Certified Clinician
Currently Offline
Posts: 83
Likes: 1
Joined: Jan 30, 2014 1:02:54 GMT -6
|
Post by racerx125 on Mar 1, 2014 23:37:31 GMT -6
ok, thanks Alley I'll replace the plates and see what happens
|
|
|
Post by kz1000st on Mar 2, 2014 8:46:00 GMT -6
Not to start an argument but bikes don't care what oil you use. I've run all sorts of oil over the years and none of my bikes had clutch slip. The fact that the bike stalled when you dumped the clutch doesn't mean a thing. It should stall if revs don't match rolling speed. I would perform this simple test.
Roll down the road in fifth and crack the throttle open. If the revs climb but speed doesn't pick up accordingly, the clutch is shot. The CG 250 is a single cylinder, pushrod motor without a ton of power. Cleveland Cycle Werks uses that engine and the bike moves but still.
I kind of find it hard to believe that you can't tell if the clutch is slipping. It's pretty obvious. I could see the boneheads at Sunny Sports sourcing it with the wrong gearing. A ridiculously big sprocket on the back would give you lightning acceleration, cause the bike to rev through a gear too quick and leave you with no top end.
|
|
Certified Clinician
Currently Offline
Posts: 83
Likes: 1
Joined: Jan 30, 2014 1:02:54 GMT -6
|
Post by racerx125 on Mar 2, 2014 12:06:21 GMT -6
When I do that my revvs are nearly maxed and my speed takes a while to even pickup and I I also get a very slow start from a stop and I even have to get throttle wide open when to be able to move from 1st gear otherwise the bike stalls. Rear sprocket is a 46t and front is a 17t
|
|
|
Post by Alleyoop on Mar 2, 2014 12:53:17 GMT -6
Don't want to argue either but your telling racer they took a bike that does 60+ and changed the sprockets so it would only do 40mph!! Who in their right mind would do that? You do realize they order them from china and sit in a crate until they are sold. Oh No wait, I think I will un-crate this and make this bike slower by changing and putting in a bigger sprocket on the rear and maybe a smaller sprocket in the front and really mess up the mind of the poor slob that buys it. And may I add you are 100% wrong on the oil for a WET CLUTCH system. Just because someone has multiple rides and been riding for a long time does not mean he knows a damn thing on how to fix them or diagnose a problem when it happens. That is why I have this in my sig: THOSE WHO DO NOT KNOW, DO NOT KNOW THAT THEY DO NOT KNOW Alleyoop
|
|
|
Post by kz1000st on Mar 2, 2014 14:03:46 GMT -6
OK, let me tell you this way. Short shift the bike so you're in fifth gear at 25 mph and then nail it. If the revs climb and the speed doesn't then the clutch is shot. Pardon me Mr. Oop but Sunny Sports is famous for doing stupid things. A 250 road bike showing up with 250 dirt bike gearing is not beyond their lack of quality control to happen. This engine also powers their dirt bike line. And for your information oil types in the clutch stopped being a problem in the 1960s. You couldn't run detergent oil in the early Honda 305 Super Hawks. Since then all wet clutches have been able to handle any oil. I won't get reprints of every owners manual since then but let me quote from my wife's Honda Rebel manual. "SG or higher except oils labeled as energy conserving on the circular API service label. SAE 10W-30" No mention of using motorcycle only oil, regular or synthetic or any other limitations. It has a wet clutch and last oil change I put Family Dollar 20W-50 in it without consequence. Wet clutches don't know or care what oil you use. That much I know from 50 years of riding bikes. I think you remember this picture of me in 1970 This ancient Yamaha had a wet clutch and you could toss any kind of motor oil in the transmission you wanted without issue.
|
|
|
Post by kz1000st on Mar 2, 2014 14:40:07 GMT -6
And since my opinion doesn't count ask Cyborg what would happen to a bike's top end if a two tooth smaller countershaft sprocket was accidentally put on that bike at the factory.
|
|
|
Post by Alleyoop on Mar 2, 2014 14:43:27 GMT -6
Wow!! so you can ride a bike, I think we all can and do, the big question is do you know what makes them tick and how to fix a broken tick Just like I said does not matter how long you have been riding 50 100 years or how many rides someone has or had. It is easy to jump on and just ride but when something goes wrong it is knowing how to fix them and know what a problem is caused by. But Racer will decide who's advice he see as being more plausible and what oil he can use with a wet clutch system and or order a less tooth rear sprocket and or a more tooth front sprocket. Alleyoop
|
|
Certified Clinician
Currently Offline
Posts: 83
Likes: 1
Joined: Jan 30, 2014 1:02:54 GMT -6
|
Post by racerx125 on Mar 2, 2014 14:55:42 GMT -6
In my opinion I think I'm just not ready for chinese motorcycle just yet because I am not sure who is right or wrong I have been riding for 2 years this motorcycle and problem just started to bother me because I can not ride on highway because 1. I can't reach 60 at all not even 55mph 2. I Have to run the engine at max revs and full throttle just to get near 35mph 3. My headlights don't work 4. Maybe 1st owner just didn't care for it and dropped it so much that it now has a heavy rattle 5, Bolts come loose because having engine at max revs vibrates em loose and might become dangerous to drive as I nearly lost my oil drain screw while I was riding due to vibration
|
|
|
Post by Alleyoop on Mar 2, 2014 15:13:51 GMT -6
What can I say, you have a 250 motor in there and it is running like a little 50cc at high revs.
Mr. KZ how fast would that bike in the picture go? Alleyoop
|
|
|
Post by kz1000st on Mar 2, 2014 15:22:06 GMT -6
I'm pretty sure I know how to fix them. Remember my Dad, the 87 year old that still rides a 750 Kawasaki, made me work at his Triumph dealership when I was 7. It shouldn't be revving that hard and the clutch might have burned because the internal clutch adjuster was never set and the clutch never fully disengages.
|
|
|
Post by kz1000st on Mar 2, 2014 15:24:25 GMT -6
What can I say, you have a 250 motor in there and it is running like a little 50cc at high revs. Mr. KZ how fast would that bike in the picture go? Alleyoop See the giant rear sprocket. Maybe 45 to 50. Dirt bikes then weren't built for much more.
|
|
Clinician
Currently Offline
Posts: 19
Likes: 0
Joined: Oct 13, 2013 4:08:42 GMT -6
|
Post by stevespidel on Mar 2, 2014 15:33:32 GMT -6
Haven't read the whole deal, but I have a Dong Fang 250 rtb-B and it came with a 45T rear sprocket. I changed it to a 38T and it performs much better. Several of the Dong Fang models seem to be shipping with the 45T sprocket. OK for a dirt bike maybe?
|
|
|
Post by Alleyoop on Mar 2, 2014 15:35:00 GMT -6
MAYBE 45 to 50!! is that your bike or not and is that you or not or just a picture you took watching a dirt bike race?.
So yes it has a big sprocket and it can go 45-50 you say and look at his sprocket not nearly as big as that one. But I see you know are sort of agreeing with me that his clutch is TOAST. Alleyoop
|
|
Doc's Anything Goes
Currently Offline
Posts: 536
Likes: 20
Joined: Mar 27, 2013 21:20:02 GMT -6
|
Post by davec on Mar 2, 2014 16:24:58 GMT -6
|
|
Certified Clinician
Currently Offline
Posts: 83
Likes: 1
Joined: Jan 30, 2014 1:02:54 GMT -6
|
Post by racerx125 on Mar 2, 2014 16:32:29 GMT -6
So if my clutch is toast do I have to replace everything including basket or just clutch plates?
|
|