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Motor Kit
Installation Tips
If yo are in the process of installing your first China made
2 cycle engine kit, here are a few tips to consider:
- It's
extremely important that you use a bicycle with enough frame space to
fit your enigne. Most 26 inch beach cruiser bikes are suitable. Single
speed (coaster brake) bikes typically have less space between the rear
wheel axle, so chain and sprockets are a close fit. Multi speed bikes
will fit easier, and bikes with front and rear v-brakes are more
dependable than coaster brakes for stopping.
- Lots of V-Frame (non beach
cruiser) bikes are also very suitable, including a few mountain bikes.
As a general rule, the space
within the seat
tube should be at least 12 inches from the bottom to the top, and the
space
perpendicular from the center of the seat tube toward the front be at
least 11 inches.
All
of our engine kits include a complete step by step instructional ebook
($14.95 value) downloadable, or printed (your choice).
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2 Cycle Engine
Similarities
The
trend of 2 cycle China made motorized bicycle engines is not very new
in the US, but due to the seemingly sudden and repid explosive increase
in the number of engine kits, a wide variety of of new designs and
upgrades are available.
Earlier (pre 2005) kits were usually
all 49cc or less, and a few 66cc kits were prevalent. Now adays there
are many 50cc kits, and some being paraded around as 70cc, and some
even being called an 80cc engine. The 70cc kits are usually
about
the same displacement and size as the "so-called" 80cc kits.
The physical size of the 49 and 50cc kits are slight smaller than the
70/80cc ones. Upgrades in the engine kits include:
- steel roller wrist pin bearings- instead of bushing,
- Slightly larger crank rod bearings
- Slightlly larger intake and exhaust ports
- Extra fins for more efficient cooling
- Steel lined cylinder walls
- EPA Standard Emission Control catalitic mufflers
- Chrome-moly pistons & push button clutch lever (among others) |
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2
Cycle VS 4 Cycle
In
the last couple years, there have been a new production of 4 cycle
engine kits imported into the US. Since 4 cycle (4 stroke) engines burn
cleaner than 2 cycle engines, these were meant to meet stringent EPA
standards which were being strictly enforced during the 2006 era,
The
4 cycle engines are made by some "off-brand" China manufacturers, but
ran very well and proved comparable to the famous Honda® brand. The
gear train of some of these kits, however did not hold up well, but
improvements are being made. Here at PowerPedal.net, we sell only the
procucts that have been tried and trued.
4-Cycle
engines:
- require oil in the crankcase instead of mixing oil with the gas.
- Since their operation is not simple like the 2 -cycles, they are much
mure bulky and require more space to install.
- They run cleaner with less emissions
2-Cycle engines:
- no need for oil changes.
just mix it with the gas
- Operates on simple 2 stroke principle, therefore it's smaller and
gives more power to the pound
- Emits more polution (Nox) than 4-Cycle engines.
- Noise leve = about the same for both (approx 60-70 dBA) |
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