Search results

Mini Dirt Bikes & Pit Bikes Forum

Help Support Mini Dirt Bikes & Pit Bikes Forum:

  1. R

    2008 Atomik Blitz 250 review

    For anyone who runs an OKO 26mm, was it really boggy up top? The blitz now has a 26mm and while it starts, revs and pulls smooth as butter in the low and midrange, trying to get it revving in 3rd/4th/5th just won't cut it. Seems like its way too rich on the main jet I pulled the slide on the...
  2. R

    Axle nut tension causing stiff wheels. Any fix?

    Seems to be the brake caliper. Have emailed DHZ about getting a replacement, it was very sticky and replacing the fluid resulted in no rear brakes at all (a couple pieces of rubber came out when flushing the fluid, and it refused to reverse bleed which isn't right. My 160 did it just fine) Have...
  3. R

    Axle nut tension causing stiff wheels. Any fix?

    I'd like to know if anyone else has this issue. Friends new dpro 140's rear wheel got really stiff to the point where it would lock up briefly on rotation. It was fairly smooth but not even an hour into a ride it got pretty bad. At first I thought wheel bearings are shot. I havn't pulled his yet...
  4. R

    DPro 140 front axle not going in properly?

    I think I know what the problem is. I used 2 spacers, looks like you only have 1. There are 2 spacers that are slightly different lengths (about 2mm difference). It could have been that one was from the temporary axle used in shipping? (was doing this with a friend so he could have moved them...
  5. R

    DPro 140 front axle not going in properly?

    I forgot to take pics so bare with me Helped a friend put together his new dpro 140 yesterday and one thing that really stood out was the front axle, it just didn't seem right. I have the DPro 160 and it uses a typical 17mm axle with a nut on the end, the 140 seems very different it has a...
  6. R

    Temporary fix to quiten exhaust

    just gone through this myself. I used one of these, I believe its an airfilter from an air compressor? Shoving that in with the open end facing outwards works great to dampen the sound, as it forces most of the gases to go around the solid cap and into the packing, then back through the...
  7. R

    Mikuni 26mm spitting fuel when kicking. & Tuning?

    mine will consistently spit fuel when kicking, doesn't really bother me all that much but it's not exactly normal bike design to have them do it Plus this bike doesn't even have 2 hours on it yet So jets, whats the best suited for the Z160HO's? it's still a stock dpro with a unifilter. Won't be...
  8. R

    Mikuni 26mm spitting fuel when kicking. & Tuning?

    Would like someone to confirm this, i've never heard of a bike spit fuel because valves were out? That said I have another question with valves, have set them both to 0.003/0.004 respectively but I believe I can hear a little tapping, could be i'm being super paranoid but i'm not sure if my...
  9. R

    Mikuni 26mm spitting fuel when kicking. & Tuning?

    This is the stock carb on a Dpro 160. Noticed from day dot it spat fuel when using the kick starter, doesn't spit fuel when the bike is idling Thought it could be the float plunger sticking, pulled it apart and it operates smoothly. Checked the float height, not sure if i'm measuring it at the...
  10. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    ah yep I understand now. Sounds better than a ball bearing actually
  11. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    I don't quite understand, you mean invert a bolt and drop it into the hole so that the head of the bolt is sitting against the crankshaft, and the thread is facing outwards so that if I use my make-shift puller it's going to be 2 bolts pushing against each other at the thread side? Problem with...
  12. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    because the difference between thread sizes is quite small and the head of any bolt with that sort of thread is going to be too large to fit inside the flywheel hole, let alone the puller over it Someone on another forum suggested dropping a ball bearing in, I reckon that'll do the trick And no...
  13. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    Well I started the bike up and it ran fine, no obvious increase in vibration or noise so the crankshaft is fine, thankfully But since I didn't put the side cover gasket back on properly I needed to pull it off again so figure i'd have another crack at it, here's some new pics Here's the...
  14. R

    360mm shock blown, have a stock nitrous one are the seals interchangeable?

    i've heard of people running air The theory is using air can cause them to rust, and the pressure changes a bit more with temperature But from what I read it's not that big of a deal in practice, it's not like its suddenly going to go bung. I'd expect at least a year or 2 of reasonable use...
  15. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    Nah guys I got the centre bolt off, but I can't seperate the flywheel from the crank. I don't know if a rattle gun would solve it. Was thinking of buying one but cheapest is about $200, way too much for a once-off sort of job. Not often do I need to do this, and the breaker bar has worked for...
  16. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    i've given up. My breaker bar is 1m long, even smacking at it with a 1.5kg steel mallet didn't do anything except absolutely destroy anything i'm using as a spacer. Steel nuts crumble like flour Don't have a heat gun so tried boiling water to heat it, that didn't work Tried tapping several...
  17. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    so they can be stupid tight? to the point where you almost need a sledge hammer on the breaker bar to get them to move? I think i've got this one to budge about half a millimetre so far
  18. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    Well i've already taken to it, hopefully havn't damaged the crank. Anyway the DIY method didn't work Turns out the outer thread on a chain breaker is the exact size, so that screws into the flywheel itself just fine. Went to the hardware store and bought a longer bolt to go right through the...
  19. R

    Zongshen 250cc sprag clutch sticky & slipping, adjust or replace?

    Ok giant breaker breaker bar and steel mallet knocked the centre bolt loose Now to get the flywheel off... Looks like I need a puller but of a different sort. The centre bolt screws down into a thread which sits about an inch below the surface. There's a thread on the flywheel itself however...
  20. R

    Clutch Issues

    i'd give it a ride. Take all the slack out of the clutch cable, then go another 3 turns at the lever. Start it up, warm it up, then paddle it along and get into gear, start riding and pumping that clutch. Chances are it'll free up after you give it a few good revs My brand new Dpro 160 was the...
Top