pk_damiano_4hp

Hello everyone, My name is Damiano and I'm the boss of whiteoneracingevespa some time ago, with Carmelo (mega), I designed a muffler megadella XL more powerful than any other in the market including bigbox sport. The first prototype was modified to search power at high rpm (8500-9000) by shortening the final cone, but this move proved to be wrong because the muffler had less power than before. Unfortunately, the construction costs were high and the project was shelved, however, because the interest in this kind of silencers is growing, I decided to take the development with a new megadella XL version 2.0. I'm sure that with the experience gained I can realize the muffler box type best performing on the market. I show you the photos of the first prototype of megadella XL. sorry for my bad English. https://www.facebook.com/media/set/?set=a.584170771683684.1073741878.151893714911394&type=3

This is the ultimate evolution of my Polossi 228cc: https://www.facebook.com/media/set/?set=a.488439817923447.1073741833.151893714911394&type=3

I have not measured the power with the dyno, but I think between 22 and 25 hp and torque between 25 and 28Nm at 6500 rpm. I modified the exhaust port of 2mm to top but not enlarge it. Today I moved 1mm spacer from under head to under cylinder and changed the head Malossi with the head Polini, the exhaust time is at 179 ° and 125 ° the transfer, the power seems to be increased at higher rpm. The sound: http://www.youtube.com/watch?v=mIc5e-KalxQ

hello to all, My name is Damian and I write from Rome , I like to do tuning wasp , the Whiteone Racing Vespa is my brand (you can find the facebook page ) . I made a Polossi for my Cosa200 , with the new Polini 221cc cylinder (item 140.0084 ) with 62mm stroke and a connecting rod with 116mm wheelbase ( derivation Bultaco 200cc ) . I realized the motor shaft starting from a Tameni working it to have an aspiration time of 120/70 ° . I used the piston and the cylinder head Malossi , I worked the piston and the cylinder to enhance the passage of the mixture , trying not structurally weaken the piston . I modified the original flywheel ( PX200 elestart ) by removing 8 lugs, to increase the airflow at higher rpm. Using the original carburetor with the mixer running enlarged to 25mm and lowered 5mm with the pinasco vortex. The timing of the cylinder is 176 ° Exhaust 121 ° transfer. The gearbox consists of: primary ratio 24/59 (old type DRT), 1st gear 12/57, 2nd gear 14/41, 3rd gear 17/37, 4th gear 20/35 (I used cluster and gear DRT). Tires Schwalbe Raceman 100-90/10. Using the clutch with 7 spring, with MMW basket, clutch gear modified to make it removable and plates clutch Cosa type with 6 cork face. My exhaust is the megadella, an original muffler modified with the expansion cones. This engine makes to 7500 rpm in 4th gear, is a motor touring with original appearance but with a high top speed, you can calculate with a simple calculator. forgive me if I written wrong and in English rather than German, but I used the google translator. greetings from Damiano