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ruenjou

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Posts posted by ruenjou

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted

    38 minutes ago, 2and3cylinders said:

    Thanks.

    Please clarify / define "mechanical efforts". Do the OEM plugs fit the replacement unit?

    Does your photo show the permanent location of your unit?

     

    Mechanical efforts:

    1. Pulled up cables of the R/R from their stock locations and re-route them to exit to the left side of vehicle. They were tucked under several other cables in the battery tray.

    2. Fabricated a simple mount for SH847 using 1/2"x1/8" aluminum bar stock from homedepot.

    3. R/R is finally mounted using some nuts/bolts/standoffs.

    OEM plugs are plug-n-play and the photo shows how it's mounted permanently. The above mods can be fully restored to stock.

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted

    5 hours ago, 2and3cylinders said:

    So is the OEM FJ09 VRR mosfet and if so, which, shunt or series?   What exactly did you retrofit?  I've done several mosfet swaps on other bikes.

    good reads below

    6554b6be8c0d829a8bf63ae0c82cf121_link.pn Facts about shunt-based regulators

    I feel that in all the debate over burnt stators, etc..., that a lot of...

    6554b6be8c0d829a8bf63ae0c82cf121_link.pn Mosfet Regulator - How does a MOSFET regulator work?

    Mosfet Regulator - How does a MOSFET regulator work?

     

    Stock FJ09 R/R is MOSFET shunt style, Shindengen FH020AA which is also used in FJR1300, Super Tenere and many other bikes.

    Shindengen SH775 is a SCR series style and a drop-in replacement of FH020AA. However FH020AA is rated for 50A while SH775 is at 35A. In addition, FJ09 puts R/R in an undesirable location where there is very little air flow.

    I retrofit a Shindengen SH847 (SCR series 50A) into my FJ09 with some mechanical efforts. Electrically it's straightforward since  SH847 has identical connector pinout as FH020/SH775.

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted

    3 minutes ago, TTR Ignition said:

    Unless it's not. Yamaha used dry stators for the longest time (FZRs and YZFs at the very least). The early VRRs were weak by design (ground through the casing, no ground wire), but a failed stator was far more uncommon.

    Even with oil cooling, Triumph street triple, some Suzuki GSXers are known to fry their stator coils...

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted · Edited by ruenjou

    21 minutes ago, TTR Ignition said:

    Opening a charged coil in close proximity to two other coils can do bad things to those other coils, as well as to other components connected to them. cf 'ignition coil'

    Correct. However this can be mitigated with transient suppression diodes in series R/R. We called this inductive kick in the industry.

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted · Edited by ruenjou

    It's more efficient to use series R/R. However it's much easier and cheaper to design shunt R/R than series R/R.

    Also, shunt R/R has better high frequency response which works well with high RPM engines.

    To my knowledge, harley v-twins and Suzuki V-strom 1000 (2014+) come with series R/R in stock.

    Shunt R/R has been on motorcycles for >30 years and it works because the stator coil is oil cooled.

    My unscientific tests showed ~20 deg reduction of stator temps (170 vs 190F) when using series R/R.

    Don't laugh. This is my FJ09 fitted with a series R/R. Form follows function, LOL.

    IMG_6612.jpeg

    Electrical power: how much is available?

    in Tracer 900 GT Discussions

    Posted · Edited by ruenjou

    The stator open circuit voltage (no load) is >60VAC at 5000 rpm.

    With a shunt-style regulator, you will observe stator voltage ~14VAC in low or full loads since regulator shorts out some cycles of stator output to maintain 14VDC output.

    With a series-style regulator, the stator output is ~14VAC at maximum load. However at low loads, some cycles of ~60VAC (~5K rpm) can be observed at stator coil output since the regular "disconnects" the stator from load to maintain DC regulation and the stator coil is open circuit at that moment.

    FJ09/tracer uses shunt style regulator.

     

    • Thumbsup 1

    just gonna send it!

    in FJ-09 Tracer 900 Pics and Videos

    Posted · Edited by ruenjou

    Every roads in Quincy areas are beautiful. I only wanted to add that due to construction, there was a 3-4 miles section of unpaved Buck Lake road about 10 miles north of Oroville when I was there in July 2018. 

    You can create several loops out of 32/70/La Port/Buck Lake Roads!

    • Thanks 1

    Rear brake light wireing

    in Tracer 900 GT Discussions

    Posted

    33 minutes ago, skipperT said:

    Lovely diagram there, Ruenjou, however without showing which switch operates the brown and yellow wires, your pic needs further explanation for how you came to the conclusion that you did...

    -Skip

    Haha. 95 is the tail light connector. Yellow wire goes to the rear brake switch while brown wire goes to ignition switch. Black is ground... 

    • Thumbsup 1
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