X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=NYOYKFL4 c=1 sm=1 tr=0 a=ApVsoW9ZcMvBPLtsjcKfQA==:117 a=x7bEGLp0ZPQA:10 a=e8BSqymJ620A:10 a=sTwFKg_x9MkA:10 a=XQxfBrvntfMA:10 a=Ia-xEzejAAAA:8 a=2-ESfFLFAAAA:8 a=Z164nbgdAAAA:8 a=DIPjVFyKAAAA:8 a=DtNxgeMsovjXHlwF0x4A:9 a=QEXdDO2ut3YA:10 a=BIxVt8FFst7QapCD:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=BJFc_SdLMqBtkEIQi4mM:22 a=Y4TUgQDb98Ia9wClvSDa:22 a=rOpJtNhyx_XFkKwMnPcV:22 From: " argoldman@aol.com" Received: from sonic308-9.consmr.mail.ne1.yahoo.com ([66.163.187.32] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 219190 for flyrotary@lancaironline.net; Thu, 07 May 2020 18:44:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.163.187.32; envelope-from=argoldman@aol.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aol.com; s=a2048; t=1588891434; bh=XNvGXIUHWRA3kfQ55n9YzRMz5imPvIJsmFoBUhJwm3w=; h=Date:From:To:In-Reply-To:References:Subject:From:Subject; b=e45v7gfGzLdGq9JG502z71ip3ByEiiAD32uBFq9qsECrx0CZjXYdbJmQYkBzlJ5KOac3xWwtlCVrpYcFof2uGQknWNjKPtS7+17g7iCWWp/+j2m93ZXqkX6+8/thzDaVnTPJNcmFbgxjNlKqfIyYgdTYnBGodkFJ32fHAJuUD5qKEjkrL4Jc+1vgtVOtcUNjzqCR46eEyPjtBXryRlFd5wTMjpqQ5XUfO3DCaUCEU/yTxYhCpithDf3ftcA83PcHjKnnnIbyS1oDi6IlunJJRX7SclttlyFR/tea8iVC5Nne9CWgrRho/5kQg/cOCac19waIDBnhJ2H3Z1uEvhKkDA== X-YMail-OSG: Y_Qun2gVM1nd2WIovUfMSd.ZgOselpxjSK7Gm880za55l7jjkb65dhk2iLBx26V mVbM0U0pVzziXMZ2.IP2NL3zrYFC_fYRaKGI2lQYIA8PwzvN.vpl07OdEWkbQ3t4Fz.IlZ2ox8H2 TlxuqcjwGUkLEHhwm3O5G6GSFs_pdob3CUHG_6cNJTqqAy6vikGsx7pJuH1UQUK.HCqPoCue23c_ DTjYBZpbiwOqTDVlhFmZzNMDQMuEVE44x17oVaX3WPjPvYKE9RtuM7VLg5OnTC_2agFi6.V6.963 YjBhaFG5eGaPjarEOJPwSvgv.15MdNxl.Tv.cng2WwjUA5wr8GNQ_R.QJ8Xc1EAQarbVf.I8lGAe p4aWswpLh56axYejURHvBbzW5cVJoDwN.YKhi1p2s8OlNOfNOMg4NqZ8XDVQYI1EnAz7ouJdsNxq stNisZztvVBZQMS3JF9Xf4OBPNsWI4XOWFQ6OHKXhB7FAHRdVu0S_G6PGx7l1BzN7OvGlUUgLUBz w0HrdyvHtodIu9fnGsX.Mk3UKr6Yypq.ZGYoJodGqEv8HUrDyXk2rkRHyS4o3rawWkmDBS5fBQ_s Qxg_aaGbW545ABadGEZIvMspsOAt8kfplAQsDpKxsT22dfc_2Zra5BaZvXRNI5LRJ56jw_EvFN2I JhF3gGFjW6QV._VdjluwCYz.Wpj_PO19wUa3tmYrvalBrLKePehj4B29fc2EyE6dXrGwbAMLvTon RRF8j0cuZgnUZoSXRaZ2v7RgKm6jZwL8kDOfIZZsr0KXTch4kJo4xWmqwMWZsi6ZQCwYSOerOkkC _6aZwZO2qs7x0rUQFnqfohaYPlGElztG5qrFN508_En83Y8kVpAUFdSVXfmSX_gsWzqJB74EEUSM JIaSbpnqGFuLHq8NyOYgTPTnQDkFQfasn.dRMgiCKrGj9EJwlHCLB4qkvQhVq5pe9JQtJ5XrowkG foCQgR5GGmmnONL5JIINfQH2ds2dyzjDsXjFawqneaqY2.NvFPfUDJ8GraGQmiRI982HdVDKfvOA KANXbbA1JPmgDtJQtjUhF.BoNxho528ZYDupZ9ST1qD2MNDS0vZqo2KJhpBaeqDVIqvkLzRcO38c O.u0dwdxB4VNQmReaoUpNAIfswkiDpFdP53t3xT_wlBw7VpUnm4rmW3guzJgMrrd.hpfdiP_mPkH RaHl0yTXPz5IPSbK2u3pDdsA27VzHv3TAE.M0_mNCGxEGRhZBYNoNEp7bMKjPPYQA1OzSwL8IneA mtkZ_342zov5faEEBFt16j95fR9v7AzlbJ_vU_pO1.YA- Received: from sonic.gate.mail.ne1.yahoo.com by sonic308.consmr.mail.ne1.yahoo.com with HTTP; Thu, 7 May 2020 22:43:54 +0000 Date: Thu, 7 May 2020 22:43:49 +0000 (UTC) To: flyrotary@lancaironline.net Message-ID: <1886205204.3107277.1588891429487@mail.yahoo.com> In-Reply-To: References: Subject: Re: [FlyRotary] Re: [EXTERNAL MESSAGE] [FlyRotary] Turbos MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_3107276_193501125.1588891429485" X-Mailer: WebService/1.1.15756 aolloki Apache-HttpClient/4.5.7 (Java/1.8.0_144) Content-Length: 6649 ------=_Part_3107276_193501125.1588891429485 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Not so sure about that I think that there are some store bought aircraft that use a fixed aperture= . I believe the early Piper Seneca IIs did.It;s been quite a while but my r= apidly fading memory indicates that. A waste gate is certainly more efficie= nt whether manual or automatically actuated. Rich In a message dated 5/7/2020 5:15:13 PM Central Standard Time, flyrotary@lan= caironline.net writes: You need a wastegate on your exhaust side to regulate the amount of boost.= =C2=A0 Without it, you could overboost and create detonation=C2=A0=C2=A0 A = pressure relief valve is used to prevent overpressuring the intake side if = you slam the throttle shut.=C2=A0 It does not regulate the amount of boost.= =C2=A0 If you are always careful to close your throttle slowly, you may not= need a pressure relief valve, but you should always have a wastegate. See = the links below for more info. =C2=A0 https://www.onallcylinders.com/2017/01/19/wastegates-vs-blow-off-valves-wha= ts-the-difference/ =C2=A0 https://grassrootsparts.com/blogs/technical/blow-off-valve-vs-wastegate =C2=A0 https://www.hotrod.com/articles/spotters-guides-wastegates-and-blow-off-val= ves/ =C2=A0 Bob Rogers =C2=A0 =C2=A0 =C2=A0 =C2=A0 From: Rotary motors in aircraft =20 Sent: Thursday, May 07, 2020 4:47 PM To: Rotary motors in aircraft Subject: [EXTERNAL MESSAGE] [FlyRotary] Turbos =C2=A0 Can anyone help me with the following?=C2=A0=C2=A0=C2=A0 With a turbo, can = I just use a pressure relief valve and negate the wastegate totally??=C2=A0= =C2=A0=C2=A0Looking for simplicity and weight saving.=C2=A0=C2=A0 Neil. ------=_Part_3107276_193501125.1588891429485 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit
Not so sure about that

