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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. |
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12-17-2009, 10:20 PM
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Motorized Bicycle Newbie
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Join Date: Oct 2008
Location: Australia
Posts: 6
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wont reach top speed
When I'm riding my motorized bike I put on full throttle and the bike begins to vibrate and the engine doesn't reach its top speed. What could the problem be
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12-18-2009, 10:58 AM
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Custom Builder / Dealer
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Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 4,547
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Re: wont reach top speed
My first question is, "how many miles do you have on the engine?"
(they start to run better as they break in.)
Use 2 gallons of 24:1 mix for break in, & 32:1 after that. After the break in is complete, we can start to tune your bike!
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12-18-2009, 10:04 PM
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Motorized Bicycle Newbie
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Join Date: Oct 2008
Location: Australia
Posts: 6
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Re: wont reach top speed
the bike has gone about 110 miles and i have done the proper break in. But i think my fuel to oil ratio isn't right since i just pour in a random amount of oil into the tank would this be the reason behind the lack of speed
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12-18-2009, 11:59 PM
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Motorized Bicycle Elite Member
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Join Date: Jul 2008
Posts: 149
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Re: wont reach top speed
Check the nuts and bolts. May help a bit for vibration. Rejet for the speed.
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12-19-2009, 07:21 AM
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Custom Builder / Dealer
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Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 4,547
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Re: wont reach top speed
Quote:
Originally Posted by eggi96
the bike has gone about 110 miles and i have done the proper break in. But i think my fuel to oil ratio isn't right since i just pour in a random amount of oil into the tank would this be the reason behind the lack of speed
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YES! that will cause poor performance!! Mix your gas & oil in a separate container (@ 32:1) & shake it well, before filling the tank!!
(& use 2 cycle oil, NOT motor oil!!)
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12-19-2009, 10:54 AM
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Motorized Bicycle Elite Member
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Join Date: Oct 2009
Location: San Jose CA
Posts: 160
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Re: wont reach top speed
On the back of 2cycle oil, it gives you the proper measurements for 16:1 32:1 and so forth. get a red gasoline tank. and a measuring cup.
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12-16-2011, 08:39 PM
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Motorized Bicycle Newbie
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Join Date: Dec 2011
Location: Lancaster county PA
Posts: 3
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Re: wont reach top speed
my kit recommended 16:1 during break in. It does the same vibration thing once I get above 20 miles / hour. I have not pulled full throttle on it very much, trying to give it space as it breaks in. 100 miles on the bike so far. I just ran through my second gallon of gas.
am I running too rich? Sounds Like i am using double the oil that I should be. it smokes... no surprise I suppose.
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12-16-2011, 09:30 PM
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Motorized Bicycle Elite Member
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Join Date: Jul 2008
Posts: 149
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Re: wont reach top speed
Try 32:1.
Check the alinement of chain from engine to rear.
With bike NOT running,hold clutch in and roll bike backwards watching chain.
Just a little will cause vibration.
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12-16-2011, 09:33 PM
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Super Moderator
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Join Date: Sep 2008
Location: Littleton, Colorado
Posts: 7,590
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Re: wont reach top speed
Disregard what the 'instructions' tell you and take the advice given by Venice Motorbikes.
Mix your fuel/oil for a 24:1 ratio for break in then move down to a 32:1 mix afterwards.
Use two cycle oil formulated for air cooled engines, not outboard motor oil.
Much has been written here about oil. Use the search feature and you'll have plenty to read on the subject. Key words "oil mixture". oil mixture - Google Search
Tom
__________________
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
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12-16-2011, 10:16 PM
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Motorized Bicycle Newbie
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Join Date: Dec 2011
Location: Lancaster county PA
Posts: 3
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Re: wont reach top speed
awesome. thanks. i stick with the two cycle oil. I read on the internet trying to see if I could go cheap on some other kind of oil, but that seems like a bad idea, so two cycle oil it is. next gallon I mix will be with 24:1 - thanks for the quick feedback
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