Convert CC's to Watts?

[Neodude1123201]

I Want to put a motor on my pushbike,but the law is anything over 200 watts must be registered and to ride it you must have a license.So,How do i convert CC's to Watts (Or How much watts is a 49cc motor)?

 

[Bobert93]

LOL , im going to do the same thing , this term in mechanics I have been working on a 25 year old whipper snipper engine.

We just got it going running well at the end of last lesson , when i take it home im going to try figure out how the hell i will put it on a bike lol

 

[Neodude1123201]

Well,I Just Downloaded a PDF From the RTA Stating that it's legal ONLY If it's a pedal assist,So Basically,You still have to be able to normally ride it.Otherwise its classified as a MOPED.

Here are a few ideas on how to attach it.

http://www.popularmechanics.com/outdoors/adventures/1276821.html

Could Even apply this principle

http://blog.modernmechanix.com/2006/05/11/put-an-outboard-motor-on-your-bike/

 

[BrynF_UK]

You can't calculate the power of the engine (watts) just from knowing the displacement (c.c.) - you need to know the engine's horsepower rating, then you can convert that to watts

 

[Neodude1123201]

Ahhh ok,Is there any way i could find out the HP Rating?

 

[BrynF_UK]

do you know what the manufactuer/model of the engine is?

 

[Neodude1123201]

Ummm,I Dont have the manual for the motor,I'll look for a model number or any bits of info i can tommorow morning.

 

[BrynF_UK]

hmm, you better hope the motor doesn't give out much more than 1/4HP because then you'd need to register it anyway:

1 horsepower = 745.699872 watts

And I've seen model airplane engines that have an output of 1.2HP - and they have 6.4 c.c. displacement

 

[Neodude1123201]

Wow.I Guess my only other option is using an electric motor,A 200w electric motor is still quite powerful.

 

[Bobert93]

Well , who cares if it illegal ? are you going to be riding it on the footpath ??