Go for it, I'd like to see. I have a 700c disc bike I've considered putting 26 on. I'm pretty sure it would work out crap on my bike.
In practice if you go on your tour, I think it would be more sensible to take a bike that feels good to ride, nothing bodged with dodgy ground clearance.
Good tyres last so long and you have such a huge choice of lightweight folding 700c tyres you could pack.
If you genuinely believe its going to get rough, take a mountain bike.
Go for it, I'd like to see. I have a 700c disc bike I've considered putting 26 on. I'm pretty sure it would work out crap on my bike.
In practice if you go on your tour, I think it would be more sensible to take a bike that feels good to ride, nothing bodged with dodgy ground clearance.
Good tyres last so long and you have such a huge choice of lightweight folding 700c tyres you could pack.
If you genuinely believe its going to get rough, take a mountain bike.