- I searched the forum and did not find the definitive answer I was looking for.
- I was once a regular in this forum for years, (hello to all the OG's), I am currently riding my 5th WR4XXf and like to think I know my around them to a certain degree.
- My bike is an 07' WR450 and has the Trail Tech 100W Stator & R/R kit installed. This is the 2nd such kit installed, the first one lasted about 4 years running HID and stock lighting systems. When that kit failed I had the ground float mod done on the stock stator and ran the BD R/R with success for about a year until this last spring when once again the battery went dead out on the trail and the bike would not even kick start. I condemned the stator and/or regulator without really testing either component and just ordered a new Trail Tech 100W kit....
- In both cases mentioned above where the charging system failed, the battery went totally dead and I could not even kick start the bike.
- I have a Ballistic battery.... (It's a very bad ass battery that will take and hold a charge just fine).
- The bike, with the battery connected, currently runs and starts great.
To my question - The bike has been sitting since end of April. I charged the battery and installed the new Trail Tech kit this past weekend. The bike fired up and ran great, my DC charging voltage was in spec at various RPM's. SO.........My limited pea brain logic tells me that I should disconnect the positive battery cable and if the bike continues to run then everything is good right? Well.... apparently not. The lights and motor die so I unplug the head light, hook the battery back up and re-start the bike. This time when I unhook the battery the bike runs, (w/o headlight connected), but is sputtering and the dash is flickering as well as the little red LED on the ignition switch.
To my question - Does the CDI need the DC voltage stored in the battery for the bike to run properly?
More background -
- I went through Trail Tech's troubleshooting guide and everything from the Stator and R/R checkout good, (Stator A/C output, Stator resistance, charging voltage, etc....).
- I called Trail Tech tech support today and asked point blank, "Does the bike need a battery to run properly?" and his reply was, "well...... not really, it shouldn't" and then he gave me a resistance spec on the ignition output from the stator. I got home tonight and it is in spec (290 ohms +/- 10 Ohms)
- I checked the DC voltage at the ignition output of the stator (Red and White wires) and both wires red less than 1 volt DC to ground but then my pea brain logic kikcs in again and I am thinking that this does not pass through the rectifier so how can it be DC voltage?....
- I have searched the WR forums and I am reading differing opinions as to whether the bike needs a battery to run correctly. Some say that you cannot simply eliminate the battery without putting some type of capacitor in the DC circuit?
- I discharged the battery to 9.5 volts using a light as the load... the bike would understandably not e-start but it kick started right up, ran great and the battery charged up in no time at all.
Thanks in advance!