Technical Zone

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  • Suspension Related
  • Exhaust Related
    54 Topics
    493 Posts

    @Titi-DT

    Give us the first letters and numbers of the engine/frame

    3MB
    3DL
    3DB

    Ect…
    It’ll let someone find out the country of origin…

  • Framework Related
    78 Topics
    567 Posts

    @HOTSHOT-III

    I used to go to school with the son of the bloke that owned it (used to be Ballards) he had a mad max kinda buggy made out of an old Austin 1100 we used to drive around out the back! They used to get all their sandblasting done up at Hospital Metalcraft IIRC
    I remember the blue bus they had later on as well for the bikes! Wicked memories! 🙂 …

  • Wheel Related
    74 Topics
    676 Posts

    Hi, yeah, its basically empty inside apart from some dried up old grease, thanks spookdog

    pro-Y0JDCN2N.jpeg
    pro-vmZR3nPT.jpeg

  • Electric Related
    232 Topics
    2k Posts

    @SpookDog

    Sorry late reply, only got round to putting new plug on the other day but yeah no worries man

    Replacement plug worked nicely. I replaced the regulator/rec and starter solenoid with oem parts as well and started lovely off the button. No more clicking from the starter solenoid or dodgy aftermarket rectifier going up in smoke

    Cheers

  • Brake Related
    61 Topics
    420 Posts

    Well I run RS 125 rear calipers on my stock DTRE master cylinder and the brakes are ace.

    On the front I swapped out the mastercylinder with something more appropriate, for said reasons....

  • Engine Related
    490 Topics
    5k Posts

    @Vcelicka

    Happy for you bud! 👍 …

    If you can afford it get a NGK rubber (red) ‘racing’ cap and an NGK Iridium spark plug. They are the Bogs Dollox! 😜 …

  • 1 Votes
    2 Posts
    581 Views

    Thanks Scrim, can you email the dt125r service manual to me when you have time?
    Ta

  • This topic is deleted!

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  • MPH Speedo wanted for 1998 DT 125R

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    13 Posts
    75 Views

    So the converter is only converting to match the KPH face then and not a real converter i.e. really changing to mph. Sounds like I need to find a proper MPH speedo after all! Don't suppose you have a good one you fancy selling? Appreciate your help as you have saved me a lot of aggro. Cheers

  • Dt200r oil pump

    4
    -1 Votes
    4 Posts
    59 Views

    @old-boy-racer

    Don’t forget that the oil pump is calibrated to the carb. It’s the right amount of oil for the air-petrol mix going in. If you put a much bigger carb on I would start thinking about the oil pump…
    Do you get what I’m saying? The pump is running at 50:1 why would premixing at 50:1 be any different? Think about it 🙂 …

    PS what carb does the Dtr 200 run? Cause the pump is calibrated to the carb, not the cylinder…

  • DT125 re wheels conversion issue

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    0 Votes
    4 Posts
    74 Views

    @jarvis2292 they will fit also.

  • Help me

    Moved
    6
    0 Votes
    6 Posts
    108 Views

    @Hybrid_Theory01 It won't be the gearing, it'll be the starter. It's the same as if you bump start your motorbike in reverse then it'll go in reverse.

    So the kick starter mechanism probably isn't correct.

    Although, I cannot visualise how this can be the case. I can't see how the gearbox can be assembled in such a way, so the only thing I can think of is the engine going around the wrong direction.

  • Very Smokie

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    0 Votes
    17 Posts
    184 Views

    @SpookDog
    Now there’s some miles on it We’ve been opening it up a bit. Still running Kmh clocks and I kinda know they will be out but with me pushing 14 stone that’s close to 90kg in new money with jacket helmet boots n gloves it’s revving out in 5th and pushing 9.5k in top well into the 120-130kmh. So I’m well happy. One thing I am really pleased about is it’s still pulling past the power through the gears and it didn’t drop past 8k with a bit of an incline. I’m sure if I was 17 again weighing in at 10 stone wet it would be well into the red.
    The exhaust tone from the full DEP just makes you want to blast it everywhere

  • Engine identification required

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    0 Votes
    1 Posts
    43 Views
    No one has replied
  • Carb coolant lines

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    0 Votes
    3 Posts
    108 Views

    @markus-w cheers mare just wanted to be 100% sure, just cleaned carb today n was full of varnish looking petrol cos bikes been sat ages, jets were blocked too really dirty tbh! Cleaned n refitted but just looped head hose to other head pipe n done same with carb pipes.. I'm in Scotland, cheers mate👍🏼

  • Dt 125 1993 How to derestict

    4
  • Front forks help PLEASE!

    4
    0 Votes
    4 Posts
    117 Views

    @perky Yes, that's what someone said the other day.

    The DTX Runs a Brembo Caliper too, which won't fit DTX forks.

  • forks

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    @calum pulled it out to get a pic ended up pulling legs to see what crack is, dtx stanchions are shorter, the insides are slightly different too ive added a shim/washer ontop of the springs seems to have lifted it abit but still not quite there, not sure how to upload a pic as it says its too big of file

  • Yz mudguards

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    0 Votes
    3 Posts
    94 Views

    Fit fine on the 125 only need drilling if UFO or Acerbis etc

    Put one on my DT200WR but had to cut the back of it down as it hit the rads 😞

  • DT125 R(4BL) Parts no longer available (new)

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    0 Votes
    1 Posts
    101 Views
    No one has replied
  • Tacho reading 1500 when engine not running

    3
    0 Votes
    3 Posts
    102 Views

    Hi, okay, thanks @declan - may try and get it open , knowing there will be a backup plan!

  • Dt 125re No power.

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    0 Votes
    4 Posts
    134 Views

    @Baileyboy2008 well like Calum pointed out there’s no such thing as pinning your valve half way if the valve is have way closed you will get zero power above 6k open her all the way and then see what it does

  • The Library

    5
    5 Votes
    5 Posts
    307 Views

    Yes very rare now and you have to hunt high and low to find anything at sensible prices I'm afraid

  • Dtr 125 pressurizing problem!

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    0 Votes
    9 Posts
    238 Views

    Pressure Cap!

    I wouldn't believe it but I have seen it a few times.

    Always start off with something cheap and look at the more expensive items later.

  • Bike lacks power

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    0 Votes
    27 Posts
    303 Views
  • Still no spark on my DT125RE

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    0 Votes
    9 Posts
    211 Views

    Measure across the pick up sensor. Make sure that you are getting current to trigger the CDI. You will want to follow that pulse from the pickup to the CDI. From the CDI you will see it go to the primary coil. From there it should go to the secondary mutal winding and out to the HT lead. It's as simple as that. Somewhere you are losing that signal.