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    #16
    Ok, back at it. I got the new Caltric stator installed and checked it out. The leg to leg tests were all showing 70-72v which is good. The leg to ground test showed 0.00 on all three legs.

    Problem is while running it yesterday I could see vom readings in the 14.0 range IF, I had the headlight off. When turning the headlight on the voltages would drop to low 13.0 range.

    So I charged the battery up to full and these are the results of the quick test:

    key off 12.8
    key on w/headlight on 12.1
    @1500 rpm 12.17
    @2500 rpm 12.17
    @5000 rpm 12.18
    key off 12.6

    This was followed by testing with the headlight off:
    @1500 12.34
    @2500 12.35
    @5000 12.36
    key off 12.7

    This surely is pointing to a bad battery isn't it? I have read where a bad battery can produce all sorts of wonky stuff.

    Please tell me if I am on the right track and I will go purchase a new battery.

    TIA
    Larry

    '79 GS 1000E
    '93 Honda ST 1100 SOLD-- now residing in Arizona.
    '18 Triumph Tiger 800 (gone too soon)
    '19 Triumph Tiger 800 Christmas 2018 to me from me.
    '01 BMW R1100RL project purchased from a friend.

    Comment


      #17
      You should be staring all of this with a new or known-good battery. That said - Are you still using the original Reg/Rec? It looks like your Stator is putting out good voltage but your R/R is doing absolutely nothing with it.
      Rich
      1982 GS 750TZ
      2015 Triumph Tiger 1200

      BikeCliff's / Charging System Sorted / Posting Pics
      Destroy-Rebuild 750T/ Destroy-Rebuild part deux

      Comment


        #18
        Originally posted by Rich82GS750TZ View Post
        You should be staring all of this with a new or known-good battery. That said - Are you still using the original Reg/Rec? It looks like your Stator is putting out good voltage but your R/R is doing absolutely nothing with it.
        I'm using what I thought was a good battery. It is a Motobatt AGM purchased in May 2020 but has been used very very little.

        No, not using the original R/R. Am using a SH 775 that I just put on last month.

        And just for what it's worth, I questioned my own wiring install of the SH 775.
        Larry

        '79 GS 1000E
        '93 Honda ST 1100 SOLD-- now residing in Arizona.
        '18 Triumph Tiger 800 (gone too soon)
        '19 Triumph Tiger 800 Christmas 2018 to me from me.
        '01 BMW R1100RL project purchased from a friend.

        Comment


          #19
          On the 1st two steps of the quick test when my voltage dropped from 12.8 to 12.1, wasn't that enough evidence that the battery is bad and should be replaced?
          Larry

          '79 GS 1000E
          '93 Honda ST 1100 SOLD-- now residing in Arizona.
          '18 Triumph Tiger 800 (gone too soon)
          '19 Triumph Tiger 800 Christmas 2018 to me from me.
          '01 BMW R1100RL project purchased from a friend.

          Comment


            #20
            Copied/pasted from one of Ed Ness's many posts on the topic.

            Check this link for an install diagram...https://www.thegsresources.com/_foru...nstall-Diagram

            Most forum members purchase the Triumph jumper harness (PN T2500676) and adapt that to fit the bike wiring. There are other aftermarket connectors as well.

            The cheapest option is to use female spade terminals on some loose wire and attach those to the R/R directly. To do the job right you should then fill the cavity in the R/R and pot the wires with low acid electrical safe RTV.

            SH775 Install by nessism, on Flickr

            P1040151 by nessism, on Flickr
            Ed


            As for your quick-test numbers, I can only comment on what I saw after correctly installing new (used) SH775 and new stator on my bike. Pretty much in line with your starting numbers w/ headlight on.(I can't turn mine off)

            1) Key Off - 12.85 VDC
            2) Key On - 12.3 VDC

            I don't believe your battery is bad, but you may want another opinion. You could take it to a local Auto parts place and have it load-tested.


