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DT125R FORUM

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  4. TDR 125 2001

TDR 125 2001

Scheduled Pinned Locked Moved TDR
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  • MightymanM Mightyman

    So it's a coolant expansion bottle... I can't quite work out it's purpose... On mx bikes the coolant will only drip out of the overflow if you put too much in. I'm sure it doesn't expand? Don't worry Callum I remember you mentioning it to me more than once. I used the Athena one and haven't had any coolant overflow so can't see how the bottle is used. Yeah I would like to find a new project but ill need to do a little bit more to this at least so it can pass an MOT.

    CalumC Online
    CalumC Online
    Calum
    wrote on last edited by
    #5

    @MIGHTYMAN Yes the water expands as it warms up. It moves from the radiator to the overflow. It should not spill out. Not even drip. Shouldn't lose a drop.

    I have had this happen to me on my motors, both car and bikes. It's either the thermostat not opening. Causing the water to just overheat. Or the head gasket is blowing, causing undue pressure inside the engine.

    Always Originate, Never Pirate!

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    • MightymanM Offline
      MightymanM Offline
      Mightyman
      wrote on last edited by
      #6

      I'm not losing a drop and never have in the past. I'm just saying I thought it was just an overflow. So, if the coolant expands and falls into the coolant expansion bottle, how does it end up back in the radiator loop as there is only one pipe going to it?!

      TDR 125 - 2001

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      • CalumC Online
        CalumC Online
        Calum
        wrote on last edited by
        #7

        Oh sorry. As it cools and contracts it creates a vacuum which pulls the water back out the bottle and back into the radiator.

        Sorry I didn't understand your question at first.

        Always Originate, Never Pirate!

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        • MightymanM Offline
          MightymanM Offline
          Mightyman
          wrote on last edited by
          #8

          Okay now that makes sense. But why don't mx bikes have them? I just filled my TDR radiator loop up with the same Putoline stuff I used to chuck into my KTM and it doesn't seem to have expanded so far. I'm sorry if it seems like I'm being a bit thick but I like to know all the info before I can fully understand something.

          TDR 125 - 2001

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          • DartyD Offline
            DartyD Offline
            Darty
            wrote on last edited by
            #9

            I took the the coolant tank off, I just run a short pipe off the overflow into a Redbull can now,

            Makes no difference, never lose much fluid even after it get's very warm.

            Keep it real

            CalumC 1 Reply Last reply
            1
            • DartyD Darty

              I took the the coolant tank off, I just run a short pipe off the overflow into a Redbull can now,

              Makes no difference, never lose much fluid even after it get's very warm.

              CalumC Online
              CalumC Online
              Calum
              wrote on last edited by
              #10

              @Darty Yes that theory Mightmany. To put it into practice I am not convinced either. It is what it is. Darty has the right idea.

              Always Originate, Never Pirate!

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              • MightymanM Offline
                MightymanM Offline
                Mightyman
                wrote on last edited by
                #11

                Got a pretty good video of it nearly fully back together and running nicely earlier.

                https://youtu.be/u2hdpVhdFNk

                TDR 125 - 2001

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                • MightymanM Offline
                  MightymanM Offline
                  Mightyman
                  wrote on last edited by
                  #12

                  I was going to post in the wanted section but I highly doubt anyone will have what I'm after. So I'de like to know if anyone has any info on whether or not there is any other front brake callipers that are the same as the one on this bike? My one is totally seized so had to remove it ages ago. I think it'll be costly to rebuild it so might as well buy a second hand one.

                  TDR 125 - 2001

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                  • mad73M Offline
                    mad73M Offline
                    mad73
                    wrote on last edited by
                    #13

                    looking at the pic it looks the same as a fzr600 if its 100mm centres if its 90mm could be the same as a fzr400 ,, would a tzr 125 not be the same ?

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                    • MightymanM Offline
                      MightymanM Offline
                      Mightyman
                      wrote on last edited by
                      #14

                      I might dismantle it tomorrow so I'll jot down some measurements. Found out I'm going to have to do something about my rear brake on my WR so I might as well rebuild them both I'm thinking. Took the WR one apart today and it wasn't too difficult really. £15 for the rebuild kit so I'll see how it goes.

