Does anyone happen to know what the output is from the generator (blue tank model if it makes any difference)?
Got the wife a heated jacket for Xmas and wondered if the TTR could power it so she can commute on it instead if her BMW which I have in many pieces at present! It pulls 77W apparently.
Looking through the owners manual it's stated as 13.5A, 14V @ 5000rpm, which is 189 watts. The lights are 5W rear, 35W front and intermittently another 42W on indicators, leaving about 100W 'spare' assuming negligible requirements for ECU, ignition and dash lights so I think I'll fit it and see how it goes. Might tell the missus not to switch it on until the engines running though!
Anything thats running all the time like the lights I would count but the indicators Id ignore, I know they take current but they arent "on" constant so that current isnt a constant draw on the system.
based on the above you should be ok as long as you don't have extended periods sitting at idle ,
there is a way to minimise the effect of high loads at idle that I have used over the years ( I was an auto elect for 14 years in a past life ) ,U can use a relay with the switch circuit earthed through the stop light wire (the wire after the switch ) so when the brakes are applied the relay interrupts the power supply to the Load in this case the heated jacket , EG while sitting at a RED light with the brake on the jacket wouldn't be drawing any power once you release the brake head off is all toasty again . Not familiar with really cold weather but may still be effective . with the intermittent powering of the jacket the average power usage over a trip is reduced considerably .
id do a diagram for you but not very good with computer thingos .
-- Edited by ttboof on Tuesday 7th of January 2014 08:40:12 AM
Thanks ttboof, that's a great idea I'd not thought of using the brake switch to trigger a disconnection. I've wired it up directly for now and it seems to power it fine even at idle but I don't know how much is generator and how much is battery at those lower revs.
I'll see how it goes, but I like this suggestion if I need to reduce its on-time.