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Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles

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  #1  
Old 10-29-2009, 11:13 PM
george_n_texas george_n_texas is offline
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Default Real vibration resolution...shaft drive.

Nothin took the vibration out of a motorcycle like shaft drive...I have no idea how hard this would be to do on a MB but plenty of gearheads here to figure it out if it is plausable.
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Old 10-30-2009, 12:05 AM
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fall_down_stand_up fall_down_stand_up is offline
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Default Re: Real vibration resolution...shaft drive.

Sorry,but that sounds crazy to put a shaft drive on a MB....I see absolutly no reason to do that to a little china girl engine with limited power....Keep brainstorming,you might come up with an idea I wouldnt mind doing....
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Old 10-30-2009, 02:41 AM
noco noco is offline
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Default Re: Real vibration resolution...shaft drive.

well i dont know how realistic of an idea this is but you could get a driveshaft with u joints from steeling the steering shaft out of a car...they have a built in slip yoke and everything...you know i have never had any vibration problems....how well centered is your rear sproket???

Last edited by noco; 10-30-2009 at 02:43 AM.
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Old 10-30-2009, 02:46 AM
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Junster Junster is offline
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Default Re: Real vibration resolution...shaft drive.

they make shaft drive bikes, but they just don't look hvy duty enough to use.

Chainless Bicycles - Shaft Drive Bicycles. Bicycle performance, comfort and convenience.
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Old 10-30-2009, 03:10 AM
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Technocyclist Technocyclist is offline
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Default Re: Real vibration resolution...shaft drive.

going chainless does have it's advantages... but i'm still not convinced on it's durability and longevity...
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Old 10-30-2009, 02:06 PM
george_n_texas george_n_texas is offline
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Default Re: Real vibration resolution...shaft drive.

Here's what motorcycle riders say about shaft, chain and belt drive systems:
What is the advantages OR disadvantages of a shaft driven motorcycle compared to a belt or chain driven ? - Yahoo! Answers

on the downside:
WikiAnswers - What are the advantages or disadvantages of the shaft drive vs belt drive on a motorcycle
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Old 10-30-2009, 10:20 PM
42blue15 42blue15 is offline
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Default Re: Real vibration resolution...shaft drive.

I would think that it would be easier to try a toothed-belt drive first.

Also I would expect that most of the vibration comes from the (piston) engine itself, as electric-bicycles tend to use much lower-RPM motors, and those riders rarely ever complain about vibration issues.

(-come to think of it, my hands have gone numb some days while trimming the yard with a weedwacker.... and the weedwacker does use shaft drive.... It also uses a small, high-RPM engine as well-)
~
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Old 10-31-2009, 01:12 AM
bandito bandito is offline
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Default Re: Real vibration resolution...shaft drive.

George belt drive doesnt do away with vibration from a motor on a m/c but gives it a smoother and quieter ride, a well tuned multicylinder m/c will purr like a kitten nowadays. The japanese cured that long ago. This doesnt apply to single cylinder motors however thats why they call them thumpers. In a single cylinder motor theres nothing to counter act the vibrations of the one cylinder......anyways changing a flat on a drive shaft m/c is one huge pain in the arse. Check out this belt driven trek bicycle.......Trek Bikes | Bikes | Urban | District
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Old 10-31-2009, 02:07 AM
george_n_texas george_n_texas is offline
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Default Re: Real vibration resolution...shaft drive.

Cool lookin bike...bit pricey. I never owned a motorcycle with shaft drive so I never knew the tire changing issue...good point. I had a single cylinder 650 suzuki boulevard. It was screamin fast for about a block or 2 but top end was about 70 had terrible vibration though.
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Old 11-27-2010, 04:46 AM
tonycar tonycar is offline
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Default Re: Real vibration resolution...shaft drive.

G'day Have you checked your chain for stretch, make sure it touches all round the rear cog [with the left hand start from the bottom of the large cog with one finger holding the chain and with your right hand follow the chain around seating it into the cog it should be a snug fit any gaps or loose parts you may need a new chain] also If you have vibration problems try lead flushing sheets [the stuff you put around skylights on the roof] for shims or spacers around the frame and or SELLEYS knead it steel polymer repair system is excellent for uneven gaps or wedged gaps on the front support but remember to put tape around frame before applying then remove after it dries
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