Fastest/most reliable bike motor?

Discussion in 'General Questions' started by tfhudson, Nov 4, 2007.

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  1. tfhudson

    tfhudson Guest

    Hi guys,

    I'm new to this site (from Arkansas), since my 70cc 2-stroke kicked the bucket tonight. I'm seriously considering selling my car and riding a motored bike everywhere, if I can find a setup that is (relatively) maintenance free.

    Is there a general consensus among you regarding what is the most powerful/ most reliable (frame-mounted) set-up on the market?

    On another note, (since I'm not totally opposed to motorcycle registration), is anyone out there mounting larger/more powerful motors (ie. >50cc 4-stroke or >70cc 2-stroke) on their frames with relatively little difficulty? In particular, do most pocketbike engines require a custom-fabbed mount (and are they reliable?) What about go-cart engines? Others?

    Thanks a million!

    Last edited by a moderator: Nov 4, 2007

  2. Alaskavan

    Alaskavan Guest

    You might find registration tricky with no VIN#.
  3. JemmaUK

    JemmaUK Guest


    With the rackmount kits (such as GEBE) there is pretty much only a limit on single cylinder compatible with a 52 or 76mm clutch. So theoretically you could slap on the rotary engine listed somewhere on this site or the 14hp polini engine... true, you would probably end up wrapped round a chrysler in short order... but nothing is perfect. The GEBE system can be, with a little fiddling, frame mounted as well.

    As far as reliablity goes its a function of the basic framing and wheelset used, the owners ability technically, and how well the machine is put together and looked after. You will find that the more extreme a build is, the more likely it will be to have problems.

    On the maintainence question - to be honest if that is your over-riding issue I would go with the GEBE system as out of the box it is a whole lot easier to set up than the joys of flapping chains and sprockets...

    hope that helped :)

    Jemma xx
  4. beast775

    beast775 Guest

    reliability vs power

    these are bicycles first !anything over 30 miles an hr is quite a beast ie upkeep, reliability, brakes.if you want simple reliability get a gebe,if set up properly you can drive alot of miles no problem.i use a 43cc staton chain drive and spent alot of time on the install and would drive it 3000 miles,i just might 1 day:cool:there is good kits out there just know what you want and buy it!
  5. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:Tom, since you already have a frame-mount setup, check into the GRUBEE WHOPPER STOPPER setup. give careful consideration to use the venerable HONDA GX50 instead of the Chinese engine in the kit.

    Also, read up on Dax's new engine setup, said to be powerful and reliable.

    I would not consider a pocket bike engine for reliable transportation, because they have not YET been proven to be dependable on a bicycle. this engine is also very wide, because of its clutch and pull start mechanisms. It would probably work well on rack-mount installations, but not on the GEBE rack, because of excessive power.

    there have been many frame-mounted bicycle engines throughout the century. Choosing the most powerful/most reliable is a loaded question, and bound to elicit many opinions. some might choose the WHIZZER engine, others the BRIGGS & STRATTON or the HONDA GX 100, or the newer LIFAN 50cc-110cc engines. All are heavyweights, some weighing over 40 lb.

    The terms "most powerful" and "most reliable" are rarely used together. And as mentioned previously, with great power comes great responsibility in maintaining the machine.

    the pocket bike engine is very wide, because of its clutch and pull start mechanisms. they'd probably work well on rack-mount installations.

    I'm in the midst of installing an ebay 49cc pocket bike engine and a Polini 40cc Italian pocket bike engine on rack mounts for my cruiser bikes. these engines bolt onto the STATON friction and gear chain drive setups. this should be a good marriage of components.

    Last edited by a moderator: Nov 4, 2007
  6. tfhudson

    tfhudson Guest

    Hi Jemma,

    I set up my chain-drive 80(70?)cc with no real difficulties, and have had relatively little problems from the drivetrain.

    Frame-mounting an engine that is not really intended for that purpose, or doing so with a kit that wasn't intended for that engine, is what intimidates me, as I have relatively little tech expertise and only a few tools.

    But I DO have a Dremel! So anyone with some experience mounting big, fast, high-quality engines on the frame, I'd love to hear how it went!
  7. tfhudson

    tfhudson Guest

    Honda GXH50 vs Mitsubishi ENCORE vs Titan?? These all seem to be great engines.

    People have frame-mounted Honda GX100's and Lifan 110cc engines? What mounts and drivetrains for these guys?

