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Technical Zone

1.3k Topics 11.6k Posts

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  • Suspension Related

    102 771
    102 Topics
    771 Posts
    CalumC
    Due to the exposure that these bearings receive, it's recommended to grease them. The bearings themselves are exposed to a grease nipple so you should be able to just apply grease through their nipples directly.

  • Exhaust Related

    66 581
    66 Topics
    581 Posts
    CalumC
    I can't say I am very familiar with thise pipes sadly. I have been away from the tuning scene for these bikes for many years now. It's been years since I've even ridden my DT to be fair.

  • Framework Related

    87 609
    87 Topics
    609 Posts
    C
    Hi, thanks for the help it's a 1998, the one I have goes into the intake boot with a peice of tube which I would guess and say is around 250mm in length then the chamber sat on top. Will get some photos tonight

  • Wheel Related

    83 749
    83 Topics
    749 Posts
    R
    Just measure from the inside of the fork leg to the rim on each side, +-2mm should be ok I think. If you release the nuts on the axle clamp on the right side (if I remember correctly) and pump the front suspension up and down, and then re-tighten, it should not bind. If the seals wear out too quickly, I would check the surface of the fork tubes, so they are not damaged (pitted from rust, flaking chrome etc.)

  • Electric Related

    271 2k
    271 Topics
    2k Posts
    D
    Not sure if that's correct or pics have worked? If it has then will upload some pics of before I got it and started stripping it. [url=https://postimg.cc/8jyytSNk][img]https://i.postimg.cc/8jyytSNk/20260718-161938.jpg[/img][/url] [url=https://postimg.cc/Vd77D8m1][img]https://i.postimg.cc/Vd77D8m1/20260718-162022.jpg[/img][/url] [url=https://postimg.cc/dLQH21Pv][img]https://i.postimg.cc/dLQH21Pv/Screenshot-20260717-181434-e-Bay.jpg[/img][/url]

  • Brake Related

    70 459
    70 Topics
    459 Posts
    CalumC
    Do you mean dual piston caliper? Or do you want two calipers 🤭 https://ebay.io/m/yOnXyn Or have one made using Nevs design [image: 27961158925_26ab4db984_c.jpg] https://dt125r.co.uk/topic/1343/dt125-front-brake-caliper-bracket-dimensions/2?_=1772783708212

  • Engine Related

    554 5k
    554 Topics
    5k Posts
    CalumC
    Oh that's a relief. You just need to source a new swinging arm bolt? That's so peculiar that it seized that bad! Lots of grease when rebuilding it now I guess.
  • D

    reeds confusion ??

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    5 Posts
    1k Views
    D
    @Calum said in reeds confusion ??: @Dingle74 I'm sure there is information on here about what can be used. Try using the search bar.. good pointe with the searchthing , but the searchfunction is not my new freind :crazy_face: when searching for reeds i get everything from pics of cracked seat to chain and wheel-questions :face_with_hand_over_mouth: so have just skimmed over lightly there was one post though sayin that wr dont fit and poster wanted to show a pic of the difference but sadly it didnt work for him
  • S

    Clutch lever and brake levers

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    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
    774 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?

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    4 Posts
    1k Views
    Louis-DT-WRL
    Other name for it is a jet baffle
  • Y

    Oil Questions

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    40 Posts
    18k Views
    2
    Always used Silkolene Comp 2 which is best oil there is either premix or injector oil.. ÂŁ38.90 for 4 Litres so ÂŁ9.72 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?

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    0 Votes
    9 Posts
    2k 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

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    15 Posts
    3k 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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    35 Posts
    9k Views
    CalumC
    @thechompster And ignitech
  • D

    Stuck seized pivot bolt

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    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
    843 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?

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

    Ypvs barrel removal

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    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?

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    24 Posts
    6k 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
    8k Views
    Irongamer727I
    @declan
  • Glynn123G

    320mm discs that fit DTX Front hub?

    2
    0 Votes
    2 Posts
    971 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”

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    12 Posts
    3k Views
    declanD
    @sgt-robuck-5 ahhh very far then
  • declanD

    General a/f adjustment

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    3 Posts
    984 Views
    declanD
    @finnerz89 yes they are
  • declanD

    Carb settings help

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    4 Posts
    1k 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