Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Quote from: Sesman on January 12, 2022, 04:54:40 PMI could be your friend .Seriously though I’ll source two units and give it a go. Seems it will cost around £35, so might still go the Hondaman route if the group purchase comes off.Why not go one better Phil .. get something like this in the link and a build CDi like I did for my 1st 400/4 (from York BTW XDN 128R and still out there on SORN but listed as Red and it was Varnish Blue when new).It was based it on the Kwak H1 CDi but the H1 had a high voltage winding coil on the alternator so i built a 400V inverter to generate the HT instead. Something like this:- https://www.ebay.co.uk/itm/253621579134 I did over 20k miles with that CDi on it and it was still fitted when I sold it in 1980.
I could be your friend .Seriously though I’ll source two units and give it a go. Seems it will cost around £35, so might still go the Hondaman route if the group purchase comes off.
Quote from: AshimotoK0 on January 12, 2022, 07:13:10 PMQuote from: Sesman on January 12, 2022, 04:54:40 PMI could be your friend .Seriously though I’ll source two units and give it a go. Seems it will cost around £35, so might still go the Hondaman route if the group purchase comes off.Why not go one better Phil .. get something like this in the link and a build CDi like I did for my 1st 400/4 (from York BTW XDN 128R and still out there on SORN but listed as Red and it was Varnish Blue when new).It was based it on the Kwak H1 CDi but the H1 had a high voltage winding coil on the alternator so i built a 400V inverter to generate the HT instead. Something like this:- https://www.ebay.co.uk/itm/253621579134 I did over 20k miles with that CDi on it and it was still fitted when I sold it in 1980. If that one is a CDI, I don't know if I would want one. What I've heard - so, it's not from personal experience - the delivered initial ultra short Volt peak is very high, but there's practically no burn time, so if the initial peak misses for some reason, there's no reserve. CDI (thyristor) works well on some bikes like two strokes (?), on others a transistor EI is favoured. Again, this is from hearsay.
Just a quick and novice question deltarider. The kit claims to have a maximum current rating of 4A. I’m guessing the nominal current draw for the original system is circa 3 to 3.5amps with OE coils? Is that uncomfortably close or are the units generously thermally rated in your opinion?Apologies for such a basic question, but my electrical knowledge is pretty rudimentary.
Quote from: Sesman on January 12, 2022, 10:01:54 PMJust a quick and novice question deltarider. The kit claims to have a maximum current rating of 4A. I’m guessing the nominal current draw for the original system is circa 3 to 3.5amps with OE coils? Is that uncomfortably close or are the units generously thermally rated in your opinion?Apologies for such a basic question, but my electrical knowledge is pretty rudimentary. So is mine actually To me it seems there is nothing to worry about. Mine have switched current trillions and trillions of times (both 4,7 OEM as well as 3 Ω Dyna coils) and the unit is protected by zener diodes. The old Velleman K2543 parts, like I have used on my bike, have the TIP 162 as a power transistor, which, it seems, is no longer available. The newer which I am about to solder for a friend, have the BU931P transistor. No idea if that makes much difference if any. Experts are welcome to share their views.
