Hi, Dene. Now that you mention it, I'm pretty sure these ignition switches are double pole, although I can't remember how they are wired. I must dig out that wiring diagram.
I always knew Rob was a daring man! But I find hard to don't believe that battery story, because that is only a 7.2 amps battery, and coils must take a serious drain! In my experience, as soon as the battery voltage drops, the engine is much harder to start, too. Anyway, as soon as I restart the engine, I plan to run a test on ground to see what the situation is with the dual ignition. If I don't get at least 20 minutes on battery only, then I will think of upgrading the battery. Serge Vidal KR2 "Kilimanjaro Cloud" Paris, France "AVLEC" <av...@telkomsa.net> Envoyé par : krnet-boun...@mylist.net 12/27/2005 09:10 PM Veuillez répondre à KRnet Remis le : 12/27/2005 09:02 PM Pour : "KRnet" <kr...@mylist.net> cc : (ccc : Serge VIDAL/DNSA/SAGEM) Objet : Re: Réf. : KR> Serge's ignition Hi Serge I spoke to Rob this morning and he says that he had it wired like that all the time (through a double pole switch). The only thing I would have changed in his case would have been to install a second battery so that the 12V supply could be changed out as well. When you talk about a relay, it is really a solid state device and not an electro mechanical relay.That ignition must be very light on power, he says that he ran the motor without an alternator for the first 100hrs or so without ever recharging the battery! Just how accurate his memory is I don't know. His address is: 158 Villiers Road Walmer Port Elizabeth 6056. Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net ----- Original Message ----- From: "Serge VIDAL" <serge.vi...@sagem.com> To: "KRnet" <kr...@mylist.net> Sent: Tuesday, December 27, 2005 11:02 Subject: Réf. : KR> Serge's ignition Hi, Dene. Yes, that is a very interesting thought indeed, and very seducing too. Although I won't go that route at this stage, because my electrical system has not been built so as to be modified easily. There are two of these fancy aircraft connectors with crimped pins to go through... (leftovers from the Rooivalk attack helicopter development program!) I can see no reason why this electronic ignition system won't work with a six cylinders. I would strongly recommend that you install two sets of pick-ups (after all, we don't know how well these components age), but I agree one spark plug per cylinder and one set of coils should do the trick. By the way, have you got a mail address for Rob Van der Merwe? Happy new year, Serge Vidal KR2 "Kilimanjaro Cloud" Paris, France "AVLEC" <av...@telkomsa.net> Envoyé par : krnet-bounces+serge.vidal=sagem....@mylist.net 24/12/2005 12:34 Veuillez répondre à KRnet Remis le : 24/12/2005 12:25 Pour : "KRnet" <kr...@mylist.net> cc : (ccc : Serge VIDAL/DNSA/SAGEM) Objet : KR> Serge's ignition Hi Serge I was just thinking about your primary ignition system (the one with the centrifugal advance). You actually have two seperate systems there which are joined by one common mode of failure, the switch. If you changed the switch to a double pole switch with two seperate positive supplies and a seperate positive supply from the switch to each "system" you will in effect have a seperate ignition system for each pair of cylinders. I suppose the same goes for your secondary ignition. I don't know how well the plane will fly on two cylinders but I suppose that is better than none at all. If anything it will improve your glide slope! I plan on using an identical system on my corvair 3100 , only mine will have an extra pickup, an extra amplifier and an extra coil. The pickups will just have to be arranged 120 deg apart in stead of 180 and it should work just fine. I don't think I will even install a secondary ignition as you have because I think the KR will be able to stay in the air and maintain altitude just fine on four cylinders should I lose one ignition. Now to find a triple pole toggle switch if there is such a thing. To all, have a merry christmas and a prosperous new year. PS. Steve from Zambia is now living here in Port Elizabeth and has been in contact with me for the past three weeks. I had a brew with him yesterday and he says Hi to all on the list. As soon as he has his computer set up and an internet connection he will join us on the list. Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html