flyrotary@lancaironline.net Mailing List Archive

Steve, My CAS was always wired correctly also. My coils \ plugs fired in test mode but not during cranking. Are you having problems with one plugs during cranking are all plugs? Bobby -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steve Brooks Sent: Sunday, November 08, 2009 9:11 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Battery Location[FlyRotary] Re: No start after engine replacement I am running an 89-91 13B engine. Both engines were JDM engines, so I assume that the CAS is the correct one. I had about 60 flight hours on the origianl engine, and the new CAS is identical to the old one, so I think it is correct. I did have the controller upgraded for the EC-3, but I beleive that Tracy tested it also. I don't have anything in between the CAS and EC-2, it is just wired per the EC-2 manual. Steve Bobby J. Hughes wrote: > > > Steve, > > You mention you changed CAS with the new engine and then replaced it > with you old CAS. Three questions. > > Did you have any kind of external circuit between the original CAS and > the EC2? Diode matrix etc. > > Did your EC2 go back to Tracy for upgrades between last time it was > running and the new engine \ CAS. > > Are you sure you have he correct CAS for your engine \ EC2 version. > > > I had a problem with upgrades \ CAS but it was on a renesis. Very > similar to what your describing. > > Before first start I installed the diode matrix what was being tested > and used by some folks. Engine started fine. > I sent my EC2 back to Tracy for upgrades and I believe he put the "fix" > on the EC2 during upgrades. When I reinstalled the EM2 it would not > start. I ended up removing the external diodes and the engine started > right up. Problem solved...sort of. > I then started having the high rpm cutout problem because of high CAS > voltage. But first I let one sparkplug fall off the engine during > testing and it smoked the EC2. So back to Tracy it went. I ended up > installing a different resistor \ zener diode circuit that Dennis H > and Mark S are using to control the voltage at high rpms. Tracy was at > a loss as to why I needed the external circuit with the mod's he has > made to my EC2. > > Bobby Hughes > RV10, Gen 1 (low oil pressure) Super Renesis ...err > 25 hrs in Phase 1, 68 hrs total engine time. > > > > > > I measured the voltage on the engine power buss, and with the master > switch on, it is 12.5 VDC. While cranking the voltage drops to 10.2 > VDC. I'm not sure what is normal, so I'm interested in any thoughts > on that. > > I switched the engine bus over to the front battery, and I was > surprised to see that while cranking the voltage dropped to 9.5 volts. > It has a rather long wire running from the front to the rear of the > aircraft, so perhaps I am dropping some voltage since it is powering > the coils, injectors, fuel pump, etc., though for this test, I did not > have the fuel pump turned on. > > I know that it does maintain the engine already running, which is > really what I intended with the emergency power bypass. > > The cranking RPM appears to be normal, but I have no way to measure > the actual RPM, that I can think of. I did watch the EM-3 during > cranking, but I did not see any RPM indication on the display. It > stayed at zero the whole time, but that may be normal. I don't know. > > Steve > > Ed Anderson wrote: > >> Ok, with a separate battery powering the EC2/3 then you wouldn't >> think >> > > >> cranking load shouldn't drop that source voltage but if >> interconnected >> > - it > >> may. However, if the battery cranking the engine is low or dropping >> > too > >> much voltage, your engine may not be making the two revs at the >> required 150 rpm. However, in that case, I wouldn't think you would >> even get the first spark. >> >> Just my 0.02 >> >> 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: Sunday, November 08, 2009 7:35 AM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: Battery Location[FlyRotary] Re: No start >> after engine replacement >> >> 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 >> >> >>> >>> >>> >> -- >> 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 >> >> >> >> -- >> 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 > > -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html