Good morning, this C5 is unmodified, it has the original engine and controller, you can imagine the effort of riding with the trailer, two school bags and my twins, of course (about 80 kg all)
![Tongue :P](https://c5alive.co.uk/forum/Smileys/default/tongue.gif)
. In a flat road you can go even without push the button, only pedalling, but if the road begins to climb , even a minimum, power is short and you begin to search the auxiliary rockets button
![Grin ;D](https://c5alive.co.uk/forum/Smileys/default/grin.gif)
. Anyway, this car´s going to stay unmodified. I want to keep it in this way, as example how the car was made, this unit is reserved to my old son, actually twelve years old, to go to school and beginning to learn how the mobility must be, with side panels for cold weather. Other thing are the other two C5´s. I´m working in new 24 volts motors and controllers. I don´t want to use the original motor because off the design, they have a very big resistivity with heavy loads, and as I´ve seen sometimes, the controller box can explode in flames. I´m going to use a 24 v 500 watts brushless motor, with a 24 volts 30 amps controller. It´s great motor and drain less than half amps from battery than polimotor unit of C5 and it have double power. I have mounted in the C5 a regulable solenoid that I use as main switch and security protection to prevent risk of fire. It has programmed to switch it off at 100 amps of current and yesterday it cut several times the power when I ride with full load. That never happened with the 24 volts motor, mounted in my tandem bike, with three children, the trailer, aditional load and a hilly road, it´s a wild and hard motor, it have the same diameter than Polimotor but is three times shorter, so I´ve made a pack with the motor and a refrigeration fan, put into a steel cylinder and adjusted in the original motor mount of the C5, the whole piece have identical measures than Polimotor engine and use the original transmision belt to wheel drive.
I hope to work in the cars soon, I´m building a new workshop last six months and I´m almost finishing ( I hope so), so I think cars can be in test mode next month, I´ll post all the news ASAP.
Thanks for all the opinions and sorry for this heavy post, too much to read for a saturday morning
![Cheesy :D](https://c5alive.co.uk/forum/Smileys/default/cheesy.gif)
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Regards, Rafael