X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wr-out-0506.google.com ([64.233.184.226] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTP id 3069855 for flyrotary@lancaironline.net; Sun, 10 Aug 2008 11:31:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.226; envelope-from=cozy4pilot@gmail.com Received: by wr-out-0506.google.com with SMTP id c55so1160781wra.11 for ; Sun, 10 Aug 2008 08:30:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:reply-to:from:to:in-reply-to :subject:date:message-id:mime-version:content-type:x-priority :x-msmail-priority:x-mailer:x-mimeole:importance; bh=Gwo/Zn89r2Bp2SKUwTx3WSlHGGAQRogaHhJ4OGwSkP4=; b=uZy/OdjsAfnm6/5Y6NQBGEpeQfvF/Brd/CF8WjzErg+zzPRtZoAG47MXUaJI9jZVek owEgQ5oWjzSPIaZL6BCFU1w4X9mry+x49n3BD+Q/0MEmk57bbwpE6ltVW0OtX2G0bTGi w+RBlsebTtQvOk74bcu95vl2NkpD4wbgpy7ME= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=reply-to:from:to:in-reply-to:subject:date:message-id:mime-version :content-type:x-priority:x-msmail-priority:x-mailer:x-mimeole :importance; b=BUZtOcUfT2qbWuRET40zCnmM74uObq495ccGIjWBFKluRUx8YsLw8b3d1GUdaXyoOo Ra0+smjduPbn2Lt/WtMKCTO9NIyWs7UHubeFGEgK1yeZU05UX22Gw4wlBbsBdGqbHBLq mZor5YadR/tJ+hTPhDxrRYjc3vh0FKw0iboUU= Received: by 10.90.86.10 with SMTP id j10mr9396190agb.98.1218382243192; Sun, 10 Aug 2008 08:30:43 -0700 (PDT) Return-Path: Received: from HomePC ( [76.4.221.180]) by mx.google.com with ESMTPS id w43sm3563981hsa.3.2008.08.10.08.30.40 (version=SSLv3 cipher=RC4-MD5); Sun, 10 Aug 2008 08:30:41 -0700 (PDT) Reply-To: From: "Steve Brooks" To: "Rotary motors in aircraft" In-Reply-To: Subject: RE: [FlyRotary] 2nd flight on the new cooling system Date: Sun, 10 Aug 2008 11:29:19 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0030_01C8FADC.54564C30" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0030_01C8FADC.54564C30 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Kelly, I didn=E2=80=99t think about it before, but you are right.=C2=A0 On any = permanent magnet motor, it will generate electricity if it is = spinning.=C2=A0 Shorting the leads would cause the motor to resist = spinning. That would be very easy for me to d, as I am turning in on through a = double pole relay.=C2=A0 All I have to do is to connect a ground to the = normally closed contact on the relay. =20 Steve Brooks =C2=A0 =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On = Behalf Of Kelly Troyer Sent: Sunday, August 10, 2008 9:49 AM To: Rotary motors in aircraft Subject: [FlyRotary] 2nd flight on the new cooling system =20 Steve, I believe it was Lynn Hanover that said if you connect the power = leads (+ & - ) together when fan is not powered that it will not freewheel in = flight. =20 Jump in here Lynn and give us one of your sketches on how to wire it so as not to accidentally switch B+ (12 volts) to ground !!......... =20 -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 =20 -------------- Original message from "Steve Brooks" = : --------------=20 George, =20 The cooling fan has some resistance when the power is off, and while I = don=E2=80=99t know for sure, I doubt that it spins when the power is = off.=C2=A0 Form a longevity perspective of the bearings, I hope that it = does not. =20 Regards, =20 Steve Brooks =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On = Behalf Of George Lendich Sent: Saturday, August 09, 2008 5:47 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: 2nd flight on the new cooling system =20 Steve, Does the cooling fan spin freely when turned off or does it remain = static.=20 Those temps are much better.=20 George ( down under) I took the Cozy up this morning for the 2nd flight on the new cooling = system.=C2=A0 The OAT was 3 or 4 degrees warmer than the first flight, = as it was 79 F when I took off.=20 This time, I turned the cooling fan on while I was taxiing out to the = runway.=C2=A0 After the=C2=A0 taxi and pre-flight checks, the oil was = 135 F and the coolant was still reading pretty low.=C2=A0 Maybe 115 to = 120 or so.=C2=A0 It is a little hard to read the analog gauge down on = the low end of the scale. =20 I took off and climbed up to about 1300 FT AGL, at which time I pulled = the throttle back some and continued a cruise climb.=C2=A0 The coolant = was showing about 190F, and I didn=E2=80=99t think to check the oil = temperature.=C2=A0 Oil temperature has not been my issue.=C2=A0 It has = always been the coolant.=C2=A0 The coolant temperature did still = increase a little, even at the reduced power, but just up to 200 = F.=C2=A0 I was close to a low cloud layer at about 1800 AGL, so I = throttle back some more and dropped the nose to level flight.=C2=A0 I = also turned off the cooling fan to see what the temperature would do on = it=E2=80=99s own.=C2=A0 The temperature steadily dropped to about 180 = degrees within just a few minutes, and then stabilized there.=C2=A0=20 =20 I cruised around for a little while, flew over my house and circled it = once, and then headed back to the airport.=C2=A0 With the low cloud = layer that had moved in, I really didn=E2=80=99t know if it was going to = clear out or get thicker, so I flew the 5 minutes back to the airport, = and made a normal landing.=C2=A0 As I was ready to throttle back to = descend about 800 feet to pattern altitude, and quick check of the = coolant temperature showed about 160 degrees.=C2=A0 Not bad at all, = although I was probably flying at about 60% power.=C2=A0 Still, it would = have not been nearly that low before the new cooling system. =20 Once I landed and was clearing the runway, I checked the temperatures = again, and the coolant was less then 140 degrees after the glide in to = land.=C2=A0 Since I planned to wash the plane, and sometimes it starts = hard after getting heat soaked sitting after a run, I turned on the = cooling fan while a taxied over to the where the wash area is.=C2=A0 = After washing the plane, it started up pretty easily, so I guess that = worked out also. =20 So far so good.=C2=A0 I like what I see so far on the radiator, and the = cooling fan definitely gives me a lot more options. =20 Steve Brooks Cozy N75CZ 13B turbo to read the an ------=_NextPart_000_0030_01C8FADC.54564C30 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Kelly,

