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Aftermarket Engine/Parts
Lifan
New 125 Sputters through all throttle/idle
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<blockquote data-quote="TNStreamerDreamer" data-source="post: 181651" data-attributes="member: 11742"><p>Man, thanks for digging in on this with me. So my original numbers are from a Z50 clone tire that I was running the L125 on to get my 40mph around 6,000 rpm range. I roughly laid a tape across the tire and it looked around 15.5" OD.</p><p>I was hoping to just get my cruising speed (~40mph) down to a range where the engine wasn't buzzing so hard to keep up. It sounds like that may be a wishful thing for a L125. I felt the engine was happy up to about 5,500 rpm, then really whined over that. I felt like my low-end was way peppier than necessary so I figured I could gear a little taller.</p><p></p><p>I do expect the 17/31 was overly optimistic. Perhaps going to a 15/31 could find me a happier cruising point, sacrificing performance to overcome hills and such?</p><p></p><p>I guess another big question is... would a motor prefer to run higher rpm in a ratio it is more suited for over the full range, or be fed more fuel at lower rpm to TRY and achieve the same speeds?</p></blockquote><p></p>
[QUOTE="TNStreamerDreamer, post: 181651, member: 11742"] Man, thanks for digging in on this with me. So my original numbers are from a Z50 clone tire that I was running the L125 on to get my 40mph around 6,000 rpm range. I roughly laid a tape across the tire and it looked around 15.5" OD. I was hoping to just get my cruising speed (~40mph) down to a range where the engine wasn't buzzing so hard to keep up. It sounds like that may be a wishful thing for a L125. I felt the engine was happy up to about 5,500 rpm, then really whined over that. I felt like my low-end was way peppier than necessary so I figured I could gear a little taller. I do expect the 17/31 was overly optimistic. Perhaps going to a 15/31 could find me a happier cruising point, sacrificing performance to overcome hills and such? I guess another big question is... would a motor prefer to run higher rpm in a ratio it is more suited for over the full range, or be fed more fuel at lower rpm to TRY and achieve the same speeds? [/QUOTE]
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Aftermarket Engine/Parts
Lifan
New 125 Sputters through all throttle/idle
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