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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
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  • S SpookDog
    11 Nov 2023, 12:29

    Hmmm! Got a good winter hours snaggle, my headlight ‘stops’ when I turn the bars to a certain angle. It doesn’t affect when normal riding, just when manoeuvring back & forth, left to right and the like. So I never really noticed it before…
    Not so handy when it’s getting darker by the day! 🫤 …

    S Offline
    S Offline
    SpookDog
    wrote on 11 Nov 2023, 17:04 last edited by SpookDog 11 Nov 2023, 17:05
    #727

    Red & yellow stripe feed wire to the headlight was just kinda ‘smooshed’ up into place at one of the idiot proof connectors. How it was still working is a mystery to me. No wonder my headlight dimmed when I put on the brakes!…

    Other thing was a red wire at another connector was doing the same business! It was basically responsible for all the battery operated shizness! It’s another wonder that the PV cycled when I turned the key on! The wire fell off when I removed the headlight (along with the red/yellow stripe wire) stopping the PV from cycling, the brake light, indicators, horn, ect, from working!

    Basically both my AC & DC circuits were running by a hair! (Or gravity!!) Thank fux the ignition curcuit is sound! I hope!! 😇 …

    At least now I’ve bodged it the lights and horn ect are bright and truer than they’ve ever been. For now until the test ride anyways 😐 …

    Till next time…

    C 1 Reply Last reply 11 Nov 2023, 18:49
    0
    • S SpookDog
      11 Nov 2023, 17:04

      Red & yellow stripe feed wire to the headlight was just kinda ‘smooshed’ up into place at one of the idiot proof connectors. How it was still working is a mystery to me. No wonder my headlight dimmed when I put on the brakes!…

      Other thing was a red wire at another connector was doing the same business! It was basically responsible for all the battery operated shizness! It’s another wonder that the PV cycled when I turned the key on! The wire fell off when I removed the headlight (along with the red/yellow stripe wire) stopping the PV from cycling, the brake light, indicators, horn, ect, from working!

      Basically both my AC & DC circuits were running by a hair! (Or gravity!!) Thank fux the ignition curcuit is sound! I hope!! 😇 …

      At least now I’ve bodged it the lights and horn ect are bright and truer than they’ve ever been. For now until the test ride anyways 😐 …

      Till next time…

      C Offline
      C Offline
      Calum
      wrote on 11 Nov 2023, 18:49 last edited by
      #728

      @SpookDog @HOTSHOT-III Posted some really helpful pictures, but unfortunately they squashed as I had to restore the database...Sorry bud, was a really useful post though.

      Always Originate, Never Pirate!

      H 1 Reply Last reply 11 Nov 2023, 20:45
      1
      • C Calum
        11 Nov 2023, 18:49

        @SpookDog @HOTSHOT-III Posted some really helpful pictures, but unfortunately they squashed as I had to restore the database...Sorry bud, was a really useful post though.

        H Offline
        H Offline
        HOTSHOT III
        wrote on 11 Nov 2023, 20:45 last edited by
        #729

        @Calum Thanks bud, I wondered what happened to that post, just seen you've been fixing the forum all day 👍

        @SpookDog Here are some cable routing schematics from the Yamaha repair manual, the wiring behind the headlight is a bit of a rat's nest like most trail bikes but this should help you out. Also considering the time of year and the weather we've been having, it's well worth giving the wiring behind the headlight (and under the tank) a thorough blast with WD40 . Throw old towels or dust sheets over both wheels to protect the tyres and brakes, then apply in the manner displayed by the gentleman in the final image. You can also fill up the handlebar switches until it flows out of every orifice, it's a harsh environment for a switch but by doing this regularly you can make the switches last the life of the bike

        alt text

        alt text

        alt text

        alt text

        S 2 Replies Last reply 11 Nov 2023, 20:52
        1
        • H HOTSHOT III
          11 Nov 2023, 20:45

