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09-16-2022, 09:13 PM | #1 |
Not Yet Wild
Join Date: Sep 2022
Location: North Ridgeville, Ohio
Posts: 57
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Yamaha G1 Speed Low Top Speed
I had recently got my g1 running and it seems to run pretty good. I am wondering if there are any ways to speed it up, i have put a longer screw in the governor spring and jetted the carb. I have a tachometer installed and it revs near 6000 rpm and gets only about 14 Mph i believe i have 18 inch tires as well just really wondering if there is a way i can speed it up. Any ideas will be greatly appreciated, Thank you!
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09-16-2022, 09:28 PM | #2 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,682
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Re: Yamaha G1 Speed Low Top Speed
Check your clutch operation. Worn clutches can degrade performance in major ways. After all, they are what transfers engine power to motive force.
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09-17-2022, 01:36 PM | #3 |
Gone Wild
Join Date: Jul 2008
Location: Reddick IL
Posts: 11,220
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Re: Yamaha G1 Speed Low Top Speed
Cp is right, also check that belt is not to long(stretched) or worn (to narrow).
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09-17-2022, 01:45 PM | #4 |
Not Yet Wild
Join Date: Sep 2022
Location: North Ridgeville, Ohio
Posts: 57
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Re: Yamaha G1 Speed Low Top Speed
It also seems that the clutch and belt get extremely hot and is even uncomfortable to just touch the belt. I might end up changing it. I'll let you guys know!
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09-17-2022, 08:41 PM | #5 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,441
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Re: Yamaha G1 Speed Low Top Speed
If you have heat on the belt, that means it's slipping. Could be a belt issue or clutch issues. Make sure you get a "OE" quality belt, I've never had good luck with cheap ebay or amazon belts.
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09-18-2022, 06:22 PM | #6 |
Not Yet Wild
Join Date: Sep 2022
Location: North Ridgeville, Ohio
Posts: 57
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Re: Yamaha G1 Speed Low Top Speed
I believe I have the original belt that came with it or might have only replaced once i will buy a OE one and install it.
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09-20-2022, 09:41 AM | #7 |
Not Yet Wild
Join Date: May 2021
Posts: 7
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Re: Yamaha G1 Speed Low Top Speed
The OEM Yamaha belt is only a few dollars more than the cheapo amazon/ebay ones. I would definitely get the OEM, like they said the belt makes or breaks the overall performance of the clutches. If it is too long or narrow it's like trying to start in 3rd gear in a 5 speed vehicle, and you never reach top speed either, really hampers performance.
You can make sharpie marks on the primary clutch sheaves and see how much of it rubs off after a top speed run. That shows you how far the belt is travelling up the sheave. |
09-17-2022, 08:45 PM | #8 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,682
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Re: Yamaha G1 Speed Low Top Speed
https://www.youtube.com/watch?v=uCEvBGT8twM
This video explains clutching and how it should work so you know what to look for |
10-03-2022, 12:10 AM | #9 |
Gone Wild
Join Date: Aug 2018
Location: Down under
Posts: 180
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Re: Yamaha G1 Speed Low Top Speed
I did that to my governor and it went like a bullet.....Jack it up and check the clutches are working properly.
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10-03-2022, 12:31 PM | #10 |
Not Yet Wild
Join Date: Sep 2022
Location: North Ridgeville, Ohio
Posts: 57
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Re: Yamaha G1 Speed Low Top Speed
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Tags |
speed governor |
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