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Post by 4950cycle on Aug 18, 2016 19:50:10 GMT -6
Show me a pic of your scooter front end and I might be able to tell you which windshield. I at least know exactly just by looking at it which windshield fits the Honda Reflex looking Chinese 250 scoots.
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Post by 4950cycle on Aug 17, 2016 22:48:13 GMT -6
I had some trouble this week that stopped the scoot. I had to put a fuel pump in her. So far it looks like it fixed the problem . Then put my scooter up on the center stand and took it up to the rev limiter a couple times to find out where it topped out. The RPM went up to about 8400 without breaking up at all. Any higher and the RPM was unstable. But it would go up to about 8700 as indicated on the not so precise scooter tach. What that means is I might get my 5 mph on top if my variator isn't maxing out already. And 16.7 HP will haul my 260 lbs any faster than it already will go. While I've got the belly and side exposed I am gonna do a much needed valve adjustment. " Again " About the 4 th one I've done. "THEN" next on the agenda will be that Marking the inside of the variator test we talked about. Thanks for the info cloudsifter.
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Post by 4950cycle on Aug 17, 2016 22:37:42 GMT -6
So far it looks like it fixed the problem (Fuel pump). Then put my scooter up on the center stand and took it up to the rev limiter a couple times to find out where it topped out. The RPM went up to about 8400 without breaking up at all. Any higher and the RPM was unstable. But it would go up to about 8700 as indicated on the not so precise scooter tach. What that means is I might get my 5 mph on top if my variator isn't maxing out already. And 16.7 HP will haul my 260 lbs any faster than it already will go. While I've got the belly and side exposed I am gonna do a much needed valve adjustment. " Again " About the 4 th one I've done. "THEN" next on the agenda will be that Marking the inside of the variator test we talked about
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Post by 4950cycle on Aug 17, 2016 22:25:46 GMT -6
So far it looks like it fixed the problem (Fuel pump). Then put my scooter up on the center stand and took it up to the rev limiter a couple times to find out where it topped out. The RPM went up to about 8400 without breaking up at all. Any higher and the RPM was unstable. But it would go up to about 8700 as indicated on the not so precise scooter tach. What that means is I might get my 5 mph on top if my variator isn't maxing out already. And 16.7 HP will haul my 260 lbs any faster than it already will go. While I've got the belly and side exposed I am gonna do a much needed valve adjustment. " Again " About the 4 th one I've done. Sorry, no thread high jacking intended. Glad your getting some place on your scooter project. Looks like you'll be riding sooner or later Cloudsifter.
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Post by 4950cycle on Aug 17, 2016 13:17:23 GMT -6
Got my fuel pump today. pretty sure that's what is wrong. But I hope I don't have CDI trouble too. Now ya got me skeared ! The trouble my scooter is having can act similar in some ways. Just started a week ago when it stranded me. PS I will have to do the same with my fuel lines also
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Post by 4950cycle on Aug 17, 2016 11:40:23 GMT -6
Man ! That air box was taking a beating. I know why your scooter got all screwed up Dude. You were trying to compete in Moto Cross racing with it it looks like ! "Scooters aren't for that"  |
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Post by 4950cycle on Aug 16, 2016 12:19:59 GMT -6
As jct842 has said, It also depends on which engine you have. I have the Yamaha Clone (Linhia). Sorry I didn't catch that before I wrote the post above about the furniture blanket valve adjustment. My advice only works on a Linhia AFAIK. "AND" How this guy said in the above link, This is how I deal with my exhaust valve clearance issue. Works for me. I went the Loctite route first to no avail. So I guess my exhaust valve is not stretching with heat so to speak. The valve seat is receding instead. Which I hate to say, Means its time for a replacement head to stop it. The seat is in the head. If the metal is not up to the job of retaining a valve seat as time goes on then it is part of the main body of the head. Means the head has to go ! I don't like the sound of that myself.
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Post by 4950cycle on Aug 14, 2016 16:20:55 GMT -6
So I am to gather that ultimately the CDI was the main culprit ? Of coarse beside the small little maint. and nip and tuck problems ? If so Good show in trouble shooting your problem , help or no help. When you have compounded problems plagued by an electrical problem also, Can't get much harder to diagnose my friend.
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Post by 4950cycle on Aug 13, 2016 23:57:05 GMT -6
I am asking if anyone ever put 15 gram sliders in their Linhia 257 cc scooter ? And if so could you tell me the effects they had on your scooter good or bad. Or , If you have experimented with any weight sliders and feel like posting your scooter's loss or gains it would be greatly appreciated and enlightening to some of us.
