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Fri, 28 Jan 2022 14:32:39 +0000 Received: by kubenode507.mail-prod1.omega.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID ff3e60267b72213d42a28113cd0e8d4e; Fri, 28 Jan 2022 14:32:35 +0000 (UTC) Subject: Re: [FlyRotary] Re: One Rotor on my RX-8 engine may quit firing very intermittently To: Rotary motors in aircraft References: Message-ID: <50229e12-5679-387c-9ce6-0e7e2affe928@verizon.net> Date: Fri, 28 Jan 2022 09:32:33 -0500 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------84C4B2FD13A14D23DD55A6B5" Content-Language: en-US X-Antivirus: Avast (VPS 220128-0, 01/27/2022), Outbound message X-Antivirus-Status: Clean X-Mailer: WebService/1.1.19615 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol Content-Length: 12059 This is a multi-part message in MIME format. --------------84C4B2FD13A14D23DD55A6B5 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit OK, so it's probably not the plugs. I've been searching the archive to find the recommended colder plugs. There's talk about NGK-10, whatever that is and also Autolite AR2592 and BR10EIX but still not sure what the longest lasting ones are. Haven't really heard that flash ROM and RAM would go bad over time. If you do decide to burn new chips, do it by copying the old chips. Don't know if you can also copy over the EEPROM data too (tuning data). But that would save you from having to retune everything. Cost of chips and PICKit 2 or 3 should still be well under $100. I still don't know if Microchip provides a service where you send in chips and they duplicate them. Finn On 1/27/2022 11:23 PM, Dennis Haverlah clouduster@austin.rr.com wrote: > > Hi Finn > > I am using NGK plugs RE7C-L 6700 and RE9B-T 6701.  I use unleaded 87 > Octane car gas – alcohol but no lead and normally go 100 – 150 hours > on a set of plugs.  The current plugs were installed about 15 hours ago. > > My EC-2 controller is about 20 years old. My son-in-law Brayton > Hackbarth and I are considering burning new A and B chips because RAM > and flash ROM doesn’t last forever.   What do you think of this?  We > estimate cost to be about $250-$300 total. > > Per Jeff Whaley - we are also going to check to make sure the A & B > chips are completely inserted in the sockets. > > We will look for any cracks on the circuit board traces also. > > Dennis Havelah > > Sent from Mail for > Windows > > *From: *Finn Lassen finn.lassen@verizon.net > > *Sent: *Wednesday, January 26, 2022 9:28 PM > *To: *Rotary motors in aircraft > *Subject: *[FlyRotary] Re: One Rotor on my RX-8 engine may quit > firingvery intermittantly > > Which plugs are you using and how many hours on them? > > Finn > > On 1/26/2022 9:17 PM, Dennis Haverlah clouduster@austin.rr.com > wrote: > > I have an RX-8 in my RV-7a with Tracy’s EC-2 and EM-2.  Recently > while cruising the engine lost some power and went into a rough > mode.   It only lasted about 2 seconds and returned to smooth > running as soon as I switched to the B controller.   I landed and > have been running it on the ground to determine the cause.  It has > occurred 3 or 4 more times and only lasts seconds.  I believe I > have determined that one rotor quits firing when it runs rough. > > Has anyone else experienced this problem and is there a fix? > > Thanks > > Dennis Haverlah > > Sent from Mail > for Windows > > > > > > Virus-free. www.avast.com > > > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus --------------84C4B2FD13A14D23DD55A6B5 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
OK, so it's probably not the plugs. I've been searching the archive to find the recommended colder plugs. There's talk about NGK-10, whatever that is and also Autolite AR2592 and BR10EIX but still not sure what the longest lasting ones are.

Haven't really heard that flash ROM and RAM would go bad over time.
If you do decide to burn new chips, do it by copying the old chips. Don't know if you can also copy over the EEPROM data too (tuning data). But that would save you from having to retune everything. Cost of chips and PICKit 2 or 3 should still be well under $100. I still don't know if Microchip provides a service where you send in chips and they duplicate them.

Finn

On 1/27/2022 11:23 PM, Dennis Haverlah clouduster@austin.rr.com wrote:

Hi Finn

 

I am using NGK plugs RE7C-L 6700 and RE9B-T 6701.  I use unleaded 87 Octane car gas – alcohol but no lead and normally go 100 – 150 hours on a set of plugs.  The current plugs were installed about 15 hours ago.

 

My EC-2 controller is about 20 years old.  My son-in-law Brayton Hackbarth and I are considering burning new A and B chips because RAM and flash ROM doesn’t last forever.   What do you think of this?  We estimate cost to be about $250-$300 total.

 

Per Jeff Whaley - we are also going to check to make sure the A & B chips are completely inserted in the sockets.

 

We will look for any cracks on the circuit board traces also.

 

Dennis Havelah

 

Sent from Mail for Windows

 

From: Finn Lassen finn.lassen@verizon.net
Sent: Wednesday, January 26, 2022 9:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: One Rotor on my RX-8 engine may quit firingvery intermittantly

 

Which plugs are you using and how many hours on them?

Finn

On 1/26/2022 9:17 PM, Dennis Haverlah clouduster@austin.rr.com wrote:

I have an RX-8 in my RV-7a with Tracy’s EC-2 and EM-2.  Recently while cruising the engine lost some power and went into a rough mode.   It only lasted about 2 seconds and returned to smooth running as soon as I switched to the B controller.   I landed and have been running it on the ground to determine the cause.  It has occurred 3 or 4 more times and only lasts seconds.  I believe I have determined that one rotor quits firing when it runs rough.

 

Has anyone else experienced this problem and is there a fix?

 

Thanks

Dennis Haverlah

 

Sent from Mail for Windows

 

 

 

Virus-free. www.avast.com

 

 


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