flyrotary@lancaironline.net Mailing List Archive

Steve, thinking some more about your problem, the fact that your engine sparks on the first attempt but fails or is much weaker on subsequent attempt once again would indicate there is barely enough juice left to fire the spark on the first rev, but then the drain has pulled your voltage at the EC2 or spark coil down sufficient that it is unable to fire on the second round. So either that or as Tracy Crook indicated, the juice is too low to maintain the required 150 rpm for two prop revolutions. Both conditions could exist due to low voltage. Take your voltmeter and attach it to the DC power lead to your EC2 and see how much it drops under cranking conditions. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Saturday, November 07, 2009 7:23 PM To: Rotary motors in aircraft Subject: [FlyRotary] Battery Location[FlyRotary] Re: No start after engine replacement Steve, where is your battery located? Engine compartment or nose?? Long leads can drop a lot of voltage under cranking current. New engine may have higher compression and may take more juice than previous engine to turn it over fast enough. The fact that your old engine was also hard to start makes me wonder. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steve Brooks Sent: Saturday, November 07, 2009 4:46 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: No start after engine replacement That's interesting. I had not made any changes to mode 8, but it is certainly easy enough to reset it to default. Steve Steven W. Boese wrote: > Steve, > > It might be useful to reset the EC2 timing mode 8 setting to the default setting. My EC2's do not produce consistent or strong sparks at RPM's less than about 1200 if the EC2 timing is advanced using mode 8. The greater the advance, the weaker the spark. Occasionally there will be a strong spark, but the timing on these is very retarded. With my EC2's, the most consistent low RPM sparks are obtained at the most retarded mode 8 setting, but the EC2 must be receiving CAS signals (engine running) in order to make this change. > > Steve Boese > > ________________________________________ > From: Rotary motors in aircraft [flyrotary@lancaironline.net] On Behalf Of Steve Brooks [cozy4pilot@gmail.com] > Sent: Saturday, November 07, 2009 1:09 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] No start after engine replacement > > I replaced my original engine with another newly rebuilt block, and also > added the EM-3 to the installation. The old engine was hard to start, > and was also making a ticking noise when it did start, which didn't used > to be there. > > After several failed attempts, and double checking the connections, I > had a neighbor help me do some testing. While the ignition test runs > fine, when checking one of the plugs, it sparks when I initially crank > the engine, and then stops. Once in a while there will be another > spark, but not very often. > > I reinstalled the original CAS and have the same issue. I have double > checked the CAS connections and checked them with an ohm meter to the > connector on the EC-2 also. Everything seems to check out, yet I get > only that initial spark. I have replaced the spark plugs with new ones, > and whenever I pull one to check it, is is wet with fuel, which is no > surprise. > > I am wondering if anyone has seen this type of problem, or if you have > any suggestions. > > Regards, > Steve Brooks > Cozy MKIV 13B turbo > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com