There is something very satisfying about messing about with mopeds, I have a Triumph Speed Triple 1050, a KTM 300 and a Honda MT5, whizzing about down country lanes on the 'ped is more fun than doing 'mental' speeds on the 1050!
This type of work is very time consuming as it has to be done by hand. To do it on every barrel would increase production costs so cylinder work is usually limited to what can be done by machining. I expect if a manufacture did a limited production run of performance models they may do it, but again this would be reflected in a higher purchase price.
Any vehicle manufacturer (even one building mopeds) will already know what engine characteristics they want BEFORE they actually cut any metal. Tomos will have decided what BHP and at what RPM they want the engine to produce this BHP, they are NOT in the business of trying to get the maximum performance they can out of the engine. So this means that a "home tuner" can modify the engine away from what the intensions of the manufacturer were in order to create an engine that suits his needs better. This does not necessarily mean that the engine is 'better' it just means that if differs from the stock engine. (Is an engine better just because it makes more power? well maybe not if you have to run it on high octane fuel and it wears out the crank bearings twice as fast as a stock engine). I have an old Honda MT5 moped, in the UK they were restricted, they made about 2.5BHP and the 'ped would only do about 30 MPH. I reckon mine is making about 7-8 BHP, it does an easy 55 MPH. The down side is that the power band is narrow. (Not that the stock engine even had a power band!)
There is something very satisfying about messing about with mopeds, I have a Triumph Speed Triple 1050, a KTM 300 and a Honda MT5, whizzing about down country lanes on the 'ped is more fun than doing 'mental' speeds on the 1050!
First.
Why did they not do this at the factory?
This type of work is very time consuming as it has to be done by hand. To do it on every barrel would increase production costs so cylinder work is usually limited to what can be done by machining. I expect if a manufacture did a limited production run of performance models they may do it, but again this would be reflected in a higher purchase price.
Any vehicle manufacturer (even one building mopeds) will already know what engine characteristics they want BEFORE they actually cut any metal. Tomos will have decided what BHP and at what RPM they want the engine to produce this BHP, they are NOT in the business of trying to get the maximum performance they can out of the engine. So this means that a "home tuner" can modify the engine away from what the intensions of the manufacturer were in order to create an engine that suits his needs better. This does not necessarily mean that the engine is 'better' it just means that if differs from the stock engine. (Is an engine better just because it makes more power? well maybe not if you have to run it on high octane fuel and it wears out the crank bearings twice as fast as a stock engine).
I have an old Honda MT5 moped, in the UK they were restricted, they made about 2.5BHP and the 'ped would only do about 30 MPH. I reckon mine is making about 7-8 BHP, it does an easy 55 MPH. The down side is that the power band is narrow. (Not that the stock engine even had a power band!)