20" wheels for the front and a 26" in the rear. A "mid" drive was added, (just behind the seat) giving it some super granny gears along with the extra high gears for down hill fun. 3 sprockets on the crank, with 5 on the mid drive ending with 7 on the rear wheel.
Caliper brakes on all wheels. The frame is 1 ¼" square tube. King pins are recycled bicycle head tubes. The seat frame is ¾ EMT with a homemade mesh cover.
When told that the trike on the bench was for him, He let me know immediately that he wanted to motorize it! We talked some about what he thought he would like for an engine and what his expectations and needs were. I tried to talk him into going with the Harbor Freight style engine (for cost savings) but he was adamant about using a Honda. His experience as a maintenance person told him the Honda would probably perform best for him.
I wanted to keep it as simple and inexpensive to maintain as possible. Not only from an engineering point of view (and maintenance), but from an economical point of view also. This trike should give him stability on snow and ice that he could never get on his 2 wheel bike.
Paul provided the GXH50 Honda. I provided the Drive components. At the engine is a 1 ¾" pulley to a 6" pulley on the jackshaft, then it's a 10 tooth to a 60 tooth on the rear wheel which gives it around a 20 to 1 reduction. 2 quick pedals and he can dump the clutch and he's off.
Yerf Dog parts from ebay provided most of what was needed for the drive. Years of experience provided me with the design. After changing the output shaft to a shorter one, all that was needed was to install a tensioner. A cable controlled clutch seemed like the best fit for this build. An adjustment point for the cable was added along with the lever for the tensioner, simple and inexpensive! (under $100 bucks)
Paul already has plans to add a "radio flyer" wagon stake bed (no wheels), behind the seat, so it will act as a pickup truck. Asked about what color he is planning on, he says he is undecided as yet. More pictures as he progresses.
Cat's, Dad and Cat too!
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