            Last edited by Rich82GS750TZ; 06-01-2021, 02:23 PM.
            Rich
            1982 GS 750TZ
            2015 Triumph Tiger 1200

            BikeCliff's / Charging System Sorted / Posting Pics
            Destroy-Rebuild 750T/ Destroy-Rebuild part deux

            Comment


              #21
              I used the Triumph harness and I thought I had it right but ???????
              Larry

              '79 GS 1000E
              '93 Honda ST 1100 SOLD-- now residing in Arizona.
              '18 Triumph Tiger 800 (gone too soon)
              '19 Triumph Tiger 800 Christmas 2018 to me from me.
              '01 BMW R1100RL project purchased from a friend.

              Comment


                #22
                Originally posted by alke46 View Post
                Ok, back at it. I got the new Caltric stator installed and checked it out. The leg to leg tests were all showing 70-72v which is good. The leg to ground test showed 0.00 on all three legs.

                Problem is while running it yesterday I could see vom readings in the 14.0 range IF, I had the headlight off. When turning the headlight on the voltages would drop to low 13.0 range.

                So I charged the battery up to full and these are the results of the quick test:

                key off 12.8
                key on w/headlight on 12.1
                @1500 rpm 12.17
                @2500 rpm 12.17
                @5000 rpm 12.18
                key off 12.6

                This was followed by testing with the headlight off:
                @1500 12.34
                @2500 12.35
                @5000 12.36
                key off 12.7

                This surely is pointing to a bad battery isn't it? I have read where a bad battery can produce all sorts of wonky stuff.

                Please tell me if I am on the right track and I will go purchase a new battery.

                TIA
                Do you have another battery? a half-decent car battery will do in place-of.
                If the bike is running, and only showing " @5000 12.36" your battery would have to be a short circuit to cause this reading. USUALLY, even with a bad battery, charging voltage is maintained, it just isn't "retained" in a bad battery.

                As said by Rich~, your R/R is suspect. Check the connections, particularly where it is grounded. You have a meter, so you can at least set it to ohms lowest scale ,touch probes to BAT NEG and the place grounded to ,and it should read between 0 and 1.2 (most meters set to lowest ohms scale show "1.2" or near when you touch the probes together This value is subtracted from any reading to give you an accurate value of ohms. It's a way of "zeroing the meter")

                Where stator and regulator are both good, Your bike will actually run at the regulated voltage (14+) WITHOUT a battery. But don't do it. (a "symptom" where this is actually happening is a pulsing headlamp)
                Last edited by Gorminrider; 06-02-2021, 10:30 AM.

                Comment


                  #23
                  Originally posted by Gorminrider View Post
                  Do you have another battery? a half-decent car battery will do in place-of.
                  If the bike is running, and only showing " @5000 12.36" your battery would have to be a short circuit to cause this reading. USUALLY, even with a bad battery, charging voltage is maintained, it just isn't "retained" in a bad battery.

                  As said by Rich~, your R/R is suspect. Check the connections, particularly where it is grounded. You have a meter, so you can at least set it to ohms lowest scale ,touch probes to BAT NEG and the place grounded to ,and it should read between 0 and 1.2 (most meters set to lowest ohms scale show "1.2" or near when you touch the probes together This value is subtracted from any reading to give you an accurate value of ohms. It's a way of "zeroing the meter")

                  Where stator and regulator are both good, Your bike will actually run at the regulated voltage (14+) WITHOUT a battery. But don't do it. (a "symptom" where this is actually happening is a pulsing headlamp)
                  Today I have found a connection problem and corrected it--I think.
                  Now I just checked it again and with the headlight "OFF", I get better numbers. I'm seeing 13.1 at 1500rpm. 14.4 at 2500 and 14.4 at 5000 rpms.

                  Turn the headlight back on and those numbers drop to 12.5---13.1---and 13.4 respectively.

                  I can retry this same test tonight after the wife gets home as the battery in her car is pretty new.

                  Thanks for your advice.
                  Larry

                  '79 GS 1000E
                  '93 Honda ST 1100 SOLD-- now residing in Arizona.
                  '18 Triumph Tiger 800 (gone too soon)
                  '19 Triumph Tiger 800 Christmas 2018 to me from me.
                  '01 BMW R1100RL project purchased from a friend.

