I started a thread in the F800S/ST Discussion forum about my issues with the Electrosport voltage regulator/rectifier going out and that I had purchased a kit from RoadsterCycle for a series regulator retrofit. I decided to post this thread here as this is more of a modification.
Anyway, the kit came quickly and it just took me a while to get around to installing it. I purchased the SH847 model, which is larger than the SH775, has a higher load capacity, and is better suited to running at higher RPMs. Maybe not needed for the F800-series but I thought I'd be the guinea pig. The SH775 is probably fine and would be slightly easier to fit. The kit comes with a new regulator, stator input connector that you need to splice to the one on your old regulator, and an output harness to the battery, pre-wired with a circuit breaker (this replaces the other cylindrical connection on the OEM regulator).
The kit was not inexpensive but it was worth the peace of mind for me to get a new regulator that I knew worked, and was nice to have the additional wiring and such. If you're more experienced with electrical work you could certainly put your own package together for less money.
I also purchased a mounting bracket from RoadsterCycle as the SH847 is larger than the SH775 and the OEM regulator. Again, you could make your own if you felt like it, but it was $20 so whatever.
I've attached some pictures showing my splice of the stator connections, a size comparison between the regulators, and the install of the components on my bike. The kit came with crimp-on and heat-shrinkable connectors for the stator wires so it was extremely easy to put together. No soldering or any special equipment required besides a $10 wire stripper/crimper (and a hair dryer to heat-shrink the connectors).
I routed the power cable to the battery on the left side of the bike sort of under the air snorkel and through the frame to where the existing connectors are. You can see in the pictures how I oriented the mounting bracket, it does cause the regulator to protrude slightly farther than the standard one but I couldn't feel it when sitting on the bike. If I was doing this again I would cut the stator harness shorter, there's a lot of wire (and the much larger regulator connectors) under there and I'm not sure I'm comfortable with that being so close to the engine. A zip tie or two would probably fix this for me.
When I finished connecting everything the bike fired right up and quickly settled to a steady 14.5V per my voltmeter. Maybe a little high, but still acceptable. I did not take it for a test ride as it's late Sunday night and I had a couple glasses of wine while doing this project [
]. Definitely recommend the RoadsterCycle kit if anyone's looking to do the same, they also sell just the wiring and connectors if you want to source your own regulator. Easy to do for anyone with basic maintenance skills, it took me maybe an hour and a half total to complete this, no special knowledge or tools required besides that wire crimper.
Anyway, the kit came quickly and it just took me a while to get around to installing it. I purchased the SH847 model, which is larger than the SH775, has a higher load capacity, and is better suited to running at higher RPMs. Maybe not needed for the F800-series but I thought I'd be the guinea pig. The SH775 is probably fine and would be slightly easier to fit. The kit comes with a new regulator, stator input connector that you need to splice to the one on your old regulator, and an output harness to the battery, pre-wired with a circuit breaker (this replaces the other cylindrical connection on the OEM regulator).
The kit was not inexpensive but it was worth the peace of mind for me to get a new regulator that I knew worked, and was nice to have the additional wiring and such. If you're more experienced with electrical work you could certainly put your own package together for less money.
I also purchased a mounting bracket from RoadsterCycle as the SH847 is larger than the SH775 and the OEM regulator. Again, you could make your own if you felt like it, but it was $20 so whatever.
I've attached some pictures showing my splice of the stator connections, a size comparison between the regulators, and the install of the components on my bike. The kit came with crimp-on and heat-shrinkable connectors for the stator wires so it was extremely easy to put together. No soldering or any special equipment required besides a $10 wire stripper/crimper (and a hair dryer to heat-shrink the connectors).
I routed the power cable to the battery on the left side of the bike sort of under the air snorkel and through the frame to where the existing connectors are. You can see in the pictures how I oriented the mounting bracket, it does cause the regulator to protrude slightly farther than the standard one but I couldn't feel it when sitting on the bike. If I was doing this again I would cut the stator harness shorter, there's a lot of wire (and the much larger regulator connectors) under there and I'm not sure I'm comfortable with that being so close to the engine. A zip tie or two would probably fix this for me.
When I finished connecting everything the bike fired right up and quickly settled to a steady 14.5V per my voltmeter. Maybe a little high, but still acceptable. I did not take it for a test ride as it's late Sunday night and I had a couple glasses of wine while doing this project [
]. Definitely recommend the RoadsterCycle kit if anyone's looking to do the same, they also sell just the wiring and connectors if you want to source your own regulator. Easy to do for anyone with basic maintenance skills, it took me maybe an hour and a half total to complete this, no special knowledge or tools required besides that wire crimper.
