Hmmm, I have some mode confusion going on here.  I have embedded my comments. 

Bill B
Subject: [FlyRotary] Re: Some assistance Please!

When major changes like this are made you should start from scratch on the MAP table,  (reset mode 1),  center Mode 6 with the program knob at 12:00, and reset Mode 3.  Then use a higher MP (24 - 26") to set Mode 3 which is the current instructions in the latest manual.

 

I get that I am to reset the MAP table back to original.  My confusion is with Mode 6.  I have the EC-2 and Mode 6 to set the large secondary mode is either on or off as I understand it.  I have set it to off to clear the large secondary mode.  This is done with the program knob set to 9:00.   My instructions don’t address setting the program knob to 12:00.   Then I get that I am to recheck the fuel injector flow rate with a higher MP of 24-26”.

 Mode 6 has 2 functions,  Normal (with engine running) of setting the post above staging mixture.

Next do Mode 2 at lowest manifold pressure your engine runs at.

 

I don’t understand what I am doing with Mode 2.  One of the earlier versions of my instructions talks about increasing the range of the manifold pressure that the EC-2 uses to make its changes.  This later one talks about idle jet adjustment.  I think it may have changed during one of my upgrades.  This version is dated 7-Nov-07.  Does this mode just affect the primaries and if so, when does it stop?  Thru the entire range, or just up to the stage point?  Right now, I have larger than expected primaries (330cc vs 195cc) and as a result, my MAP table is set at -127 until staging.  I am certain that this is too low, because it is bottomed out and may actually need to go lower but can’t.

No time to review the instructions so let me know exactly which part you don't get and I'll try to clarify.  ALWAYS use the latest instructions you have. 

Next do Mode 6,  checking the staging transition for smoothness.   Note! if staging is not smooth at the default setting It means you haven't got Mode 6 right yet!

 

Again Mode 6 is just on or off??!   Are you thinking of a different mode here?

 Nope.  It has 2 uses.  See instructions.   I assume you are using just the reset mode which you do without the engine running.  The main function is with the engine running.

After these steps are done and working correctly, then and only then should you start adjusting the MAP table using Mode 1 or Mode 9 (I like using 9 the best).

 

I recommend using the 4 yellow injectors for builders that have the 6 port engine but there is no reason the 2 red & 2 Blue setup from the 4 port engine won't work if you follow the setup described above.  It's so smooth,  I can't tell when my engine stages with this setup.   If your stumbles or otherwise misbehaves at staging, it means something is not adjusted right.   Do not accept anything less than smooth staging.

 

There was a hiccup at staging, but I think it was related to the fact that the MAP table set at the bottom was not really controlling properly just before staging.  I expect that this will be worked out when I get the MAP table adjusted.

 You may be right but can't tell until all steps are done succesfully and in order.   Things get really confusing if a step is skipped or not set right and then other things are done to try and compensate for it.

If you think this is a complicated and difficult proceedure, you've never had to rejet a carburetor.

 

Actually, Tracy, it seems to be pretty straightforward and not too complicated after you read it a few times.  It is hard for me to get my head around how difficult it must have been for you to figure all this out in the first place.  When I set it up in autotune, it just went to work smoothing out the engine.  All I had to do was manage the throttle to keep it on the pressure that it was tuning.  I honestly think you are a damn genius!

 

Tracy

On Sun, Feb 21, 2010 at 4:33 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

 First, some news..

I recently redesigned my cooling system due to unable to run the engine for more than about 20 min at high idle without it overheating.  Now I have the good problem.  Granted it was cold..low 60s.  But I was not able to get my oil above about 145 and the water above 185!   I ran it full bore till I got tired of holding the brakes!  I still need to do some work balancing the air between the oil and water.  And I didn’t have the cowl on, so the problem is not completely solved, but I am on the right track!

 

Now the question.

I have the Renesis that has the very small red primaries and the very large blue secondaries.  I recently changed them to all yellow.  This removes the need to balance the flow so much when it stages.  The total output is very similar between the two systems.  Now I have a larger flow when on the primaries and the secondaries kick in with a smaller change.  I removed the large secondary option using mode 6.

So I checked the mixture at 22 inches manifold pressure and it seemed fine with mixture at center setting so I deemed that I didn’t need to change the fuel flow with mode 3.  BUT when I started to let it auto tune, I noticed that it was setting all the bins to -127 until after it staged, then it started to build the graph that you normally see.  It stages at 20 inches manifold pressure.  Is that the recommended pressure?  I expected 15”??

So my question is…Should I set the mode 3 at a lower setting?  This will affect the entire range so I am concerned that I will not have enough fuel at WOT if I do that.  Should I make an adjustment using Mode 2?  I don’t really understand what dynamic range is??   What are your thoughts?

 

Thanks,

Bill B