Riding folding bikes on gravel roads/canal paths

[rualexander]

I was pleasantly surprised at how well my Brompton handled on a pretty rough section of forest track recently

 

[jefmcg]

My mezzo (same wheel size as a brompton) happily managed 50 miles on this path - with my help :-) Stand marathon tyres.

 

[Bromptonphile]

Well, my thread was ignored in the other sub forum , hopefully someone here will be able to answer my question.
Will a folding bike handle rougher terrain?

Not very well, in my experience, assuming you mean a small-wheeled folder The smaller the wheels, the bumpier the ride, which is why folders usually have frame-suspension. I ride my Brompton on tow-paths, which are reasonably smooth, but even then, a big-wheeled bike is better.

Also, can't decide between a Raleigh Evo 7 and a Dahon Vitesse D8, the former is twice cheaper but the Stowaway from Raleigh has been getting positive reviews, so I'm wondering if I'm not overpaying for a Dahon.

Get a Brompton!