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#1 |
Join Date: Sep 2022
Location: Ohio Valley
Posts: 707
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17/40 sprocket setup for hawk 250
Well, since it has become abundantly clear that I won't be taking the Hawk off road anymore, I am interested in getting the RPM's as low as possible for street riding. I've seen several people on Amazon switch to the 17/40 setup. I understand I will lose some oomph. But my question is, will my 128 tooth chain fit? I've seen on Amazon that the 17/40 and 128 tooth chains are often bought together, but I wanted to ask you guys before ordering. Thanks.
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2022 Hawk 250 |
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#2 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,660
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A 128 link chain will work.
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2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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#3 |
Join Date: Feb 2021
Posts: 989
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In my opinion , a 40/17 is not going to be a very good combination for you , nor for most people. I know you changed rear tire, and it reduced your gearing a little, but a 42-43/17 is really about as high as you should go. Some people that use the 40/17 have bikes like the TBR7, which has a smaller rear wheel, but on a Hawk, with an internally stock motor, and a hefty rider, living in a hilly part of the country, it's just going to make it hard to take off, and especially hard to take off from an upward slope. I think it would be harder on the bike than the few extra rpm that you want to reduce. I see post on the Facebook groups were people are recommending " crazy" combinations like 34/17. Jerry ran sprockets that ,if I remember right were 40/17, and was one of the few that was able to benefit from them, but he had a hotter motor, is under 200lbs, and lives in Louisiana.
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#4 | |
Join Date: Aug 2013
Posts: 255
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You should be aiming towards 1k rpm every 10 mph, or 5k rpm at 50mph. On my Xpect I run a 17/36t as ideal lowest gear. Been asking if the hawk has the same gear ratio as the Xpect, or not, and if it does, you should go with a 36-38t rather than a 40+t. |
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#5 | |
Join Date: Sep 2022
Location: Ohio Valley
Posts: 707
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Quote:
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2022 Hawk 250 |
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#6 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,660
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With the 40 tooth rear sprocket, you can always drop down to 16 or 15 tooth front if you find it to tall of a gearing. I use to swap the front sprocket when going from street to off road. Easy to swap back and forth.
__________________
2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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#7 | |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,660
|
Quote:
__________________
2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
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