          @Calum Thanks bud, I wondered what happened to that post, just seen you've been fixing the forum all day 👍

          @SpookDog Here are some cable routing schematics from the Yamaha repair manual, the wiring behind the headlight is a bit of a rat's nest like most trail bikes but this should help you out. Also considering the time of year and the weather we've been having, it's well worth giving the wiring behind the headlight (and under the tank) a thorough blast with WD40 . Throw old towels or dust sheets over both wheels to protect the tyres and brakes, then apply in the manner displayed by the gentleman in the final image. You can also fill up the handlebar switches until it flows out of every orifice, it's a harsh environment for a switch but by doing this regularly you can make the switches last the life of the bike

          alt text

          alt text

          alt text

          alt text

          S Offline
          S Offline
          SpookDog
          wrote on 11 Nov 2023, 20:52 last edited by SpookDog 11 Dec 2023, 08:44
          #730

          @HOTSHOT-III

          We walk the Earth, like Jolly Green Giants! But with Guns!!…

          Stay Frosty!…

          Did a test ride: Lights are good! Even the engine is crisper since the PV seems to be kicking in properly!…

          I could of done with routing pics years ago, but they be always welcome 😜 …

          Cheers!…

          1 Reply Last reply
          2
          • H HOTSHOT III
            11 Nov 2023, 20:45

            @Calum Thanks bud, I wondered what happened to that post, just seen you've been fixing the forum all day 👍

            @SpookDog Here are some cable routing schematics from the Yamaha repair manual, the wiring behind the headlight is a bit of a rat's nest like most trail bikes but this should help you out. Also considering the time of year and the weather we've been having, it's well worth giving the wiring behind the headlight (and under the tank) a thorough blast with WD40 . Throw old towels or dust sheets over both wheels to protect the tyres and brakes, then apply in the manner displayed by the gentleman in the final image. You can also fill up the handlebar switches until it flows out of every orifice, it's a harsh environment for a switch but by doing this regularly you can make the switches last the life of the bike

            alt text

            alt text

            alt text

            alt text

            S Offline
            S Offline
            SpookDog
            wrote on 12 Nov 2023, 08:53 last edited by
            #731

            @HOTSHOT-III

            Is that manual available online? Or do you own the book? I didn’t know that there was an official workshop manual for the Dtr…

            PS you still got the wheels for sale?…

            H 1 Reply Last reply 12 Nov 2023, 09:20
            0
            • S SpookDog
              12 Nov 2023, 08:53

              @HOTSHOT-III

              Is that manual available online? Or do you own the book? I didn’t know that there was an official workshop manual for the Dtr…

              PS you still got the wheels for sale?…

              H Offline
              H Offline
              HOTSHOT III
              wrote on 12 Nov 2023, 09:20 last edited by
              #732

              @SpookDog Here you go bud, it was the official dealer manual in 1988:

              https://www.ebay.co.uk/itm/323952533497?hash=item4b6d135ff9:g:8mgAAOSw8A1dqtdu&amdata=enc%3AAQAIAAAA0J7povBA%2Fed02ZQWQaloCPHXV9GkRuofT9DZVVp%2BbiuZl6AVamwQCANMTldfO39qzx9CoE1xjcXGtzWtYOLa48iErMAfaeeFL%2B8Ee%2BmjpaRTflmyAenChVIiUQalQM3peHJ2%2Bv1gblqHb%2F86QS6hsY4RvN8OIFKkTrYtH4X1AK2gK%2BAfPKQYAOYtJVuIBwQ0aqOJhDSZog4qRkLPYOfBvRwRikbIP%2FQ4ylJERGtrmNAHoUC%2FpW140AmrFjE1ENEJKq3gt8g0ZpS%2FyzMcYNrfA2A%3D|tkp%3ABk9SR8Lrpaz4Yg

              Obviously you have to be a bit careful because all the engine specs are for the 3DB round slide carb model but the cycle parts are essentially the same on all DTRs right up to 2003. Lots for sale online though, I was able to find an '89 3MB DTRe version with a full colour wiring diagram for about £20 I think.

