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How fast can your 80cc really go?
Discussion at Motorized Bicycle Engine Kit Forum in the High Performance Bicycle Engine Tips forum. I highly recommend lapping in your needle and seat! Re:Stock carb mod...  | | 
06-30-2009, 09:14 PM
| | Motorized Bicycle Senior Member | | Join Date: Feb 2009 Location: Billings, Montana
Posts: 51
| |  Re: How fast can your 80cc really go?
I highly recommend lapping in your needle and seat! Re:Stock carb mod |
07-01-2009, 06:43 AM
|  | Motorized Bicycle Senior Member | | Join Date: Jun 2009 Location: Portugal
Posts: 62
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by Masterm222  I highly recommend lapping in your needle and seat! Re:Stock carb mod | Can you post a pic how to do that?
thanks   |
07-01-2009, 06:57 AM
|  | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,121
| | Re: Respuesta: How fast can your 80cc really go?
Quote:
Originally Posted by Echotraveler i should make a correction to mine..
i am actually making 20 WOT 22 maxing it out for a while......with a 44t and stock exhaust....im going to lower the sprocket to a 40T and a leaner jet...lets see what i can do..hope to get 30 wot 20 cruise....
cant really believe people are going 35 on a 44t....but thats me | Some will break 40 and some will not break 25 mph, it's all part of the "charm" of the china in frame two stroke bicycle motor kit.
__________________
If it ain't broke, and you mess with it long enough, it will be. |
07-01-2009, 07:25 AM
| | Motorized Bicycle Elite Member | | Join Date: May 2009 Location: Maine
Posts: 193
| | Re: How fast can your 80cc really go?
40? really on a 44t? wow... I can hit 35, but at that speed I'm running pretty rich. So a smaller jet would probably get me up to 40, or at least save some fuel. My engine is pretty well balanced though, I don't have nearly the vibration issues a lot of people talk about though.
I think I got lucky on the HT lottery haha |
07-01-2009, 07:44 AM
| | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,121
| | Re: How fast can your 80cc really go?
Well the redline is supposed to be around 7300 rpm I think, but that can vary by a couple thousand either way.
__________________
If it ain't broke, and you mess with it long enough, it will be. |
07-01-2009, 08:55 AM
| | Motorized Bicycle Senior Member | | Join Date: Jun 2009 Location: Portugal
Posts: 62
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by Bikeguy Joe Well the redline is supposed to be around 7300 rpm I think, but that can vary by a couple thousand either way. | 80cc should go 13000 rpm at least /dreaming   |
07-01-2009, 10:32 AM
| | Motorized Bicycle Elite Member | | Join Date: May 2009 Location: Maine
Posts: 193
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by DanielMaia 80cc should go 13000 rpm at least /dreaming | if you have the crankshaft balanced, and maybe some upgraded bearings, there is no reason it shouldn't. |
07-01-2009, 11:30 AM
| | Motorized Bicycle Senior Member | | Join Date: Jun 2009 Location: Portugal
Posts: 62
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by chrisme if you have the crankshaft balanced, and maybe some upgraded bearings, there is no reason it shouldn't. | Is there a way to remove the crankshaft and balance it? Or really no way to think about it? |
07-01-2009, 05:20 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2009 Location: upstate NY
Posts: 1,452
| | Re: How fast can your 80cc really go?
these engines have a max rpm of around 7500-8000 redline and thats pushing it. |
07-02-2009, 04:55 AM
| | Motorized Bicycle Senior Member | | Join Date: Jun 2009 Location: Portugal
Posts: 62
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by Cabinfever1977 these engines have a max rpm of around 7500-8000 redline and thats pushing it. | With a 44T sprocket and 50kph (31mph) rpm=? around 7500rpm?
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