why i wish i would have never bought a bicycle engine kit

Discussion in 'General Questions' started by steveadicks, Dec 24, 2006.

  1. steveadicks

    steveadicks Guest

    1. The front motor mount broke after a few days. cost me $20
    2. The spokes broke twice $50
    3. The bolts all come loose and fall off. $10
    4. The weel popped off.
    5. The muffler fell off, twice, and when i was fixing it it burnt my arm
    6. Gas leaked all over my garage when i was trying to fix it.
    7. You really cant turn off the gas, so it floods the carb, and is very hard to start up in the morning.
    8. You get oil all over your hand, cloths, and houce when you fix it, because all the seals suck and it gets all over the engine, and all over your bike.
    9. My bike broke down on me almost every time I rode it.
    10. these are not a cheaper form of transportation, they break down, and cost alot to fix. A scooter is alot better.
     

  2. bird

    bird Guest

    that kinda sucks. where did u get your motor it sounds like the first one i had which came broken cuz someone dropped it in the mail.
     
  3. etheric

    etheric Guest

    yikes. sounds like a test of patience and endurance. i don't think yours is a very common experience, but i feel for ya.
     
  4. Tom

    Tom Active Member

    Wow, none of those things have ever happened to me.

    I think it depends on which kit you get, how you install it and what bike you install it on. My bike only crapped out on me once when I first put it together and the chain fell off. That was about it.
     
  5. gone_fishin

    gone_fishin Guest

    yup, steveadicks, it's too bad you've had such an un-fun experience...no offense intended, but FYI for others who read this...many of your woes can prolly be chalked up to lack of detailing during initial install.

    i have had no bicycle-related problems, nor have i got a floor-full of fuel, not a drop at all. i've sed before these chinese engines aren't for everyone, they're a bit tricky to install correctly and to maintain properly.

    anyone who doesn't have at least a lil "gearhead" in them should stick with an easier to run rack-mount kit.
     
  6. davidsis

    davidsis Guest

    Broke azz enginge

    Hey Steve. What are you going to do with your engine? Want to sell it. By the way What does your screen name Steveadicks mean anyway.
     
  7. steveadicks

    steveadicks Guest

    i was just really pissed off when I wrote that, I had just gotten it fixed, and it was sprinkling and I decided to take it for a spin, and when I was riding back it started poaring. Now it wont run, I really liked riding it, and i hope to fix it.
     
  8. gone_fishin

    gone_fishin Guest

    :lol: :lol: i love it!!! :lol: :lol:

    group therapy for motor'd-bicyclists 8)
     
  9. davidsis

    davidsis Guest

    Wont run

    Maybe you just do not have it choked or something. Did you put oil in the gas when you built it?
     
  10. davidsis

    davidsis Guest

    Oil leak

    My engine leaked oil, and it was just that I did not have the spark plug tightened up enough. On all of the bolts that loosen,Lock tite goes a long way. to keep bolts from backing out. I use medium grade. Maybe you did not put the carburator together right. Let me know and maybe I can help. Not maybe, but I am sure I can. Do not give up because once you get all of the bugs worked out it is way cool, and lots of fun.
     
  11. bird

    bird Guest

    it realy sounds like my first time trying to get mine to work. the chain idler bent into the back wheel locking it up. the motor mounts snapped, then the motor itself cracked where the clutch arm goes into the motor, this was all in the same day. after that i just slowed down and quit rushing so much and everything started falling into place easyer.
     
  12. Torques

    Torques Guest

    I have had a lot of ongoing maintenance/repair with my bike (friction drive). I got the bike and motor mid August. I currently have 2600 miles. I average around 650/month. The engine itself (Robins/Subura EHO 35) has operated flawlessly. It is all the bike stuff, that breaks off like fender mounts, supporting brackets, engine side spokes, rear hub seized, got new hub and wheel (have already broke two spokes on new rim). The maintenance never seems to stop. Otherwise, after repaired, the performance is good until something else creeps up. Having a four cycle engine is nice though.
     
  13. Cookie

    Cookie Guest

    The rason to do a pre flight check and tighten all ur lose nuts

    1. The front motor mount broke after a few days. cost me $20
    2. The spokes broke twice $50
    3. The bolts all come loose and fall off. $10
    4. The weel popped off.
    5. The muffler fell off, twice, and when i was fixing it it burnt my arm
    6. Gas leaked all over my garage when i was trying to fix it.
    7. You really cant turn off the gas, so it floods the carb, and is very hard to start up in the morning.
    8. You get oil all over your hand, cloths, and houce when you fix it, because all the seals suck and it gets all over the engine, and all over your bike.
    9. My bike broke down on me almost every time I rode it.
    10. these are not a cheaper form of transportation, they break down, and cost alot to fix. A scooter is alot better.

