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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 just got my Tachometer installed on my bike so when I get my bike up and running smoothly I ...  | | 
08-15-2008, 11:16 AM
| | Motorized Bicycle Member | | Join Date: Aug 2008
Posts: 22
| |  Re: How fast can your 80cc really go?
I just got my Tachometer installed on my bike so when I get my bike up and running smoothly I will find out how fast I can get it. I have to break it in first. |
08-15-2008, 04:18 PM
|  | Motorized Bicycle Elite Member | | Join Date: May 2008 Location: Mesa, AZ
Posts: 290
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by Easy Rider  The highest I got on my stock HT was 34mph with a 44 tooth sprocket. | This is about the fastest that I've gone with the same setup as well. Engine was turning 7400rpm! I feel bad now that I did it. Probably took some life out of the thing. |
08-15-2008, 05:15 PM
|  | Santa Cruz Scooter Works | | Join Date: Jan 2008 Location: Nor*Cal
Posts: 952
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by datz510 This is about the fastest that I've gone with the same setup as well. Engine was turning 7400rpm! I feel bad now that I did it. Probably took some life out of the thing. | That's what happened to me and I did take the life out of that motor! haha! Lucky for me, Dean helped me replace and fit some quality japanese and italian bearing. After that my HT motor ran like a champ and I could go WOT without the motor sounding like it was struggling. |
08-15-2008, 07:44 PM
|  | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,081
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by tylerlough More oil the better in my view, just switched over to 22:1 from 16:1 |
Too much oil causes rapid build up of carbon, sticking rings and plugged baffles.
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If it ain't broke, and you mess with it long enough, it will be. |
08-15-2008, 09:09 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Bellingham, WA
Posts: 535
| | Re: How fast can your 80cc really go?
39.1, flat road, no wind, 6th gear. Probably could hit 40 if I got in a tuck position. |
08-16-2008, 03:01 AM
|  | Motorized Bicycle Elite Member | | Join Date: Jul 2008 Location: OC, Ca
Posts: 285
| | Re: How fast can your 80cc really go?
Last week got clocked at 41 mph by sheriff on 39 tooth sprocket, dellorto carb with modified jet, modified Tomos A3 bullet exhaust, a helmet and goggles. Was then issued a speeding ticket on a 35 MPH zone. Engine said no more riding yesterday. It felt great.......but now I am MBless.
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08-16-2008, 06:52 AM
| | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,081
| | Re: How fast can your 80cc really go?
Quote:
Originally Posted by Ghost0 39.1, flat road, no wind, 6th gear. Probably could hit 40 if I got in a tuck position. |
How close is that compared to a stock CIF (chinese in-frame) final drive ratio?
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If it ain't broke, and you mess with it long enough, it will be. |
08-16-2008, 07:12 AM
| | Motorized Bicycle Senior Member | | Join Date: Jun 2008
Posts: 55
| | Re: How fast can your 80cc really go?
my bike went tops of 41 on flat with a 27t sprocket. the revs were not up tho and i would say that the 27 tooth is too small. with a 32T it would prob be a better overall
high speed setup. maybe for a burst the 27T with a nitrous charge would get it to 45 or higher. the mph seems way harder to get increased when you start hitting 35+
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08-17-2008, 12:26 AM
| | Motorized Bicycle Senior Member | | Join Date: May 2008 Location: Mishawaka, IN
Posts: 89
| | Re: How fast can your 80cc really go?
With enough power that 27t is good to about 50. |
08-17-2008, 03:55 AM
| | Motorized Bicycle Member | | Join Date: Aug 2008
Posts: 22
| | Re: How fast can your 80cc really go?
Wow fifty mph seems pretty fast for a beach cruiser. So if the less teeth on the sprocket the faster it goes. Which sprocket teeth count do you guys think is the best option in speed and torque? | | Thread Tools | | | | Display Modes |  Linear Mode | 
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