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Post by 4950cycle on Apr 18, 2013 9:47:01 GMT -5
Onewheeldrive, Put one of these polls on the 250 and up category also. Good topic for any scooter size.  And jeepsteve, Is that a real picture of you  |
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Post by 4950cycle on Apr 17, 2013 20:10:57 GMT -5
Yea Tomfl62, I've made a trap door for the exhaust valve adjustment. "BUT " I still havn't figured out how the heck I'm going to get it to TDC on the right stroke no less without having to pull all the covers off ! D8 I will check utube as you have said.
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Post by 4950cycle on Apr 17, 2013 11:54:45 GMT -5
Oh, And hey Oldmopar. Speaking of Mopars, Its not just late model cars. Have you ever had to give a 1969 Plymouth Fury with the regular 383 a tune up ? Theres 1 or maybe even 2 sparkplugs it is damn near impossible to get out and replace. So bad that 99% of mechanics never replaced those plugs when giving that car a as said tune up. I remember finally getting them out and the whole electrode and all would be burned off from never being replaced.
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Post by 4950cycle on Apr 17, 2013 11:30:10 GMT -5
Sorry to tell you taildrag, If it is a Linhia 257cc powerplant you have it will likely need a valve adjustment to make it stop stalling at slowdowns and Idle. Its just the nature of this engine it seems. And from what I've heard most of the 250 Rocketas and 250 JCLs have these Linhia motors. Its the 250 motor with the cylinder lying down instead of being vertical. Great motor IMHO otherwise. But this is one glaring fault they have. Some say once you do it a couple times they stop needing it so often. But I havn't got to that point yet so no comment.
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Post by 4950cycle on Apr 17, 2013 10:37:06 GMT -5
You missed me allyoop. I have feeler gauges. What color would you like one in ? ;D No, I am developing a quicker method to open up the exhaust valve clearance and button the scoot right back up. And besides , Remember me ? I'm the guy from that other scooter forum that sets both my valves at .008 . Works fine and gives you longer to ride in between these way to frequent necessary valve adjustments. To much valve clearance will never hurt your motor. To little clearance can burn a valve remember. And before I get a bunch of wasted feedback, to much clearance is fine as long as your motor is running good at these clearances I speak of. I never said gap them so wide the motor won't perform correctly. This Linhia runs great and gets dependable 60-67 mpg at this setting.
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Post by 4950cycle on Apr 16, 2013 20:42:08 GMT -5
Welcome to scootering the Chinese way !  These people must really Hate US  I am dealing with my own pile of scooter parts in the driveway. Every time you change a lousy spark plug you have to call the President with these things. In other words, everything on these things is ten times harder than it has to be . And with just a little design forthought it didn't have to be this way. |
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Post by 4950cycle on Apr 16, 2013 20:13:45 GMT -5
Is there anybody that happens to know how many turns on the valve adjuster = how many thausands of an inch ? For instance , 3/4 of a turn on the adjuster opens the gap .001 .  |
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Post by 4950cycle on Apr 12, 2013 23:22:34 GMT -5
Remember me alleyoop ? I'm the one that adjusted these valves at 6 and 8 thousents instead of 4 and 6 like you guys told me to. And it still closed up on me ?! Wow, these heads must be made of beer cans ! D8 Man, I hope your wrong, that was a real chore man ! Every 1500 miles or so ! man what gives !
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Post by 4950cycle on Apr 12, 2013 18:24:18 GMT -5
Well, here I am again. My girlfriend is having trouble again with stalling with the JCL 257 Linhai . Stalling when comeing to a stop, Stalling when slowing down, Stalling 20 times when cold. Anyway, I adjusted the valves at about 1,100 miles. It Fixed the stalling till about 3,500 miles. Now here we are again. Stalling, stalling and stalling some more. I checked the fuel pump. It pumps enough fuel to run a small V8 so that's not it. Not to mention the starter clutch being defective and needing replaced. It was in the middle of the motor so tons of work ofcaurse. This thing has been so much more work than fun since we got it from Killermotorsports. This thing would have been an absolute money pit had I not been around machanics my whole life, And the guys from Scootdawg cheering me on and giving me pointers. Any ideas ? |
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Post by 4950cycle on Mar 22, 2013 11:04:37 GMT -5
Again I've heard from others with the exact same bike that that is normal wear for the stock tire they came with in 2007. It was a new old stock scooter btw. I've riden all around her going down the road and the scooter looks straight as an arrow. I've been around bikes most of my life and you can usually see with the naked eye when a bike is out of wack bad enough to wear tires weird. My Kawi Ninja is not absolute perfectly square and it doesn't wear tires out of the ordinary. But thanks for the knowledgable input.
