X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bill Bradburry" Received: from vms173025pub.verizon.net ([206.46.173.25] verified) by logan.com (CommuniGate Pro SMTP 6.0.10) with ESMTPS id 7255017 for flyrotary@lancaironline.net; Wed, 05 Nov 2014 00:14:26 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.25; envelope-from=bbradburry@verizon.net Received: from Desktop ([173.57.170.65]) by vms173025.mailsrvcs.net (Oracle Communications Messaging Server 7.0.5.32.0 64bit (built Jul 16 2014)) with ESMTPA id <0NEJ00EMRVUT6G20@vms173025.mailsrvcs.net> for flyrotary@lancaironline.net; Tue, 04 Nov 2014 23:13:41 -0600 (CST) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=GLe/yVJP c=1 sm=1 tr=0 a=jjhB2sdyIRGi5VbALRhQUw==:117 a=kUPQlYmSbg0A:10 a=o1OHuDzbAAAA:8 a=oR5dmqMzAAAA:8 a=-9mUelKeXuEA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=9iDbn-4jx3cA:10 a=cKsnjEOsciEA:10 a=Ia-xEzejAAAA:8 a=LgUZ4ZVRjSLPvQJHah8A:9 a=CjuIK1q_8ugA:10 a=SSmOFEACAAAA:8 a=5q7NenjKf9DdNAasvMQA:9 a=mNq_8yZjoXmbZIsP:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 To: "'Rotary motors in aircraft'" References: In-reply-to: Subject: RE: [FlyRotary] Re: Rotary Engine & Fuel Valves Date: Tue, 04 Nov 2014 23:13:44 -0600 Message-id: MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_000D_01CFF884.FB4C8020" X-Mailer: Microsoft Office Outlook 11 Thread-index: Ac/4iv4kNyUMRcWFTbikFMbhUD//awAKpXVA X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01CFF884.FB4C8020 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Thomas, Comments embedded _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Tuesday, November 04, 2014 5:46 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Rotary Engine & Fuel Valves Bill, >With the vents in the sump tanks, the pump will not pull from the wing tanks and so they must be gravity fed. What does not show in the drawing are check valves on each vent on the sump. That allows air to leave the sump but not enter via the vent line. # So pressure relief for the sump has to come thru the lines from the wing tanks? >If the fuel filter starts to plug, the resulting low pressure on the suction side of the pump will likely result in vapor lock especially if the pump is in the engine compartment where it is hot. The filter before the pump is actually a gascolator. It has a very large area and is easy to service and drain. The pump is prior to passing fuel through the firewall per Velocity design. # I thought that might be a Gascolator in the drawing, but the change in color made me think that both the Gascolator and the pump are in the engine compartment. I have a boost pump that is prior to the Gascolator, which is prior to the dual FI pumps, then a filter after that in case one of the FI pumps shells out. > Filters are best after the pump so they are under pressure and not vacuum. Andair suggests filtering prior to the electric boost pump. There is also a mechanical fuel pump. # This doesn't sound like a rotary, what are you installing? T Mann Sent from Windows Mail ------=_NextPart_000_000D_01CFF884.FB4C8020 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Thomas,

=

Comments = embedded

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Tuesday, November = 04, 2014 5:46 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Rotary Engine & Fuel Valves

Bill,

>With the vents in the sump tanks, the pump will not pull = from the wing tanks and so they must be gravity fed.

What does not show in the drawing are check valves = on each vent on the sump. That allows air to leave the sump but not enter via = the vent line.

# So pressure relief for the sump = has to come thru the lines from the wing tanks?

>If the fuel filter starts to plug, the resulting low = pressure on the suction side of the pump will likely result in vapor lock especially = if the pump is in the engine compartment where it is hot.

The filter before the pump is actually a = gascolator. It has a very large area and is easy to service and drain. The pump is = prior to passing fuel through the firewall per Velocity = design.

# I thought that might be a = Gascolator in the drawing, but the change in color made me think that both the = Gascolator and the pump are in the engine compartment. I have a boost pump that = is prior to the Gascolator, which is prior to the dual FI pumps, then a filter = after that in case one of the FI pumps shells = out.

> Filters are best after the pump so they are under pressure = and not vacuum.

Andair suggests filtering prior to the electric = boost pump. There is also a mechanical fuel pump.

# This doesn’t sound like a = rotary, what are you installing?

T Mann

Sent from Windows Mail

------=_NextPart_000_000D_01CFF884.FB4C8020--