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I believe the chain ring is steel on the carbon crank set. Does any one know the weight of this? Wondering if there is much to gain by swapping it for an alloy one
Comparing to SRAM, you're looking at ~130g Vs ~60g for a 28t ring.
So you can save some weight if it's steel by going aluminium.
Is it direct mount? I’ve got an NX dub crankset with a steel ting on and a truvativ stylo which I believe has an alloy ring on. Both direct mount.
There’s a surprising weight difference between them actually - although I would prefer them both to be steel for longevity.
The dub one with the heavy ring has gone on the enduro and the lighter one with gxp has gone on the hardtail.
It’s direct mount. I don’t suppose anyone knows what offset I’ll need?
The wheels are boost!
Boost direct mount chainrings are 3mm. Non boost are 6mm and fat bike are 0mm.
Excellent thankyou
Just to complicate things, you might find a non boost chain ring will work fine and actually give you a better chain line....
Or you might find a non boost one hits the chainstays. On my boost hardtail the boost chainring only just clears the chainstay by 2mm tops. I did consider getting a 0 offset one to get more clearance but it would make a horrible chainline I think.
What’s the advantage of bringing it in closer towards the frame?
cookci
Member
What’s the advantage of bringing it in closer towards the frame?
If you get away with it,a better chain line.
As said, clearance is the issue. You might or might not get away with a non boost ring.
All depends on the frame really. If you can get away with non boost you’ll have a better chainline with the lower gears (bigger cogs). But it means you have less clearance to the chainstays. On a normal sort of profile frame you might get away with it - but my frame has flared chainstays early to allow for up to 2.8” tyres on 650b. Plus it’s a cheap frame so it’s all tubular with no machined solid billet used for the chainstay yoke. If you had a frame that had that it might have more clearance.