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DT125R FORUM

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Dt 125r dyno

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  • J jonne123

    im thinking of buying zeeltronic and then for dyno adjustment. "rather slow bike with good tune than fast bike with bad tune"

    A Offline
    A Offline
    Arild
    wrote on last edited by
    #51

    @jonne123
    Yeah theyre apparently supposed to be really good, but why not just aim to have a fast bike with a good tune, it doesnt have to be on or the other, all the fast bikes wouldnt be fast bikes without a good tune, dont really understand your quote

    Stevie WonderS 1 Reply Last reply
    0
    • A Arild

      @jonne123
      Yeah theyre apparently supposed to be really good, but why not just aim to have a fast bike with a good tune, it doesnt have to be on or the other, all the fast bikes wouldnt be fast bikes without a good tune, dont really understand your quote

      Stevie WonderS Offline
      Stevie WonderS Offline
      Stevie Wonder
      wrote on last edited by
      #52

      @Arild said in Dt 125r dyno:

      @jonne123
      Yeah theyre apparently supposed to be really good, but why not just aim to have a fast bike with a good tune, it doesnt have to be on or the other, all the fast bikes wouldnt be fast bikes without a good tune, dont really understand your quote

      Or even better firstly rule out what it is that you wish to achieve when you say “fast”

      Are we talking full on “wheelies every gear m8” or BARacing angry bicycle

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      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #53

        So the argument I have about that is my DTR probably doesn't make that sort of power.

        Doesn't matter that it's not the "bad boy" French model since they aren't as tuned as mine. Fact of the matter is, they simply don't nake that much power without significant investment.

        Always Originate, Never Pirate!

        1 Reply Last reply
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        • NottsbikerN Offline
          NottsbikerN Offline
          Nottsbiker
          wrote on last edited by
          #54

          Had this recently with someone telling me my TDR would be dog slow with its DTR cylinder and that his 4FU with 32mm would be a rocket ship. Person seemed unable to comprehend that I didnt really care that much and that its essentially a softly tuned fun / commuter bike that is designed to be reliable and run on basic maintenance only.

          P codes, SP cylinders etc are all good if you have them, can afford them and are that bothered about getting 1 or 2 bhp out of a softly tuned Yamaha engine.

          I've just sold 150bhp Ducati Multistrada so I'm not overly interested in 15 or 20 hp as long as the bike moves and is fun to ride 🙂

          1 Reply Last reply
          2
          • CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #55

            If I wanted to go silly fast I'd take my ZXR out for a spin 🤣

            Always Originate, Never Pirate!

            NottsbikerN 1 Reply Last reply
            1
            • J Offline
              J Offline
              jonne123
              wrote on last edited by
              #56

              Yeah i know that its not a rocket ship. But i hope for little more throttle response and 1-3hp more

              NottsbikerN 1 Reply Last reply
              0
              • S Offline
                S Offline
                SpookDog
                wrote on last edited by
                #57

                @jonne123

                No disrespect meant from the start! But I’m guessing that you’re about 17 and haven’t ridden a great deal of bikes?
                Every 125 Has been restricted to about 12bhp since the late 80’s AFAIK. Any bike that is significantly above that has been de-restricted and/or tuned.
                You can unrestricted early dtr’s by ‘pinning’ the power valve open. This will give you higher bhp but will basically make the throttle an on/off button with terrible response.
                Later bikes I don’t know as much. You can unrestrict them and the variable power valve will still give you better low rev torque/response (I’m guessing that is what you mean by throttle response?)

                Do some reading up on deristricting your year model bike, then do some riding. Stop worrying about numbers bud, enjoy a wicked little bike for what it is, before yearning for more...

                CalumC 1 Reply Last reply
                3
                • J jonne123

                  Yeah i know that its not a rocket ship. But i hope for little more throttle response and 1-3hp more

                  NottsbikerN Offline
                  NottsbikerN Offline
                  Nottsbiker
                  wrote on last edited by
                  #58

                  @jonne123 said in Dt 125r dyno:

                  Yeah i know that its not a rocket ship. But i hope for little more throttle response and 1-3hp more

                  Thats a big increase for a 125

                  1 Reply Last reply
                  0
                  • CalumC Calum

                    If I wanted to go silly fast I'd take my ZXR out for a spin 🤣

                    NottsbikerN Offline
                    NottsbikerN Offline
                    Nottsbiker
                    wrote on last edited by
                    #59

                    @Calum said in Dt 125r dyno:

                    If I wanted to go silly fast I'd take my ZXR out for a spin 🤣

                    Building a 900 Monster this winter for fun at a lower pace 🙂

                    1 Reply Last reply
                    1
                    • S SpookDog

                      @jonne123

                      No disrespect meant from the start! But I’m guessing that you’re about 17 and haven’t ridden a great deal of bikes?
                      Every 125 Has been restricted to about 12bhp since the late 80’s AFAIK. Any bike that is significantly above that has been de-restricted and/or tuned.
                      You can unrestricted early dtr’s by ‘pinning’ the power valve open. This will give you higher bhp but will basically make the throttle an on/off button with terrible response.
                      Later bikes I don’t know as much. You can unrestrict them and the variable power valve will still give you better low rev torque/response (I’m guessing that is what you mean by throttle response?)

