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Old 10-05-2010, 11:09 PM
Christian Dorn's Avatar
Christian Dorn Christian Dorn is offline
Motorized Bicycle Newbie
Join Date: Aug 2010
Location: San Clemente ,California
Posts: 14
Default $2,000 Green Hornet

Hi Everyone,
After 3 months of sweat, blood, and tears, I finally have my motorized bike running!
I do, however, have some questions:

1. When going down hill at about 20 mph, or letting off the throttle and coasting, the motor sounds as though it is having a hard time keeping up with the speed of the bike. Shouldn't it just idle? If I'm going down hill, should I take it out of gear?

2. If I hit a big enough bump, the motor starts making this really loud "clicking" noise and doesn't stop until I kill the motor... Huh?

3. Periodically, when I come to a stop and I engage the clutch, it idles extremely high. Other times, it idles normally when stopped. And some times... it just dies! What's up with that?

Look forward to your professional input,
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Old 10-06-2010, 05:56 AM
Mind_Reader7's Avatar
Mind_Reader7 Mind_Reader7 is offline
Motorized Bicycle Elite Member
Join Date: May 2010
Location: Northam, Western Australia.
Posts: 393
Default Re: $2,000 Green Hornet

That's hella sexy!!!

1. When you're going down hill, pull in the clutch. Leaving the clutch engaged while rolling down hill is hella bad for it.

2. I'm not sure.

3. Clean out the air fiter. While the air filter is off, look in the air inlet and turn the throttle handle. You might find that the piston thing is getting stuck.
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Old 10-06-2010, 06:26 AM
Venice Motor Bikes's Avatar
Venice Motor Bikes Venice Motor Bikes is offline
Custom Builder / Dealer/Los Angeles
Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 6,019
Default Re: $2,000 Green Hornet

Sweet bike! It looks like something I would build!
For motorized bicycle sales, service & engine kits in Los Angeles, please visit us at-

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Old 10-06-2010, 07:59 AM
r00t4rd3d r00t4rd3d is offline
Motorized Bicycle Elite Member
Join Date: Aug 2010
Location: Internet
Posts: 310
Default Re: $2,000 Green Hornet

3 could be an air leak at the carb/intake connection. Have you done a air leak test ?

Can we get a video of the clicking noise ?

Nice chain idler !

Last edited by r00t4rd3d; 10-06-2010 at 08:04 AM.
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Old 10-06-2010, 11:06 AM
Nougat Nougat is offline
Motorized Bicycle Elite Member
Join Date: Nov 2009
Location: Montgomery, IL
Posts: 1,332
Default Re: $2,000 Green Hornet

Two could be a wire grounding out and sparking, or the chain clicking against the frame or the inside of the clutch arm cover. Total guesses, I'm very likely wrong.
When asking for advice, you did not specify whether you wanted only good advice.

Get on the member map

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