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Post by birdman on Aug 9, 2015 11:09:03 GMT -5
welcome to the boards.. THE... Boards lol
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Post by mikes50cc on Aug 9, 2015 12:22:39 GMT -5
Thanks for the sites for all the pairts!! Right now I need to get it started. The electric start works but the battery is shot. Tried charging it with a jump box to no luck. I think the first thing is to see if it runs. Pretty sure it will need a carb. If it doesn't have compression I may kit the 60cc kit avaliable but that's a pipe bream at the moment. What makes this kinda stuck around 30mph the clutch setup?
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Post by 90GTVert on Aug 9, 2015 12:33:30 GMT -5
The transmission. Single speed. The CVT setups can keep in the powerband for a wider range of speed. Your chain drive is sorta like if you just drove your car around in 1st gear all the time.
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Post by Fox on Aug 9, 2015 12:41:49 GMT -5
You have a kick start lever right? You can use a car battery/jumper cables to start it. You don't need to start the car. I usually hook the red to the plus lead on the scooter and the black I clamp to the exhaust pipe for s good solid engine ground. Does it have a thumb lever for the enricher? A taller tire might help you go a bit faster. In case you haven't yet seen it, here's what it looks like under the cover(s).    |
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Post by mikes50cc on Aug 9, 2015 13:03:43 GMT -5
Ok so I don't have to mix the gas and just fill the rear case with oil?
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Post by mikes50cc on Aug 9, 2015 13:12:57 GMT -5
The kick start is broken unfortionatly.
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Post by Fox on Aug 9, 2015 13:15:48 GMT -5
No, The oil in the case is for the chain drive. 30wt motor oil will do for that. The .pdf manual link Brent posted talks about changing the oil in there. Here it is again. www.49ccscoot.com/manuals/1E41QMB_Chain_Drive_2T_Manual.pdfThere should be a small-ish white plastic tank for the 2 stroke oil with a hose running to the oil pump. If no oil tank then you will have to pre-mix. If you haven't stripped off all the plastic body then you might as well do it. |
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Post by Florida Antique on Aug 9, 2015 13:34:49 GMT -5
You only fill the gear case until oil runs out the oil level hole (take out the screw in the center of the cover, that's the oil level hole) and Dave is right, its to lube the chain only. If you fill it all the way it will only do 20mph like mine did when I got it. Because of the single speed, it is a compromise between top speed and acceleration. Like all compromises, it ends up doing neither. You could change gears and get it to go 40 but you would probably have someone tow you to 10 mph just to get you going. My son weighs 190 and from a standing stop he could not climb the ramp in his apartment's parking garage with it. He had to push it up the ramp. If he had a running start, it would almost make it to the top. I think they designed these for someone who is about half his weight. They would probably be happy with one of these bikes.
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Post by mikes50cc on Aug 9, 2015 14:12:19 GMT -5
Hmm. So for the most part it seems pretty useless to get around with. Would a BBK Benifit at all? Also I see that it has a separate or actual head. Could you cut the head and raise compression?
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Post by paulmohr on Aug 9, 2015 14:15:48 GMT -5
Wow fox, you rock for the photos! I was trying to find out what kind of drive this thing had but couldn't find anything. All I could do was guess, and I guessed wrong. I was figuring it just had a chain with a sprocket on the rear tire like a regular motorcycle or bike. As it turns out it actually has a gear reduction system. So if you are wanting to go 40mph on this thing you have 5 options. 4 of these options require you to somehow make the rear tire spin faster. These figures are based on your set up being a 13.5 final drive, 10 inch rear tire and doing around 30 mile an hour at 8200 rpm. I am really just guessing since I know nothing about this scooter. But this is sort of average for a scooter. And it doesn't need to be perfect since I am just showing comparisons with ball park figures. So: 1) You can make the engine turn more rpms. To reach 40mph you are probably talking 10,000+ rpms. 2) Use larger rear tire. Lets assume you could find and wedge a 12 in rim and tire on the back of it. That would get you to 34mph (or 4mph over whatever your current tops speed is). 3) Change the final drive gears. However from looking at this thing I highly doubt you would be able to find performance gears for it. If you could you would need at least a 10:1 final drive ratio. The lower the number the faster your top speed would be. 4) Some combination of the three above options. Options 2,3 and 4 are also going to depend on if your engine has enough HP to actually drive the set up. If you raise the gearing on a vehicle it will require more power to get it there and keep it there. This means that your acceleration to top speed will be slower. Or possibly the engine won't have what it takes to actually reach top speed and it will just bog down and you will still only do around 30mph. The difference being now it will take longer to get there. Nothing comes for free, especially in a single speed drive system. Option number 5, get a whole bunch of insurance on it and hope someone steals it.  Oh, a sixth option, Put a jet pack on it. That is kind of a pricy option though, but damn it would look cool. |
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Post by mikes50cc on Aug 9, 2015 14:26:00 GMT -5
I don't think there's any room for a lager tire...figures..guess I have my work cut out for me.
