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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
Computer Zeroed
Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. When I start the china girl on 'HuffNPuff' it zero's out the computer/speedo. I read on here somewhere ...  | 
08-23-2009, 11:25 AM
|  | Motorized Bicycle Member | | Join Date: Aug 2009 Location: NE Pa.
Posts: 36
| |  Computer Zeroed
When I start the china girl on 'HuffNPuff' it zero's out the computer/speedo. I read on here somewhere that this could happen, but my question is this. If I were to move the sensor to the back wheel will that correct that problem? This is just a cheapo Hong Kong computer, but I'd like to keep track of my 'miles traveled' more than anything else.
Thanks for all replies........
Bill |
08-23-2009, 12:05 PM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 2,684
| | Re: Computer Zeroed
What plug wire are you using? |
08-23-2009, 12:38 PM
| | Motorized Bicycle Elite Member | | Join Date: Jul 2009 Location: Farmington, MI
Posts: 130
| | Re: Computer Zeroed
I had the same problem. Tried a new plug/wire and even moved the CDI behind the seat post. The only solution that worked was to use a magnet to reduce EMI. Most Radio Shack carry them but I had to try two stores. The barrels open to wrap the wire through the center and then snap shut. works great. |
08-23-2009, 04:03 PM
| | Motorized Bicycle Member | | Join Date: Aug 2009 Location: NE Pa.
Posts: 36
| | Re: Computer Zeroed
Pablo, The stock wire that came on the CDI.
bseelbach, now there's some science for ya, I'll give it a try, Thanks.
__________________ Bill
 |
08-23-2009, 04:30 PM
|  | Motorized Bicycle Senior Member | | Join Date: Apr 2009 Location: Hudson, FL.
Posts: 85
| | Re: Computer Zeroed
Mount your cdi under the gas tank back from the down tube. This worked for me. |
08-23-2009, 04:34 PM
| | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 2,684
| | Re: Computer Zeroed
Also, you might want to just improve the wire: SBP Plug wire |
08-24-2009, 09:23 AM
| | Motorized Bicycle Elite Member | | Join Date: Jun 2009 Location: ny,ny
Posts: 597
| | Re: Computer Zeroed
Quote:
Originally Posted by bseelbach  I had the same problem. Tried a new plug/wire and even moved the CDI behind the seat post. The only solution that worked was to use a magnet to reduce EMI. Most Radio Shack carry them but I had to try two stores. The barrels open to wrap the wire through the center and then snap shut. works great. | Those are not magnets but ferrite toroids. They never did anything to help the speedo problem for me. What worked was using resistor wire, moving the CDI back, and putting LC filter in the sensor line. 20 months 6500 miles now with no reset on one bike. Probably replace the battery soon. |
08-25-2009, 10:28 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2009 Location: upstate NY
Posts: 1,451
| | Re: Computer Zeroed
i am using all stock parts. my speedo and wires is on the far left of handle bars and the killswitch wires are on the far right of handle bars. my speedo is working.
all you have to do is keep the speedo and wires away from the killswitch wires. | | Thread Tools | | | | Display Modes |  Linear Mode | 
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