kod mene je situacija sport pro ac.yasuni r. mikuni 20 e sad nisam probo kako bi radio sa pro aspuhom sigurno bolje nego sa r.ali vijerujem da je teže naštimat nego sa yasuni r.
uglavnom ne mogu se požalit na svoju konbinaciju ima fin šuz i fino ide nedavno sam skinuo pro sa 1500km kon novi izgleda(mislim nije nešto ni prešo)
All dyno runs were done with an aircooled Minarelli engine with standard 12mm carb (!) and standard airfilter. Best jet size was between 85 and 93, depending in which exhaust was used. Variator was a polini 2003. The blue curve is from a Polini 70cc Sport, red graph is from a Stage6 Sport PRO. The Polini makes best power between 8000 and 8500 Rpm, Stage6 revs about 1500 to 2000 higher, hence we needed to use lighter weights (some 4g give or take 0.8g, depending on the exhaust) and heavier clutch springs (Polini, green – yellow). Stage6 comes with a variety of base gaskets, we choose one which sets the squish clearance to 0,6mm, which is what we recommend.
The Test:
The Polini 70cc is a bit to low revving to work well with the Yasuni R. In terms of performance they together struggle to make it to the level of the Z. Better to save the 40 Euro difference in price really. Together with the Stage6 the R then shows its teeth, 8.6 Bhp @ 10141 Rpm are not at all bad from an aircooled sport-kit with a 12mm carb. Even at 90 Kph it still makes 6.5 Bhp at the rear wheel, other pipes are down to 3 or 4 brake there already.