    The gas leak is a pain but just replace the cock runs about 2-3 $'s

    if you ride in a real frog strangler some times the mageto gets damp and it is a bugger to get dry and with everything else check you pot it might have gunk in it just get a in line fule filter they help a lot.

    Cookie
     
  14. tirebiter

    tirebiter Guest

    Does anyone know of a specific petcock that will fit the threads in the Chinese tanks?.....part number or application? I could probably find one but if you guys already know it would help. Thanks. :)
     
  15. Cookie

    Cookie Guest

    Look on the Gurbee site under skyhawlk they have a great parts list they now have 2 petcocks listed the old type (that leaks ) an a new one I had the old type and do not know about the new one.

    Cookie
     
  16. 247Jude

    247Jude Member

    I also use rtv sealent with the gaskets and o rings. Mine never used to idle right untill I did that.
     
  17. Al.Fisherman

    Al.Fisherman Active Member

    WOW.....

     
    Last edited: Aug 12, 2010
  18. motorpsycho

    motorpsycho Active Member

    I have to agree...
    installation sounds like a major issue here.
    I have never had any one of the above problems with either of my bikes.
    wheel popped off? what does that have to do with the engine?
    tight bolts go a long way.
    broken spokes? hmmm, i have never broken a spoke and my spokes are stock, and i am using 20" wheels. you are not supposed to dump the clutch at full throttle to try and do wheelies or burnouts. this will definitly break spokes. take it easy on the take off, and your spokes will last.
    muffler fell off? did the baffle blow out, or did the muffler fall off the engine?
    if the baffle blew out, then that would be a mfg. issue...screws not tight from the factory.
    if the pipe & muffler fell off the motor, then i would chalk that up to poor installation.
    again, loc-tite, lock nuts and lock washers do wonders for these engines.

    yes the gas shut off valves are not the best in these kits. but i have never seen one leak gas out of it. there is a gasket that goes on the the shut off valve, and it seals the valve against the gas tank. did you install the gasket? if it floods the carb while it sits, then yes, the valve is bad internally.

    i never get oil, grease or gas all over my clothes or my house when i ride my bikes. the only visible sign of oil or grease on my bikes is the grease that's on the chains.
    the only time i get gas on my hands is if i spill it when i am adding gas to the tank.
    your bike breaking down all the time probably goes back to poor installation. did you take your time and solder all the wire connections and heat shrink them? did you grease the gears under the right side engine cover? did you grease the bucking bar contact point under the left side engine cover? did you adjust your chain tension correctly? did you check your spark plug gap? did you throw away the stock spark plug and put in an ngk plug? did you upgrade to a better spark plug wire? is your gas-oil ratio correct? is your carb. tight on the intake manifold? are you running a fuel filter? is your gas line straight with no kinks?
    is your rear sprocket on straight? is your chain aligned straight?
    there are a ton of things to get right when you build one of these things.

    you can not expect to just bolt these kits on in a few hours, and be riding trouble free.
    they ALL take some tinkering, and modifying to make them run right and be dependable.
    loc tite all the nuts & bolts, throw away the nuts, bolts and washers that come with the kit and upgrade to some better ones. use lock nuts with the plastic inserts in them, blue loc tite good quality flat washers, and lock washers and you can't go wrong.
    the key is patience when building one of these things. upgrade stuff as you build so you only have to build the bike once. you will be a lot happier in the end if you put it all together right the first time.
    you do have to be a bit of a gear head to build one of these things right. there are a ton of people out there, that don't even know what a carburetor does, and they try to build these bikes with diasterous results.
    there are so many things to get right, and someone who knows nothing about engines, should not attempt to build one of these.
    I'm not saying that you know nothing about engines, i'm just saying that 9 times out of 10, when someone has as many problems as this, it's because they don't understand how engines work, and how important it is to make sure things are aligned and tightened properly, tuned propery, wired properly, and maintained.

    "joe blow", who has difficulty understanding why he has to add oil to the gas for a 2 stoke builds one of these things, and then complains because it either blows up, won't run, falls apart, or breaks down all the time.

    "joe the gear head" gets an engine kit, modifieds, fabricates and tweaks parts & peices to make it work right, and he has no problems.
     
    Last edited: Aug 12, 2010
  19. Skyliner70cc

    Skyliner70cc Active Member

    I'm with Al F, most of the OP's woes are due to not doing a thorough installation. Two ways to learn...make your own mistakes or spend several hours on this forum reading and learning from other's mistakes.
     
  20. Oysterville

    Oysterville New Member

    Nothing like resurrecting a 4 year old thread.
     
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