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For some weird reasons that I'm struggling to understand I'd like to build myself a 79er... For this project I'd like to use hardtail frame and reduce the fork's travel/increase the wheel size.
I need to know a few things though: what's the axle to crown length of sagged/unsagged 120mm 650b fork and also s./uns. the height of the fork's crown above the ground in vertical line(either head angle or make and model would be very helpful as well!).
I believe there is at least one fellow bike tinkerer willing to help with the right stuff and some spare time in return for a good karma and perhaps a beer or four if we ever meet on the trails!
Your answers to the email in profile please or just below as there might be another weirdo in a few years down the line trying to do similar stuff...if we wont be living in a 34ers or 26.9834632628ers world by then. 🙂
Cheers!
forks and frames vary; what are you intending to buy ?
(what is s./uns ?)
79er ? 27.5 rear and 29 front ? If so, why not buy a 29inch fork ? (I'd have thought there might be a risk of tyre hitting fork brace if you put a 29 wheel in a 650 fork, as I think "reduced travel" means lower to start with rather than "doesn't use all it's potential compression")
Thanks for asking!
Yes, the 79er's a 27.5" rear wheel and 29" front.
I don't want to fit the 29" wheel in 650b fork, I just don't want to cock the frame's geometry too much by "adjusting" the height of the front end.
I thought that instead of 120mm 650b fork I could get away with 90-100mm 29er fork?
My thoughts are on the Genesis High Latitude LT, Stanton Switchback or NS Eccentric...
s./uns. - sorry - sagged/unsagged
Surely that would be a 97er?
Not so sure - 69er had rear 26" with front 29er wheel...anyway, whatever the name it's going to be a weird one!
Looking at the picture below I reckon I should be fine with fitting the 29er forks with 20mm less travel:
[img] 
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p.s.: 97er? I guess it depends from which way you peep at the bike 😉