sir1234

No no... the boost port and the transfert duration will be the same.... at the moment it is different but i will modificate the transfert port from 120 grades to 130 grades like boostport. Ciao Romeo ancora non conosco le fasi di aspirazione della valvola e al cilindro.... perchè non ho ancora ricevuto il pacco da DRT.

Here the UPDATE! You can see the new quarry on the piston for lubrication and a new orientation of the aspiration to the top of the cilinder. The phase is 130 grades

CIAO pozzone!!!

That quarry is for lubrification!!

Yes it is Balancing the dark area are hardening... this treatment is ORIGINAL form PIAGGIO

Yes i have rivets the flywheel because i cange the big cone with the small (19) if you look good yuo see that i take a reference and i put the cone in the same position like the old one.

Don't misunderstood what i say...... I want to say that the 5 disc DRT is good and is not worst than ZIRRI! If your 5 disc doesnt work so good is your problem.......this is not LAW! Sorry at all for the Misunderstanding... i hope that VESPAOLO show me his intelligence and make DIE this disussion.

Hello GERMAN BOY! I want to present you my new motor composed by: -130 polini double admission -Mazzuchelli crank 53 mm -PHBL 24 -DRT cluth with 4 disc surflex modificated, "Kupplungsabdeckscheibe" and "innerer Kupplungskorb" -Schaltkreuz/Schaltklaue DRT -24/61 -Pk flyweel 1,6 kg (6 poles ignition et3 compatible) i'm waiting for the crank from denis because there is a delay on the delivery! Let's take this photos for the moment......i accept any kind of question! i update as soon as possible! BYE

thank you at all! now i try......

Thank you! i try to POST my topic but there are some link at images from imageshack.us and the forum locks my posting! can you help me?

momo you are a very nice person! I am very happy to talk with you about VESPA solution by DRT or by other. I disagree with you about all that you think....... falc has GOOD solution and products almost perfect but unbuyable! about the clutch... I have 2 vespas: The first is a PRIMAVERA 125; i put on the 130 polini DoA with 53mm crank and i will use the 4 disc SURFLEX modificated like DRT advice and this components (i dont know how to traslate CROCERA, CASTELLO MODIFICATED and DISCO BOMBATO): I will test this clutch this week (i hope this!! I have not yet received the crank from denis!!) the second is a VESPA 50 L with 130 polini more or less 20 cv in this motor I use a 4 disc SURFLEX modificated like DRT advice and i have the DISCO BOMBATO (second image) and this clutch is PERFECT!

hi momo denis DRT is a modest person! i think that the 5 disc is good for BIG horse power! I think it is better than the zirri clutch...... for my polini is good the 4 disc clutch do you have a falc? good choice! i want to buy a falc but it is e lot expensive! what kind of falc do you have? (sorry for the OFF topic...)

I'm SO happy to read your interess! Wait to next week! CIAO

Perfect! Next week i will close the motor so i will post a TOPIC with some fotos! byeeeeeee

This is not correct. The drt 5 disc clutch ARE NOT tested with a superpowered motor so you can't say that it isnt good for race you must TRY if you want to say this.... I use a 4 disc SURFLEX modificated with special DISC by DRT on my polini (about 20cv) and it is PERFECT! Sorry for my english..... I'm a user of et3.it I'm just finishing my POLINI 130 Double admission in with crankshaft 53. If GSF is interested to my project i will open a TOPIC on your forum. Bye