Hi Sam,
Bill makes an excellent suggestion. When setting up your static timing pointer to your pulley, if you move the spot for TDC on the pulley so that it is a few degrees before/after (rotation wise) the timing pointer (A little help here, can't recall which way is before/after TDC) thereby retarding the timing, then you can use your EM4 to ensure the timing setting in the EC3 for the Advance/Retard you want when engine is running. Then when you initially start, the firing point should occur after TDC by a couple degrees reducing the kick back probability and once running you can adjust the timing advance once for you normal operation and be done with it..
The main point is setting the static timing point so that it occurs af few degrees after TDC on the pulley.
Its been a while for me, so the rest of you guys jump in here. Sam shouldn't have to swap out his EC3 to fix his kickback problem.
Ed
Edward Anderson Anderson Electronic Enterprises LLC 305 Reefton Rd Weddington, NC 28104 -0569 704 821 7595
------ Original Message ------
Sent: 5/25/2019 2:18:11 PM
Subject: [FlyRotary] Re: How to make a program change to my EC3?
I had an EC-2, and donated my plane to the local EAA chapter who sold it to another user, so I no longer have the manual, but I believe it had a programming option for advancing the timing when the engine is running, so why not RETARD the timing mechanically and then use the advance system to bring it forward when running?
Another option would be the
MegaSquirt/MicroSquirt family of controllers. Seems to be pretty
mature tech, and at least in the case of the MicroSquirt, a very
compact and affordable package.
Charlie
On 5/25/2019 9:28 AM, Finn Lassen finn.lassen@verizon.net wrote:
I have an EC3 installed in my O-200 powered Quickie Q-200. I
was wondering if anyone might have any suggestions.?? I need
a simple (famous last words) programming change and was
wondering if anyone might have any idea how I might do this.
The problem is, the spark is not retarded during starting
and all too often I get a nasty kickback. Doesn't happen all
the time, but it still occurs.?? I have figured out that
first running the starter without the ignition turned on
seems to "loosen up" the engine and I have a better chance.
This kickback has resulted in damage to the starter bearing
and I have returned it to B&C for repairs.
The circuit hoard has two main chips which are removable.
The "A" side is the main controller for normal operations
and the "B" side is the redundant side.??
Is there any someone could figure out what programming
language was used, then modify it a bit?
Tracy programmed Lyn French's controller to retard the
spark during starting, so I know it can be done.
If I can't make this programming change, I'll have to
spend $3,000 - 5,000, installing another system, such as
SDS, so I'm making a last ditch attempt.?? I would
appreciate your thoughts.
Thanks.
Sam
|
This email has been checked for viruses by Avast antivirus software.
www.avast.com
|
|