HenryG101 Posted June 21, 2020 Share Posted June 21, 2020 So, I use a 50cc SYM Jet 4 50cc moped, I'm 17 and see no need to get a 125 as I live in the city. However, I would love to be able to get 5-15 extra mph out of this moped.I wondered if anyone had any easy Idea for a very novice level mechanic.Thanks Dont hate me for using a moped lol Quote Link to comment Share on other sites More sharing options...
skyrider Posted June 21, 2020 Share Posted June 21, 2020 are you sure your 50cc is restricted Quote Link to comment Share on other sites More sharing options...
Tiggie Posted June 21, 2020 Share Posted June 21, 2020 The restriction on a 50cc (and 125's) nowaday IS the engine. It's not like in the 2 stroke days when you could take something out of the exhaust and get an extra 10hp Quote Link to comment Share on other sites More sharing options...
skyrider Posted June 21, 2020 Share Posted June 21, 2020 (edited) yea you cant put a pea shooter on it like we used to on our fizzies Edited June 21, 2020 by skyrider Quote Link to comment Share on other sites More sharing options...
Bender Posted June 21, 2020 Share Posted June 21, 2020 Unfortunately the limiting factor is the law of physics.It's just underpowered. Quote Link to comment Share on other sites More sharing options...
skyrider Posted June 21, 2020 Share Posted June 21, 2020 yep so was ours but that didn't stop us from trying to get that extra 1 mph out of them it was a case of beat your mate from the lights or blow them up in the process Quote Link to comment Share on other sites More sharing options...
HenryG101 Posted June 21, 2020 Author Share Posted June 21, 2020 Yeh its 50cc 4 stroke and does about 27 mph. Quote Link to comment Share on other sites More sharing options...
Tiggie Posted June 21, 2020 Share Posted June 21, 2020 That sounds about right for a Chinese 50cc to be fair. I used to have one back in 2001ish. I was behind a tractor and he moved over to side to let me pass and I couldn't do it Quote Link to comment Share on other sites More sharing options...
HenryG101 Posted June 21, 2020 Author Share Posted June 21, 2020 Yeh its not brilliant lots of people say to remove a limiting washer in the transmission and lots of people say buy a race CDI. Quote Link to comment Share on other sites More sharing options...
skyrider Posted June 21, 2020 Share Posted June 21, 2020 strewth i could get 45 out of my fizz standard Quote Link to comment Share on other sites More sharing options...
Mississippi Bullfrog Posted June 22, 2020 Share Posted June 22, 2020 Yeh its not brilliant lots of people say to remove a limiting washer in the transmission and lots of people say buy a race CDI. Have any of these lots of people actually done either of these suggestions? And if so did it work?Bear in mind that if you do something like this your insurance will want to know about it. It's usually cheaper and more effective to keep it standard and trade it towards a used Japanese 125. For city riding they're better suited than a 50cc machine. Quote Link to comment Share on other sites More sharing options...
Bender Posted June 22, 2020 Share Posted June 22, 2020 If your moped has a cdi that is restricted then a derestricted cdi I guess race cdi sounds better on ebay, will allow it to rev higher, as its a modification from standard then you should inform insurance.If its not restricted your better off spending the money at mc'd its unlikely a stronger spark will make any difference. Quote Link to comment Share on other sites More sharing options...
XTreme Posted June 22, 2020 Share Posted June 22, 2020 That sounds about right for a Chinese 50cc to be fair. I used to have one back in 2001ish. I was behind a tractor and he moved over to side to let me pass and I couldn't do it Quote Link to comment Share on other sites More sharing options...
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