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Post by Fox on Aug 9, 2015 15:44:57 GMT -5
The best option is to do what Brent mentioned and just get it running in stock form and try to sell it for a profit and put that money toward a scoot with a belt drive that can be upgraded
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Post by 90GTVert on Aug 9, 2015 18:36:48 GMT -5
paulmohr : All valid points... but there's an issue and this is why I suggested to try and go for a CVT driven scoot if you want something that goes 40MPH. The exception would be if you really don't care how long it takes to get there. Even if he puts on the big bore, it's roughly 60cc. Get the compression and squish just right and maybe play with the ports a little (not trying to change durations I'd guess... though I really don't know how these are setup stock). Maybe the ignition can be modified to squeeze out some advance? You'll get a little power. Not a lot. So those things should be able to increase overall output, without making it peaky or needing to rev much different than it did before. The problem is, I'm gonna guess that may get you up to 5MPH. Be warned, I'm making a lot of guesses since I haven't owned one. A friend had one years ago and I paid little attention to it other than knowing it could go 25-30MPH. You're only dealing with a 50-60cc engine... 3-4 cubic inches for the domestic auto crowd. A relatively low revving one at that (compared to other scooter and motorcycle engines at least). I'm not sure, but I'd throw a guess out that it prob peaks by 8500RPM. You need to significantly increase displacement (and/or volumetric efficiency) and/or RPM if you want much more power. Everyone else has a 2T that revs to 10,000RPM or above though, right? So what's the big deal? The big deal is that the high rev stuff is all dead at low RPMs. Their CVT transmissions allow those dead spots to be bypassed. With the single speed, you have to deal with the low revs. Either that or figure out a way to make the clutch engage really late, but I still don't think it would be nearly as effective as a CVT or other gearbox. When you get into the real high rev race stuff they can be a pain to work with even with the benefit of a CVT. They may have nothing in them at all below say 8,000RPM and then suddenly come to life. If they fall out of the powerband they may be a stumbling sputtering sluggish mess nto capable of more than a few MPH in some cases. Some of these things make over 20HP at 70cc, but if you managed to fit that to a chain drive, at least without extensive effort, it would probably seem like the biggest turd you've ever rode. Grampa may speed by you, tooting the meager horn on his power chair. A mild build could probably leave you with a chain drive scoot that topped out at somewhere near 40, getting there slower than stock or maybe about the same if you really get it all right. I'm sure with enough effort you could turn it into a 40MPH scoot. You could probably go well beyond that if you're really skilled and motivated. My argument is that you had better truly understand that there are much easier (and cheaper) ways as you laugh in the face of the challenge if you wish to hot rod one of these engines. You should be the type of person that enjoys building things and has lots of patience. Otherwise you are likely to regret the decision. I'm all for it if someone wishes to tackle this task, I love custom builds and ingenuity, just know what you're getting into. One more time, lots of guessing here. My main experience with these is based on complaints from others over the 10 or so years I've been on scooter forums way too regularly and some basic knowledge and experience with other 2T builds.
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Post by Deleted on Aug 9, 2015 18:50:00 GMT -5
I just thought of something. What if he does take Brent's advice and gets it going enough to sell so he can get a GY6 and then.....
...a few weeks later, the fellow that bought it from him joins this forum and asks....
"Hey, I just bought this scooter, anyone know anything about it? How can I make it go 40 mph?"
Then, this new guy gets the same advice and sells it....and....
Well...you know.
Just a thought.
Bill
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Post by Fox on Aug 9, 2015 20:12:26 GMT -5
I just thought of something. What if he does take Brent's advice and gets it going enough to sell so he can get a GY6 and then..... ...a few weeks later, the fellow that bought it from him joins this forum and asks.... "Hey, I just bought this scooter, anyone know anything about it? How can I make it go 40 mph?" Then, this new guy gets the same advice and sells it....and.... Well...you know. Just a thought. Bill LOL! That's funny. I would tell him the same thing. I ran a shop for a while and have personally seen/worked on/ridden 4 scooters with this type of engine in the past one of which was very recently and they were/are all dogs with no guts and very minimal torque. I too like Brent have been reading scooter forums for 10 years now and have never seen a build thread with a !E41QMB as the base engine because there is no up-gear kits available as far as I know and I have looked for them and the only BBK is a 60cc which is not a big leap so you are still stuck at 30 mph, you just might get there a bit faster with the BBK but the red-line is gonna be the same pretty much so not worth the time and effort. |
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