1. If you are having issues logging back into the forum since the s/w transfer please use the CONTACT US in the bottom left corner of the main page. This will get you in contact with someone who will help you log back in.
    Dismiss Notice

Going to try the new Hummer G4

Discussion in 'General Chat' started by rodbox5, Oct 4, 2007.

Mini Dirt Bikes

Help Support Mini Dirt Bikes:

  1. Jun 29, 2009 #681

    Linkavitch...

    Linkavitch...

    Linkavitch...

    Member

    Joined:
    Jun 15, 2008
    Messages:
    21
    Likes Received:
    0
    xr250 conversion

    Ive seen someone put a zongshen 250cc in a xr200 frame, the mounts were all the same...i cant find the website now but ill try to find it and I might have a look at my mates xr250 and compare it to my tomahawk kx 250.
     
  2. Aug 22, 2009 #682

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    Hey guys

    Need some help on adjusting the rear suspension it is really soft any1 know how ?

    Thanks
     
  3. Aug 24, 2009 #683

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    You need to get yourself a rear shock spanner and tighten down the spring. Loosen the top lock-ring first - then tighten the bottom ring to compress the spring. Don't tighten down more than a three full turns - otherwise you are exceeding the disign parameters of the spring. Once it's adjusted down - re-tighten the lock ring on the top. If you don't want to buy a shock spanner - you can use a hammer and punch - but this will ding your locking and adjustment rings (most folks don't worry about it).

    There are also dampening adjustment screws on the rear shock to adjust the compression & rebound once you've got the ride height set up OK.

    If these two adjustments don't work well enough for you - then you'll have to remove the rear shock and buy a custom spring. Most suspension guys who do MX bikes will be able to get you an aftermarket heavy duty spring - but they are expensive!

    If you look up "Adjusting MX Suspension" on Google, there are a number of articles on how to set your shocks and ride height correctly.
     
    coolmodee01 likes this.
  4. Aug 24, 2009 #684

    Linkavitch...

    Linkavitch...

    Linkavitch...

    Member

    Joined:
    Jun 15, 2008
    Messages:
    21
    Likes Received:
    0
    rear shock

    on my shock, i rebuilt it with thicker oil, i cant remember what it was, but that and a few turns on the spring, it was handling and dampening like a dream, its worth the time taking the shock apart and replacing the oil. if you need instructions on how to dismantle it just message. good luck
     
  5. Aug 25, 2009 #685

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    Cheers linkavitch yeah got my old man to have a look at it and we soon worked out what to do .

    Thanks
     
  6. Aug 29, 2009 #686

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    Thanks also rodbox didnt see ya reply there
     
  7. Sep 3, 2009 #687

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    Need a bigger front and rear sprocket wondering where i could possibly get them from?
     
  8. Sep 7, 2009 #688

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    Hi Mate,

    You can order them mail order from here.

    Saturday Night Cycles Home

    Be sure to give them the specs for the chain size and sprocket mounting holes - since they sell a lot of different models.

    I'm currently using a 17 tooth front sprocket and a 56 tooth rear sprocket (purchased from SNC) and they work really well.

    You will have to either remove or shorten the chain roller guide, since otherwise the chain angle will be too steep with the bigger sprocket.

    Hope that helps.
     
    Last edited: Sep 7, 2009
    coolmodee01 likes this.
  9. Oct 4, 2009 #689

    cujo

    cujo

    cujo

    Member

    Joined:
    Mar 27, 2008
    Messages:
    9
    Likes Received:
    0
    Location:
    Melbourne North
    KUDA Pro after 2 years - SMOKIN!

    OK all,

    Just finished preparing the Kuda Pro ( HUMMER 250cc OHC Zongshen)for this coming spring and found a few things that needed doing.


    Top suspension frame mount had several cracks around the welds and needed rewelding & strengthening
    Top head stem bearing needed replacing
    Changed the handlebars - finally after 2 years and bending them back too many times
    Adjusted the valve clearance 0.05mm
    New Battery
    After reassembly chased an electrical problem that ended up being a connecter pin on the CDI
    Changed oil
    Checked and started OK, let warm up and a quick ride around the back and put it away for the night.

    So my problem started once I changed the oil and started the bike next day.....Ploombs of white smoke for a few minutes and of course a bit of a miss at medium revs. Dissapointed, put it away.

    CAme back to it in the afternoon and tried again and the smoke was hardly noticable after a few seconds and is now almost non existant, except under hard acceleration

    I guess this may need a top end strip down, but in this air cooled motor, is there a possibility that it may be just a head gasket or someting else?

    PS are there any manual showing torque settings for the bolts for this engine?

    Rob
     
  10. Oct 5, 2009 #690

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    Hi Cujo,

    You may have just had some water condense out in your carbie whilst the bike was laid up.

    If not, a new 250 Zongshen head gasket is available from just about anywhere these days and changes over with no hassle.

