what did you do to your motorized bicycle today?

Discussion in 'Motorized Bicycle General Discussion' started by Skarrd, Oct 25, 2010.

  1. xseler

    xseler Well-Known Member

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    In the near future, I'm gonna solve any potential rear hub failures......

    [​IMG]
     
  2. placidscene

    placidscene New Member

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    Today I rode to work and back home for the first time since fall of 2012.
    Bike did fine. I guess I need a smaller jet though, it is still 4 stroking in the top end.
    That means smaller jet right?
    Anyway. It's 12.75 miles each way and I made in 35 minutes both directions, including all of the traffic lights. It takes me close to 30 minutes to drive it!
    Not too bad, and the ble gets 5 times better fuel mileage than my crown Vic.
     
  3. Greg58

    Greg58 Well-Known Member

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    It sounds like you are on the right track, if its not too bad a high flow air filter will help some if you dont already have one.
     
  4. placidscene

    placidscene New Member

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    I already have a high flow filter and smaller than stock jet from SBP.
     
  5. Greg58

    Greg58 Well-Known Member

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    I would do a plug check to get it right, I like to start with a new plug because it seems easier to read .
     
  6. Intrepid Wheelwoman

    Intrepid Wheelwoman New Member

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    I've done nuffing at all for the past week or so as I'm back with having joint and muscle pain again. Even though I'm fatigued I don't seem to be having any problems with the clarity of my thinking this time around so I'm still able to plan and plot over what I'm going to do next on my projects.

    It's a wee bit annoying that my Wu Yang/Solex bike is still sitting about looking absolutely lovely, - only it still isn't running yet! :(
    Hopefully in the next few days when I'm feeling better I'll be able to finish off the final details and actually get the engine to run.

    Oh the shame of it, - I had to borrow my daughter's car to do the week's grocery shopping before Christmas. Normally I would have done it by bike like I always do, only I wasn't physically up to it. Being a skinny vegetarian does mean that my weekly grocery shopping is nothing like what Americans might consider a week's groceries to look like and the load is certainly lighter, but I knew that if I did set off on my bike I would end up having to phone my daughter to come and rescue me. So it was just simpler to borrow her car in the first place. I hate cars, especially modern ones :(
     

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  7. placidscene

    placidscene New Member

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    Here's pics of the symptoms.
     
  8. placidscene

    placidscene New Member

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    Another pic
     

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  9. placidscene

    placidscene New Member

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    First pic didnt upload
     

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  10. apex

    apex Member

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    I put bmx type handlebars on harry.

    [​IMG]

    I wasn't a fan of the cruiser bars, I felt like I was steering with a till and rudder. With the smaller bars centered over the steering head axis I have much better control and feedback from the front end. I plan on keeping the riding posture upright on this build, sort of the old UJM style (universal Japanese motorcycle), think late 70s honda cb or Kawasaki kz type riding position. I think this is most functional for the roads I use it on. I definitely need a better seat than the stocker.
     
  11. crassius

    crassius Well-Known Member

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    that spark plug seems to have a bad compression ring, or maybe the threads are bad in the head - oil spatter on chain guard could be either carb or muffler
     
  12. placidscene

    placidscene New Member

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    I was wondering about the oil under the spark plug. I do have a hard time not cross threading it when I put it in. I guess the threads are damaged.

    Good excuse to buy an upgrade... lol any suggestions?

    Also could the leak at the plugs cause the 4 stroking?
    The fuel is definitely coming from the carb. And I already check the float, it floats.
     
  13. crassius

    crassius Well-Known Member

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    the plug leak could cause several things that will rob you of power - it needs fixing, so do so & see

    head comes off easily for sleeving or helicoiling if you don't have easy access to another head

    fixing this might even reduce the spit-back from the carb
     
  14. MEASURE TWICE

    MEASURE TWICE Well-Known Member

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    I ordered a crankcase oil breather assembly to see if my 5 years ago refurbished Briggs 4 stroke 3hp engine has less smoke out the muffler. Its not much, but I expect it could be better. There has been very little run time on the engine till now. It had the valves and seats cut and length of the valve compensated. The rings also replaced, so it has good compression and starts right up no problem.

    I know the older cast iron engines have parts that are not in a crimped metal case. With those you can see the spring inside and replace it with another new one I'd bet. Those type there is no return tube to the air-filter / carburetor. They just vent the oil mist down the side of the engine.

    This 70's era 80202-0430 aluminum Briggs engine, you have to replace the whole breather. I have a couple of extra air-filters that I will install if I see that the one in there now got mucked up from the worn breather spring not working properly and the return tube sprayed a lot of oil mist on the filter.

    MT
     
  15. MEASURE TWICE

    MEASURE TWICE Well-Known Member

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    You could bring it to a machine shop to install the Helicoil if it seems to be economical and you don't want to buy the special sized drill bit and Helicoil insertion tool and coil insert. I can say once those are installed I have never had a problem ever with cross threading again.

    There are other non-spring type inserts, but my thought on those is there not worth using as they are as soft as the white metal they cast the head with.

    MT
     
    #6695 MEASURE TWICE, Dec 29, 2013
    Last edited: Dec 29, 2013
  16. BonusParts

    BonusParts Member

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    I did this a couple days ago. pic links to the other few pics in my rebuild thread :D

    [​IMG]
     

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  17. truckd

    truckd Active Member

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    Just a little secret before paint casing if you have a dremel ? hone out the bolt hole so that the bolts don't pull the paint off the edges.

    Everything looks great! keep up the good work I'll have to fallow this thread
     
  18. crassius

    crassius Well-Known Member

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    yes, and I put a dead spark plug with the top broken off in the head too - guards the hole & makes a handle
     
  19. Danschutz

    Danschutz New Member

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    I haven't even seen my bike in a week or so, been super busy at the shop. I did however visit a good friend and old motocross riding buddy. The man gab evolved to motorcycles and well long story short he gave me a brand new set of Renthal bars off his 450. They are the stock bars and he doesnt use them. He's sponsored by some companies and gets bars when needed.

    I'm also getting the new exhaust off his kids 65cc just as soon as the fmf pipe arrives. Good timing I guess lol.

    Here are the bars, I also have the throttle that I left in my truck by accident. That's a big chain guard that I'll try and fit somewhere as something.

    [​IMG]

    Dan.
     
  20. xseler

    xseler Well-Known Member

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    I did some 'tweaking' on my home made "Frankenstein" exhaust. It's not quite finished yet, but it's looking a whole lot better than it did. I'm still undecided about the expansion chamber that's on the bike now ---- it looks great, but I think that I like the sound of the one I made. Who knows? I might sell the expansion chamber and apply the fundage to my upcoming shift kit.............:D
     

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