Just got my 69er together last friday and went out for a decent ride on Sunday. As usual I was carrying a spare tube but it was a 26″; anyone know if, in case of a puncture, you can stretch a 26 to fit 29 or would it be better to swap it for a 29 tube and squeeze it into a 26 if the back punctures? Don’t really want to carry two tubes if I can help it..

Cheers

get a 650b tube, maybe?

or a puncture repair kit…

Either.
Both will work fine.

26″ stretches to fit 29er…

29″ does not fit 26er…

29″ does not fit 26er…

I think you’ll find it will.

You might also find a front tube for an MX bike will fit in a 26er if it’s that or walk home. 😉

26″ tube will fit, just be very careful when fitting as its much easier to pinch the tube.

Cheers all, will stick with the 26 then. Puncture repair kit always included 😀

Just for info; (I searched for this sort of thing to no avail) you can fit a Smart Sam 29 x 2.1, with some room to spare, into a 425mm axle to crown Salsa Cromoto fork:

It works quite nicely…

Run my Trek 69er tubeless 🙂

29″ does not fit 26er…
I think you’ll find it will.
You might also find a front tube for an MX bike will fit in a 26er if it’s that or walk home.

I know which I’d rather be doing… 26″ tube into 29er is easy..

Run my Trek 69er tubeless

Need to try that one day but will have to let go of my luddite tendencies first