Clinician
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Post by bolts on Jul 11, 2014 9:09:15 GMT -6
Makes sense, I will give that a shot. Would that affect my top speed as well?
Worst case scenario:
Would blown rings cause the top speed to drop as well? Is there a way to tell if they are bad without taking it apart, or do I have to just start take the time and do it?
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Post by bolts on Jul 10, 2014 9:56:40 GMT -6
I let go of the throttle. The problem is the fact that there is very little acceleration, and it won't go above 20-25 mph, where as before, it was going 35-40 mph. I checked the valves, changed out the spark plug and plug wire, vacuum line, fuel line and filter, changed the belt, and checked the variator and clutch. The strangest part of all of this is the fact that it was working fine one day, and then this the next.
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Post by bolts on Jul 10, 2014 0:06:17 GMT -6
I thought of that, but the belt is brand new, and the clutch is tight on it, and the variator has no grooves or anything like that. Wouldn't it make a noise or something like a fan belt on a car if it was slipping as well?
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Post by bolts on Jul 9, 2014 12:08:52 GMT -6
here is the video as requested
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Post by bolts on Jul 9, 2014 0:22:31 GMT -6
Not sure the best way to upload, but I can do that
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Post by bolts on Jul 8, 2014 22:21:13 GMT -6
So it feels like the revs are about consistent with the speed. I changed the CDI and it felt like it got a little better, but that may be psychological... I checked the fuel and vacuum lines, and they looked fine. I even tried changing out the plug wire. Still nothing. So I pulled off the left side cover and checked the roller weights, and they all seem to be fine, no flat spots or anything. And still no difference. As for the clutch, everything looks good, I don't see any loose springs, and it is tight getting the belt in. I am really getting frustrated with this scooter, the icing on the cake was when the center stand got hooked up on my garden hose and snapped the spigot off the wall, it was a pretty geyser, but I had to spend time fixing that.
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Post by bolts on Jun 28, 2014 9:22:19 GMT -6
Sounds like as good a plan as any. Could it be something electrical, like the CDI or something like that? What about the variator. Planning ahead just in case
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Post by bolts on Jun 27, 2014 11:20:19 GMT -6
So I have a scooter that I have been working on, the scooter is a 50cc 4stroke, and it has been running really well. Topping out between 35 - 40 mph. Pulled in, and from that time to the next, something has happened. It is now only getting up to 20mph, and is slow on acceleration. I cleaned out the carb, adjusted the valves (.08mm), thought about playing with the timing, checked the spark plug, even changed the belt (the old one was a bit thinner, and showing a few cracks). But there has been no change, weirdest thing, fine one day almost dead the next. Open to suggestions.
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Tires
by: bolts - Jun 6, 2014 9:50:51 GMT -6
via mobile
Post by bolts on Jun 6, 2014 9:50:51 GMT -6
Great advice, I will check for clearance and see what that will allow me to do.
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Tires
by: bolts - Jun 5, 2014 17:58:40 GMT -6
via mobile
Post by bolts on Jun 5, 2014 17:58:40 GMT -6
So I have a guy who had his tire go flat, and is looking to get it fixed. It is a 3.00-10 tire, but all I have is a 3.50-10, is there going to be a problem with putting the 3.5 tire on the 3.0 rim?
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Post by bolts on May 5, 2014 22:00:28 GMT -6
Update! Ok, I got the new stator, and as I was taking the old one off, I saw that the green wire was a bit messed up, so it is probably the cause of that not working. After I put the new one on, everything started up and ran just fine, now it is a matter of tuning! Thank you all so much for the help, and I hope this helps the next guy as well.
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Post by bolts on May 1, 2014 11:42:40 GMT -6
Sweet, I have a new one coming, good to get positive feedback on the fast fix, rather than the top end rebuild. I really didn't want to do that...
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Post by bolts on May 1, 2014 10:00:17 GMT -6
Good to know, what if I put on an 8 pole magneto as well
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Post by bolts on May 1, 2014 8:58:49 GMT -6
Also I was thinking of swapping the stator with one from another of my scooters, but it is a six pole, and all the other ones that I have are 8s, would there be any problems with using the 8 rather than the 6, or is it one of those "as long as the connections are the same" kind of deals
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Post by bolts on May 1, 2014 8:31:24 GMT -6
I haven't checked compression yet, I was thinking maybe rings or possibly a hairline crack somewhere (riding a scooter on the freeway isn't the best thing for these little guys, that's how I blew my first engine). I was planning on checking compression today. The other thought that I had was the stator on the right side. Thought came to me after talking about making sure that it really was TDC and checking to make sure the woodruff key is still in good condition (it is perfect). I started playing with that and noticed that the green wire coming up from the pickup coil looks like it has been stretched really thin. I am thinking that it might be the problem. As things heat up if the wire is broken, it might be pulling away, and then loses continuity and dies that way. Thoughts?
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