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05-16-2008, 08:59 AM | #1 |
Join Date: Apr 2008
Posts: 103
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Possible Solution to AMR CDI Starter/Idle Problem
Here is the potential solution that I see to the AMR Stage 3 starting and idling problem. The timing curve on the CDI is too far advanced and is causing the engine to kick back on startup and not idle correctly.
The way I understand it the engine has a Hall sensor that establishes the advance/retard of the timing (I am not sure what our Lifans look like but from what I know of Japanese bikes this is how they work). What I suggest then is to find the Hall sensor, and move it a few degrees in order to retard the overall bike timing. The CDI curve will remain just as aggressive, however overall the timing will be retarded a few degrees. This should remove the kickback (which is what causes that funny noise in the starter because it kicked back on me yesterday while kick starting). upon startup and allow the bike to idle much better. The kick back didn't blow my knee apart it was just noticeable which suggests that the timing is only off by a couple of degrees on startup. Zapkin this is what I suggest as a possible solution as per your other post. Anyone think I am crazy? or that it might work? |
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05-16-2008, 09:44 AM | #2 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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I was gonna post that idea a few days ago but decided not to but yeah ithink it would make it just about right.
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05-16-2008, 11:26 AM | #3 | |
Join Date: Apr 2008
Posts: 103
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Quote:
GH |
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05-16-2008, 11:46 AM | #4 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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Yep I have one installed and I dont think it would take all that long to do, not any longer than trying to advance the timing in that way.
I myself didnt notice much of an difference in mine overall though and I will most likely take the AMR S-3 off my bike and try it on my chinablaster project. |
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05-16-2008, 01:52 PM | #5 | |
Join Date: May 2008
Posts: 527
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Re: Possible Solution to AMR CDI Starter/Idle Problem
Quote:
as your engine turns a signal is picked up by the sensor and sends a signal to the cdi. on some other engines I have seen, it is mounted with two bolts and you need to drill and tap new holes for them to mount to. As for how many deegrees off set to drill the holes I have no clue. Not much info on this, but I hope it helps.
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ALONZO 2007 Lifan a.k.a lucy lu. 2,000 miles of good riding. |
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05-16-2008, 02:16 PM | #6 |
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thanks for the idea but i have a sneaky feeling that I'd be hesitant to try it because of my limited experience with the inside of engines. but if it were a fairly simple procedure and accompanied by photos I might get brave.
I took the AMR thing off my bike. Its now a spare in case my CDI kicks the bucket and I need a quickfix. |
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05-16-2008, 02:29 PM | #7 |
Join Date: Nov 2007
Location: N.E. Saskatchewan, Canada
Posts: 679
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Is it not counter productive to add a cdi with an advanced curve, then mechanically retard the timing???
Just a question...not rude. 8)
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'91 Yamaha Warrior- stage 2 '83 Honda ATC 70 '08 Yongjiang 125cc mx (Loncin) '08 Yongjiang 150cc atv (Jinlong) |
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05-16-2008, 02:30 PM | #8 |
Join Date: Apr 2008
Posts: 103
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One of these days here I may give it a try. If the weather is nice and I have a least a couple of hours of daylight.
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05-16-2008, 02:48 PM | #9 | |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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Quote:
If the AF-CDI advanced the timing 10 degrees but it ends up just a bit to advanced and an advancement of 7 degrees is right on you would still get the benefits timing advance and performance of the CDI but minimizing the possible damage. |
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05-16-2008, 03:34 PM | #10 |
Join Date: Apr 2008
Posts: 103
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My thoughts exactly. Are there any actually parts diagrams available that would show what the inside looks like?
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05-16-2008, 06:33 PM | #11 | |
Join Date: Dec 2007
Location: New Zealand
Posts: 196
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05-16-2008, 06:45 PM | #12 | ||
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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Quote:
I understand it glenski 100% and it does make sense but I think I'll try fine tuning my bike before tuning down the CDI. I tend to think that the stage 2 may be the better option but I'm kind of stuck with the stage 3 for now. |
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05-16-2008, 06:58 PM | #13 | |
Re: Possible Solution to AMR CDI Starter/Idle Problem
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I was reading up on the aftermarket CDI's on the Lifan's. It looks like they went from no one using them just a few weeks back to all the sudden everyone has one or is buying/talking about them. Who set the trend or let the cat out of the bag on this little performance jewel anyway?
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"C is for cookie, it's good enough for me; oh cookie cookie cookie starts with C." |
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05-16-2008, 07:03 PM | #14 | |||
Join Date: Dec 2007
Location: New Zealand
Posts: 196
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Quote:
Yes you could MAKE your stage 3 work but this would be better achieved by just purchasing a Stage 2 CDI! |
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05-16-2008, 07:06 PM | #15 | ||
Join Date: Dec 2007
Location: New Zealand
Posts: 196
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Re: Possible Solution to AMR CDI Starter/Idle Problem
Quote:
http://www.chinariders.net/modules.p...ewtopic&t=4403 |
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