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1: Catrike Dash from rear
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1: Catrike Dash from rear
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2: Catrike Dash from front
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3: Catrike Dash with running gear removed
The first stage is to remove most of the running gear. There are other ways to get to this stage, but removing the pedals, chain, derailleur, rear wheel, seat, etc. is cheaper than building a quality frame. You are left with the front wheels, disk brakes and a good steering geometry. The removed components weigh 15 pounds (6.8 kg) leaving 17 pounds (7.7 kg). Adding back in a rear wheel with hub motor is an extra 7.1 pounds (3.2 kg). The chassis base weight is 24.1 lb (11 kg). Wheelbase is 31 inches (79 cm) and diameter of wheels with tires is 17 in (43 cm). Track is 28 in (71 cm).
The PedalGreen hub motor wheel is designed as a front wheel. Thus the rear dropouts are too wide for it by 1.5 in (35 mm). This requires building an adapter to mount the wheel.
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4: The dropouts are 35 mm too wide for the hub motor.
I made the adapters below from a piece of scrap aluminum 0.4 in (1 cm) thick. Not pretty, but it works. Only the opened holes and the holes on the right are needed. The other two holes were in the wrong position. The adapters are bolted to the rear dropouts and shorten the wheelbase by 2.5 in (6.3 cm). The original 20 in (40-406) wheel was replaced by a 16 in (47-305) wheel.
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5: Wheel mount adapters.
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6: Hub motor mounted with adapters.
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7: Elcano base chassis