                  Comment


                    #24
                    You’re charging now, which is great. But the headlight-on numbers aren’t exactly stellar. Curious what difference you might see if you installed an LED headlight like a Trucklite. Steve may have done some tests before and after with one of the bikes in his stable. I did not.
                    Rich
                    1982 GS 750TZ
                    2015 Triumph Tiger 1200

                    BikeCliff's / Charging System Sorted / Posting Pics
                    Destroy-Rebuild 750T/ Destroy-Rebuild part deux

                    Comment


                      #25
                      Originally posted by Rich82GS750TZ View Post
                      You’re charging now, which is great. But the headlight-on numbers aren’t exactly stellar. Curious what difference you might see if you installed an LED headlight like a Trucklite. Steve may have done some tests before and after with one of the bikes in his stable. I did not.
                      I agree, it sure seems the headlight is overwhelming the charging system but did this just start? I don't know.
                      Larry

                      '79 GS 1000E
                      '93 Honda ST 1100 SOLD-- now residing in Arizona.
                      '18 Triumph Tiger 800 (gone too soon)
                      '19 Triumph Tiger 800 Christmas 2018 to me from me.
                      '01 BMW R1100RL project purchased from a friend.

                      Comment


                        #26
                        When I get ready to test with a car battery, should I just jumper it or would it be better to remove the bike battery to isolate it from the car battery?

                        And don't worry, I do know not to have the car running when jumping ��.
                        Larry

                        '79 GS 1000E
                        '93 Honda ST 1100 SOLD-- now residing in Arizona.
                        '18 Triumph Tiger 800 (gone too soon)
                        '19 Triumph Tiger 800 Christmas 2018 to me from me.
                        '01 BMW R1100RL project purchased from a friend.

                        Comment


                          #27
                          Sorry, I have now experience or opinion using a car battery for any kind of testing on the bike.
                          Rich
                          1982 GS 750TZ
                          2015 Triumph Tiger 1200

                          BikeCliff's / Charging System Sorted / Posting Pics
                          Destroy-Rebuild 750T/ Destroy-Rebuild part deux

                          Comment


                            #28
                            Originally posted by alke46 View Post
                            When I get ready to test with a car battery, should I just jumper it or would it be better to remove the bike battery to isolate it from the car battery?

                            And don't worry, I do know not to have the car running when jumping ��.
                            Larry, for what it's worth, I jumped my Yamaha Venture Royale using the truck, not running of course. Bike battery dead but still in place. It started but ran rough, even staying connectedto the truck. Replaced the bike's battery and it started easier and ran smoother.
                            Roger

                            Current rides
                            1983 GS 850G
                            2003 FJR 1300A
                            Gone but not forgotten 1985 Rebel 250, 1991 XT225, 2004 KLR650, 1981 GS850G, 1982 GS1100GL, 2002 DL1000, 2005 KLR650, 2003 KLX400

                            Comment


                              #29
                              Larry,
                              I had a similar problem before when testing the output voltage across the battery + & - posts and later found that I had a defective Hi/Lo beam dimmer switch on my left handlebar switch which caused both Hi and Lo beams to be lit,both at the same time.This caused more draw from my system and made it look like the battery/charging system was weak.The little spring which returned the dimmer switch to the center position was gone and the contacts were touching both beams.

                              Comment


                                #30
                                Originally posted by grcamna2 View Post
                                Larry,
                                I had a similar problem before when testing the output voltage across the battery + & - posts and later found that I had a defective Hi/Lo beam dimmer switch on my left handlebar switch which caused both Hi and Lo beams to be lit,both at the same time.This caused more draw from my system and made it look like the battery/charging system was weak.The little spring which returned the dimmer switch to the center position was gone and the contacts were touching both beams.
                                So if this was the case, were they both lit all the time? I just checked my dimmer switch and I still have both low and high beams separately.
                                Larry

                                '79 GS 1000E
                                '93 Honda ST 1100 SOLD-- now residing in Arizona.
                                '18 Triumph Tiger 800 (gone too soon)
                                '19 Triumph Tiger 800 Christmas 2018 to me from me.
                                '01 BMW R1100RL project purchased from a friend.

                                Comment

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