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Post by ronnoc923 on Aug 29, 2013 0:54:21 GMT -5
I was just wondering if while I was tuning up a bike and fixing it up and everything that if I didn't tighten the seals completely tight would it mess up the air to gas mixture to much to where it would cause a problem as in wont start or get enough power?
As for example I am always taking off the carb when working on one of my bikes and when I put it back onto the cylinder I dont tighten the connection from the carb to the cylinder, Could that be what would mess up a air to gas ratio?
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Post by ronnoc923 on Aug 25, 2013 23:31:57 GMT -5
Sounds like I have a busy day tomorrow... Now for the clutch pulley I am not able to take it apart. After getting the big spring off and I have to unscrew the one clamp that covers the slider on the inside, I am not able to unscrew the clamp piece I put a decent amount of pressure into it and I got a blow torch and made it extremely hot so I could try to expand the metal and remove the piece but it still didn't budge. What would you recommend that I do to remove this piece? Maybe try getting it a little bit hotter with the torch and keep trying or soak it in some kind of solution.
And what would be a good way to clock the rings because whenever I put them into the right places they always want to move around when I am trying to put it back in the cylinder.
I will also buy a woodruff key and new crankshaft seal and see what happens.
And on a side note yes my tire pressure is good.... D8
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Post by ronnoc923 on Aug 25, 2013 22:16:12 GMT -5
[replyingto=tvnacman]tvnacman[/replyingto]Im thinking it might be the crankshaft seal because it looks really dry and brittle. What type of oil should I use to replace it with? Well I thought it was dry and brittle but I guess I was thinking of something else but I thought there was a rubber cover on top of it or something but its not there anymore just looks like a kind of like metal piece...
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Post by ronnoc923 on Aug 25, 2013 8:18:54 GMT -5
Its not the breaks because as it shows in the video when it is on the centerstand the wheel moves finely. Even with no throttle and a little bit of highly adjusted idle and the wheel moves. Ill put the engine covers back on and see if it fix's the overheating issue. But as I said from before there is no smoke anymore after running it a couple of times I suppose it was just from excess oil on top of the piston when I first put it together and used lubricating oil.
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Post by ronnoc923 on Aug 24, 2013 23:39:47 GMT -5
Ok for future notice lets just rule out the smoking issue because that was from the lubrication that was being burnt off. As I stated from before......
I put new engine oil in there fully synthetic and there is NO smoke, only time when smoke comes out is when I take the carb cleaner and spray around the engine where there is a air leak and when the carb cleaner gets into the engine and burns out there is white smoke.
For the overheating issue I am guessing my variator fan is messed up because before it ended up melting a little bit and some of the top got shredded a bit but not to bad. I heard that the variator fan REALLY makes a difference when you have heat inside of your CVT, correct me if I am wrong though...
But lets try to focus on my speed issue though, since I am not going above 15 mph what do you think could be my issue? That im not getting enough gas to air ratio and my air ratio is to high? or maybe my transmission gear is messed up and need a new one?
I dont know why many people are not really willing to help much even when I am offering a cash prize for the person that helps me figure out the issue...
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Post by ronnoc923 on Aug 24, 2013 22:49:30 GMT -5
I was talking to my uncle who works on restaurant equipment and he says that it might be the gears inside of the transmission area. Would that cause it to move slowly like in the 10 to 15 mph? Because my engine rev's pretty high and seems good from what he says.
What do you think?
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Post by ronnoc923 on Aug 24, 2013 20:54:10 GMT -5
I still have the fan covers I just put them to the side to put the new piston on. I got some carb cleaner and sprayed around some corners and saw there was a change in rpm's so ill try to seal those up and test it again plus ill adjust the valves and see what happens.
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Post by ronnoc923 on Aug 24, 2013 16:42:24 GMT -5
Ok I adjusted the cam chain tightener and now it starts up pretty easily. Although I am still getting a overheating issue... Im going to adjust my valves in a bit and get some carburetor cleaner to see if I have any air leaks just encase if im getting a bad air to gas ratio.
Now my variator fan is made of plastic and is a little scrapped up also it is pretty dirty inside of the CVT case. Im not sure if that would cause overheating or anything. I heard that the shaft that holds the variator has a rubber ring on it that holds the oil inside and if it goes bad it starts to leak, im not sure if the oil used in that is regular engine oil or if its a special type because the rubber ring looks pretty dry. Im going to go ahead and buy a fresh batch of oil just encase.
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Post by ronnoc923 on Aug 24, 2013 13:39:28 GMT -5
Here is a video. I got it put back together and it starts up I think I might need a new battery because im not getting enough juice ill probably make another video trying to start her up but it goes about 10-15 mph still but when on the center stand seems like it might be going a lot faster.
