


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[Miller]

@geezer thanks

[Pistol2208]

What pro rider was it a long time ago, maybe in the Tour, who crashed hard when his freewheel slipped under high torque. The mechanic had reduced the pawls from 6 to 3 to save weight and this allowed the freewheel body to distort under load. Anyone remember this?

I think that was Tyler Hamilton, and I recall hearing it was done to save drag when coasting rather than weight. Clearly not a smart move as I believe he injured his shoulder.

Sure he had other ways to get bigger performance gains