head swop.......

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I have the first RR Ultimate version and the waight is 15.2 kilo so you need a engine with grate power to get it fly ;)
The first version of Ultimate is a bit more hevy than the later versions.
I tried a 27.2cc reedcase ProMod from ONB , but still too weak.
Bougth me a cyl. from DDM and got a friend of me to do the replacement and cutout inside.Made it to 30.5cc
So now i got lot of power in my Ultimate.
Now its no problem to drift on dry asphalt, wheelspin 10m from zero stand .
Ultimate cars can`t get enough of power :D
 
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