X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 6824753 for flyrotary@lancaironline.net; Sat, 12 Apr 2014 06:34:03 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=n360tg@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=a0JTLfmBJBtvb9V1UmdgJrbgB9TSFkrPYBUkUKKh6k59FsXzLfjl45fwzgLgGpUR; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [166.147.111.122] (helo=[172.20.10.2]) by elasmtp-kukur.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1WYvFY-0006jD-6i for flyrotary@lancaironline.net; Sat, 12 Apr 2014 06:33:28 -0400 From: Thomas Giddings Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-14-232295141 Subject: Re: [FlyRotary] Re: Switcheroo from turbo to not Date: Sat, 12 Apr 2014 06:33:26 -0400 In-Reply-To: To: "Rotary motors in aircraft" References: Message-Id: X-Mailer: Apple Mail (2.1085) X-ELNK-Trace: 77b0437ff618fec294f5150ab1c16ac0b4de374c5ae8ff79ff38783ea1307e231ca31f32a3e21144350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 166.147.111.122 --Apple-Mail-14-232295141 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 M84 1865.00 AU....I was going to go with Tracy's Equipment and I am sure = it would have worked fine,but the engine builder has had a lot of = experience with Motec and Tuning ect. I yielded to there wisdom. KIND REGARDS Thomas Giddings n360tg@earthlink.net 727 858 1772 On Apr 11, 2014, at 10:42 PM, Neil Unger wrote: > You have taken the top line ECU, but very expensive.=20 > =20 > From: Thomas Giddings > Sent: Saturday, April 12, 2014 12:36 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Switcheroo from turbo to not > =20 > My engine will be run by a Motec. It is australian as well.. > KIND REGARDS > Thomas Giddings > n360tg@earthlink.net > 727 858 1772 > =20 >=20 > =20 > On Apr 11, 2014, at 10:06 PM, Neil Unger wrote: >=20 >> No secret really, just a microtech ECU which is Australian! (Had to = get that one in!) I can only go by the A/F ration as per fuel burn. = With tracy=92s I kept it at around 12.5 as the engine seemed happier = there, while the microtech is running great at 13.5 to 14. However I = must add there that I have now been advised to richen that to a max of = 13.5, so have to make a few further adjustments there. Knowing fuel = burn other than that is impossible as Tracy=92s engine monitor does not = recognise the pulse from the injectors, or I have probably stuffed up = the wiring somewhere. I also had to put a thermostat back in the line = as the ECU works from water temp, MAP, a fuel map and a TPS. You have = to set an idle map, a load map, then a WOT map. Tracy=92s is easier to = map, but needs the knob to continually fine tune the mix which was very = useful. Having finally got the ECU map right in the new ECU (I hope) it = is simply just a transfer of the numbers to any other similar engine. = The final setting I have to set is the automatic lean out in cruise. = Once you no longer fiddle with the throttle for a few minutes the ECU = says, I can lean this out for cruise, so does so to what you have set = (adjustable). It automatically richens for start and progressively = leans as the engine warms up. Once you hit the magic 85 degrees then = the fuel map is as programmed. I have had grief with blowing the main = fuse to the ECU by turning off at the master switch. Simple cure is to = now kill the engine with the coil isolation switchs. My new EGT of 1725 = is at an A/F ratio of almost 14, so can be lowered further by more fuel = and possibly advancing ignition by a degree or two. A local rotary = racing bloke tells me that he gets up to 45 degrees BTDC. AS usual, so = much to learn. Neil. >> =20 >> From: Thomas Giddings >> Sent: Saturday, April 