    Oh, PS. It's not my motor that kicked the bucket last night after all. After I went to look at it, I saw it had SHEERED the vertical frame tube in half. Pictures in a few minutes.
    Last edited by a moderator: Nov 4, 2007
  8. Alaskavan

    Alaskavan Guest

    I'm working on a frame mount Lifan, but my frame in no way resembles yours. The engine's about 12" wide, so you would have to use some serious tools (and a good imagination) to put it on a conventional bike. And at 40+ lbs., rack mounting wouldn't work well either.
    Last edited by a moderator: Nov 4, 2007
  9. Alaskavan

    Alaskavan Guest

    TF, to answer your guestions posted elsewhere:
    The Honda GX50 would seem to be the best combination of power and reliability. I run a Mitsu, and while it has handled all the abuse I have given it, if you are determined to climb steep hills and/or attain illegal speeds, 2.2 horse is probably not enough for you. The Titan - has anyone besides Dax tested it out?
    My undertanding of the Staton Chain drive system is that it was developed initially for commercial/industrial use (powered wheelbarrows), hence it's reliability (it just happens to work well on Motored Bikes). Staton also sells rear wheels for use with the system (fewer spoke issues). And they sell a variety of gears, so you should be able to find the right combo of speed and power.
    From what I've read, the chains that come with the Happy Time kits stretch. There are threads on the subject.
  10. dbigkahunna

    dbigkahunna Guest

    First what do you want to do? Go really fast and upset cops or travel long distances with a heavy load? Daves Motors has 2 strokes less than 49cc turning out 3-5 HP. How reliable are they? I know guys who can tear up a Ford Powerstroke in 80K miles. I have one I use that has over 300K. But I do not abuse it and maintain it. I do not drive 75 pulling 12K pounds. You can get the best engine in the world and abuse it and it will not last any time. You can take a cheap engine, treat it well and it can last a long time. I am partial to the Tecumch 49cc TC series. Tough, reliable and proven. Plus you can pick them up on Ebay for 50-60 bucks.
  11. Alaskavan

    Alaskavan Guest

    Well put.
  12. tfhudson

    tfhudson Guest


    Great info! If I can wait for the Titan, I will probably do it.... The Honda may be calling my name though...

    And HuaSheng? How does that fall into the mix?
  13. tfhudson

    tfhudson Guest

    I'm looking at ditching my car and commuting on a motored bike. My commute to work necessitates going on major urban roads in heavy traffic. It's my philosophy that in certain situations more speed and power = safety. It improves my ability to travel with the flow of traffic, meaning that I have to interact with fewer cars on the way to work (because not as many are passing me.)
  14. Alaskavan

    Alaskavan Guest

    HuaSheng.... I am unfamilliar with them. I try to avoid Chinese products.
  15. Egor

    Egor Guest

    If I was going to ride a Moped every day to work I would get a Tomos. I like the Targa LX. The advantage to a Moped, and the bikes we are building fit into this catagory, is the insurance and registration and fuel savings. Have fun Dave
    PS: They have cool hop up stuff. Just Google Tomos Targa LX, looks cool.
  16. tfhudson

    tfhudson Guest

    That Targa LX looks SWEET! It's just a little out of my price range for the moment, though. :/
  17. dbigkahunna

    dbigkahunna Guest

    If you are going to mix it up with heavy traffice then you want to go fast? Better worry about the brakes more than the engine. I have absolutly no desire to be going really fast in heavy traffic on a bicycle. And remember, these are motor assisted bicycles. I know age will make you do things that you reflest on later and think how low in intelegence you were at the time. I would look for an alternative, though maybe longer in distance to try and avoid the heavy traffic. If you do not see bicycles on your comute, well there may be a reason. All opinion.. You are full grown.
  18. tfhudson

    tfhudson Guest

    Traffic along unavoidable roads to work moves along about 40 mph. There are no shoulders or sidewalks for much of the way. Would you rather go 25 or 35?

    Even if you would rather go 25, would you want your engine to already be topped out at that speed? This is a matter of economics. I have to go to work to pay the bills. Even then, I sometimes don't have enough money to make ends meet. I have to cut money somewhere. And I have professional ambitions that require me to use time (I could otherwise use to make overtime wages) to accomplish things that will hopefully pay off in the long run.

    Safety, then, is contextualized. I would rather die young trying to make the best of my life than die old not having put my talents to use. If it's foolish, talk to the puppeteer upstairs, and tell him I'd like to have a word with him too, if he dares show his face 'round these parts. :rolleyes: ;)
  19. Tf, one other consideration is suggested since you mentioned you're not opposed to something wth licence and registration ... I got a new 35mph scooter delivered to the door for under $500 ... 50cc, one speed ,no variator , but bright yellow, headlights, turn signals, horn, fuel gauge , dimmer indicators, kill switch, electric or kick start .... common chinese stuff on the internet .... since any of these builds easily amounts to over $750 or more when you want it to look good, why not just buy a scooter if the 'thrill of the build' isn't exactly the highlighted concern ? (Just re-read this post and it reads like I'm trying to sell you one ! ... I mean look under online companies like Geely, Neo, ... back when I bought mine it was from an Ebay storefront .... now they wont sell to Ca. because its a Vinned vehicle and a 2 stroke .. but a lot of States do permit internet 2 stroke sales and truck delivery to your door
    Last edited by a moderator: Nov 6, 2007
  20. ez dave

    ez dave New Member

    reliable bike engines

    hey, this is a question lots of people are asking, i always try to steer people towards the 4 strokes, people are usually wanting to ride here in fl for more than 30 minutes at a time. i'm a fan of the ez drive motor kit though spendy 600.00. sooooo in reply whatever you can afford in a 4 stroke is imo the best way to go, also try not to exceed your own mechanical abilities.then maintenance will be a breeze.
    stewyou likes this.