Today's Message Index:
----------------------
1. 05:11 AM - Re: low suction mystery (Gary Moshluk)
2. 05:41 AM - Re: Want to purchase a 680FLP (Mr.RPM) (Philip Guziec)
3. 07:24 AM - Re: Want to purchase a 680FLP (Mr.RPM) (Tom Fisher)
4. 11:11 AM - 500A Colemill (Dan Farmer)
5. 12:14 PM - Re: 500A Colemill (Barry Collman)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: low suction mystery |
It appears the replacement pump I received was weak as well. I'm going
to try another pump and report the results.
----- Original Message -----
From: Scottmain2003@aol.com
To: commander-list@matronics.com
Sent: Monday, September 07, 2009 8:40 AM
Subject: Re: Commander-List: low suction mystery
I had similar experience with my L-26. I isolated each segment of the
plumbing and tested one by one and eventually found the culprit. the
hard line from the inside upper left of the right engine nacelle that
goes through the bulkhead and connects to another hard line just to the
right of the oil cover had chaffed through and had a fairly large hole
allowing ambient air to enter there. I had to take the inspection covers
off that area on the wing upper panel to repair the hole and then all
worked fine. a vacuum cleaner connected to the hose at the pump made
enough of a suction noise at the hole to find the problem. Probably
been that way for years as the pressure controller was cranked all the
way in in an attempt to compensate for the bleed problem.
hope that helps
scott
In a message dated 9/1/2009 11:09:10 A.M. Eastern Daylight Time,
moe-rosspistons@hotmail.com writes:
Gary,
Have you tested the pump alone by connecting a hose directly to the
pump with the remainder of the system not in the loop?
Moe
N680RR
680Fp
From: Gary Moshluk
Sent: Monday, August 31, 2009 6:26 PM
To: Commander Chat
Subject: Commander-List: low suction mystery
To all Commander aficionados,
Having an issue with low suction specifically when running the left
engine alone. The right engine system is operating normally without the
left engine running producing about 4.2 Hg of suction. The left engine
alone will only produce 2.2 to 2.3 Hg max even at higher RPM settings.
I have a straight 560 fitted with dual wet suction pumps. The
engine driven vac pumps are piped to bulkhead fittings on each firewall
into the nacelle. The bulkhead fitting is connected to the regulator
(via hose and clamps). The regulator is "T"'d for attaching the low
vacuum switch and check valve, thence to the hardline forward to the
instrument panel. Ostensibly the dual check valves protect the
operating vacuum source from an open leak on the opposite side
When I rebuilt the instrument panel I relocated the engine gages,
centering them over/above the throttle pedestal to allow for a panel
mounted radio stack AND I added an artificial horizon, DG (airspeed and
altimeter) to the co-pilot side.
Harry Merrit sent me a used vacuum pump and regulator; both of which
I installed today. Best I can get off the left side vacuum pump is 2.2
HG of suction. The regulator adjustments so far have had a negligible
effect on the suction pressure. I had thought up until today the
problem resided with the (engine driven) pump and/or regulator ahead of
the check valve in the left nacelle but the pump and regulator still
won't get me the required suction off the left side.
Anyone out there with a theory as to what I should be looking for?
Gary (c.s "Blaster")
href="http://www.matronics.com/Navigator?Commander-List">http://www.mat
ronics.com/Navigator?Commander-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
t
href="http://www.matronics.com/Navigator?Commander-List">http://www.mat
ronics.com/Navigator?Commander-List
ms.matronics.com/">http://forums.matronics.com
tp://www.matronics.com/contribution">http://www.matronics.com/contributio
n
-------------------------------------------------------------------------
-----
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Want to purchase a 680FLP (Mr.RPM) |
Maybe you could buy this one:
http://www.mrrpm.com/
*grin*
Phil
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Want to purchase a 680FLP (Mr.RPM) |
That would be interesting.
Tom
formally C-GISS
----- Original Message -----
From: "Philip Guziec" <philipguziec@yahoo.com>
Sent: Tuesday, September 08, 2009 5:28 AM
Subject: Re: Commander-List: Want to purchase a 680FLP (Mr.RPM)
> <philipguziec@yahoo.com>
>
> Maybe you could buy this one:
>
> http://www.mrrpm.com/
>
> *grin*
>
> Phil
>
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Posted on barnstormer.com
=C2-
AVAILABLE SOON =A2 Low Time, NDH 3600+Hr. NDH Airframe, Hartzell 3 Bl
ade, Dynamically Balanced "0" TSO Props. Engines TSO 1300+ Recent New 7 Pax
Tan Leather Interior w/Super Soundproofing installed. Recent Complete Stri
p/Treat/Paint, JPI EDM760, Winglets with Recognition Lights and Strobes. Sh
rike Nose, 300 HP, Colemill Conversion IO520E Engines, New Exhaust, A1 Spec
trometric Oil Analysis, Stormscope WX-10, Century IIB Autopilot w/Radio Cou
pler. KX155 Nav/Com w/Glidescope and KX209 Nav. Indicator. KT76A Transponde
r. Wonderful aircraft for Upgrade! Sold with New Annual. Worth Waiting For!
! Price Firm =A2 Contact Jerry Schofield - TCH&S , Owner - located Ca
stle Rock, CO USA =A2 Telephone: 1 303 908 0396 . 1 303 663 3963 . 1
902 245 0622 =A2 Fax: 1 303 663 3973 =A2 Posted =0A=0A=0A
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 500A Colemill |
Hi Guys,
This has got to be N520JS, s/n 1130-60, converted to a Colemill "Super
300" in October 1966.
Best Regards,
Barry
----- Original Message -----
From: Dan Farmer
To: commander-list-digest@matronics.com
Sent: Tuesday, September 08, 2009 7:10 PM
Subject: Commander-List: 500A Colemill
Posted on barnstormer.com
AVAILABLE SOON =A2 Low Time, NDH 3600+Hr. NDH Airframe,
Hartzell 3 Blade, Dynamically Balanced "0" TSO Props. Engines TSO 1300+
Recent New 7 Pax Tan Leather Interior w/Super Soundproofing installed.
Recent Complete Strip/Treat/Paint, JPI EDM760, Winglets with Recognition
Lights and Strobes. Shrike Nose, 300 HP, Colemill Conversion IO520E
Engines, New Exhaust, A1 Spectrometric Oil Analysis, Stormscope WX-10,
Century IIB Autopilot w/Radio Coupler. KX155 Nav/Com w/Glidescope and
KX209 Nav. Indicator. KT76A Transponder. Wonderful aircraft for Upgrade!
Sold with New Annual. Worth Waiting For!! Price Firm =A2 Contact
Jerry Schofield - TCH&S , Owner - located Castle Rock, CO USA =A2
Telephone: 1 303 908 0396 . 1 303 663 3963 . 1 902 245 0622 =A2
Fax: 1 303 663 3973 =A2 Posted
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|