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Post by 190mech on Nov 1, 2014 20:09:50 GMT -5
Right on 19mm ID stinger,,
What about this CDI box?
ATV-Go-Kart-Scooter-Moped-Quad/221584683931?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3D62412b19364b4efcbfbf47cbe2171369%26pid%3D100005%26prg%3D20131003132420%26rk%3D2%26rkt%3D6%26sd%3D271553507010&rt=nc
I read the 4 poke CDI's work well on a 2T...
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Post by niz76 on Nov 1, 2014 22:23:04 GMT -5
I read the 4 poke CDI's work well on a 2T... Really? If that's the case then there's a ton of 4t DC CDI's available (cheap too)... hmmm |
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Post by Sitticuss on Nov 1, 2014 23:51:47 GMT -5
I have a dc cdi from an old venus clone around somewhere
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Post by niz76 on Nov 1, 2014 23:57:37 GMT -5
Thanks fellas but I've already started putting it back to stock 49cc... I'll look for a small lightweight scoot to use the BBK and pipe on...
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Post by jhobe6678 on Nov 2, 2014 7:48:20 GMT -5
Thanks fellas but I've already started putting it back to stock 49cc... I'll look for a small lightweight scoot to use the BBK and pipe on... Aww damn dude. If the 4t CDI's would work, between Sitticuss and myself I'm sure one of us could have sent you one.  |
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Post by niz76 on Nov 4, 2014 17:39:56 GMT -5
Hi all! My sisters are down visiting from Michigan and ooohing and aaaahing over their newest little neice so I haven't had much time to update. Here's what I've done: I took the BBK and pipe off and put on a stock 49cc cylinder and exhaust from an Adly Noble parts scoot.   I put the exhaust in the vise and went to town with a wire wheel then painted it with high heat black paint. I've been wanting to do white rims on a scoot so I did it here and it looks great!  We've been riding the scoot around the neighborhood and I've noticed something about these DC CDI's; with this crappy battery that's shot it's really hard to start the scoot. I'm guessing the spark is weak?? The battery is literally too weak to even make the instrument panel light up. When I hook a battery charger up to the scoot it starts on first kick! So, I had to spend $38 on a brand new battery. I also realized that putting the scoot back to stock 49cc just isn't enough to conquer this restricted CDI short of putting in heavy roller weights and killing take-off. Oh how I love PartsforScooters! I ordered a new CDI yesterday (Tues) at 2pm and it arrived today! (Wed.) Next Day delivery! I'm taking 190mech's suggestion that 4t CDI should work (I'm assuming because of the 4t's "wasted spark?"). I ordered a 4t GY6 'Racing CDI' for $24. I haven't installed it. Crossing my fingers and hope it works!  |
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Post by 2TDave on Nov 4, 2014 17:53:33 GMT -5
Looks good bro!
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Post by niz76 on Nov 4, 2014 21:48:23 GMT -5
Fried the CDI by hooking it up wrong. I found wiring diagrams for the Beamer and the GY6 DC CDI and cross-referenced the two... Had to change the location of almost every wire but it's really actually quite simple to hook up. Couldn't get spark after figuring out the wiring so I must've fried it. I ordered another one.
The good news is the stock CDI still works fine and the scoot fires right up with E-start now with the new battery.
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Post by niz76 on Nov 4, 2014 22:00:50 GMT -5
Here's a somewhat crude drawing I made but hopefully it can help someone in the future...
I deleted this pic because the GY6 (4t) CDI's timing is too far advanced to work above idle.
You can see how I fried the CDI by just plugging it in and trying it without researching what went to what first...
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Post by moofus02 on Nov 4, 2014 23:27:49 GMT -5
Wow plugged in but every wire was in the wrong location
Sent from my SPH-L720 using proboards
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Post by jhobe6678 on Nov 5, 2014 5:27:19 GMT -5
That sucks. |
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Post by niz76 on Nov 6, 2014 15:55:35 GMT -5
Round two on the GY6 DC Performance CDI. I got the second CDI in the mail today and hooked it up- correctly this time haha. Well I thought I was sunk for sure as I just couldn't get any spark from this thing. I few google minutes later and I found a diagram that shows the black (kill switch) wire as 'empty' so I unhooked the black wires and lo-and-behold we have spark! Unfortunately I think this means that the first CDI probably wasn't fried after all haha. Of course I can't just set the 'bad' CDI to the side and call it done. I had to get the cutting wheel out and cut it open to see what makes it tick lol. I totally destroyed it. It looks there's a bunch of gravel inside along with the electronics?? Quartz??  Now the scooter idles just fine but wont throttle up. I'm thinking that this performance CDI's timing could be too far advanced? Timing is an area I have yet to venture into so I guess I'll do some experimenting with advancing and retarding it to see if I can get this baby to run right... Sheesh I should've just bought the Beamer CDI with the green wire and cut it for $75 haha. I made another vid so you can hear it: Do y'all think I'm on the right track thinking it's the timing? |
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Post by niz76 on Nov 6, 2014 17:51:17 GMT -5
Well I guess my little experiment is a dud. I elongated the mount holes on the pickup and advanced and retarded the timing to no avail. I read somewhere that the 4t's need a lot of advancement at high RPM's and 2t's need basically none. I'm assuming the timing is way out of range at higher RPM's...
If anyone has any ideas I'm up for it.....
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Post by niz76 on Nov 6, 2014 18:16:55 GMT -5
I should probably just order the Eton unrestricted CDI for $85 and be done with it, but I want to keep experimenting with these CDI's so I ordered a Honda Dio 2 stroke DC CDI from partsforscooters... |
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Post by 90GTVert on Nov 6, 2014 19:16:47 GMT -5
Here are a couple of diagrams of the curves in some CDIs I've checked out. You'll notice quite a difference in advance. This is the 4T.  This is the 2T.  Not really sure how much different they would be if you used the same flywheel though. For example, on the 2T the same CDI could have something like a 5 degree difference because of how some 2T flywheels are setup. No idea how a 2T flywheel would be timed with a 4T flywheel/pickup. If you know someone with an inductive timing light that allows you to set the advance you can figure out where you are by marking TDC on the flywheel relative to a pointer of some sort (or even mark a fan blade and mark the shroud) and then dialing the advance in on the light till the line matches up with the pointer with the engine running. |
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