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Post by Jon C on May 10, 2010 17:26:32 GMT -6
Thanks Bashan, now I don't think it is the cam chain. I tightened it, and nothing changed.
This play is hard to explain, but its like the connecting rod is loose or maybe just some gears that have some play.
Or is this play normal?
The video can explain more. The clanking noise is near the rear wheel. I only used part of the variator to move the shaft. (Yes, I did get a new variator if you notice the broken blades...Don't use a screw driver when removing the nut)!
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Post by Jon C on May 10, 2010 1:46:44 GMT -6
I may have spoken too soon... I've been having trouble getting the right woodruff key. It sounded good for a while, but the rattle came back after a few miles. I ordered the right key from www.scrappydogscooters.com/ and it should get here soon....but.... I notice that when I move the crank shaft back and forth there is some play in there that makes that same rattle noise? Hmmm. Is it possible that the cam chain is too loose? Should there be any play in the crank shaft? I am going to try to adjust the cam chain tensioner and see if that play I have goes away. I didn't want to start a new thread, so hopefully someone will see my last 2 questions. I may try to get a video up of what I'm talking about. Thanks! |
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Post by Jon C on Apr 28, 2010 1:00:36 GMT -6
*Solved*
The rattling noise I was hearing was from a loose magneto rotor. When I took it off, the groove where the Woodruff key goes was all chewed up on one end. I don't have pictures now, but I'll try to get one another time.
I replaced the magneto rotor and it sounds good now. I used lock-tight on it and tightened it good. Sometimes I still hear a rattle when it is at idle, but not much.
I'm not 100% sure yet if I trust it, but I'll post again if I have trouble.
I'm just glad it wasn't internal like I thought it was. That mechanics stethoscope did help me narrow down where the noise was coming from.
Thanks for all the posts in this thread!
Jon
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Post by Jon C on Apr 26, 2010 19:12:50 GMT -6
Scrappy is in our Vendors section. He is Rick Main, a very nice guy. If you need help you can call him and discuss what parts you may or may not need, no pressure. He's also nice enough to contribute to our GY6 code thread in Tech. Rich I had no idea! Thanks Rick and Rich. |
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Post by Jon C on Apr 26, 2010 15:51:42 GMT -6
I had to order a speedometer cable too. Check this link: cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItemVersion&item=270522242666&view=all&tid=550387619017 Check to make sure they have the right one. The ebay sellers name is scrappydogscooters. I'm very pleased with my order. I ordered it Saturday around 4-5pm and it arrived today (monday) via USPS first class mail! Less than 2 days to my door. $9.00 including shipping. On the other hand, my order from Motopartsmax.com is still sitting in CA. UPS ground and it will be 8 days shipping if I'm lucky. It took them 3-4 days just to process my order. Jon |
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Post by Jon C on Apr 23, 2010 17:15:53 GMT -6
Cool video! I like the camera shots and editing.
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Post by Jon C on Apr 23, 2010 17:10:34 GMT -6
Jon, I'd like to think that our problems our different. Since, if memory serves, you drained your oil and didn't find any metal shavings. You might be lucky and just have it be in your top end! Yea, I'm hoping its not inside the motor. Right now I think it is the magneto rotor, but won't know for a while. Good luck with yours, hope it goes well. |
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Post by Jon C on Apr 23, 2010 2:27:35 GMT -6
I've been waiting to see how yours turns out (I'm the one with the engine rattle). If I have major problems with mine, I'm thinking about doing the big bore upgrade.
Lots of $ though, not sure if I want to. My 150cc is fine for what I wanted it for, but I think I want a 250 next time.
Jon
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Post by Jon C on Apr 19, 2010 15:20:58 GMT -6
Sounds a little like my scooter... right before the motor seized on me. However, when I drained my oil, I found plenty of metal shavings. A magnet helped, but even when I dumped my drain pan into my recycle bottle, it kinda felt like I was panning for gold. Plenty of metal... and I still haven't found the source. Yes, I've been following your thread. I cleaned the magneto rotor and stator, and put it back together. Sounded better, but it is still making some noise mostly at idle. The slot where the woodruff key goes is too chewed up. Just ordered a new one, so I'll have to wait a few days. Thanks. |
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Post by Jon C on Apr 19, 2010 3:12:57 GMT -6
One more thing I should note. I couldn't get the magneto cover off, so when I ran it for a buddy to listen to, the bolt was off and the cover came off on its own.
Now that I think of it, maybe that is why there are gouges in the slot came from?
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Post by Jon C on Apr 19, 2010 2:47:37 GMT -6
So, I took the rotor off and there are gouges where the key goes on the rotor. I'm thinking the key got loose and was causing the noise. What is that key called...woodruf, or something? There was also a ton of dust in there from dirt roads. I can't get pictures now because my camera is having issues, but I will get some. The key itself looks good, and same with the shaft. The first thing I'm going to do is get this part: www.motopartsmax.com/index.php/main_page/product_info/products_id/610 If anyone knows a good place to get this part, let me know. I'll look locally first. If anyone thinks it is something else, I'd love to hear all opinions. Jon |
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Post by Jon C on Apr 19, 2010 2:39:39 GMT -6
Maybe there is hope? I'm glad the last post didn't think it was a rod.
Remember, I lost no power and was running fine. Also when I drained the oil, I didn't see any obvious metal shavings. That made me wonder?
In the video I posted earlier, I mostly pointed the camera at the magneto rotor (I think its called). Because to me that is where the most noise was. Others agreed, in fact it is right above the starter.
Here is a video of me hitting the starter with the cover or rotor off...listen for the knock, clatter, or marbles...I don't hear any:
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Post by Jon C on Apr 18, 2010 17:31:11 GMT -6
Well, I was only hoping it was something easier. I was in denial. Looks like I'll be doing a rebuild.  |
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Post by Jon C on Apr 18, 2010 13:09:13 GMT -6
I'll post more later, but here is my poor scooter:
Jon
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Post by Jon C on Apr 17, 2010 21:46:02 GMT -6
Yes, that's the one. I was skeptical at first, but they work.
Some info:
I took a quick listen today, I hear the knock everywhere but it seemed loudest on the starter?? I'll take some more time and see if I can pin point the knock. I'm not a mechanic at all either, this is new to me.
Jon
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