1. Dismiss Notice
  2. Dismiss Notice
  3. Hey Facebook people... We've created a group for XS400.com members to connect. Check it out!
    Dismiss Notice
  4. Want an XS400.com t-shirt? Go to the store to order. Limited sizes and quantities available.
    Dismiss Notice

1981 rec/reg

Discussion in 'The Garage' started by MontanaXS, Sep 5, 2019.

  1. MontanaXS

    MontanaXS XS400 Member

    8
    0
    1
    US
    I see a lot of talk about the charging system on these and was curious. How do I tell what kind of rec/reg I have? From my understanding, there’s a solid state one and...an.. older one? If I have the solid state, would that support a LiPo battery? I wanna cafe my 81 xs400h (I think that’s the right model. Has drum brakes)
     
  2. BBS360

    BBS360 XS400 Guru Top Contributor

    It'll have a solid state regulator. Rectifiers are the same for all single-overhead cam years (black with fins).
    Looks like this:
    [​IMG]
     
  3. unleashedlive

    unleashedlive XS400 Enthusiast

    78
    8
    8
    Canada
    Piggy backing on this thread, but what is the correct replacement regulator for this? My '79 has this same reg and I think it's dead.

    VR125?
    VR291/R292?
    other?
     
  4. NewHavenMike

    NewHavenMike 1976 XS360C Top Contributor

    Im currently using a Antigravity 4 cell with my bike. I use an aftermarket car regulator that I had to wire myself.

    The problem is the older mechanical ones. The stock solid state regs are fine if they work. Its the newer technology batteries that cant take the variable charge rate.

    With that said, I started using this 4 cell battery this year, so I have no idea how long it will last. I have a volt gauge on my bike and lately thats been giving me high voltage readings, like around 14.8 at all times no matter if I have every light on or not. The tail light is LED and acts as a runner, brake, and tag light. Im keeping an eye on the battery, its gotta be overloading and greatly reducing lifespan.. I do not know yet.

    The regulator I use is the R292 from BWD, Borg Warner also makes the same one. I am not sure if it is compatible, or makes a difference if your bike came stock with a solid state reg. My 76 had a mechanical one so this was a nice upgrade for me.
     
  5. unleashedlive

    unleashedlive XS400 Enthusiast

    78
    8
    8
    Canada
    @BBS360 I'm getting a bit confused as it sounds like only '80+ had a solid regulator but my '79 has it. The R292 has 4 wires but my stock solid only has 3 like the VR125.

    I'm so confused.
     
  6. unleashedlive

    unleashedlive XS400 Enthusiast

    78
    8
    8
    Canada
    @NewHavenMike what wiring diagram did you follow for the 292?
     
  7. NewHavenMike

    NewHavenMike 1976 XS360C Top Contributor

    The yellow and orange wires are spliced together. Then green-green, and black-black
     

Share This Page