12, 2014 8:56 AM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: Switcheroo from turbo to not >> =20 >> Ok...We all gotta know..which ECU and did your fuel burn increase>:) >> KIND REGARDS >> Thomas Giddings >> n360tg@earthlink.net >> 727 858 1772 >> =20 >>=20 >> =20 >> On Apr 11, 2014, at 6:28 PM, Neil Unger wrote: >>=20 >>> Your EGT is interesting. I could easily get up to 1850 degrees at = WOT. over about 5 hours I managed to burn out 2 sets of EGT probes due = to heat. Then I managed to stuff up Tracy;s ECU which mandated a return = for repair. While waiting for it=92s return I had the offer of a = different ECU. Once wired in and set I found that the max EGT that I = now get is 1725 degrees. Nothing else has been changed. The only = difference between this unit and Tracy=92s is that this has a trigger = box which I suspect gets the spark away just that fraction quicker and = may in fact make the spark advanced over Tracy=92s. The new unit sits = at 27 degrees BTDC at WOT. Would like Tracy to chime in on this one as = my expertise is mechanical, certainly not electrical. It may also = be imagination, but the exhaust seems quieter. Neil. >>> =20 >>> From: Mark Steitle >>> Sent: Saturday, April 12, 2014 8:14 AM >>> To: Rotary motors in aircraft >>> Subject: [FlyRotary] Re: Switcheroo from turbo to not >>> =20 >>> Sounds like a prudent plan to me. >>>=20 >>> Sent from my iPad >>>=20 >>> On Apr 11, 2014, at 4:51 PM, shipchief@aol.com wrote: >>>=20 >>>> I went out to the Hangar last Tuesday to start installing the = intercooler. Well, at least to fit a few tubes and hoses, then hold up = some parts and make plans. >>>> As I took the air discharge tube off the compressor, I noticed the = whole turbo compressor & bearing assembly wiggling around on the turbine = housing! >>>> I checked all the mounting bolts and clips, everything was tight. >>>> So I took the turbo off the engine, and realized that I probably = cooked the turbine housing. I did see EGT excursions to 1800F. What's = worse, I had a new turbo blanket. I think a heat shield would have been = better, so some cooling air could pass over the housing, but still block = radiant heat. >>>> Bummer. >>>> So I decided to go with Plan B: I ordered the bits and tube bends = to switch to naturally aspirated operation. I'm keeping the exhaust = header that the turbo sat upon, and replacing everything else past the = bottom of the firewall, to the new pipe & muffler I recently added. >>>> I'm retaining the ability to 'Go Turbo' later, but I've become = curious about what the turbo must boost to equal full throttle of = 'Naturally Aspirated'. >>>> I did build and have been running a tuned intake manifold. The = exhaust won't be a tuned header, but it is pretty good, possibly better = than the stock exhaust reactor and a whole lot lighter. It has port = discharge nozzles (reversion cones) EGT probes and a gentle sweeping = shape. Plus it's proven strong while carrying the weight of the turbo = beyond 1800F, and it passed inspection. I trust it. >>>> So I hope to run it, find the performance satisfactory, the fuel = consumption significantly reduced, and use 87 octane ethanol free mogas = instead of 92. (low compression rotors) >>>> Also, I can advance the timing to the NA spec.=20 >>>> Anyone see a problem or have advise? >>=20 >> =20 >=20 > =20 --Apple-Mail-14-232295141 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 M84 = 1865.00 AU....I was going to go with Tracy's Equipment and I am sure it = would have worked fine,but the engine builder has had a lot of = experience with Motec and Tuning ect. I yielded to there = wisdom.
KIND = REGARDS
Thomas Giddings
72= 7 858 1772



