Joined: Aug 2005
Posts: 1,319
Likes: 0
From: Vancouver, Washington and Ocean Shores, Washington, USA
Bikes: 2 - 2007 Custom Bike Fridays, 2 - 2009 Bike Friday Pocket 8's, Gravity 29'er SS, 2 - 8-spd Windsor City Bikes, 1973 Raleigh 20 & a 1964 Schwinn Tiger
As former owner of two D7's, I agree - not enough gears for typical U.S. National Park which will have some hills - or more likely, many hills. Also, a 10 yr old may be too small to ride the D7 with it's "Biologic II" handle bar configuration. It's quite a stretch.
Agree, 24-speed Mtn Bikes would be better. They will likely be less expensive than the Dahon's, and have suspension, too.