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Post by 4950cycle on Mar 22, 2013 10:57:09 GMT -5
Now the good. She loves riding it (the JCL) . Besides the tire issue I think it's a neat little fun vehicle and is actually able to do two lane hwy detail without a hitch. pretty amazing for a 260 cc four stroke single cylinder. And takes almost no special training to ride also. And I can't believe it out accelerates my Ninja 250 under normal stop and go (not talking about out and out drag racing). I just thought Id give it a fair shake. If  |
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Post by 4950cycle on Mar 22, 2013 10:43:33 GMT -5
Girlfriends got a MP 250A JCL. It was mighty effed up coming from Killermotorsports. Needed all kinds of correction work a new vehicle shouldn't have needed. Fix ignition, replace starter clutch.  Anyway, I got that out of my system. I couldn't ignore the fact that it wore the stock rear tire totally out in 2,200 miles. Talked to other scooter owners on good ole Scootdawg and they said this was normal. I put a Michelin Pilot on it to see if I could get the cost of operation per mile below my  Geo metro car. Yea ! that's right. I can drive my car cheaper than this 250 scooter because of frequent tire replacement needed on the scooter. I did a cost analasis and my Geo cost 10 cents a mile counting tire wear. The JCL MP 250A cost 10 and a half cents a mile because of all the tires it gobbles up in operation. All cost (fuel) taken into account. Now I will keep you posted on how the Michelin fares in comparison. It might change the whole total cost per mile of operation situation. I certainly hope so ! Talk about a false economy !  PS Sometime the real world of actual numbers can ruin your day.  |
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Post by 4950cycle on Mar 22, 2013 10:10:13 GMT -5
Well Yea Rockynv, Spending a bunch of $ is always the way to go rather than working for a result  . That was no mistery . This info was for guys/gals that can't just go buy an Italian EFI scooter. Everybody knows that solution. D8 |
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Post by 4950cycle on Mar 4, 2013 22:02:21 GMT -5
No, I'm sorry, I don't quite buy it  . I bought my girlfriend a 260 linhia powered Honda Reflex copy (JCL MP 250 A) and had nothing but trouble that they tried to blame on a buyer (me) bad PDI. Sorry, won't fly here. I could redesign this scooter much less do a compident PDI on it. It had a bad starter clutch (wouldn't catch), valves so tight it wouldn't even Idle, and falling apart ignition switch that worked intermittenly (when it wanted to) right out of the crate. I just bought the parts and installed them rather than go round and round with Killermotorsports. A starter clutch on a 250 scooter is not cheap and quite a big chore to have to do to a brand new scooter. And the ignition switch was no party either. No, the warranty you speak of just got worse because the company wants to keep the profit margin up by not having to send customers expensive parts that should have been good in the first place. What doe's a PDI have to do with Bad factory adjustment on valves, bad internal starter clutch I ask you, poor QC on factory adjustments ? I know it's Chinese but theres no excuse for what they put me through. I AIN"T NO PDI PROBLEM ! |
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Geo metro car. Yea ! that's right. I can drive my car cheaper than this 250 scooter because of frequent tire replacement needed on the scooter. I did a cost analasis and my Geo cost 10 cents a mile counting tire wear. The JCL MP 250A cost 10 and a half cents a mile because of all the tires it gobbles up in operation. All cost (fuel) taken into account. Now I will keep you posted on how the Michelin fares in comparison. It might change the whole total cost per mile of operation situation. I certainly hope so ! Talk about a false economy ! 
PS Sometime the real world of actual numbers can ruin your day.