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Morini Bicycle Engine Italian made Franco Morini engines are the ultimate bicycle motor. Learn and share how to get the most out of morini motors.

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  #1  
Old 06-11-2015, 04:08 PM
triride triride is offline
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Default Morini unknown?

Hi all,

I have been thinking about fitting a Morini engine for a while now and have finally bought a donor bike- Aprillia RX 50 Experience.(not sure of year)
Does anyone know what version of Morini engines these bikes have fitted?
I am also open to any tips for my first Morini build!

Cheers, guys.
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  #2  
Old 06-11-2015, 09:30 PM
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Easy Rider Easy Rider is offline
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Default Re: Morini unknown?

Any pics of the motor?
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  #3  
Old 06-11-2015, 11:28 PM
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Davezilla Davezilla is offline
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Default Re: Morini unknown?

Gotta see pics...
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  #4  
Old 06-12-2015, 08:34 AM
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Ludwig II Ludwig II is offline
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Default Re: Morini unknown?

Aprilia 50s as sold in Europe usually have engines from Minarelli. There are common parts with some Derbi and Yamaha models as well.
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  #5  
Old 06-12-2015, 08:38 AM
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Ludwig II Ludwig II is offline
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Default Re: Morini unknown?

Yup, AM6 Minarelli. Decent go in standard nick, capable, if you throw money at them, of delivering close to 20hp at the back wheel. 100+ mph in Dutch moped racing at Croix.
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  #6  
Old 06-12-2015, 09:13 AM
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Ludwig II Ludwig II is offline
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Default Re: Morini unknown?

This is the kind of go you can get from them, and it explains why I am somewhat amused at the idea of getting more go out of the Chinese bicycle engines.

https://www.youtube.com/watch?v=SiQ1stE7Eoc
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  #7  
Old 06-12-2015, 11:44 AM
triride triride is offline
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Default Re: Morini unknown?

Hi guys,
Having problems trying to upload pics at the moment.(my son will be home from school shortly to give me a hand )
I have taken some information off the engine to see if it means anything?
On engine casing - FM2912*00492
On gearbox casing - FM15 - 7340
Carb - 18mm Dellorto PHBG

Cheers, Pete.

p.s.Love the Youtube vid Ludwig!
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  #8  
Old 06-12-2015, 12:33 PM
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Ludwig II Ludwig II is offline
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Default Re: Morini unknown?

The numbers mean nothing at all to me. What are you going to put the engine in? Even restricted, it's probably more powerful than most bicycles will stand and, derestricted, standard they are good for 60.
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  #9  
Old 06-12-2015, 03:43 PM
dtv5403 dtv5403 is offline
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Default Re: Morini unknown?

The top speed depends on final gearing and wheel size, you can reduce the top speed considerably with a 24" wheel as opposed to a 26", and you can also reduce the top speed with a larger rear sprocket. Please remember when using a MorinI engine, you're ready not building a standard motorized bicycle, you're basically building a mini motorcycle. You will need some motorcycle parts, such as very strong brakes (cable operated disc at the least, hydraulic if you have the tools and skills to install), and I would also look into getting the strongest wheels you can, or building your own.
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  #10  
Old 06-12-2015, 03:53 PM
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Ludwig II Ludwig II is offline
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Default Re: Morini unknown?

I promise you, if he's got an unrestricted AM6 engine there, it'll take more than gearing to deal with it.

Further: if it's been tuned with Doppler and Polini bits, it will wrap the cycle around itself.
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