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Check Every Time Guys


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. I neglected to check all my fittings before the last three or four rides and its going to cost me! ...
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Old 04-03-2008, 09:14 PM
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Default Check Every Time Guys

I neglected to check all my fittings before the last three or four rides and its going to cost me!

On the last ride the bike seemed to be running rough at about 25 mph so I began fiddling with the mixture screw.

After the third adjustment I noticed in almost shock one of my rear motormount bolts was almost half way unscrewed and the other one was broken off.

So now I am down to no bike to ride and I havent ordered my engine for my second build yet. I should have ordered it last week.

My attempts at extracting the remains of the bolt that broke off flush have failed so far,and local machine shops dont want to touch it unless I split the motor in half.

I dont know if I am capable of that! Is there a bearing or something I have to press out to accomplish that job?

Help!!

Ted
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Old 04-03-2008, 09:19 PM
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Default Re: Check Every Time Guys

I broke one of mine off. Only it was a tad below flush. I drilled it and got it with an ease out. So it can be done.The only thing was when I was drilling it it kept going on in. It wouldn't have taken much more and it would have fallen into the engine. So I lucked out. I actually had to do that twice. That was when I changed my front motor mount to the hole drilled up through the frame. Never had anymore trouble with it after that..............
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Old 04-03-2008, 10:24 PM
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Default Re: Check Every Time Guys

i pulled every one of those cheap screws on my mounts and tapped them and bought better screws
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Old 04-04-2008, 06:34 AM
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Default Re: Check Every Time Guys

Remember what I said this bike is like a woman she will not be ignored. My China Girl needs attention BEFORE you ride her. rofl
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Old 04-04-2008, 05:15 PM
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Default Re: Check Every Time Guys

Definitely use an E-Z out. Also, that is not a mixture screw, it an idle speed adjustment screw.

Loctite, Loctite...
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Old 04-04-2008, 08:22 PM
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Default Re: Check Every Time Guys

I have heard it called both things. Seems on my bike if the engine is purring like a kitten I cant get the bike over 25 mph,if I get it idleing at a faster rate I can get around 29 mph. with it. Not that I want to go that fast on a bicycle.

Just seems when I get the bike back on the road and I almost get it figured out where the bike performs best it breaks down again.

So maybe purring along at 18 to 20 mph is best for these things.

I almost want to try a rear sprocket with less teeth ------so I can go about 25 without the engine screaming and vibrating so much. Cept I live around a few hills and I might suffer some on the hills.

Ted
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Old 04-04-2008, 08:35 PM
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Default Re: Check Every Time Guys

teddy i went to a 40 tooth sprocket and i can cruise at around 27 mph and thier is tons left and engine runs smooth. anything past 31 and it starts to vibrate bad and things break lol
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Old 04-04-2008, 08:37 PM
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Default Re: Check Every Time Guys

What about the hills?
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Old 04-04-2008, 08:43 PM
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Default Re: Check Every Time Guys

michigan is pretty flat so not many hills. the ones we do have i go up no problem and really don't loose much speed. i can go up a long (1 mile) hill that is not real steep at 27 mph with ease. the steeper hills are not as long but have no problem with them eather. with my electric bicycle i have to pedal assist up the steeper hills and with my 70cc motorized bicycle i can cruise right up them
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Old 04-04-2008, 08:46 PM
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Default Re: Check Every Time Guys

i see you are in michigan also lol should have looked. i think you would be very happy with a 40 tooth
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