I'm 6'4" 280 and I get around just fine on an '82 Yamaha XT200 (same basic engine as the TW) and a '76 DT175C (ring ding). I wouldn't even think of using either one for a fully loaded long-distance ADV ride, but they are perfect to mosey around the hills and deserts.
76-dt175c-2.jpgsunrise_ready_to_roll.jpg
Though lately, I've been thinking about a Honda powered Rokon. With an engine upgrade to a GX200 I bet I could have a lot of fun with that.
Not street legal of course...
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Current: 76 E-250, bubble-top, self-contained|couple of old Yamaha enduros
Previous wheelers: 41 Willys|78 FJ40|78 Bronco|84 Bronco|74 Ramcharger|78 Ramcharger|79 D150 PowerWagon|77 D100|79 D400 dually, converted to 4WD, utility bed, 10' Lance|75 Westy|69 Scout, RHD|bunch of others|bunch of bikes|couple of boats|couple of motorhomes|blah blah|so what|not my idea|just doin' what I'm told|wank wank|this space for rent|candy is dandy|but liquor is quicker