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Technical Zone

1.3k Topics 11.4k Posts
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  • Suspension Related
    100 766
    100 Topics
    766 Posts
    YzDt85Y
    I found out that the shorter rear axle collar(part numper 90387-202U8) is the same on the Wr200 and Dt. If anyone has that longer collar(part numper 90387-206X8), could you measure its length? And if anyone has a wr200 rear axle, could you measure its length? The rear axle part numbers of the Wr and Dt are almost the same WR axle part numper 3XP-25381-00 DT axle part numper 3BN-25381-00

  • Exhaust Related
    64 569
    64 Topics
    569 Posts
    D
    as far as i m aware there are 3 different types of tzr the first model series 2 (RR) an tzr125r sp i have an exhaust with the code 4DL E46 10 20 what model is it intended for

  • Framework Related
    86 606
    86 Topics
    606 Posts
    CalumC
    That's normal. All DTs are like that. [image: IMG-20251011-114625.jpg]

  • Wheel Related
    82 743
    82 Topics
    743 Posts
    C
    Well it looks like I have found the issue... somewhere along the line someone has pikey bodged the front axle and spacers... What should have had the sleeve spacer which has the 1mm wall which slides in to the 17mm ID bearing was clearly lost and someone had inserted a 40mm x 15mm bearing and used a spacer from an older DT in place of the correct one.. The joys of owning an unknown modified bike! So I am now getting a spacer machined up and I should be good to go! It has only been holding me up since before christmas.. so now I can get the wheels fitted, get the bike back to mine and do the final few bits before MOT.. starting to get excited now Picture of the spacer that I should have had below: [image: 1773302928622-spacer.jpg] Versus the spacer that someone had installed and was somehow using.. [image: 1773303198579-shaft.jpg]

  • Electric Related
    258 2k
    258 Topics
    2k Posts
    HOTSHOT IIIH
    @Kristóf said in POS mode on switch: So does this mean that with the main switch to ON and the lights switch to POS it should light up the auxiliary light even with the engine off? No, lights switch to POS with the main switch to ON only illuminates the auxiliary light/tail light with the engine running because with the switches in these positions, the auxiliary and tail light receive an AC feed from the stator via the yellow/red wire. @Kristóf said in POS mode on switch: I'm asking this because my auxiliary light works when the main switch is to PARK but it doesn't work with the lights switch to POS Yes, this is because with the main switch in the PARK position, the auxiliary and tail lights receive a DC feed directly from the battery via the red wire (which connects to blue/red at the main switch in PARK). It took me a long time to fully understand this so glad I'm able to explain it properly!

  • Brake Related
    68 453
    68 Topics
    453 Posts
    CalumC
    Yeah that sounds like a good idea and should be easy to swap the wheels over without too much faff!

  • Engine Related
    541 5k
    541 Topics
    5k Posts
    CalumC
    Not familiar with a 1994 DT175 (I presume this is from the Asia (Far East) market). The oil light will just be for the two stroke. There are no sensors that do gearbox, the most you get is a Neutral Light sensor (if you're lucky). For the gearbox oil, the only sensors you see are with your eye balls and the oil sight glass. I can't 100% say this is the case, but I say it with high confidence that this will be the case. Hopefully that's useful. Calum
  • S

    Clutch lever and brake levers

    11
    0 Votes
    11 Posts
    2k Views
    F
    I've got some eBay specials on mine, they were listed for the DT230 but fit ok. Might fit the DTR as well?
  • declanD

    Rad caps aren’t universal?

    9
    0 Votes
    9 Posts
    1k Views
    declanD
    @NINJA not a clue but luckily it’s not a problem
  • B

    Bike vibrating when revved

    2
    0 Votes
    2 Posts
    660 Views
    CalumC
    Either the balancer shaft, the engine needs timing. Or the clutch hasn't been balanced. The clutch needs to be reassembled in the correct sequence. See my kickstart conversion guide.
  • D

    What is this plastic part in the carb called?

