Thanks 🙏 finally figured out my problem is with the washer between the flywheel cus that one Is engaging the bolt that goes through . Hope I find it . 😂
hi, I'm an Italian guy who has the same scooter as you, I have a problem and since it seems to me that you don't have one, I would like to ask you for help... despite having mounted a 70cc Malossi engine, 17.5 fuel from Orto and Leovince TT exhaust, I didn't have an increase in the maximum speed which remained from the odometer at 80km/h I think it is a problem with the control unit which has a limiter but I don't know one where it is and two how to solve it without having to buy a new one could you give me some advice?
Hmm i think this is the only video that shows that the small ports need to be dremelled all the way. Everyone else just makes a small dent that I do not think makes any difference.
@@titusm9837 i rarely make them all the way. Depends on how well they are fed trough the piston. On the Athena kits, only the middle two are open trough the piston, so i made channels.
@@CarstenLorenzen12V in my case i have a polini 65. It seems that all the extra openings are used by the piston (also they made some sort of M that connects all the small ones together). Should i in this case port for this other openings? I have not seen anyone do this until your videos. It kind of makes sense because the piston has some extra compression i guess? Interesting that i have not seen any manufacturer recommending porting for this openings.
@@titusm9837 i like to make a little "pocket" as deep as the opening in the cylinder skirts. This gives a nice channel to feed the booster ports, without any sharp 90 degree corners.
@@kristofferjacobsen1555 ja hvis det er den udroslede, den finder man mest i Bravo, Si etc. Den droslede der sidder i Ciao 25/30 km/t duer ikke så godt til speedengine.
You're English is better than Americans I know. I'll never understand why I couldn't learn another language this well. Even after 10 years in Germany I wasn't this fluent. Sigh.
My Piaggio NRG as soon as started cold can accelarate up to 70km/h when I slow down then accelarate again it only goes up to 40-50km/h and only reaches up to 7k rpm. What could be the possible problem and fix??😁
I'm at a loss and need help please. I was convicted by others to upgrade my 49cc vespa piaggio grande to a higher Bore: 46 Stroke: 43 Displacement: 72. So I honed out the case. Fits rather well. Then I try and do the computation for inlet timing and nothing computer leading me to believe I've been talked into something impossible. Is there anything I can do at this point?
You could try the easy way, take the Malossi or Polini cylinder manual. It was crankshaft grinding recommendations with how many mm you need to take of the opening and closing edges.
Hello, can you make a video to show me how to properly connect the rev limiter, I have a Piaggio, just like yours, and it nubmerges faster than 50km per hour
Hej har samlet mit men når jeg trækker koblingen så går den ikk tilbage så i kablet og i armen så den blir ved med at være koblet ud kablet går helt nemt.
Mit første bud er slidt centreringsmøtrik. Altså den ude i koblingsdækslet. Den fører udrykkermøtrikken, er hullet slidt kan den kæntre. Tjek også armens vinkel og justeringen af udtrykker møtrikken, som vist i videoen.
Thanks for the vid, I opened up the flow path in my Kinetic moped as you show, except I went with a 12mm carb opening, for some more strength in that tube, (looking for a bit more umph) after making a twin muffled expansion pipe (the pipe added 5 mph) and going with a 13;13 carb. I was curious if the porting would add anything to the low end- it did nothing there, but added some power to the goal of a 30 to 35 mph range. Mike
hey nice video! ive watched it many times. Hope you can answer even though its such an old video. I was just wondering: are the crankshaft bearings lubricated from the fuel/oil mixture or did you put some bearing grease there?
They are lubricated by the oil in the gasoline. I may have used sealed bearings where i removed the seals, hence the grease residue. It's fine, gives lubrication on the start up. If you have "dry" bearings, give them a few drops of oil.
@@CarstenLorenzen12V ok thanks! I might have used bearing grease on the bearings before installing. Do you think it's best to open up and remove it or do you think it will wear off?
Jeg udvidede motorblokken så den passede med en 46mm cylinder og gjorde boosterhullerne mere åbne , var lidt sløv i optrækket fra o men udover dét så kørte den næsten 80km/t men bremserne var mildest talt spændende wup wup , overlevede dog
Max 63 ccm with 43 mm piston. For the larger 46-47 mm piston versions, you need to spindle the opening larger, or get a tuning casing like Malossi MP One, Polini speed enige, pinasco power casing.
Hi crasten How can I talk to you? I need some advice for my piaggio si engine. I have some photos of the crankcase id like to send you so if you hqve another way of communication id like to talk with you
I would guess around 30.000 km, at that point I've seen the wear on the cylinder kit to be over the max. specs. But many factors have a play here. All the worn parts are easy/cheap to replace.
Super video. Tak for det. Har netop fået mig en Bravo. Der er lidt der skal fixes på den. Hvor stramt skal beltet være? Og jeg mangler lys i tomgang, kommer kun på omdrejninger?
Den skal være rimelig stram, hvis man kører tunet. Men ellers så løs som mulig, uden at den glider 😉 Ja lysstyrken følger motor omdrejninger. For store pærer eller dårlige forbindelser, gør problemet værre.