                      TDR 125 - 2001

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                      • MightymanM Offline
                        MightymanM Offline
                        Mightyman
                        wrote on last edited by
                        #15

                        Small update,

                        A used stock TDR 125 exhaust popped up on eBay the other day so I grabbed it for £60 delivered. I quite like the original look of the bike, even if the performance won't quite be all there. I think it's a good selling point. If I do decide to keep the bike I might pay out for an aftermarket one though. Not bad condition I thought, should clean up nicely.

                        http://i.imgur.com/GLFjTxl.jpg

                        http://i.imgur.com/w9RbwbY.jpg

                        TDR 125 - 2001

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                        • mad73M Offline
                          mad73M Offline
                          mad73
                          wrote on last edited by
                          #16

                          found this on fleebay http://www.ebay.co.uk/itm/YAMAHA-TDR-125-1997-front-brake-calliper-master-cylinder-mirror-/231502918329?hash=item35e6a632b9:g:l6cAAOSwPYZVAGwi
                          its nothing like a fzr calliper

                          MightymanM 1 Reply Last reply
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                          • mad73M mad73

                            found this on fleebay http://www.ebay.co.uk/itm/YAMAHA-TDR-125-1997-front-brake-calliper-master-cylinder-mirror-/231502918329?hash=item35e6a632b9:g:l6cAAOSwPYZVAGwi
                            its nothing like a fzr calliper

                            MightymanM Offline
                            MightymanM Offline
                            Mightyman
                            wrote on last edited by
                            #17

                            @mad73 Yeah I have seen that but I was hoping to pay a bit less as all.

                            TDR 125 - 2001

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                            • MightymanM Offline
                              MightymanM Offline
                              Mightyman
                              wrote on last edited by Mightyman
                              #18

                              Plastics definitely need some work, but overall they are in a lot better condition than I remember. Left to do is fit new indicators, fit new exhaust and rebuild front calliper. Then I'm pretty sure it'll be okay to get through an MOT!

                              Totted up all the receipts I have for the bike and it came to just over £1200 including original cost of the bike... Wasn't surprised, but if I had of known it was going to need that much spending on it, I would have considered just selling it for parts tbh!

                              http://i.imgur.com/Gfa8tuU.jpg

                              Another video of it running with the full stock exhaust system on it now.

                              https://youtu.be/Qpt1-qNR5no

                              TDR 125 - 2001

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                              • DartyD Offline
                                DartyD Offline
                                Darty
                                wrote on last edited by
                                #19

                                Looks sweet man, good for that money.

                                Keep it real

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                                • CalumC Online
                                  CalumC Online
                                  Calum
                                  wrote on last edited by
                                  #20

                                  It's looking grand pal. Well worth the time and money. 1200 is cheap for what it is. You should get your money back for sure. And the experience is priceless

                                  Always Originate, Never Pirate!

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                                  • MightymanM Offline
                                    MightymanM Offline
                                    Mightyman
                                    wrote on last edited by Mightyman
                                    #21

                                    Has been years since it was ridden on the road but I took it on it's first outing today! Didn't go too well as I completely forgot that it doesn't have a low fuel light, and left it on reserve!
                                    https://youtu.be/JG8DehEB0Oc

                                    TDR 125 - 2001

                                    NINJAN 1 Reply Last reply
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                                    • MightymanM Mightyman

                                      Has been years since it was ridden on the road but I took it on it's first outing today! Didn't go too well as I completely forgot that it doesn't have a low fuel light, and left it on reserve!
                                      https://youtu.be/JG8DehEB0Oc

                                      NINJAN Offline
                                      NINJAN Offline
                                      NINJA
                                      wrote on last edited by
                                      #22

                                      @MIGHTYMAN Long walk pushing it I guess? LOL

                                      But looks like she rode well before the lil blooper!!! ;O)

                                      SEDUCED BY THE DARK SIDE!!!

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                                      • MightymanM Offline
                                        MightymanM Offline
                                        Mightyman
                                        wrote on last edited by
                                        #23

                                        Yeah it's a very smooth ride. Going to test it out on the motorway before I decide whether or not to keep it for commuting. Lucky I only had to walk it about half a mile!

                                        TDR 125 - 2001

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                                        • Biker_123B Offline
                                          Biker_123B Offline
                                          Biker_123
                                          wrote on last edited by
                                          #24

                                          The amount of times this has happened to me in the past is unreal 😂 I once had to push a bike over 10 miles no phone or anything on me I was in the middle of no where lol glad you didn't have to push it far! Bike looks like it runs sweet wouldn't mind getting my hands on tdr project at some point nice bikes .

                                          Every problem has a solution

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