I didn=E2=80=99t think about it before, but you are right.=C2=A0 On any permanent magnet motor, = it will generate electricity if it is spinning.=C2=A0 = Shorting the leads would cause the motor to resist = spinning.

That would be very easy for me to d, as I am turning in on = through a double pole relay.=C2=A0 All I have to = do is to connect a ground to the normally closed contact on the = relay.

 

Steve Brooks

=C2=A0

 

-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Kelly Troyer
Sent: Sunday, August 10, = 2008 9:49 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] 2nd = flight on the new cooling system

 

 Steve,<= /p>

     I believe it was Lynn Hanover that said if you connect the power = leads<= /p>

(+ = & - ) together when fan is not powered that it will not freewheel in = flight.<= /p>

 <= /p>

    Jump in here Lynn and give us one of your sketches on how to wire = it<= /p>

so = as not to accidentally switch B+ (12 volts) to ground = !!.........<= /p>

 <= /p>

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold


 <= /p>

-------------- Original message from "Steve Brooks" = <cozy4pilot@gmail.com>: -------------- <= /p>

George,

 

The cooling fan has = some resistance when the power is off, and while I don=E2=80=99t know for = sure, I doubt that it spins when the power is off.=C2=A0 = Form a longevity perspective of the bearings, I hope that it does = not.

 

Regards,

 

Steve = Brooks

 

-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of George Lendich
Sent: Saturday, August = 09, 2008 5:47 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = 2nd flight on the new cooling system<= /p>

 

Steve,

Does the cooling fan spin freely when turned off or does it = remain static. 

Those temps are much better. <= /p>

George ( down under)<= /p>

I took the Cozy up = this morning for the 2nd flight on the new cooling system.=C2=A0 The OAT was 3 or 4 degrees = warmer than the first flight, as it was 79 F when I took off. =

This time, I turned = the cooling fan on while I was taxiing out to the runway.=C2=A0 After the=C2=A0 = taxi and pre-flight checks, the oil was 135 F and the coolant was still reading = pretty low.=C2=A0 Maybe 115 to 120 or = so.=C2=A0 It is a little hard to read = the analog gauge down on the low end of the scale.

 

I took off and = climbed up to about 1300 FT AGL, at which time I pulled the throttle back some and continued a cruise climb.=C2=A0 = The coolant was showing about 190F, and I didn=E2=80=99t think to check the oil = temperature.=C2=A0 Oil temperature has not been = my issue.=C2=A0 It has always been the = coolant.=C2=A0 The coolant temperature did = still increase a little, even at the reduced power, but just up to 200 F.=C2=A0 I was close to a low cloud = layer at about 1800 AGL, so I throttle back some more and dropped the nose to level flight.=C2=A0 I also turned off = the cooling fan to see what the temperature would do on it=E2=80=99s own.=C2=A0 The temperature steadily dropped to about 180 degrees = within just a few minutes, and then stabilized there.=C2=A0

 

I cruised around for = a little while, flew over my house and circled it once, and then headed = back to the airport.=C2=A0 With the low = cloud layer that had moved in, I really didn=E2=80=99t know if it was going to clear = out or get thicker, so I flew the 5 minutes back to the airport, and made a normal landing.=C2=A0 As I was ready = to throttle back to descend about 800 feet to pattern altitude, and quick check of = the coolant temperature showed about 160 degrees.=C2=A0 Not bad at all, although I was probably flying at about 60% = power.=C2=A0 Still, it would have not been = nearly that low before the new cooling system.

 

Once I landed and = was clearing the runway, I checked the temperatures again, and the coolant = was less then 140 degrees after the glide in to land.=C2=A0 Since I planned to wash the plane, and sometimes it starts hard = after getting heat soaked sitting after a run, I turned on the cooling fan = while a taxied over to the where the wash area is.=C2=A0 After washing the plane, it started up pretty easily, so I guess = that worked out also.

 

So far so good.=C2=A0 I like what I see so far on = the radiator, and the cooling fan definitely gives me a lot more = options.

 

Steve = Brooks

Cozy = N75CZ

13B turbo to read the = an

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