              And some of the torque settings are frankly ludicrous; for example 20Nm for the disc bolts is off the scale for M6. I destruction tested an old rear one using a spanner in the vice and the 4mm allen head rounded at 16Nm so I did mine on the bike to 12 rear and 14 front and they never moved. However it does show it's wise to invest in genuine bolts or their equivalent for anything structural as a stainless Xmas tree decoration bolt would probably fail at around half that.

              Wheels sold a couple of weeks ago I'm afraid, maybe talk to Salisbury Wheel Builders in Ringwood?

              S 1 Reply Last reply 12 Nov 2023, 14:34
              0
              • H HOTSHOT III
                12 Nov 2023, 09:20

                @SpookDog Here you go bud, it was the official dealer manual in 1988:

                https://www.ebay.co.uk/itm/323952533497?hash=item4b6d135ff9:g:8mgAAOSw8A1dqtdu&amdata=enc%3AAQAIAAAA0J7povBA%2Fed02ZQWQaloCPHXV9GkRuofT9DZVVp%2BbiuZl6AVamwQCANMTldfO39qzx9CoE1xjcXGtzWtYOLa48iErMAfaeeFL%2B8Ee%2BmjpaRTflmyAenChVIiUQalQM3peHJ2%2Bv1gblqHb%2F86QS6hsY4RvN8OIFKkTrYtH4X1AK2gK%2BAfPKQYAOYtJVuIBwQ0aqOJhDSZog4qRkLPYOfBvRwRikbIP%2FQ4ylJERGtrmNAHoUC%2FpW140AmrFjE1ENEJKq3gt8g0ZpS%2FyzMcYNrfA2A%3D|tkp%3ABk9SR8Lrpaz4Yg

                Obviously you have to be a bit careful because all the engine specs are for the 3DB round slide carb model but the cycle parts are essentially the same on all DTRs right up to 2003. Lots for sale online though, I was able to find an '89 3MB DTRe version with a full colour wiring diagram for about £20 I think.

                And some of the torque settings are frankly ludicrous; for example 20Nm for the disc bolts is off the scale for M6. I destruction tested an old rear one using a spanner in the vice and the 4mm allen head rounded at 16Nm so I did mine on the bike to 12 rear and 14 front and they never moved. However it does show it's wise to invest in genuine bolts or their equivalent for anything structural as a stainless Xmas tree decoration bolt would probably fail at around half that.

                Wheels sold a couple of weeks ago I'm afraid, maybe talk to Salisbury Wheel Builders in Ringwood?

                S Offline
                S Offline
                SpookDog
                wrote on 12 Nov 2023, 14:34 last edited by SpookDog 11 Dec 2023, 14:37
                #733

                @HOTSHOT-III

                I’m glad you sold the wheels, I was only gonna offer £300 😜. …

                If you see an official dealer manual for sale, please drop me a link! I always look for one when I get a vehicle I’m gonna cherish.
                (the 1970’s FG500 one I got looked like an encyclopaedia Britannia!)
                Only seen ‘service’ manuals for the DTr though. I’d love to know if there’s one for the 95> Tzr’s as well!…

                S 1 Reply Last reply 12 Nov 2023, 14:38
                0
                • S SpookDog
                  12 Nov 2023, 14:34

                  @HOTSHOT-III

                  I’m glad you sold the wheels, I was only gonna offer £300 😜. …

                  If you see an official dealer manual for sale, please drop me a link! I always look for one when I get a vehicle I’m gonna cherish.
                  (the 1970’s FG500 one I got looked like an encyclopaedia Britannia!)
                  Only seen ‘service’ manuals for the DTr though. I’d love to know if there’s one for the 95> Tzr’s as well!…

                  S Offline
                  S Offline
                  SpookDog
                  wrote on 12 Nov 2023, 14:38 last edited by
                  #734

