technically the grid is a 18 and over site, although they let a few young guys in if they act mature enough (some of the things that go on in this forum would never make it on the grid, too much blah blah blah gets posted with useless posts here) Not dissing chitownRC, just stating facts.

www.unlimitedengineering.com (supermaxx)
www.crispycrittershobbyshop.com (hobby shop in NJ)
www.leisurehoursraceway.com (LHR racing forum)
s-grid (no bull strait up bulletin board)
www.showmerc.com (midwest board)
www.rcfiles.com (texas board)

+ others