flyrotary@lancaironline.net Mailing List Archive

Ed, That sounds like a good explanation for what I am seeing. The battery is about two years old. It is an Odyssey PC680. I have two batteries, one sits on the rear spar and runs all of the engine stuff, and the other one is in the nose an runs the avionics. I have pretty heavy cables running from the battery to the engine, 0 gauge as I recall, and they are not very long. Maybe 5 ft for the one hooked to the started, and 3 ft for the one ground connected to the engine block. I will check the voltage as you suggested while cranking, I also have an emergency bypass switch where I cant power the engine critical buss from the front battery, so that would also be a quick test, as I could crank from the rear battery and power the EC-2 and coils from the front. I just installed the EC-3, so I'm not too familiar with it yet. I will see if it shows the RPM during cranking. I'm not sure if it does or not. Steve Ed Anderson wrote: 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