Tressie
Member
Hi,
I've been looking at a cheapy 49cc Chinese conversion kit on eBay: http://www.ebay.com.au/itm/48cc-50cc-Motorised-Motorized-Bicycle-Push-Bike-2-Stroke-Motor-Engine-Kit-/261176687619
My local legislative requirement is for a maximum power of 200W, so I figure the 49cc should be quite adequate in a detuned or RPM limited configuration. I've done the measurements and calculations and know that 200W affords me a 21.5km/h top speed, so that shouldn't be too hard to invoke.
My questions relate to the various versions of these motor kits available, as well as to the operation of any governing mechanism, and additionally the specific CDI unit functioning. Basically, am I looking at the right kit with no obvious known issues, or is there a better choice that I don't yet know about.
Secondly the governor. Does it have one, and if so can it be accurately set for any particular maximum RPM?
Failing the availability of a workable governor, I'm then curious about the individual funtions of the 2 thin electrical wires leading to the CDI ignition unit. It seems this might be a point at which RPM might be measured, and ignition interrupted by a simple microcontroller unit in the case of an over-rev condition.
Thoughts anyone?
Thanks for reading,
T
I've been looking at a cheapy 49cc Chinese conversion kit on eBay: http://www.ebay.com.au/itm/48cc-50cc-Motorised-Motorized-Bicycle-Push-Bike-2-Stroke-Motor-Engine-Kit-/261176687619
My local legislative requirement is for a maximum power of 200W, so I figure the 49cc should be quite adequate in a detuned or RPM limited configuration. I've done the measurements and calculations and know that 200W affords me a 21.5km/h top speed, so that shouldn't be too hard to invoke.
My questions relate to the various versions of these motor kits available, as well as to the operation of any governing mechanism, and additionally the specific CDI unit functioning. Basically, am I looking at the right kit with no obvious known issues, or is there a better choice that I don't yet know about.
Secondly the governor. Does it have one, and if so can it be accurately set for any particular maximum RPM?
Failing the availability of a workable governor, I'm then curious about the individual funtions of the 2 thin electrical wires leading to the CDI ignition unit. It seems this might be a point at which RPM might be measured, and ignition interrupted by a simple microcontroller unit in the case of an over-rev condition.
Thoughts anyone?
Thanks for reading,
T
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