    If you don't have the torque for the head bolts in your owners manual, there are a few tech threads on this site that will give you the torque values you need. Be careful not to go over the required torque values, since the head bolts stretch easily.
     
    coolmodee01 likes this.
  11. Oct 31, 2009 #691

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    To rodbox

    The 56 tooth rear sprocket off saturday night cycles will that fit my bike alright and if so will the D.I.D racing chain of there site fit it.

    THanks
     
  12. Nov 2, 2009 #692

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    Hi Johnny#1

    Yes, the sprocket will fit just fine.

    There are a couple of notes however,

    1. You will have to extend or remove the chain roller from underneath the swing arm, or else the chain angle will be too steep. I've now removed mine and it hasn't caused any problems.

    2. I'd also buy a 17 tooth front sprocket - otherwise the gearing will be really low. I now use the 17 tooth front sprocket for general riding and a 16 tooth front sprocket when riding in steep hills.

    3. DID standard chains are great for this set-up - don't waste your money on the more expensive O & X ring options.

    4. You need to check chain size. I have a G4 hummer which is now a few years old and uses a 428 gauge chain - I believe the newer models have changed to a stonger 520 gauge chain. Check before you order the sprocket - you have to make sure that the chain and both sprockets are all the same gauge.

    Hope that helps.
     
    coolmodee01 likes this.
  13. Nov 2, 2009 #693

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    cheers rod,

    I got the g4 aswell shes a couple of years old but still goes great. what would the 47 tooth sproclet be like ?
     
  14. Nov 9, 2009 #694

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    Hi Johnny 1
    You divide the number of teeth on the front sprocket into the number of teeth on the rear sprocket to work out the sprocket drive ratio.

    If you have a 16 tooth front sprocket and say a 48 tooth rear sprocket, that works out to a D/R of 3:1

    If you have a 17 tooth front sprocket and a 56 tooth rear sprocket, that works out to a DR of about 3.3:1

    If you drop your front sprocket to a 15 with the 48 tooth rear - you get a D/R of 3.2:1 - which is almost the same D/R as the 17/56 setup.

    I find that my set-up is OK for most places I ride - but then I can change the front sprocket down to a smaller number of teeth if I want to ride some seriously steep hills.

    I only chose the big 56 because changing the front sprocket quicker & easier than changing the rear - plus front sprockets are cheaper. I also have to admit that the 56 tooth rear sprocket looks cool anyway!.
     
    coolmodee01 likes this.
  15. Dec 4, 2009 #695

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    looking for a sticker kit for my bike any suggestions where i could get one?
     
  16. Dec 4, 2009 #696

    Johny#1

    Johny#1

    Johny#1

    Active Member

    Joined:
    Nov 10, 2007
    Messages:
    29
    Likes Received:
    0
    Location:
    Scamander
    and also rod i was about to buy a set of sprockets from snc but website would not work so my mate has given me his old sprocket off his crf 230f still good condition, was wondering if i took it to my local fish quip could they drill out the holes so it would fit my hummer, but would it fit? and if does you reckon i could just buy a standard d.i.d chain to fit?

    Thanks
     
  17. Dec 7, 2009 #697

    rodbox5

    rodbox5

    rodbox5

    Well-Known Member

    Joined:
    Oct 3, 2007
    Messages:
    322
    Likes Received:
    8
    Location:
    Perth
    I'm not sure what gauge chain that Honda takes mate - it could well be a 520.

    Also, the machining for additional bolt holes has to be spot on - or the sprocket wont run true.

    If you can't get service from SNC - I'd buy one from Atomik. They do nice sprockets in both 48 tooth and 52 tooth - which should do the job nicely. Just be sure to specify your correct chain gauge.

    With regards to stickers - try BTO sports at this web address:

    Product Search - BTO Sports

    These guys stock all the professional kits the race teams use. I got a team Kawasaki kit - which was really smik, high quality and will never peel off.

    Good luck with the job.
     
  18. Feb 6, 2010 #698

    Boy46

    Boy46

    Boy46

    New Member

    Joined:
    Feb 6, 2010
    Messages:
    2
    Likes Received:
    0
    Hi,
    I'm new but have read this entire thread and recently bought and received the new 'atomik kuda pro'. In other posts i've seen and read that the bike came with either a Loncin or Zongshen engine but...my engine had the name "Atomik" on it. Have they started making there own engines or did they just put there name on someone elses?

    Soz cant include pics coz the file is too big and the max you can upload is 97.7kb for some reason.
     
  19. Feb 6, 2010 #699

    DvDRip

    DvDRip

    DvDRip

    Mini Riders Legend

    Joined:
    Jan 10, 2009
    Messages:
    3,382
    Likes Received:
    46
    Location:
    Melbourne
    nah man all china bike sellers put their logo on the engine, it's still a loncin
     
  20. Feb 6, 2010 #700

    Boy46

    Boy46

    Boy46

    New Member

    Joined:
    Feb 6, 2010
    Messages:
    2
    Likes Received:
    0
    cool thanks man
     

Share This Page



arrow_white