I think that there are some store bought aircraft that use a fixed aperture. I believe the early Piper Seneca IIs did.
It;s been quite a while but my rapidly fading memory indicates that. A waste gate is certainly more efficient whether manual or automatically actuated.

Rich

In a message dated 5/7/2020 5:15:13 PM Central Standard Time, flyrotary@lancaironline.net writes:

You need a wastegate on your exhaust side to regulate the amount of boost.  Without it, you could overboost and create detonation   A pressure relief valve is used to prevent overpressuring the intake side if you slam the throttle shut.  It does not regulate the amount of boost.  If you are always careful to close your throttle slowly, you may not need a pressure relief valve, but you should always have a wastegate. See the links below for more info.

 

https://www.onallcylinders.com/2017/01/19/wastegates-vs-blow-off-valves-whats-the-difference/

 

https://grassrootsparts.com/blogs/technical/blow-off-valve-vs-wastegate

 

https://www.hotrod.com/articles/spotters-guides-wastegates-and-blow-off-valves/

 

Bob Rogers

 

 

 

 

From: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, May 07, 2020 4:47 PM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: [EXTERNAL MESSAGE] [FlyRotary] Turbos

 

Can anyone help me with the following?    With a turbo, can I just use a pressure relief valve and negate the wastegate totally??    Looking for simplicity and weight saving.   Neil.

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