This type of engine is designed primarily for use of only a short time period. They've this aluminum cylinder bore that can be scratched against a steel piston ring thus creating a good deal of friction. Because of this, they don't last really long and consequently, are not a good choice for those who intend to do the sport a good deal. Because larger models, they have this cast iron cylinder, an assortment that is more expensive than aluminum. All the same, this type lasts longer so it perhaps may be a good option to consider. As for some engines of this type, an electric start is built on them and along with this is an alternator that allows them to power a light and even charge batteries.

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