                  @SpookDog

                  Doh! Only just checked the link! ☺️

                  1 Reply Last reply
                  2
                  • O OllieDTR
                    7 Nov 2023, 21:47

                    @SpookDog

                    Hi bud
                    Send me your address in messages and I’ll send it out! Sorry I completely forgot to busy ripping on my dt😂
                    alt text

                    S Offline
                    S Offline
                    SpookDog
                    wrote on 13 Nov 2023, 15:23 last edited by SpookDog
                    #735

                    @OllieDTR

                    Cheers bud! Got the pin today, along with the main bearings I’ve been waiting on forever 🙂 …

                    WTF happened to the motor that pic of a piston came out of?! That’s one of the most catastrophic seizures I’ve ever seen! Was it 2T oil or heat? I’m guessing it’s oil related! 😜 Tho it got pretty damn hot by the looks…

                    ————————————————-

                    I found a pair of casings I’d forgot about that are less knocked up than the early number ones I was planning on using. It means I can go ahead earlier with my build. Just got to get oil seals and a blaster little end bearing, along with a 170 head gasket from PJME when I get some monies on Wednesday!
                    Maybe some new tyres for the salty season.

                    Any recommendations for ‘adventure’ tyres? I don’t want road tires but I haven’t been off road in so long I can’t remember. Even then it was dry so the knobblies are kinda like me, redundant 😐 …

                    H O 2 Replies Last reply 13 Nov 2023, 17:19
                    0
                    • S SpookDog
                      13 Nov 2023, 15:23

                      @OllieDTR

                      Cheers bud! Got the pin today, along with the main bearings I’ve been waiting on forever 🙂 …

                      WTF happened to the motor that pic of a piston came out of?! That’s one of the most catastrophic seizures I’ve ever seen! Was it 2T oil or heat? I’m guessing it’s oil related! 😜 Tho it got pretty damn hot by the looks…

                      ————————————————-

                      I found a pair of casings I’d forgot about that are less knocked up than the early number ones I was planning on using. It means I can go ahead earlier with my build. Just got to get oil seals and a blaster little end bearing, along with a 170 head gasket from PJME when I get some monies on Wednesday!
                      Maybe some new tyres for the salty season.

                      Any recommendations for ‘adventure’ tyres? I don’t want road tires but I haven’t been off road in so long I can’t remember. Even then it was dry so the knobblies are kinda like me, redundant 😐 …

                      H Offline
                      H Offline
                      HOTSHOT III
                      wrote on 13 Nov 2023, 17:19 last edited by
                      #736

                      @SpookDog Avon TrailRiders in the recommended sizes work very well on the DTR, they're kind of 90% road, 10% dirt; very grippy on tarmac when you run standard pressures 18psi front/22psi rear but just blocky enough to be acceptable off road:

                      https://www.avontyres.com/en-gb/tyres/trailrider?searchtype=car&cartype=motorcycle&car=Yamaha+DT+125+R+1991+-+1997&engine_spec=125

                      S 2 Replies Last reply 13 Nov 2023, 18:34
                      0
                      • H HOTSHOT III
                        13 Nov 2023, 17:19

                        @SpookDog Avon TrailRiders in the recommended sizes work very well on the DTR, they're kind of 90% road, 10% dirt; very grippy on tarmac when you run standard pressures 18psi front/22psi rear but just blocky enough to be acceptable off road:

                        https://www.avontyres.com/en-gb/tyres/trailrider?searchtype=car&cartype=motorcycle&car=Yamaha+DT+125+R+1991+-+1997&engine_spec=125

                        S Offline
                        S Offline
                        SpookDog
                        wrote on 13 Nov 2023, 18:34 last edited by SpookDog
                        #737

                        @HOTSHOT-III

                        They have any kinda decent lifespan? I’ve been burnt before with tyres that only lasted 12weeks! Less than 7K miles!…