    4
    0 Votes
    4 Posts
    915 Views
    Louis-DT-WRL
    Other name for it is a jet baffle
  • Y

    Oil Questions

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    0 Votes
    40 Posts
    14k Views
    2
    Always used Silkolene Comp 2 which is best oil there is either premix or injector oil.. £38.90 for 4 Litres so £9.72 per Litres https://www.ebay.co.uk/itm/Silkolene-Comp-2-2T-2-Stroke-Motorcycle-Engine-Oil-4-Litres-4L/161276818881?epid=10017008607&hash=item258cd8f5c1:g:NEQAAOSwcwhVP4E0
  • B

    Disconnect oil tank?

    9
    0 Votes
    9 Posts
    1k Views
    declanD
    @glynn123 they can fail although it is pretty rare I think they have way more positives I’d never disconnect mine I wish all bikes came with an optional oil fed system
  • B

    Few problems with my dt125re

    15
    0 Votes
    15 Posts
    2k Views
    CalumC
    @bradt The system will incur a known internal resistence with itself, known as impedence. This can be measured. It should fall within a tolerable range, as described by the technical specification of the item. Compare your component against this documentation to ensure the item is within tolerance. Chances are, if it is, then the item is not faulty.
  • T

    Power valve issue

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    0 Votes
    35 Posts
    7k Views
    CalumC
    @thechompster And ignitech
  • D

    Stuck seized pivot bolt

    15
    0 Votes
    15 Posts
    3k Views
    FusedF
    On my first DT after several days of trying to remove the bolt, I eventually got it to budge by doing a continuous heat cycle on it, and going at it with a club hammer and drift. When you thinks it got to be hot enough by now...give it another couple of minutes with the blow torch.
  • B

    Ypvs cap broken

    2
    0 Votes
    2 Posts
    704 Views
    CalumC
    It'll need ally welding if you have the pieces, otherwise you'll have to get another one.
  • Glynn123G

    DT125 Front brake caliper bracket dimensions?

    4
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    4 Posts
    2k Views
    CalumC
    @glynn123 Only messing mate. Was on here though.
  • olliedtx12sO

    Ypvs barrel removal

    4
    0 Votes
    4 Posts
    1k Views
    Sgt Robuck 5S
    @olliedtx12s If you need to locate any specific parts click on this and I suggest getting a haynes manual Found on here Amazon
  • declanD

    What hearing yall running?

    24
    0 Votes
    24 Posts
    4k Views
    CalumC
    @finnerz89 One day for sure mate...one day.
  • FusedF

    5 wires to 3

    4
    1 Votes
    4 Posts
    1k Views
    FusedF
    Thanks Calum, I'll shelve that idea for now then..
  • declanD

    Does a rich pilot effect riding

    38
    0 Votes
    38 Posts
    6k Views
    Irongamer727I
    @declan
  • Glynn123G

    320mm discs that fit DTX Front hub?

    2
    0 Votes
    2 Posts
    826 Views
    CalumC
    Doubtful, but an adapter shouldn't be too hard to make. Just make sure you centralise the caliper over the disc.
  • declanD

    2 stroke timing “stator”

    12
    0 Votes
    12 Posts
    2k Views
    declanD
    @sgt-robuck-5 ahhh very far then
  • declanD

    General a/f adjustment

    3
    0 Votes
    3 Posts
    836 Views
    declanD
    @finnerz89 yes they are
  • declanD

    Carb settings help

    4
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    4 Posts
    943 Views
    declanD
    @oldman well it looked 40 years old and was visually worn out looked well used if I tried to ride the bike to set off I’d have to redline and ride the clutch then soon as I shift out of 2nd the bike would lose all power and come to a stop then would bog and stutter it seems better with the carb on the garden not tested the street yet
  • SpannersS

    3BN CDI

    4
    0 Votes
    4 Posts
    1k Views
    J
    Why not make adaptor/converter loom, between the cdi and the main loom, so you can connect everything up without molesting either part.