hectic Posted April 2, 2011 Share Posted April 2, 2011 Good day for Kiwi Land. My project is coming along very nicely. Wiring all done new sprockets and chain. brakes are sweet. and I have now connected my LED indicators thanks to the help of the excellent forum. Thanks guys. Okay now I have a new problem my bike accelerates excellent to a speed of 60Km but once it gets here the splutters constantly. I have removed the ring on the front exhaust and removed the rear baffle. But still she is stuck on 60Km. It feels like she is restricted on 60km. I would be happy to get about 80km. Please can all the Guru's out there share the knowledge and expertise? Thank you for the wise knowledge you are got to share with me. Kind Regards hectic Link to comment Share on other sites More sharing options...
Racc Posted April 4, 2011 Share Posted April 4, 2011 This probably won't help but, I had a dt50 from new in 1990 it would only do 60kpm flat out lying on the tank ;-) From memory (if its the original yam exhaust) removing the front pipe and extracting the tube that inside, new reeds, rejet ? I don't think you will get much more out of it as Yamaha built them to go 60kmp for the moped laws Cheers Steve Link to comment Share on other sites More sharing options...
Moderator Airhead Posted April 4, 2011 Moderator Share Posted April 4, 2011 Yeah mopeds for the UK are 30mph or so as sold Link to comment Share on other sites More sharing options...
hectic Posted April 5, 2011 Author Share Posted April 5, 2011 This probably won't help but, I had a dt50 from new in 1990 it would only do 60kpm flat out lying on the tank ;-) From memory (if its the original yam exhaust) removing the front pipe and extracting the tube that inside, new reeds, rejet ? I don't think you will get much more out of it as Yamaha built them to go 60kmp for the moped laws Cheers Steve Hi Steve Thank you for the tip I will try the Reeds and re jet. Once again thank you. Hector Link to comment Share on other sites More sharing options...
hectic Posted April 6, 2011 Author Share Posted April 6, 2011 This probably won't help but, I had a dt50 from new in 1990 it would only do 60kpm flat out lying on the tank ;-) From memory (if its the original yam exhaust) removing the front pipe and extracting the tube that inside, new reeds, rejet ? I don't think you will get much more out of it as Yamaha built them to go 60kmp for the moped laws Cheers Steve Hi Steve Just spoke to a Yamaha mechanic from a Yamaha dealer in South Africa. SA DT50 top speed is 90Km per hour as factory std. Front sprocket 13 rear 48. His advice was clean out all the carbon in the exhaust clean out the carb and ensure the jets are clean. will try this and leave some feedback. Regards Hectic Link to comment Share on other sites More sharing options...
hectic Posted June 21, 2011 Author Share Posted June 21, 2011 Hi Steve Just spoke to a Yamaha mechanic from a Yamaha dealer in South Africa. SA DT50 top speed is 90Km per hour as factory std. Front sprocket 13 rear 48. His advice was clean out all the carbon in the exhaust clean out the carb and ensure the jets are clean. will try this and leave some feedback. Regards Hectic Hi All ok so now my DT is getting 80km I removed the ring at the front of the exhaust pipe, and did the exhaust port in the barrel removed the excess casting. But I have mail ordered a 70cc kit from the UK and received it yesterday. One question if i install the new kit must I do mobs to the carb? if yes what size jets do I need? Regards Hectic Link to comment Share on other sites More sharing options...
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