http://autos.groups.yahoo.com/group/DIY-CDI/ do-it-yourself DC CDI Wed, 06 Jan 2010 04:52:45 GMT four_n_five http://autos.groups.yahoo.com/group/DIY-CDI/message/446 http://autos.groups.yahoo.com/group/DIY-CDI/message/446 I finally got all the holes grilled in the pcb. I stacked the boards and drilled all the holes .040" cause I had alot of those drills (in case of breakage), Tue, 15 Dec 2009 13:15:29 GMT John Bosson http://autos.groups.yahoo.com/group/DIY-CDI/message/444 http://autos.groups.yahoo.com/group/DIY-CDI/message/444 hi use one pickup with two tabs and a coil from a Yamaha RD / RZ 250 / 350 or something similiar (twin 2-stroke) ... From: Waldemar To: DIY-CDI@yahoogroups.com Tue, 15 Dec 2009 12:04:56 GMT Waldemar http://autos.groups.yahoo.com/group/DIY-CDI/message/443 http://autos.groups.yahoo.com/group/DIY-CDI/message/443 so, in case: - input pulse signals can be connected as ONE INPUT WIRE to the CDI? - is it possible to use one CDI connected to both coils parallely as output? Tue, 15 Dec 2009 11:39:36 GMT John Bosson http://autos.groups.yahoo.com/group/DIY-CDI/message/442 http://autos.groups.yahoo.com/group/DIY-CDI/message/442 your best bet is to adapt an ignitor system from a later model - you don't need a cdi for 500 4-stroke twin if you did want to use the cdi - run wasted spark Tue, 15 Dec 2009 11:34:13 GMT Waldemar http://autos.groups.yahoo.com/group/DIY-CDI/message/441 http://autos.groups.yahoo.com/group/DIY-CDI/message/441 Hi all CDI experts! Have you got any schemas or ideas for CDI with timing programming (eg. based on PIC chip) for V2 4 stroke engine with two ignition coils? Tue, 15 Dec 2009 03:24:37 GMT Adrianus Indratjahja http://autos.groups.yahoo.com/group/DIY-CDI/message/440 http://autos.groups.yahoo.com/group/DIY-CDI/message/440 I believe the current flowing through the C3 is very small, but if you are going to user selector switch, I think make sure the switch you will use has good Wed, 09 Dec 2009 04:04:43 GMT four_n_five http://autos.groups.yahoo.com/group/DIY-CDI/message/439 http://autos.groups.yahoo.com/group/DIY-CDI/message/439 Anyone know how much voltage/ amperage is going thru cap C3? I want to be able to switch between all 3 cap values using a rotary, or 3 position slide switch Wed, 09 Dec 2009 03:54:05 GMT four_n_five http://autos.groups.yahoo.com/group/DIY-CDI/message/438 http://autos.groups.yahoo.com/group/DIY-CDI/message/438 Picked up my pcb's this morning. They used 2 oz. copper, which I hope is enough, (maybe overkill?) but I never read anywhere the SC text what weight copper to Tue, 08 Dec 2009 04:59:12 GMT four_n_five http://autos.groups.yahoo.com/group/DIY-CDI/message/437 http://autos.groups.yahoo.com/group/DIY-CDI/message/437 ... I don't even want to add up the cost of everything I've bought to make this CDI, but when I get done, I'll post it with all of the part numbers and prices. Thu, 26 Nov 2009 10:30:01 GMT Horst Koschuta http://autos.groups.yahoo.com/group/DIY-CDI/message/436 http://autos.groups.yahoo.com/group/DIY-CDI/message/436 ... Hello four_n_five, have you checked http://www.molla.org/DIY-CDI/BOM/BOM.htm There is a collection of used parts (a way of cross reference list) to Thu, 26 Nov 2009 08:50:37 GMT rotter666 http://autos.groups.yahoo.com/group/DIY-CDI/message/435 http://autos.groups.yahoo.com/group/DIY-CDI/message/435 I forgot, the size of the neosid core is OD: 14.8mm ID: 8mm Height: 6.35mm. Just try to find something that fits on the pcb. Thu, 26 Nov 2009 08:47:02 GMT rotter666 http://autos.groups.yahoo.com/group/DIY-CDI/message/434 http://autos.groups.yahoo.com/group/DIY-CDI/message/434 Hi, as i understand it from the article, inductor L1 is only there to filter the switching noise, that means that the circuit would work even withouut it. for Wed, 25 Nov 2009 19:23:09 GMT four_n_five http://autos.groups.yahoo.com/group/DIY-CDI/message/433 http://autos.groups.yahoo.com/group/DIY-CDI/message/433 Glad to find this group as I am not an electronics person, but I am fascinated with the idea of building the SC multi spark cdi. I started collecting parts Thu, 19 Nov 2009 10:34:39 GMT Baumann, Friedrich http://autos.groups.yahoo.com/group/DIY-CDI/message/432 http://autos.groups.yahoo.com/group/DIY-CDI/message/432 hi CDI folks: there were recent complaints about transistors failures of the MTP3055 and the IRF822 which could not yet be understood. for failing the MTP3055 Wed, 18 Nov 2009 22:50:29 GMT rotter666 http://autos.groups.yahoo.com/group/DIY-CDI/message/431 http://autos.groups.yahoo.com/group/DIY-CDI/message/431 Hello Horst, thank you for your input. ... Good to know, then Multispark is only good for not so optimal engines. Regarding other fuels i intend to try E85 and