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Post by ronnoc923 on Aug 24, 2013 0:13:32 GMT -5
Now for the lawnmower sound I am not sure if it is the gasket because when I took off the muffler and started it up the bike sounded normal just a little bit louder then after 10 sec's something sounded like it popped and it started making that noise. When I first got the bike and before the belt broke for the first time I could drive it for 30 mins or even a hour at WOT and the CVT area wouldn't be to hot just a little warm, the way it is now though seems about close to the 200F. I believe though that the heat was coming from the old piston because there were scorch marks along side of the piston so that means that the rings must have been going bad so the heat was passing through the engine which is right next to the CVT area.
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Post by ronnoc923 on Aug 24, 2013 0:08:47 GMT -5
Once it started over heating everything that I replaced didn't fix my issue. I do not believe that the Cam Chain is bad because when I attach it the the Cam and tighten it a little bit it seems like its nice and snug. Now also when I got the new piston on there after running it for about 20 secs then turn it off I see a decent amount of white smoke come out of the engine area, I believe that might be the lubricant oil I have on there just burning off. At this moment though I am not able to take it for a small test drive to see if there is a overheating issue still because I cant get it above 10 mph and it wants to stall out to much plus after running it WOT for about 30 sec's it just cut out and the white smoke poured out a bit. Im gonna try to readjust some things to see if I cant get it working.
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Post by ronnoc923 on Aug 23, 2013 23:04:06 GMT -5
At this point I really need help getting this bike fixed. So I am offering the first person to help me figure out what is wrong with my bike $50 via Paypal. I am true to my word and kind of foolish with my money I will most definitely pay you the money if you do figure out my problem though. So this is what I got. A 50cc Taotao about 1 year old with somewhere around 6k miles. My problem first started about 3 months ago, I was driving home and my belt broke off. After that when I got a new belt I noticed that I was having over heating issues, so I went into my CVT and had replaced the Clutch, clutch springs, torque springs, Variator and roller weights all with performance quality gear. After that I was still having over heating issues, so I changed my gear oil and after that I noticed that the heat was not coming from that area, I have fully synthetic oil already. When I had my second belt my bike was still going pretty decent but around 35 mph instead of 40-45 mph, over heating would still continue and after a while it seemed like the belt was slipping or something, I then found that it was my clutch pulley and it needed to be lubricated so when I did that my bike seemed fine and was getting about 40-45 again almost about 50 mph, overheating would still continue and after about 2 short rides the lubricant was burned off and needed more. Then my kevlar belt broke, and when that happened my bike went to , when I got a new bando belt made of aramid cord, I hopped on and my top speed was about 10 mph and after a 2 min drive down the street and back my bike was already over heated in my CVT. I then went to explore further so I opened up my piston and saw there was scorch marks along side the piston so I figured that I needed a new piston. Also before I checked the piston I thought that maybe there was something clogged in the muffler so I took it off and tried running it and when I did I blew something I think and now it sounds like a lawnmower. So I bought a new 47mm big bore kit, put it all together and lubricated the piston and cylinder like I saw on youtube and set the gear and that thing that has the fan on it thats connected to the engine to the right spot so the were set or something. I now have it running again but still sounds like a lawnmower and wont go above 10 mph and I say 10mph while its on the centerstand you can tell that the wheel isnt turning fast at all on WOT. I have spent over $300 in trying to fix this and still haven't gotten anywhere, so I really need help because this is my only transportation to work and back at this moment and I am waiting to get my license. Thanks for any help, Connor
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Post by ronnoc923 on Aug 23, 2013 15:06:10 GMT -5
When I said 10 mph I meant 10 miles per hour speed wise not distances. Just got the new piston in there though but it still sounds like a lawn mower and I have already had synthetic oil in there. When I put it back together with the new piston and cylinder I sprayed some lubricant oil in there and got it going. Now I was seeing how it was handling the new piston and after about 20 sec's I turned it back off and light smoke started coming off of it. Do you think thats from the lubricant burning off? or maybe something more serious inside the engine? Would you recommend I not keep running it or keep running it to maybe burn off the oil if thats what it sounds like it might be.
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Post by ronnoc923 on Aug 20, 2013 22:24:41 GMT -5
I finally decided to open up the scooter to look inside of the cylinder and noticed that my piston had scolding along the sides of the piston. So I guess that might be the reason for the over heating and loss of top speed because of compression issues but then again I dont know for 100% that it was the compression because I have not been able to test that yet since I cant find my spark plug remover... Would that make sense though or do you think that it is probably still something else that is causing the overheating? I went ahead and bought a 80cc big bore kit from scrappydogscooters so hopefully when that comes my issue should be solved.
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Post by ronnoc923 on Aug 19, 2013 22:14:51 GMT -5
Just got a blow torch and managed to get it off but broke the rings Now where would be a good place to go to, to buy a new piston and cylinder for a good price for two stroke mopeds?
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