06-19-2022, 09:37 AM | #1 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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CG250 Clutch Spring upgrade.
It's been posted on the Facebook groups here or there, but I haven't seen anything here, so for posterity sake I want to include my own review of it.
Not my discovery, just borrowing somebody else's hard work and then giving it my seal of approval. I also included it in the Upgrades part of the resource guide. I need to take the time to clean that up and add some stuff... someday. Anyway, the clutch springs in question are these. EBC CSK41 https://www.amazon.com/dp/B001IUMGEY...Gbp4Rm-fWOvV3c They are a tad shorter than the stock Hawk springs, but they are quite a bit stronger. They still preload properly when installed, and the clutch feel is greatly improved. More importantly, and the main reason I did it... Clutch fade is greatly reduced. The clutch feel when the engine gets really hot is massively improved. I wish I would have done these from day one. Especially considering they are only $14. and can be installed in maybe 30 minutes or so. Just make sure when you remove and install the pressure plate with the bolts to back them off evenly so you don't break the pressure plate. A couple turns at a time in a criss-cross pattern until they seat. I used the final torque spec for a CRF230F Clutch which is 12Nm/9ft-lb/108in/lb
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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06-19-2022, 10:08 AM | #2 |
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Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
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Good information on the clutch springs. I found my clutch on my Hawk are getting weak. Hopefully the new KPX 250 has better quality. If not, this might work on it as well.
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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 Last edited by JerryHawk250; 06-19-2022 at 11:12 AM. |
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06-19-2022, 10:20 AM | #3 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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It's quite possible. I doubt the clutch design would have changed much on the newer gen motors. I am just waiting to hear your opinion on the KPX before I decide to pull the trigger on one or not myself. I am kind of tempted to turn my Hawk into a Dual sport rat bike with a 19" front wheel from a Brozz with wider rims for both wheels and ditching all the plastic. We shall see.
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06-19-2022, 10:30 AM | #4 | |
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Join Date: Oct 2016
Location: Houma, La.
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Quote:
The rat bike sounds like a cool build. Don't put any ideas in my head.
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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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06-19-2022, 10:48 AM | #5 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Quote:
I haven't decided what I want to do yet. I just think an 18 rear 19 front combo with fatter tires (130 rear 100 front maybe?) would be kind of a fun change of pace. Ditch the oil cooler, keep it lower in the back and drop the nose a tad with that front wheel and maybe raise the forks up. Make a simple under seat tray for the battery and electronics. I already have all the stuff for a round headlight. Maybe run an old school front fender from a 70's SL250.
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06-19-2022, 06:34 PM | #7 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Quote:
It still does it after the springs too. No signs of odd wear or damage I may just order another clutch pack and swap the springs over. Or I will just let it be until the clutch fails... if it ever does lol
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06-19-2022, 08:00 PM | #8 |
Join Date: Feb 2021
Location: Northeast
Posts: 934
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Hmmmm. Although my clutch has always felt rather mushy, weak Springs I guess, I’ve never had any grief out of it. Can sticky plates have something to do with the type of oil used?
I have been using that mobil v-Twin 20w-50 stuff you find in all the stores since my original Rotella break in period. Not because I thought it was better, but because it’s all I could find for a wet clutch for a while. Rotella was out of stock for a long time. It really seems to do my bike well. And I’m usually riding in heat so the 20 W 50 isn’t bad. I’m really hoping for this rat bike so I can see some pictures of one. Ha ha
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2020 Lifan x-pect |
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06-19-2022, 08:57 PM | #9 | |
Join Date: Dec 2018
Location: PNW
Posts: 983
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Quote:
After it started on the Hill now it makes this zzzzzzzzzz sound when first started but it goes away after awhile. I too from the get go have had clutch fade issues and have adjusted it outside any reasonable adjustment guide but if you have bad fade you do what you do to get it to work. It also works good no sign of slippage yet. I am going to open her up and try the springs. Any ideas on an upgrade performance option for a pack or friction disc? |
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06-19-2022, 11:00 PM | #10 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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No, it has zilch to do with the type of oil. I ran the same oil in my first Hawk, and I've run this oil in other bikes before. Sticking clutch plates usually happens when a bike sits for a long time. That's why my issue with them is a bit weird, but it has done it since day 1.
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06-19-2022, 11:02 PM | #11 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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I don't personally know of any. I wouldn't doubt if it shares clutch discs with a large number of small Honda motors though.
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