1983 Yamaha RX50 Carb Upgrade! (Works with YSR50 too!) 

I had a black RX50 Special when they were new and put over 10k miles on mine. My best friend has one also and he loved to put it through hell. New at redline in fifth gear it would hit about 58 MPH and I mean it was screaming and I was tucked down from the wind. I always hear they were always given away. I am proof that is not always true. Jim's Import Cycles of Wichita had two brand new and I learned that they were mopeds under state law. (under 50CC was the only requirement then. Now horsepower would make it a bike) I paid $900 and traded in my QT50 Yamaha and I am not sure what my friend paid for his. We went to hell and back many times and aside from cleaning the carbon off the top of the piston head every so often and fluids it never failed me once. I really miss that bike but to be honest its the memories attached to the bike that I miss most. Thanks for the memories. (They had a sign I remember in service: You Fix it, We make it run. )

Those rx50s look like a lot of fun!

Good job keep it up ❤❤❤❤

I just aquired a 1982 with 284 miles!!! In Black. Got it for $400 at a garage sale! Obviously it's been sitting and I have had lots of headaches with the factory carb and stumbled on this video while researching options. Thanks for posting this!!! Could you provide links to the carb and manifold you used? This thing looks to be a blast to ride! If you could report your final settings for jets, that would save me a ton of work and be much appreciated.

Really to find the torque on the two bolt YSR version. Was really hoping these were the same. Manual mentions the torque for the four carb joint bolts, but not for the two that secure the carb to that. :-(

Hey - we met the other day. I was the paramedic who complimented your mosin shirt. Let me know if there’s anyway we can meet up and talk surplus etc

Hi great video thanks for sharing...i am doing the exact same thing on my ysr... Have the Reed block etc... Can I ask why a bigger main jet? I would have thought smaller because its a lot bigger carb.. I have put the carb on with the jets it came with.... Wide open throttle it flys but when you slow down its not so great... Maybe I need smaller idle jet.. Like you did... What position did you have the needle set? Tia

Hey if i were to put this on a ysr 50 how would i get rid of the oil line on the carb

Hunter This is awesome I’m always working on my sisters stuff too. Hope she doesn’t wipe out and rash herself up with shorts on. That happened to my sister. I got banned from FB for trolling liberals so I Will try to do a new write up on the CX racing 2.8 Duramax intercooler install on Colorado fans.

How many speed ? Is it 5speed?

How many gearbox does rx50 has ?

Can I put a super charger on this bike?

Please do yourself a huge favor and throw that stock airbox in the trash where it belongs. If you want the bike to actually get-up-and-go you need to put a K&N or highly modify the stock airbox. As for your question on the pipe, ADG will not be a direct bolt on. It would have to be modified I'd that that's because it hangs completely underneath of the AYSR50.ADG will not be a direct bolt on. It would have to be modified I'd that that's because it hangs completely underneath of the a YSR50.

I have one and are the lights and all supposed to stay off until the engine starts or is something wrong with mine? No nothing until it fires up, then everything comes on but kill it, and lights all go out. Is this how a 6v system works?