                        I seem to remember Bridgestone tyre’s having multi density rubber , harder wearing on the centre, mid on the mid and soft on the edges. Helped them maintain their profile throughout the lifespan of the tyre, as well as grip through cornering. Can’t remember which marque they were tho’…

                        H 1 Reply Last reply 13 Nov 2023, 22:18
                        0
                        • S SpookDog
                          13 Nov 2023, 15:23

                          @OllieDTR

                          Cheers bud! Got the pin today, along with the main bearings I’ve been waiting on forever 🙂 …

                          WTF happened to the motor that pic of a piston came out of?! That’s one of the most catastrophic seizures I’ve ever seen! Was it 2T oil or heat? I’m guessing it’s oil related! 😜 Tho it got pretty damn hot by the looks…

                          ————————————————-

                          I found a pair of casings I’d forgot about that are less knocked up than the early number ones I was planning on using. It means I can go ahead earlier with my build. Just got to get oil seals and a blaster little end bearing, along with a 170 head gasket from PJME when I get some monies on Wednesday!
                          Maybe some new tyres for the salty season.

                          Any recommendations for ‘adventure’ tyres? I don’t want road tires but I haven’t been off road in so long I can’t remember. Even then it was dry so the knobblies are kinda like me, redundant 😐 …

                          O Offline
                          O Offline
                          OllieDTR
                          wrote on 13 Nov 2023, 18:46 last edited by
                          #738

                          @SpookDog

                          Mate was flat out with no coolant 😂

                          1 Reply Last reply
                          0
                          • S SpookDog
                            13 Nov 2023, 18:34

                            @HOTSHOT-III

                            They have any kinda decent lifespan? I’ve been burnt before with tyres that only lasted 12weeks! Less than 7K miles!…

                            I seem to remember Bridgestone tyre’s having multi density rubber , harder wearing on the centre, mid on the mid and soft on the edges. Helped them maintain their profile throughout the lifespan of the tyre, as well as grip through cornering. Can’t remember which marque they were tho’…

                            H Offline
                            H Offline
                            HOTSHOT III
                            wrote on 13 Nov 2023, 22:18 last edited by HOTSHOT III
                            #739

                            @SpookDog I think they were Bridgestone Battlaxes which were fitted to the original Honda FireBlade when it came out in '92 (best looking of all the FireBlades IMO; the two round headlights made it look like the GSX-R of the day pumped up on steroids), IIRC they called it SACT (Straight and Cornering Technology). I don't know of any DTR-sized tyre which has dual compound.

                            alt text

                            TrailRiders are no touring tyre but they last pretty well and are a vast improvement over most so-called "dual purpose" tyres which tend to be a bit crap on both dirt and tarmac as it's too much of a compromise. Tyres are a huge part of your setup equation so it's worth accepting a little extra wear if it transforms the bike. I was able to get a deal from an online tyre company by ordering a front and two rears as the rear wears a lot quicker on bikes. This is sensible anyway as bikes are sensitive to mismatched tyres (particularly road-biased tyres) so if you can't get the correct rear when it wears out, you've effectively wasted around half the life of the front tyre.

                            1 Reply Last reply
                            0
                            • S Offline
                              S Offline
                              SpookDog
                              wrote on 14 Nov 2023, 13:18 last edited by
                              #740

                              Cheers bud, that’s worth thinking about. I don’t mind paying up for quality, just not bling!…

                              Twin round lights have got to be the best looking fairing setup of all time. No amount of ‘fox’ or ‘hawk’ eyes is gonna change that. I’ve always preferred it on cars as well. Mk3 cortina’s or any old capri 😛 …

                              1 Reply Last reply
                              1
                              • H HOTSHOT III
                                13 Nov 2023, 17:19

                                @SpookDog Avon TrailRiders in the recommended sizes work very well on the DTR, they're kind of 90% road, 10% dirt; very grippy on tarmac when you run standard pressures 18psi front/22psi rear but just blocky enough to be acceptable off road:

                                https://www.avontyres.com/en-gb/tyres/trailrider?searchtype=car&cartype=motorcycle&car=Yamaha+DT+125+R+1991+-+1997&engine_spec=125

                                S Offline
                                S Offline
                                SpookDog
                                wrote on 14 Nov 2023, 20:23 last edited by
                                #741

                                @HOTSHOT-III

                                What size for the rear?