                      Do some reading up on deristricting your year model bike, then do some riding. Stop worrying about numbers bud, enjoy a wicked little bike for what it is, before yearning for more...

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #60

                      @SpookDog I believe you could also show your License to Yamaha at time of purchase and they'd fit the YPVS for you. Hence why some came with the valves.

                      The latter models were restricted in other ways and probably came with the valves fitted for emmissions.

                      Always Originate, Never Pirate!

                      1 Reply Last reply
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                      • S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by SpookDog
                        #61

                        I did wonder where all the 3 wire servo’s came from. I heard that a 1000 exup had the same servo. Thought that was a 4stroke though.
                        I love learning new shit!

                        Did you mean the 5 wire were emission related? Dunno, I still think they are for improving bottom rev torque. Interesting though...

                        1 Reply Last reply
                        0
                        • S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by
                          #62

                          Off topic. I saw the most beautiful bike ever. It was a Ducati with a ‘space frame’ of steel with about a 750-1000 v twin engine. 80’s looking. I never got a look at the numbers, never had any decals. Cafe racer, clip on looking dream boat!
                          I’d really love to find out what it was...

                          1 Reply Last reply
                          0
                          • J Offline
                            J Offline
                            jonne123
                            wrote on last edited by jonne123
                            #63

                            But doesnt better spark and better ypvs map help eith power a little?

                            Bikes i tested

                            Suzuki pv 77cc & 100cc

                            Yamaha 125r

                            70cc derbi

                            yamaha wr 125x

                            Honda monkey 125cc & 74cc

                            Few Scooters

                            1 Reply Last reply
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                            • DartyD Offline
                              DartyD Offline
                              Darty
                              wrote on last edited by
                              #64

                              alt text

                              alt text

                              alt text

                              The consensus is a fully de-restricted - Pre 1999 DT125R (Light Generator design) , All the ECU's are unrestricted pre 1999/8 will make around at 18hp stock, only because they rev out to 10,500rpm or so.

                              Keep it real

                              1 Reply Last reply
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                              • J Offline
                                J Offline
                                jonne123
                                wrote on last edited by jonne123
                                #65

                                https://tunisti.kuvat.fi/kuvat/Dyno graphs/Vauhtipaivat 2020 Dyno Results/R11.bmp

                                1 Reply Last reply
                                0
                                • J Offline
                                  J Offline
                                  jonne123
                                  wrote on last edited by jonne123
                                  #66

                                  How tzr 125 makes 25hp?

                                  NottsbikerN 1 Reply Last reply
                                  0
                                  • J jonne123

                                    How tzr 125 makes 25hp?

                                    NottsbikerN Offline
                                    NottsbikerN Offline
                                    Nottsbiker
                                    wrote on last edited by
                                    #67

                                    @jonne123 said in Dt 125r dyno:

                                    How tzr 125 makes 25hp?

                                    Different dyno's read differently and also manufacturers often claim at the crank not back wheel 😉

                                    1 Reply Last reply
                                    0
                                    • J jonne123

                                      So im simple terms its easier to buy another bike.

                                      clawsC Offline
                                      clawsC Offline
                                      claws
                                      wrote on last edited by
                                      #68

                                      @jonne123 kyllä noista detseistä tulee se 25 hepoa täystehosena koneelta. tuo 13 hepoa on kuristuksilla. itellä tuli ehkä joku 27-28 ku oli 170cc, giannelli ja 36 millinen keihini

                                      2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                                      1999 YZ250 with a 1999 DTR VIN

                                      1 Reply Last reply
                                      0
                                      • J Offline
                                        J Offline
                                        jonne123
                                        wrote on last edited by
                                        #69

                                        täytyy käydä toisessa penkissä ja huomaa että ei ollu pakoaukon säädin oikein kun ei penkissä menny edes 10000rpm.

                                        O clawsC 2 Replies Last reply
                                        0
                                        • J jonne123

                                          täytyy käydä toisessa penkissä ja huomaa että ei ollu pakoaukon säädin oikein kun ei penkissä menny edes 10000rpm.

                                          O Offline
                                          O Offline
                                          oldman
                                          wrote on last edited by
                                          #70

                                          @jonne123 absolutely, couldn't agree more!

                                          CalumC 1 Reply Last reply
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