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Post by 4950cycle on Aug 13, 2016 8:20:53 GMT -6
I just read my last post. Didn't mean to sound insulting jct842. I just never niticed any particular gains from a pod filter and opened up exhaust besides my cycle sounding faster with all the extra noise. But I was also looking for acceleration then. Now I'm looking for top speed. I'm looking for a different benefit now. Seems like the little 257cc one cylinder is already getting plenty of breathing now with stock setup. But I don't want to be to closed minded and shoot myself in the foot. Thanks again jct842 for the sound advice.
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Post by 4950cycle on Aug 12, 2016 13:59:26 GMT -6
Thanks for the verification on my thinking. I will get to the variater marker test soon. Then on to something else here, I've heard mixed opinions on this 32mm carb with 125 main jets I ordered. ( Lihia 260s come with 30 mm carb, 110 I believe main jets ). Some say it will actually hurt my performance, Others say it should get me some small gains. And no, I'm not putting expensive , noisy exhaust and a pod air filter. The only time I have ever got any gains from these mods is when my motor had a lot of head work an Carb work done on a Kawi I had IMO . My exhaust breaths plenty for my new carb. , And I would rather be taking in cooler air from outside the scooter (like my stock big air cleaner)than sucking in hot air from my engine bay with a so called high performance pod filter. Any thoughts on this 32 mm carb I speak of ?
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Post by 4950cycle on Aug 12, 2016 9:39:41 GMT -6
First of all what is the rpm at top speed? Do you have any big hills or are you riding in pretty flat territory? Any Idea what the weights are in your variator? Is your belt fairly new and good condition? If you go lighter with weights/sliders it is like going to a lower gear. Heavy weights similar to shifting from 4th to 5th gear. You only have so much power and if geared to high you can go slower. Geared to low and you run out of rpms before you get to the speed you want. Open up the variator and find what their weights are. Clean it out and then take a ride and note the rpms at top speed and get back here with results. If it is gunked up you may be surprised. The scoots onlys got 7,000 miles on her. I doubt she's got much wear or gunk built up. Got my Gel Batt finally. She ran pretty good yesterday after a fresh fill up of BP premium. The scoot tach said 6900 RPM at speedo indicated 68-69 mph. So I checked stock Linhia 257 cc specs and they said 16.7 hp at 6500 rpm. So, what this tells me is is I'm most likely already getting all she has to offer with me being so big and such. No ? Or should I hope I can over rev her a bit for lets say 74-75 mph ? I'd be plenty happy with almost 75 mph without being in a tuck. And small rolling hills with some flat sections BTW. Thanks so much for the coaching  PS. the motor is not buzzing that bad at 6900 RPM 8,000 red line btw. Read more: scooterdoc.proboards.com/thread/13008/mph-more-top-speed-mp250a#ixzz4H8IJdo8O |
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Post by 4950cycle on Aug 12, 2016 9:18:29 GMT -6
The scoots onlys got 7,000 miles on her. I doubt she's got much wear or gunk built up. Got my Gel Batt finally. She ran pretty good yesterday after a fresh fill up of BP premium. The scoot tach said 6900 RPM at speedo indicated 68-69 mph. So I checked stock Linhia 257 cc specs and they said 16.7 hp at 6500 rpm. So, what this tells me is is I'm most likely already getting all she has to offer with me being so big and such. No ? Or should I hope I can over rev her a bit for lets say 74-75 mph ? I'd be plenty happy with almost 75 mph without being in a tuck. And small rolling hills with some flat sections BTW. Thanks so much for the coaching PS. the motor is not buzzing that bad at 6900 RPM 8,000 red line btw. |
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Post by 4950cycle on Aug 10, 2016 9:19:33 GMT -6
BTW, Thank you for responding. I believe you are right in saying basically "lets see what the motor is doing during top end first" Then change RPM per speed (sliders) once we know something. Is that what you are saying ?
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Post by 4950cycle on Aug 9, 2016 13:03:19 GMT -6
I was told the quickest and one of the easier ways to get quicker acceleration and / or a bit more top end is to modify the variator on a scooter CVT. I myself am plenty satisfied with my acceleration. Even with my 260 lbs. 6 '2 self. But I would like a wee bit more top end. The only aftermarket variator I could find for a 257cc (260) Linhia engine was a Doctor Pulley Linhia " ATV " variator on Ebay. Now I know the Starter clutch for a 260 Linhai "ATV" has more spline teeth than a the Scooter 260 . I wonder if the variator has differences also ? And could I eeeak 5 more MPH with a variator and slider modification even so ? Any feed back fellow Scoots ? btw I go 63-67 mph now per scooter speedo. PS I've decided to go for a 32mm Performance carburetor instead of my stock 30 mm. And some Dr. Pulley sliders instead. Waiting on the 32 carb now. Haven't ordered the sliders yet. One thing at a time I say. Read more: itistheride.boards.net/thread/9619/mph-more-great-257cc-linhai#ixzz4Gra5mUt3 |
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PS. the motor is not buzzing that bad at 6900 RPM 8,000 red line btw.