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Knackered my hub at the weekend. It was on a non-boost 2016 transition smuggler.
So I need a new hub and with future compatibility in mind, boost is a better bet.
I noticed that the frame is pretty slack on the hub so the frame stays compress in a few mm with the correct 142mm hub.
If I splay the stays very slightly (less than it compresses with a 142 hub!) I can fit a boost hub in there. Only problem noticed so far is that the rear maxle doesn't thread in as far obviously, but it does have a full 4 turns.
I didn't try with mech and disk compatibility due to incorrect ratios and disk size.
So, if I got a boost hub will it work and/or will I face certain death?
Ta!
I know a guy (cough) who accidentally fitted a 142 hub in a 135x12 frame, the frame flex seemed minor but the disc was a no go.
The rotor is not going to align, that's the biggest issue, the spacing isn't terrible, widening the stays isn't going to add that much stress, but there would also be the risk of threading the rear end if those 3 or 4 threads get too much force through them.
Future in mind, i'd just get a cheap boost hub and fit it, then at least you have a frame with matching hub, can you find a like for like replacement with the old hub and just swap it out?
Maybe buy a Hope non boost hub and buy the boost adapters for it at the same time so you have future compatibility with a boost frame? Or another manufacturer who offers boost adapters for non boost hubs or where you can get an MRP better boost adapter kit.
buy a Hope non boost hub and buy the boost adapters for it
This.
I'm not sure caliper alignment is necessarily an issue, Surly manage to do exactly this with their Gnot Boost system (Bridge Club for example runs either a 135 or 141x10 hub).
I'd be more concerned about the axle to be honest, get a longer one and it should probably be okay. I say probably, it was originally cut on a 142mm alignment so splaying it out will knock that off slightly. Dunno how that would stress the dropouts, on steel that's not so much of an issue, on aluminium? Your guess is as good as mine, especially if it's as slack as you say it already is.
As well as the axle, I'd be concerned about the side load on the frame bearings. I'd imagine there would be a fair bit of it at the chainstay pivot (not so much at the seat tube end.
IANA, err, materials engineer?