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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

little power


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. hey guys. i have been busy but thanks for the help. my bike is going around 25mph ish. im prety ...
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  #11 (permalink)  
Old 03-17-2009, 02:52 AM
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Default Re: little power

hey guys. i have been busy but thanks for the help. my bike is going around 25mph ish. im prety happy about it. no big problems right now
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Old 03-17-2009, 07:53 AM
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Default Re: little power

where are these gaskets and how do i tell if there is a leak? i crashed a little bit after losing traction in some sand and i've lost a bit of power. nothing seemed to be damaged cuz i took most of the beating. i used to be able to get to 30mph pretty easily but now it struggles to hold 24. i've tightened the head bolts, cleaned out carbon deposits, taken apart the carb and cleaned it a little bit and nothing helps. i'm pretty stumped. I think i'm using a 16:1 ratio for gas but that worked fine before the crash. I've put about 150 miles on it.
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Old 03-23-2009, 09:24 PM
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Default Re: little power

hey man. im new to this so dont rely on me. i have been told to bump up he gasoline ratio after break-in from 16:1 to around 25:1. i bet you would get more power if you have less oil. and check your intake manafold gasket and all your seals in the carb for leaks.
thats my two cents
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  #14 (permalink)  
Old 03-23-2009, 09:26 PM
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Default Re: little power

oh and i just picked up some gasket material at home depot cause the ones that it came with sucked
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Old 03-23-2009, 10:00 PM
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Default Re: little power

ok, fix that gasket!! check that plug i.e. looseness..fouling...ect and mix a leaner fuel batch hope it helps
C.W.K
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Old 03-24-2009, 08:16 AM
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Default Re: little power

Make sure the engine is still lined up correctly too, could be the cause.
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  #17 (permalink)  
Old 04-23-2009, 11:16 AM
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Default Re: little power

Quote:
Originally Posted by Technocyclist View Post
air leak you say... check out the oil seals... repack the oil seals with grease...and seal the edges with a head gasket maker...

the oil seals tend to pop out...
hay mate this is happening 2 my bike do u have 2 pull motor apart or can u do it by just taking magnet off any pics would b handy thank u
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Old 04-23-2009, 06:33 PM
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Default Re: little power

fix the gaskets and seal everything up,its not the plug or oil/gas ratio but you should up it to 25:1 now.
plus something could have got damaged from the crash,check throttle and clutch cables.
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Old 04-24-2009, 03:07 PM
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Default Re: little power

Quote:
Originally Posted by WANGERS88 View Post
hay mate this is happening 2 my bike do u have 2 pull motor apart or can u do it by just taking magnet off any pics would b handy thank u
You don't have to pull the motor apart but you do have to remove the magnet and the small sprocket. Be careful not to loose the halfmoon woodruff. If you ignore this problem, there's a possibility that the oil seal can get eaten up by the small gear. Also, the oil would spread to your clutch, rendering it useless. Unless your engined seized up first. It's a bit tricky putting back the magnet. Takes some practice and patience.
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  #20 (permalink)  
Old 04-24-2009, 11:02 PM
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Default Re: little power

thanks only magnet side leaking
woodruf key have worked with them be 4 know a few tricks all back together now
used seal from 1 of my motors where wrist bearing disintegrated
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