with regard to your earlier question:- Like you, I removed the control box and pod and completely rewired the C5 - my set up utilises the standard 12v power button on the LH handlebar, but I have fitted a second a button on the RH handlebar - when you press this while still pressing the LH one, 3 relays connect the motor in series with the 2 batteries, giving 24 volt performance - just pressing the LH button gives 12v from the 2 batteries in parallel - this allows me to run 12v most of the time, with the option of a boost for higher speed or hill climbing - using it in this way also helps to keep the motor temp down.
I retained the old temperature sensor, and connected it directly to a small digital thermometer (ebay item 150730639121) - I actually bought 2 of these thermometers, connected one to the motor temp sensor and left the other one as standard, and then compared the temperature readings on both the standard and c5 temp sensor one - the readings were exactly the same, more by luck than design - even if there was a slight difference this would still give you a very good indication as to how hot your motor is running.
I have the LCD temp display and a digital voltmeter fitted into my custom built dash which sits between the centre console and the front panel which makes the panel much more solid and less floppy. I made my own fan shroud from sheet aluminium to accommodate the temp sensor, and I have a switch on the dash to switch the fan on and off - I currently have to do this manually, although I really should fit a thermostat to do this.
If you are interested I could send you some details of how the relays are configured, although if you just want to run 24v then this would be unnecessary - if you want to see some pics there are some on my earlier post and in the gallery, I find that on 12v power I can pedal comfortably when in 3rd gear on my sturmey 3 spd hub to assist the motor, when on 24v power it's rather more difficult to pedal fast enough. Hope this explanation is useful, if you want any more info pls feel free to ask, I do think your restoration looks amazing and can't wait for the brake mods you pioneered,
posted on: 29/10/2013 22:35:19