OK - I feel I should add a caution (which I should have done at outset) that this unit has never been tested on a Rocket - but had neither ever been tested on a Daytona (or for that matter any other bike beyond its DL1000A OEM Application) before I installed mine - I was running a Compufire prior to that with no issues personally, although I have seen reported failures of those.
Theoretically a Series unit just makes more sense from a technical perspective with regard to the stator's operation & reliability; unanswered as yet would be long term reliability of the Regulator itself.
For me the added incentive on installing this on a Rocket would be that stator has already shown it is a failure concern; that is then exacerbated by what is required to replace the stator on a Rocket; so if mine, I would want to mitigate that if a potential solution can lower that risk exists and my
opinion is the SH847 will do that.
The OEM current loads are virtually identical on a 955 Daytona (or 955 or 1050 Speed Triple) compared to a Rocket (there is nothing OEM on an R3 that draws any more current than those other models); the R3 generator however does have more
upside capacity with 37A available at 2K rpm, 41A at 6K, with the Daytona at 35A max (rpm not spec'd) That means the R3 has more upside capacity for accessory loads (extra lights etc)
Note however that with a 'std' bike running current load of say 18-20A, with the OEM shunt module, it is still pulling that max (up to 41A) out of the stator; changing the load (adding more lights etc) does not make the stator produce any more current, it simply passes more to the load and less through the shunt - but the stator current remains essentially the same.
Now let's compare this aspect of both bikes again - even with the same std load (no accessories) the R3 is having to generate more power than the Daytona stator EVEN THOUGH THE DELIVERED POWER TO THE BIKE IS THE SAME!! Therefor the R3 Stator is running hotter than the Daytona stator.
So what does that bigger capacity generator buy you? Absolutely nothing, because you are only using about half of it's generated power, with the other half being expended in the R/R
Now - with the Series R/R in both bikes, the generated current is going to be virtually identical; however there is more mass in the R3 stator, so it in fact will probably run relatively cooler than its counterpart (simplistic - a lot also depends on how much active cooling is being done by the oil). Now if additional loads are added, the respective generators will step and supply whatever extra current is demanded to the limit of its capability, with the R3 capable of slightly more.
Here's another interesting fact for you - since the stator is running at lower current, it actually consumes less HP!!! Yes, Really!
Here's another twist on that - turn off the headlights on the Shunt system - what does that do to the generated current? Nothing - the shunt takes that current in its place.
So it makes no difference either to the consumed engine HP in making that electrical power.
Now take the same scenario with the Series unit - you will cut the generated current from around 18A-20A, to 8-10A by turning off the lights - that will consume LESS generated HP from the engine.
Here are some thermograph images provided by one user that illustrate the difference it makes with a Shunt vs Series R/R
- this is on an Aprilia and the Series R/R is a Compufire (but the difference would be same with any Series type)
