So i dont think SHA carbs are a favorite on kitted QT50s but thats what im rocking with and was hoping to find others similar setup that can tell me what they have going on. On the entire internet this site is the only place that even talks about slide tuning for these carbs that ive found and they are old ass threads with nothing to do with QT50s
MLM side bleed
Dellorto 15:15 carb
Cone mesh air filter
Thats my ride. Its rich on the low end and at idle and im trying to figure out which slide is right. I cant really figure out the jetting till i get this sorted out as changing the slides requires rejetting. Running a 61 now and it 4 strokes when the temp is below 320. Being in a residential area I'm not always going full throttle so this is quite annoying when when the engine cools to 290-310 as I give it gas. I have all slide that are available on treats, 1,2,6,7,9 and the stock plastic one. 10 is outta commission.
I read on here that the slide angle leans the mixture out by creating a nozzle effect and the the greater the slide cutaway number the leaner the transition off idle. The reviews on treats about some of these slides conflict with the information offered on dellorto thread. As you can see, not all the slides are angled but have a funny shaped cutaway instead so im not sure where to start with the information on this site as the dellorto thread is old and some slides mentioned dont exist on the market anymore and theres new ones at this point in time.
I have a tachometer coming in the mail so i can get my idle to 1,700 RPMs as advisied in the owners manuel and will go from there with slide tuning. As of now I've been tuning to where the back tire starts to barely move and then I back it off but the idle is really really high and it sounds ugly and unhealthy when I do this.