                                The front I’m guessing 90/90?

                                H 1 Reply Last reply 14 Nov 2023, 21:56
                                0
                                • S SpookDog
                                  14 Nov 2023, 20:23

                                  @HOTSHOT-III

                                  What size for the rear?

                                  The front I’m guessing 90/90?

                                  H Offline
                                  H Offline
                                  HOTSHOT III
                                  wrote on 14 Nov 2023, 21:56 last edited by HOTSHOT III
                                  #742

                                  @SpookDog Avon recommend 80/90 21" front and 110/80 18" rear on the DTR; pretty close to the OEM sizes of 2.75" front and 4.10" rear. If you take a look at the Avon DT125R webpage the recommended rim sizes for these are 1.85" front and 2.50" rear; bigger than the stock DTR rims (1.60" front and 1.85" rear). I had a chat with Avon over the phone about this before getting my 1st set and they told me Yamaha confuse tyre manufacturers with oddball rim sizes quite a lot. I had TrailRiders in these sizes on 2 of my 3 DTRs at one time and it never caused an issue.

                                  Definitely the Ford Capri 👍

                                  1 Reply Last reply
                                  0
                                  • S Offline
                                    S Offline
                                    SpookDog
                                    wrote on 16 Nov 2023, 15:57 last edited by
                                    #743

                                    Has anyone ever had vapour blasting done before? I got quoted £2 a minute. Works out at £50-80 to get the whole engine, barrel, head, clutch casing, ect done.
                                    Good or bad price?…

                                    O 1 Reply Last reply 16 Nov 2023, 19:21
                                    0
                                    • C Offline
                                      C Offline
                                      Calum
                                      wrote on 16 Nov 2023, 18:00 last edited by Calum
                                      #744

                                      Sounds pricey. I've not paid that much.

                                      I use MB Vapor Blasting and he's VERY competitive.

                                      https://mbengineering.uk/

                                      I've yet to be disappointed.

                                      I cannot recommend Matt more than enough.

                                      Always Originate, Never Pirate!

                                      S 1 Reply Last reply 16 Nov 2023, 18:39
                                      0
                                      • C Calum
                                        16 Nov 2023, 18:00

                                        Sounds pricey. I've not paid that much.

                                        I use MB Vapor Blasting and he's VERY competitive.

                                        https://mbengineering.uk/

                                        I've yet to be disappointed.

                                        I cannot recommend Matt more than enough.

                                        S Offline
                                        S Offline
                                        SpookDog
                                        wrote on 16 Nov 2023, 18:39 last edited by
                                        #745

                                        @Calum

                                        Can you remember what you paid for, say, the 2 engine casings and barrel & head? Just to get an idea…

                                        C S 2 Replies Last reply 17 Nov 2023, 07:23
                                        0
                                        • S SpookDog
                                          16 Nov 2023, 15:57

                                          Has anyone ever had vapour blasting done before? I got quoted £2 a minute. Works out at £50-80 to get the whole engine, barrel, head, clutch casing, ect done.
                                          Good or bad price?…

                                          O Offline
                                          O Offline
                                          OllieDTR
                                          wrote on 16 Nov 2023, 19:21 last edited by OllieDTR
                                          #746

                                          @SpookDog

                                          Yes but my brother does all my cnc work, skimming heads, making custom parts etc also done me vapour blading on all my forks and casing etc here is some photos
                                          Is so worth it and will smarten up your build! This is for my French import I’m slowly doing

                                          alt text

                                          alt text

                                          alt text

                                          alt text

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