Adelaide rat bike

Discussion in 'Introduce Yourself' started by Phil_McCracken, Jun 3, 2008.

  1. How ya goin, I'm Phil from Adelaide Australia, below's a couple of pic's of my raty motorized pushy.
    It all started around chrissy time when I ran out of strikes on my drivers licence and copped a 6 month suspension, 40 km round trip to work and bugger all puplic transport, was time to get fit, lol.
    I cycled for a few months, 240km a week (work saturday mornings to) built up some killer legs, lol, but every morning I would be past by this 60 year old bloke on a mountain bike that sounded like a badly running lawn mower.
    Bit of searching on the net got me the chinese 66cc engine and I picked up a alloy framed mountain bike with araya rims, shimano gears, cranks etc, with flat tyres, broken cables no seat for 40 bucks at crime convertors.
    I pulled the motor down before I fitted it, had an idea it would be fairly average engineering wise as the cost was so low, took it down to a mates engine recon shop, cleaned up the ports faced the head, top of the barrel and the cases and made up some new studs.
    Set it up in the frame with 2 3/8 exhaust clamp up front and modified the rear mount to get it lower in the frame, that also got rid of the long studs for the mounting, chucked on a 8mm top gun lead and NGK plug, at first was a bit disapointed, ok I had to bed the rings but it struggled and sounded off at all engine speeds.
    Mucked around with the carb a lot, probably annoyed my neighbours the most with the laps around the block, lol, jet changes and moding the needle got some small results but because of the poor quality of the carb was a loosing battle.
    Then I got hold of a carb from a Yamaha Zuma scooter, the differance was night and day soon as I fitted it, instant response, idles smooth and easy starting.
    It has now done almost 2000 km with no issues cruiseing at 38-40 kmh, I have had it up to 58 kmh, it would make 60kmh (around 35 mph) but it was reving hard and didn't want to grenade it.
    I am runing it on 98 and Belray MC1 at 30:1, is expensive brew, but after the 4th barrel off inspection last week, (see sealant in pic's lol) it is worn (12 thou piston to bore clearance :rolleyes: ) but just keeps on going.

    Anyway sorry for the boring epic dribble on me first thread.

    Cheers Phil

    Attached Files:

  2. aussieboy

    aussieboy Member

    hey great to see another aussie
    im from newcastle nsw

    where did you get your engine kit

  3. fetor56

    fetor56 Guest

    G'day man & welcome to MBc.
  4. Got it from Zbox, their service was great, though it took a little while for startrack to deliver it.
  5. fredie

    fredie Member

    interesting concepts . but it might be agaist the law
  6. Cheers Fetor, these are getting popular in Adelaide aye? I been seeing more and more around.

    Yes Fredie it is a possibility that doing 40kmh on a pushy is illegal, but I have seen the fuzz many times to and from work and they don't seem to be bothered about me, I guess I have a good hat, wear a Hi Vis vest, and I don't ride like a muppet.
  7. brendonv

    brendonv Member

    well i got a Ryobi 30CC whipper snipper ( americans call em weed wackers haha ) motor on mine and i get up to 50km/h, for a lil motor it gets some good speed, probably coz i weigh 48kg ( 14yrs old ), if u go into the gallery u can see my pics of my ride. Its friction mounted and the spindle was made on the lathe by a friend. Well ive only been riding for 3 days now and haven't seen a cop once, i try to keep of the main roads ( if they pick me up im fudged ) my motor is like 350watts and in 14 ( gotta be 16 in Perth ). hopefully they wont notice, my friend brought up a good topic though. They sell those motorized skateboards and there way over 200watts and the cops dont seem to mind so yeh.

    Well hope u stay here, one more aussie here!


    From Brendon.v
  8. graucho

    graucho Active Member

    Hi Phil. Welcome to MBc!
    Nice carb modification.

    If you search and are unable to find your answers, don't hesitate to post your question. Someone will steer you to a link, or reply to your question. Were here for each other! Enjoy! :grin:
    You may have seen this, but here's a great MBc starter "link" to keep you motoring.
  9. Bogaurd

    Bogaurd Member

    Hey Phil,
    Where abouts in Adelaide are you from?

