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VMX247
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« Reply #15 on: April 18, 2009, 11:11:11 PM » |
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today's progress in the shed and I played with the camera .  9.08pm and ready to kick over/oopps just heard the shed door slide,so maybe tomorrow.   |
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« Last Edit: March 18, 2010, 02:16:16 PM by VMX247 »
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Oggy Doggy
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« Reply #16 on: April 18, 2009, 11:54:13 PM » |
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It won't be starting in a hurry without a carby Alison!
Has anybody adapted a Chinese pitbike CDI to a British single? I just bought two Chinese CDIs after seeing a number of people using them at the Barry Sheen meeting at EaCk. I'm negotiating a B44 Rickman head engine for my upcoming Greeves and I'd like to check out anybodys conversions. I've also got an XL 250 that I may turn into a lo buck vinduro mount. I dig the idea of using the Chonda ignition as the road race blokes love them.
Sorry to turn left on the thread.
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« Last Edit: April 18, 2009, 11:57:52 PM by Oggy Doggy »
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VMX247
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« Reply #17 on: April 19, 2009, 12:09:07 AM » |
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oh shi..... no carby  .............. (tomorrow-on any sunday  ) turn left as much as ya like  Steven & Alison |
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vmxrider
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« Reply #18 on: May 09, 2009, 07:58:10 PM » |
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How did the cdi go, did it work? I have an XL250 project that could use one of these. I see them on ebay for around $65 almost cheap enough to take the chance. Are there any links to this mod with the classic road race guys?
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VMX247
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« Reply #19 on: May 09, 2009, 08:56:16 PM » |
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The project is still going on. Unfortunatelly I giggered a wire on the pulse coil and had to buy another coil. (complete unit) ((glad they are not modern bike prices)) Got that on Friday and fitted to stator plate today. Have been having no end of trouble getting spark today. Will look again at what I have done tomorrow. One of the other guys in VMXWA fitted one at the same time as mine. He kept the plate configuration as supplied and made stand offs to set the stator plate back. Mines the reverse. Plate mounted on cover. He said it was good but noticed distinct steps in the CDI curve. Probably easy fixed for another $50 with the race CDI. The other WA guy that has his working got the bits via the following link http://cgi.ebay.com.au/RACING-INNER-ROTOR-KIT-FLYWHEEL-CDI-CRF50-XR50-LIFAN_W0QQitemZ160333513293QQcmdZViewItemQQptZAU_Motorcycle_Parts_Accessories?hash=item25549f424d&_trksid=p4634.c0.m14.l1262&_trkparms=%7C301%3A0%7C293%3A1%7C294%3A30 (If that makes sense.) He brought 2 for what I paid for one. Anyway Ill let you know on tomorrows outcome if I can get back down the shed. Cheers Steven |
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albrid-3
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« Reply #20 on: May 09, 2009, 10:32:28 PM » |
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that xl 350 number #50, what frame is the engine in. david
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VMX247
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« Reply #21 on: May 09, 2009, 10:45:22 PM » |
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that xl 350 number #50, what frame is the engine in. david
standard XL frame no mods. and of course no Maico frame yet cheers S&A |
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VMX247
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« Reply #22 on: May 14, 2009, 08:03:45 PM » |
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Will look again at what I have done tomorrow. still no spark, doing my scone in over this one.  maybe too much gap between the rotor and pole faces-  will move closer today |
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« Last Edit: May 16, 2009, 09:42:25 AM by VMX247 »
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VMX247
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« Reply #23 on: May 16, 2009, 09:55:40 AM » |
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found another photo
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crossedup2
C-Grade
Posts: 123
Never enough shed time because of Kids.....
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« Reply #24 on: May 23, 2009, 11:32:59 PM » |
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This is just a thought 247 but with the stator coil, is it still the same way around on the mounting plate as it arrived? My logic is that the cdi's usually pick up of the pulse running one way, (say North South) generating a + direction pulse (sine wave). If you have turned the plate around but are running the rotor in the supplied direction (South North) you may be generating a - pulse ( sine wave), then those little diode thingise will not allow the pulse to trigger.
Try turning the stator coil over on the mounting plate, if it will fit.
It may be worth a try and should cost nothing.
I like the handy work of your mounting system. I like blending old stuff with new and you look like you've done a great job.
Good luck
PB
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Anything Yamaha. AT1, CT1 (X3), RT1, YZ125X, YZ250E, YZ400D, IT175E, IT250H, IT490K . Always looking for Pre 78 Yamaha stuff....
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VMX247
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« Reply #25 on: May 24, 2009, 12:22:28 AM » |
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The coils are orientated as they were if the stator plate was set back as normal. So the poles are right. What I discovered was the air gap required is absolutly naff all. By mounting the plate as I did it was quit difficult to get the gap right between the coils and rotor. To make it worse the rotor diameter was'nt very true. We have modified the backing plate a bit by machining out the area near the pulse coil and slotting the mounting holes so that i can get some adjustment and see whats going on. Works ok so far. true test will be race day.
The next version I will keep the stator and coils as normal, machine out the centre of the stator plate then make standoffs to set the stator plate back off of the ignition cover. Doing it that way makes it heaps easier to adjust the air gap between the coils and the rotor and ultimately ends up less machining to do.
Cheers
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albrid-3
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« Reply #26 on: May 25, 2009, 08:21:24 AM » |
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Hi Jim, so your looking for a maico frame to put the engine in.
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« Last Edit: May 25, 2009, 07:24:55 PM by albrid-3 »
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VMX247
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« Reply #27 on: June 29, 2009, 09:24:08 PM » |
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« Last Edit: July 02, 2009, 08:59:32 AM by VMX247 »
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Tossa
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« Reply #28 on: June 30, 2009, 05:35:44 PM » |
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1983 Honda CR125 (mosquito brigade)
1974 Yamaha 360A
1973 Rickman Zundapp Metisse, to rebuild
1981 Suzuki RM250X to rebuild
1974 Husqvarna MAG CR250
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VMX247
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« Reply #29 on: June 30, 2009, 09:01:13 PM » |
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funny haha Tossa
Alison
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