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Post by armyboii on Nov 27, 2012 9:00:24 GMT -5
i have just got myself a 2010 btm 125 4 stroke but it will only go 65 my mates have 125cc and they got 75-90mph how can i get more top end speed  |
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Post by snugglebunny on Nov 27, 2012 9:22:40 GMT -5
125's that go 90 MPH 250's dont go 90 MPH!!!!! really? ?? you sure you people arent reading KPH??? |
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Post by sharks06lly on Nov 27, 2012 9:28:16 GMT -5
yep i got my money on them reading in kph i doubt it will actually do 55mph
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Post by rockynv on Nov 27, 2012 13:20:43 GMT -5
A 125 2 stroke might go faster but the 125 4 stroke should top out around 60 to 65 but will not last very long without a lot of work if you run it at those speeds. You want a solid 75 to 80 you need a 250. An Italian 250 with a 4 valve head and fuel injection can get you 90 depending on how the bike is outfitted but on a clone to get those speeds with any reliability you would need a 300 or 400.
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Post by skuttadawg on Nov 27, 2012 13:47:21 GMT -5
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Post by inkyben on Nov 27, 2012 13:56:02 GMT -5
I used the same NOS from BIS and the engine lasted maybe 300 miles.
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Post by skuttadawg on Nov 27, 2012 14:26:27 GMT -5
Heavier weights or taller gears
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Post by armyboii on Nov 27, 2012 16:47:55 GMT -5
my mates have 2 strokes with sports kits and they say it gose 76 mph
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Post by scootercapecod on Nov 27, 2012 17:19:44 GMT -5
Well, there's your answer in a nutshell....they have 2T's and you have a 4T which won't keep pace with that, these guys are correct, There's no replacement for displacement. A BBK might get you 25 or so more cc's BUT in reality gearing and/or weights are your next best bet short of a bigger motor itself.
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Post by skuttadawg on Nov 27, 2012 17:38:03 GMT -5
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Post by skuttadawg on Nov 27, 2012 18:34:24 GMT -5
Get some 50cc moped buddies to ride with so your always faster than them LOL
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Post by prodigit on Nov 27, 2012 20:07:57 GMT -5
My 260 gets 90 on the chinometer, lol  In reality it's closer to 82MPH. I'd agree that to go 65MPH on an 125 sounds just about right. With some mods, you could go upto 70MPH perhaps. GPS verified is different from the internal speedometer. On their bikes it might be 10MPH off; that would not be unheard of, on chinese bikes |
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Post by jazzman on Nov 27, 2012 20:24:08 GMT -5
Yea they are reading in KPH and then on top of that the speedos are off so they are running below 50mph.
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