This project was developed on the basis of upgrading the first version of our Solar Trike. To implement the second configuration, the same fundamental concepts have also been followed : again, a FWD 3-wheel was built, being in general smaller and lighter than this of the first configuration. Towards this aim, a totally new frame has been designed and constructed, by using 1/2" aluminum tube. It is worth mentioning that no commercially available parts have been used for this frame. Rather than using a saddle, a specifically designed and made leather seat has been implemented to provide some comfort. The selected Hub Motor was a Golden Motor © 24V/500W one, mounted in the front wheel and supported by two 12V/18Ah batteries. A significant innovation presented here was the rear suspension system, consisted of two stainless-steel independent swing-arms, hinged by a specifically made axle and controlled by shock-absorbers. This system provides also suspension to PVs, thus preventing potential damages due to non-smooth riding. To obtain such an independent rear suspension, a rear axle has not been used, thus leading to critical modifications compared with the first configuration: vehicle become only motor driven, without pedals, chain and gearbox. The electrical circuit integrated here was the same as for the first configuration, as well as the breaking system.

Characteristics

• Max. Speed : ~ 30 km/h
• Range (motor only): ~32 km (urban), ~40 km (highway)
• Brakes : electrical (front), 2X disk brakes (rear)
• Motor power : 500 W @ 24 V
• PV : 90 W @ 36V
• Extra features : reverse gear, double check of the available energy