On Apr 11, 2014, at 10:42 PM, Neil Unger wrote:

You have taken the top line ECU, but very expensive. 
 
Sent: Saturday, April 12, 2014 12:36 PM
Subject: [FlyRotary] Re: Switcheroo from turbo to=20 not
 
My=20 engine will be run by a Motec. It is australian as well..
KIND REGARDS
Thomas Giddings
727 858 1772
 

 
On Apr 11, 2014, at 10:06 PM, Neil Unger wrote:

No secret really, just a microtech ECU which is Australian!  = (Had to=20 get that one in!)  I can only go by the A/F ration as per fuel=20 burn.  With tracy=92s I kept it at around 12.5 as the engine = seemed happier=20 there, while the microtech is running great at 13.5 to 14.  = However I=20 must add there that I have now been advised to richen that to a max = of =20 13.5, so have to make a few further adjustments there.  Knowing = fuel burn=20 other than  that is impossible as Tracy=92s engine monitor does = not=20 recognise the pulse from the injectors, or I have probably stuffed up = the=20 wiring somewhere.  I also had to put a thermostat back in the = line as the=20 ECU works from water temp, MAP, a fuel map and a TPS.  You have = to set an=20 idle map, a load map, then a WOT map.  Tracy=92s is easier to = map, but=20 needs the knob to continually fine tune the mix which was very = useful. =20 Having finally got the ECU map right in the new ECU (I hope) it is = simply just=20 a transfer of the numbers to any other similar engine.  The final = setting=20 I have to set is the automatic lean out in cruise.  Once you no = longer=20 fiddle with the throttle for a few minutes the ECU says, I can lean = this out=20 for cruise, so does so to what you have set (adjustable).  It=20 automatically richens for start and progressively leans as the engine = warms=20 up.  Once you hit the magic 85 degrees then the fuel map is as=20 programmed.  I have had grief with blowing the main fuse to the = ECU by=20 turning off at the master switch.  Simple cure is to now kill the = engine=20 with the coil isolation switchs.  My new EGT of 1725 is at an A/F = ratio=20 of almost 14, so can be lowered further by more fuel and possibly = advancing=20 ignition by a degree or two.  A local rotary racing bloke tells = me that=20 he gets up to 45 degrees BTDC.  AS usual, so much to learn. =20= Neil.
 
Sent: Saturday, April 12, 2014 8:56 AM
Subject: [FlyRotary] Re: Switcheroo from turbo to=20 not
 
Ok...We=20 all gotta know..which ECU and did your fuel burn increase>:)
KIND REGARDS
Thomas Giddings
727 858 1772
 

 
On Apr 11, 2014, at 6:28 PM, Neil Unger wrote:

Your EGT is interesting.  I could easily get up to 1850 = degrees at=20 WOT.  over about 5 hours I managed to burn out 2 sets of EGT = probes due=20 to heat.  Then I managed to stuff up Tracy;s ECU which mandated = a=20 return for repair.  While waiting for it=92s return I had the = offer of a=20 different ECU.  Once wired in and set I found that the max EGT = that I=20 now get is 1725 degrees.  Nothing else has been changed.  = The only=20 difference between this unit and Tracy=92s is that this has a = trigger box=20 which I suspect gets the spark away just that fraction quicker and = may in=20 fact make the spark advanced over Tracy=92s.  The new unit sits = at 27=20 degrees BTDC at  WOT.  Would like Tracy to chime in on = this one as=20 my expertise is mechanical, certainly not electrical.   It = may=20 also be  imagination, but the exhaust seems = quieter.  =20 Neil.
 
Sent: Saturday, April 12, 2014 8:14 AM
Subject: [FlyRotary] Re: Switcheroo from turbo to=20 not
 
Sounds like a prudent plan to me.

Sent from my = iPad

On Apr 11, 2014, at 4:51 PM, shipchief@aol.com = wrote:

I went out to = the Hangar=20 last Tuesday to start installing the intercooler. Well, at least = to fit a=20 few tubes and hoses, then hold up some parts and make = plans.
As I took the air discharge tube off the compressor, I = noticed the=20 whole turbo compressor & bearing assembly wiggling around on = the=20 turbine housing!
I checked all the mounting bolts and clips, everything was = tight.=20
So I took the turbo off the engine, and realized that I = probably=20 cooked the turbine housing. I did see EGT excursions to 1800F. = What's=20 worse, I had a new turbo blanket. I think a heat shield would have = been=20 better, so some cooling air could pass over the housing, but still = block=20 radiant heat.
Bummer.
So I decided to go with Plan B: I ordered the bits and tube = bends to=20 switch to naturally aspirated operation. I'm keeping the exhaust = header=20 that the turbo sat upon, and replacing everything else past the = bottom of=20 the firewall, to the new pipe & muffler I recently = added.
I'm retaining the ability to 'Go Turbo' later, but I've = become=20 curious about what the turbo must boost to equal full throttle of=20= 'Naturally Aspirated'.
I did build and have been running a tuned intake manifold. = The=20 exhaust won't be a tuned header, but it is pretty good, possibly = better=20 than the stock exhaust reactor and a whole lot lighter. It has = port=20 discharge nozzles (reversion cones) EGT probes and a gentle = sweeping=20 shape. Plus it's proven strong while carrying the weight of the = turbo=20 beyond 1800F, and it passed inspection. I trust it.
So I hope to run it, find the performance satisfactory, the = fuel=20 consumption significantly reduced, and use 87 octane ethanol free = mogas=20 instead of 92. (low compression rotors)
Also, I can advance the timing to the NA spec. 
Anyone see a problem or have=20 = advise?
 
 

= --Apple-Mail-14-232295141--