Skip to content
Brand Logo

DT125R FORUM
  1. Home
  2. General Discussion

General Discussion

A place to talk about whatever you want
609 Topics 6.0k Posts

Subcategories

  • Please Introduce Yourself Here Before Posting!
    179 2k
    179 Topics
    2k Posts
    CalumC
    Here are the differences in the 3BN Cylinder head [image: 1483566896896-dt125rheads-diffrences.jpg] It'll be marked on the cylinder head. [image: 1663628447669-874e98a1-e604-4e06-9310-d20f77cae655-image.png] The 3BN head is interoparable with the 3MB head, but has a combustion ring which is said to adversely affect performance. Here is a video of the difference between a 4FU cylinder and a Belgarda 3MB00P cylinder. https://www.youtube.com/watch?v=P8okvTxe-Bs Here is a 3MB cylinder. [image: cylinder-1_medium3MB1131100-02_4baa.jpg] [image: 1663628477295-8e899a28-4514-4881-89ec-bfcc824ade10-image.png] You'll see the crankcases are stamped 3BN [image: 1663628512647-b054f520-0af7-4920-948f-cc532b8bbd25-image.png] For the most part you don't need to worry about it, it'll be rare that you'll find a DTR with a 3BN crank/cylinder and most of them will be 3MB cylinders. But it's just worth bearing in mind. There are variations in CDIs and Exhausts which affect the performance, but these are less important as there are aftermarket support that recitfies any loss in performance

  • This section is for members to talk about anything non-dt related. Please keep the theme and language clean to permit viewing in work.
    193 2k
    193 Topics
    2k Posts
    CalumC
    Normally, they just add a throttle stop to restrict the bike, so you can only open it 3/4s of the way. This is what a lot of the test centers do as it's easy then to unlock the bike to full power afterwards.

  • Post your jokes & funny things you find on the web in here.
    16 118
    16 Topics
    118 Posts
    HOTSHOT IIIH
    @Stevie-Wonder Thanks bud Greta (for that is her name as she's noisy, irritating, aimed squarely at the youth market and responsible for thousands of them bunking off school all over the world) cost me half as much as my '93 due to the mileage and had a thick layer of grime all over due to years of grinding commuting. I gave her a scrub with Jizer (several times) and this is what was underneath Here are the part #s for the toolbox and lid, bit pricey IMO and you'd have to get the lugs welded on to a non-e start frame. Be a nice touch if you were getting it powdercoated sometime though https://www.cmsnl.com/products/boxtool_55v2817301/ https://www.cmsnl.com/products/lid_55v2818500/

  • Blog posts from individual members
    15 138
    15 Topics
    138 Posts
    NINJAN
    @Minia Looks nice and beefy and she sounds cool with a deep roar!!! :grinning_face_with_smiling_eyes: :face_with_stuck-out_tongue_winking_eye: :thumbs_up_light_skin_tone:

  • Content Not Suitable for Work!
    0 0
    0 Topics
    0 Posts
    No new posts.
  • B

    This topic is deleted!

    1
    0 Votes
    1 Posts
    10 Views
    No one has replied
  • declanD

    Husky cr 250

    34
    0 Votes
    34 Posts
    4k Views
    CalumC
    @minia Was going to say, your English is superb lol.
  • O

    Beware

    8
    2 Votes
    8 Posts
    993 Views
    2
    I had a couple of bikes stolen in the past with what i thought was secure in a locked garage. Where i live now have to keep my DT in the back garden, not only thousands spent on it is all the hours spent making it how i want it. So have 3 x 16mm hardened chains through 3 different ground anchors and best paddlocks could get. Thatcham approved disc lock as well as a Datatool Alarm with infra red cctv. And just to make sure it's fitted with an Automatrics MTrack 24 hour monitored tracker which is the best tracker out there. So feel quite safe for my little DT, spent lots on security but only need to buy once and will do for years and for many bikes. only cost now is £129 a year for the tracker monitoring. So feel safe from thieving scumbags as i can be, even if anyone enters garden my cctv alerts me so be amazed if precious DT ever was stolen.
  • RandallR

