Page 7 of 9 FirstFirst ... 56789 LastLast
Results 61 to 70 of 89
  1. #61
    This is what I ended up doing to mine hooking it up to my open loop cooling system. Doing this it keeps the regulator from overheating (not sure why it does) and continues to charge my ski and run normally.. My harness looks fine and I’m running the 2021 new style stator that goes straight to the regulator so I’m not sure why but it will charge for like 20 30 min get hot then stope charging.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	62F5B60B-F4DA-4ACF-A5FC-0E7151A83ADC.jpg 
Views:	30 
Size:	54.2 KB 
ID:	483701  

  2. #62
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canadia
    Posts
    47,491
    +1
    2,854
    Quote Originally Posted by whatnissan View Post
    Ö the regulator Ö it will charge for like 20-30 min get hot, then stop charging.
    Which specific voltage regulator are you using?

    Which battery type and capacity? AGM?

    How old is the battery?

  3. #63
    It’s a new battery less than a year old it’s the 2010 style battery so it’s bigger agm. I’m using the stock regulator. It all seemed to charge and work well this weekend.

  4. #64
    Quote Originally Posted by whatnissan View Post
    It’s a new battery less than a year old it’s the 2010 style battery so it’s bigger agm. I’m using the stock regulator. It all seemed to charge and work well this weekend.
    I was thinking the same , I think that the key is to go with AGM battery .

  5. #65
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canadia
    Posts
    47,491
    +1
    2,854
    Quote Originally Posted by whatnissan View Post
    Ö mine hooking it up to my open loop cooling system. Doing this it keeps the regulator from overheating (not sure why it does) and continues to charge my ski and run normally..

    My harness looks fine and Iím running the 2021 new style stator that goes straight to the regulator so Iím not sure why but it will charge for like 20 30 min get hot then stop charging.
    Quote Originally Posted by whatnissan View Post
    Itís a new battery, less than a year old.
    itís the 2010 style battery so itís bigger AGM.

    Iím using the stock regulator.

    It all seemed to charge and work well this weekend.
    So your stock SH775 rectifier module has water cooling, and the AGM battery voltage stays close to 14 volts with engine running, even after riding for more than 30 minutes, correct?

    AGM battery tends to absorb more amps continuously from the charging system until the battery reaches very close to fully charged.

    It makes sense that the stock SH775 SCR type series rectifier would get quite warm while it is rapidly charging the AGM battery. The rectifierís internal self-heating should abate once the AGM battery gets closer to fully charged, when the amps flowing into the AGM battery reduces.

  6. #66
    If I’m idling I see 13.2 on the dash but if I’m riding it’s like 13.6-13.8 or so

  7. #67
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canadia
    Posts
    47,491
    +1
    2,854
    Quote Originally Posted by whatnissan View Post
    Ö riding itís like 13.6-13.8 or so
    If you compare the dash reading with a multimeter reading directly at the battery, you may find the dash reading is offset from actual battery voltage.

  8. #68
    1tommygunner1927's Avatar
    Join Date
    Apr 2007
    Location
    Houston, Texas
    Posts
    9,778
    +1
    2,924
    This thread needs to be a sticky! Very useful info.

  9. #69

    Join Date
    Dec 2022
    Posts
    11
    Quote Originally Posted by K447 View Post
    Shindengen SH847 appears to be a series type regulator.
    I suspect (at the moment) that the SH847 is using SCR semiconductors (so not the cooler running mosfet transistors).
    Let me make sure I understand. A FH020 will cause the stator to run hotter, but the regulator itself will run cooler than the SH847 (presumably because the SH847 is non-MOSFET).

    I am hoping I can get to the bottom of this. This threat is one of the best I have seen on this topic. I actually don't have a jet ski. I have a 2016 Triumph Street Twin. The stock FH020 is located on the fork, but I would like to relocate it to behind the radiator where it is much hotter and there is much less airflow. Apparently Triumph relocated them to this location in later model years I think because movement of the fork was causing too much stress on the wiring in the stock location. However, I am a little hesitant because of the heat issue. I was considering getting an SH847, but it sounds like this may not be a good idea for my purposes?

  10. #70
    TimeBandit's Avatar
    Join Date
    Jun 2016
    Location
    Tampa Bay
    Posts
    1,374
    +1
    323
    When comparing the two common types of shunt regulator designs (aka SCR -vs- MOSFET), both still do a good job at shunting Power by means of 100% current flowing (circulating) back into the next stator windings, when energized, complements/attracts the rotors approaching magnetism poles - hence the shunting "unloads" the rotor. This works because shunting is a timed/phased short in rotational successions, verses fully shorting the entire stator at once.
    The difference, is that the MOSFET type is a more pure 100% flow than the SCR type because SCR's have a bit of internal resistance within them, resistance = heat. MOSFET having super-low resistance is why the regulator housing the MOSFETs runs cooler than SCRs.

    As for the stator running hotter with MOSFETs, I cannot buy into that notion. With the regulator offering less resistance, the stator and rotor are seeing less "work" in heating up the regulator.


Page 7 of 9 FirstFirst ... 56789 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 4
    Last Post: 05-02-2019, 10:52 AM
  2. FS 42lb OEM Injectors & Riva Pro Series 50lb
    By fastrxp215 in forum Sea Doo Classifieds
    Replies: 6
    Last Post: 12-29-2018, 03:34 PM
  3. SOLD R&D Yamaha FZR/ FZS Pro Series Ride Plate
    By fastrxp215 in forum Yamaha Classifieds
    Replies: 6
    Last Post: 02-24-2017, 02:11 PM
  4. F12x Keeps burning up Rectifier/Regulators ??
    By ktyamaha36 in forum Honda Performance
    Replies: 3
    Last Post: 06-04-2013, 05:42 AM
  5. rectifier differences? 98 GTI is smaller??
    By ccstamoulis in forum 2-Stroke Performance
    Replies: 1
    Last Post: 08-14-2010, 07:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •