Create a gritty, vintage-style t-shirt design featuring a hand-drawn sketch of a vintage Triumph motorcycle, focusing on intricate engine details that highlight its classic character. The motorcycle should be the focal point of the design, showcasing its vintage essence with a rugged and adventurous vibe. Above the graphic, place the text “Dhaka Riders” in an angled, distressed grunge font that complements the overall aesthetic. Utilize a muted color palette of grey, maroon, and burnt orange to create an old-school look that resonates with motorcycle enthusiasts. The background should feature a textured paper effect, adding depth without distracting from the motorcycle. The design should evoke a sense of nostalgia and ruggedness, appealing to those who appreciate the timeless charm of classic motorcycles.