Performance CDI for Qingqi QM200GY (Qlink XF200, STX, etc)
A cursory search for alternative performance CDI (capacitor discharge ignition) control modules reveals that the market is flooded with them. Unfortunately they're for the horizontal Honda clones used on everything from commuter bikes to ATV's, pit bikes, monkey-bikes, etc, some of the vertical 125 to 200 cc engines, and for lots of scooters.
There is power and improved running to be gained from an alternative advance curve which is programmed into the CDI's processor.
What I cannot find is an alternative unit for our bikes. The Suzuki DR units are different, at least physically (Why?), and there are no performance units for it anyway. The only bike that shares our unit appears to be the Suzuki EN125. I have done a lot of research into this, including trawling through lots of parts lists. I'm willing to be proved wrong...please!.
There must be a market for this sort of mod, Qingqis and their derivatives with the same 125/200 engines are selling like hot cakes all over the world, and yet, to my knowledge no-one has thought of this lucrative after-market item.
There's even a performance CDI available for my PGO Bugrider 250 road legal buggy and they can't have sold as many of those as the Qingqi bikes.
This is what the original factory unit looks like: Qingqi QM200GY CDI box
I have ben in touch with Gareth at Xian racing. I know he has contacts in the Far East with after-market CDI manufacturers, (they have jointly developed proven good units), and he's looking into it for me. Will let you know if the maker thinks it's a viable proposition and puts this into production. I have of course volunteered for testing, even if I have to pay for the prototype unit.
My sort of test will, of course be subjective, using the "butt dyno", but either the maker or Xian racing could arrange proper rolling road dyno tests.
It's sad that I, being an industrial electronics manufacturer have to do this. I have tried to get our Chief Engineer interested in the fascinating (?) world of magnetos, CDI's, rectifier-regulators, etc, but no dice. He's too set in his ways to change tack now. Perhaps I should fire him...:icon10:
The rest of our staff are willing, adventurous people. Just check out my Customer relations and complaints Manager.
If anyone is interested it would help to make our wishes known here, so I don't look like the only one in Christendom that wants this item.
Alternative CDI for Qingqi QM200GY (STX,
I've checked out SERVITEC web page. They make CDI units for all sorts of bikes, including the STX Sundown (Brazilian Qingqi QM200GY). This alternative unit just removes the RPM limit. Its part number is 50.147.15 . Not really what I'm looking for.
What I (We?) really want is something like this one for the Honda CBF250, also called CBX250 Twister in Brazil, part number 50.105.77 that has a choice of 3 rpm limits and 10 different ignition advance curves to try out. All these are selected by a remote control unit similar to a key fob...clever eh?.
http://www.servitecmoto.com.br/zoom/...em%20chave.jpg
This is their CDI page: http://www.servitecmoto.com.br/ignicoes.htm
This is the manual that shows the method of adjustment and the different curves:
http://www.servitecmoto.com.br/Manua...250eCBX250.pdf
The Excel file detailing the different advance curves of another CBF250 unit (part nº 50.105.84) with 24 curves !!!:
http://www.servitecmoto.com.br/Curva...o50-105-84.xls
I have sent them an email asking if they have plans to introduce such a unit in the future for our bikes.
Programmable CDI Qingqi QM200 (Qlink, STX, Sinnis, etc)
Fantastic.:clap: Thank you Luis Carlos.
Perhaps if we send them the list of alternative names the bike is sold with all over the world, they'll realise how popular this range of bikes has become.
Xian Racer is getting one developed at my request by the usual supplier of theirs in China. Gareth has informed me that it will be available for testing in about two weeks and will be sending me a unit for trials.
The problem is that this speed has been achieved by the usual Chinese method of "development". This has consisted of me sending Gareth a photo of my CDI unit, he has forwarded it to his Chinese supplier, who, in his tea break, went by the Qingqi spares depot and bought a standard factory unit.
From that he says it has developed a "Racing" version and made ten prototypes. One of them is on the way to Europe (and me!) right now.
They haven't specified what they have done to the advance curve to warrant the "racing" label though, but I suppose they know what they're doing...:rolleyes1:
The list of alternative brand names is at this thread, post number 2:
http://www.mychinamoto.com/forums/showthread.php?t=76