Another newbie first build.

Discussion in 'Motorized Cruiser Bicycles' started by aquileus, Feb 12, 2011.

  1. rockabilly dan

    rockabilly dan New Member

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    yes its difficult with a coaster brake, i had same problem, too impatient, to get it absolutely right, and is a little out, so chain is tight and loose in places, not overly, but there is a difference, just have to set it at the tight spot, really needed to enlarge the hole in the sprocket properly, not by hand with a rat tail file, lol, oh well, you live and learn.
     
  2. SlowBalt

    SlowBalt Member

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    Aquileus. This will save you allot of trouble. CB-110 Hub Adapter and Sprocket ( Worksman Edition)
    I personally went threw 4 rear rims before I broke down and bought one.
    If your serious bought riding your bike this is the best way I've found so far. The other thing it lock tight lock tight lock tight!
     
  3. Poopyboogin420

    Poopyboogin420 New Member

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    There is a thread about the noise coming from the clutch cover, something about the chain hitting the cover on the inside, I am going to check it out on my MB today because I have a similar problem with excessive noise. The thread said to just find the marks left by the chain and use a dremel to file it down. IDK if this might help.
     
  4. aquileus

    aquileus New Member

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    Thanks guys for all your comments and advices. Today I went to work in the MB, about 5 miles from my house, I forgot to check the gas level before leaving my house, and guess what? YES! I ran out of gas, just 1/2 mile of a gas station, no big deal.

    What was really anoying me was the clutch arm, aparently is too loose and jumps out of the hole every 15 seconds, but I grab the clutch hand lever and hold it a bit enough for keeping in his place.

    The engine is doing lot better with the needle adjustment, top speed is doing ok, sometimes lose power going down hill at top speed, but reading here I'll find out what's this about.

    I'm having so much fun with my MB, before I used to complain a bit if my wife forget to tell me that we need milk or something before I gets home, now I asked her if wed need something to find another excuse to ride the bike again.
     
  5. aquileus

    aquileus New Member

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    Forget to metion, so far the MB don't have vibrations problems, is very comftable, I'll take a pix of the mounts a post it next time.
     
  6. aquileus

    aquileus New Member

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    I was driving around my neigborhood, wondering why the bike is losing power at top speed, when the back tire start to rub the fender big time. This is what happend.

    [​IMG]

    This happend on my way to work, the brakes were working fine, exept once, going downhill I was trying to reduce the speed, at one point the pedals went forward like five turns, then stop it, when I put my feet back on the pedals and try to brake everything worked normal. I thought maybe was brakes overheating, but no, coaster arm was not installed properlly. Aparently those few turns were the nut agaist the brake arm, and few chunks of the arm fall between the arm and the dust cap, the friction there eventually broke the dust cap and bearing.

    [​IMG]

    Here is the front mount, I saw the idea here. The pixs was originally take it up side down and then rotated, that's why looks kind of funny.

    [​IMG]
     
  7. LS614

    LS614 New Member

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    Wow, I just realized that you are only running a coaster brake on that bike, that's VERY risky. You should get some other kind of brake to be safe. The most stopping power on a bike should come from the rear wheel normally 60% in the rear, 40% in the front. AT LEAST get a rim brake for your rear wheel, I'm sure we have some members on this forum who could sell you safer parts really cheap. Sorry it broke :( good luck fixing it! You seem like a very capable mechanic :)
     
  8. aquileus

    aquileus New Member

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    You're right LS614, the coaster brake itself is not enough, I was trying to keep this bike with his original look, but definitly needs another source of brake. Tomorrow afternoon will be running fine again.
     
  9. SlowBalt

    SlowBalt Member

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    This is what I was talking bought. If the sprocket isn't perfectly centered the rear bearings will give out. If your chain goes slack than tight as you role the bike it will fail very quickly.
     
  10. aquileus

    aquileus New Member

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    LOL, you just say it and few hours later "klak". I saw the link you post it and definitly I have to get that. .spr.
     
  11. bairdco

    bairdco a guy who makes cool bikes

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    i dunno what kinda magic engine you have, KC, but with the clutch pulled in, my piston moves, gas still flows, motor still runs, plug still sparks... i think it's called "idling."

    if the bike's rolling, and the clutch is pulled in, my chain still moves, which would mean my gears are still spinning, too. all of them.

    aquileus, glad you're figuring out the noises and everything. as far as a front brake, i run drum brakes up front. keeps it looking vintage.
     
  12. aquileus

    aquileus New Member

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    Drum brakes! that's the way to go, I really enjoy those vintage style MBs.
     
  13. KCvale

    KCvale Active Member

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    Hehehe, thought you meant with the motor off the piston was rattling around ;-}

    Note you can get a little more coaster brake performance if you pull off the 18 tooth rear sprocket and put on a 19 or even a 20.
    As a bonus it's easier to pedal up to speed put you'll need to do chain work ;-}
     
  14. bairdco

    bairdco a guy who makes cool bikes

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    #34 bairdco, Feb 16, 2011
    Last edited: Feb 16, 2011
  15. SlowBalt

    SlowBalt Member

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    If you want drum brakes I would recommend husky rims. You can order them with 11 gage spokes and a Sturmey Archer front drum ,and the sprocket adapter is a direct fit.
     
  16. LS614

    LS614 New Member

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    I don't mean to be rude, and I don't know what kind of engine and clutch set up you are talking about, but I know on mine that when the clutch is not engaged, my crank and piston are NOT moving. The whole point of the clutch is to engage and disengage the engine. My bike does not even roll when the clutch is engaged because of the compression, when the clutch is disengaged, I can roll it. This is how bump starting works too. I'm just saying that there is absolutely NO reason for the piston, rod, and crank to be spinning when the clutch is not engaged. :)
     
  17. bairdco

    bairdco a guy who makes cool bikes

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    LS, you're right, with the engine not running, and the clutch lever pulled, the piston won't move, i was wrong. i was thinking about something else.

    obviously, though, with the engine running, the piston has to be moving all the time, clutch engaged or disengaged, otherwise it wouldn't idle.
     
  18. LS614

    LS614 New Member

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    right :) I agree
     
  19. aquileus

    aquileus New Member

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    Thanks guys for your recommendations. Today I fixed the coaster arm, cuted some areas and bend the arm better, now sits right in his place. I think (and hope) will last a bit longer.

    [​IMG]

    [​IMG]

    [​IMG]
     
  20. aquileus

    aquileus New Member

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    After fixing the the rear hub, I was riding around the bike and fixing some other noises, most of this noises came from the rear fender rubbing the chain and hitting the rack.
    I didn't have time to check the clutch yet (which I was getting used to hear this noise, but now I just hate it. I'm sure is something easy to fix. I'll take a look tomorrow.
     

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