    New owner ... yamaha dt125r 2001

    5
    0 Votes
    5 Posts
    581 Views
    CalumC
    @jamesrandall93 Well first identify if it is the clutch. The clutch can be adjusted in three places. If the clutch was set up properly first, then the order of adjustment is. Clutch Perch lever Clutch Actuator Arm Clutch Push Rod The perch lever is the easiest. and is merely an adjustment at the lever. The knurly knobs on the end of the perch where the cable goes in is what I'm talking about. You merely adjust the cable until there is a few millimeter play on the lever and the clutch is disengaged when pulled in. If you've maxed out the adjustment on the lever, then reset it back and move on to the actuator arm. This is the two nuts on a threaded bar to the left of the cylinder. Again the adjustment is the same. If this is maxed out and it's still not improved, then you need to whip the clutch cover off and adjust the clutch from the pressure plates. Dismantle the clutch cover, drain oil and coolant. Then amend the locking nut and threaded bar till positive engagement and then slacken off. Again ensuring you reset the clutch arm and perch prior. If you still have no luck, then either, the push rods are worn, the ball bearing is worn, or the plates are worn.
  • RandallR

    Dt125r 2000/2001 Not starting

    not starting
    13
    0 Votes
    13 Posts
    1k Views
    CalumC
    The bike should be idling around 1500-2200 RPM's. If it's not, then there is something wrong. It's not a four stroke, it shouldn't be idling around the 1K mark.
  • MightymanM

    Mayday

    5
    2 Votes
    5 Posts
    660 Views
    Glynn123G
    Bet that could embarrass a few modern sportbike riders haha, stunning machines
  • D

    This topic is deleted!

    1
    0 Votes
    1 Posts
    4 Views
    No one has replied
  • gbone85G

    Selling my dt125re Stefan everts mint condition

    Locked
    37
    2 Votes
    37 Posts
    5k Views
    gbone85G
    Sold today Gone to a good home
  • F

    Handguards

    11
    0 Votes
    11 Posts
    1k Views
    F
    Carbon wrap maybe the way to go I think. Cheers fellas
  • R

    TDR starting problem

    30
    0 Votes
    30 Posts
    4k Views
    declanD
    @calum sometimes with a fresh plug mine starts without choke although extremely rare for me
  • S

    DT 125 LC MK1 parts catalogue

    5
    0 Votes
    5 Posts
    733 Views
    S
    much chance of finding it on there as u have of winning the lottery lol
  • FusedF

    Reusable Copper Head Gaskets

    7
    0 Votes
    7 Posts
    1k Views
    Glynn123G
    I used one of the cheap knockoff white ones, cost pretty much nothing and has never leaked, I fitted it using wellseal on both surfaces, never fit a gasket dry.
  • FusedF

    Parts from Portugal

    9
    0 Votes
    9 Posts
    1k Views
    FusedF
    Ok thanks bud
  • F

    Fork protectors

    11
    0 Votes
    11 Posts
    1k Views
    Sgt Robuck 5S
    @finnerz89 thought so XD
  • Sgt Robuck 5S

    Bolt sizes and kits? Stainless steal or zinc and grading.

    3
    0 Votes
    3 Posts
    784 Views
    Sgt Robuck 5S
    @calum said in Bolt sizes and kits? Stainless steal or zinc and grading.: m9VqkNhZ--b0f3UwRxSXqlw" target="_blank" rel="noopener noreferrer nofollow">https://www.ebay.co.uk/itm/M6-6mm-CAP-SCREWS-HEX-SOCKET-ALLEN-KEY-BOLTS-A4-MARINE-GRADE-STAINLESS-STEEL/161017654476?hash=item257d666cccm9VqkNhZ--b0f3UwRxSXqlw Alright will have a better look into it cheers mate!
  • V

    Wr200 forks

    2
    0 Votes
    2 Posts
    649 Views
    Yamboy46Y
    Wanna sell me your wr200 forks? Or straight swap em for mine if the condition is up to par? If your willing to part with a little cash there may be my entire front end up for grabs in the deal which will bolt straight on to your frame with my custom spacers
  • H

    R or LC ?

    15
    0 Votes
    15 Posts
    2k Views
    CalumC
    @harri Yeah as I said to you previously, I really don't know much about the LC's I'm afraid.
  • declanD

    Dtr mileage

    26
    0 Votes
    26 Posts
    4k Views
    J
    Bottem end lasts for ages on theese things.
  • declanD

    BBK opinions

    6
    0 Votes
    6 Posts
    796 Views
    MiniaM
    As Calum said, you'll have to Jet it accordingly to try and get the best amount of mixture possible. But in my opinion it really just depends how much time you're willing to perfect it. If it's just something you want to thrash and aren't worried about the results you can probably skip a couple steps... I've certainly done that.
  • V

    Forks

    4
    0 Votes
    4 Posts
    788 Views
    CalumC
    @vtrn_raptor said in Forks: I got some coming this week and wanted to see how many are running a sm setup with them as I have no clue how to make a bracket Yeah I wrote a tutorial. Follow that and you won't go too far wrong.