    Nice work with the scooter carb! :grin:
  10. Thanks for the welcome everyone,
    I'm from Paralowie Bogaurd, and you? another Adelaideian?
  11. Simon_A

    Simon_A Member

    Welcome to the forums bud.

    Cool, I found a member from my side of town.

    That carb conversions sounds like a great mod too.
  12. BoltsMissing

    BoltsMissing Active Member

    Welcome to MBc Phil,.

    All the Best

  13. dbigkahunna

    dbigkahunna Guest

    Welcome to MBc from the Giant Side of Texas!
  14. djase10

    djase10 Guest

    G'day Phil from Henley Beach.

    addictive is the word!
  15. Irish John

    Irish John Guest

    Welcome aboard Phil. Adelaide's where the motored bike scene is at. I'm up near Byron Bay and have found this forum the best ever for finding things out.
  16. Thanks again for the welcome guy's, yeah Adelaide's motored bike scene is getting huge.
    I have seen 6 differant guys on the way to work, two I have spoken to and they both bought complete bikes from a guy in Seaton, he advertise's in the trading post, ready to go bikes with ZBOX engines, he has photo ads almost every week so I'm guessing he does alright out of it and theres more around than I've seen.
    A couple of weeks ago a mate and I where sitting out the front of the Colonel Light having a few beers when this dude came flying down the road on a MB, was doing 60km easy, lol, sounded like it may have had a chamber on it, somone from here???
    Simon_A the yamaha carb is the best thing I have done, it wasn't a performace mod as such but a "lets get it running right" mod, it's a "real" carb compared to what comes with the engine, cable choke, idle mixture adjustment, 5 needle settings etc. and pitmans carry gaskets, needle and seat etc. in stock.
    Haven't done an acurate mileage test but does 80 - 90 Km from half a tank of juice and the smooth crisp runing of the engine when cruising has lowered the noise from the chain and primary gears. Definatly something that has helped this little motor last as long as it has.
    Byron's a great place John, great country side to, been out to Mount Warning a couple of times, used to be camp ground out side of Murwillumbah called Macca's, run by the hippies, lol, don't know who the land belonged to but you could camp there for 2 bucks.

    ciao Phil..
  17. jared3377

    jared3377 Member

    Welcome to MBc!!! We're glad to have ya, mate!
  18. Irish John

    Irish John Guest

    Well Phil the guy in Adelaide going supersonic might be Djase10 who, if I remember correctly, reported such speeds a while back. I can't believe the HT is capable of such speed but you've corroborated it. One day the bearings will fail and the piston will end up in Woomera! Anyway you Adelaide guys could be quite frightening if you all pulled up at the pub together. I've only managed to arrive at the Billinudgel Hotel with 4 motored bikes (all built by myself) and the real bikies were there on the Harleys. It was very funny cos we all ordered a botlle of Bundaberg Ginger beer each and then sat on verandah pretending we were tough guys. The locals loved it and the bikes were highly amused.
  19. Happyzeds

    Happyzeds New Member

    Wow - I did get to 41kph on my 4 stroke chopper but still running in - the bike likes 25kph best at the moment. Still all stok standard.

    I'm in Salsbury south (mosquito Lakes - lol)
    Happy Zeds
  20. djase10

    djase10 Guest

    Hi all
    Yep can be done (at risk of engine failure with 44T),
    so i would'nt do that again until i had a smaller rear sprocket,

    a 66cc with a 36T rear sprocket is where I want to be>>

    I'm content with 47K/mh with the 48cc im running at present, & it LOVES it

    And waiting for parts to rebuild the 66cc AGAIN.

    spookytooth charge $16 to post a BASIC 36T (have to drill holes yourself) sprocket to Adelaide,
    So about $30 total-- Pretty good i reckon .

    Just take it easy mate (I KNOW ITS HARD), but your bike lets you know when its comfortable to go faster.
    Regards Jase,
    Last edited by a moderator: Jun 12, 2008