REFLECTOR: Fuel Filters

Thu Apr 9 22:53:22 CDT 2009

Where do you buy Racor brand filters? Any boat shop?

Dennis

On Wed, Apr 8, 2009 at 6:46 AM, Jim Agnew <jim_agnew_2 at yahoo.com> wrote:

> After many years of boating and with many years of involvement in the
> marine industry I can assure you that Racor filters are well respected and
> made.  They are normally considered the Rolls Royce of filters.  Mount them
> carefully and plumb them well and you should get long service.
>
>
> Jim
>
>
>
> James F. Agnew
>
> Jim_Agnew_2 at Yahoo.Com
>
> Tampa, FL
>
> Velocity 173 Elite Aircraft Completed & Flying
>
>
>  ------------------------------
> *From:* Gary Stull <gstull at tampabay.rr.com>
> *To:* jerry at jlbent.com; Velocity Aircraft Owners and Builders list <
> reflector at tvbf.org>
> *Sent:* Tuesday, April 7, 2009 4:33:53 PM
>
> *Subject:* Re: REFLECTOR: Fuel Filters
>
> I bought it from West Marine. It's a Racor filter. Standard filter is 10
> Microns, but 2 & 30 Microns are also available. There are multiple fuel flow
> ratings available. I think the 1 I used was a Model # 484964, but I'd have
> to verify that. It has worked flawlessly and with a spin on filter the size
> of a standard oil filter will trap alot of particulates.
>
> ----- Original Message -----
> *From:* jerry at jlbent.com
> *To:* Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> *Sent:* Tuesday, April 07, 2009 9:39 AM
> *Subject:* Re: REFLECTOR: Fuel Filters
>
> That sounds like are REALLY good fuel filter to me.  Do you have the
> manufacture and part number?  Does it have a particle size filtered spec?
>
>
> Jerry Brainard
> Jerry at JLBEnt.com
>
>
>    -------Original Message-------
> From: Gary Stull
> Subject: Re: REFLECTOR: Fuel Filters
> Sent: Apr 07 '09 8:17am
>
> I use a Marine fuel filter with a water seperator. It has a spin on
> replaceable cartridge with a transparent bowl on the bottom with a quick
> drain to remove water. ----- Original Message -----
>
> *From:* KMis178813 at aol.com
> *To:* reflector at tvbf.org
> *Sent:* Monday, April 06, 2009 10:43 PM
> *Subject:* Re: REFLECTOR: Fuel Filters
>
> Collective
>     For the new builders (or the old builders with new engine install) be
> careful not to save money on fuel filters!! Automotive filters are typically
> paper elements and when introduced to fuel with water trace's clog with a
> gel substance. Aircraft filters are usually metal screens and will pass
> water but not debris. At least this gives you a fighting chance if you have
> some water.
>     The Factory vent line that Brian referred to went up the firewall to
> the roof and then a foot forward before returning to the firewall and then
> out the belly. The reason for this was from another factory plane with full
> tanks and a much increased angle of attack (with high output engine) the
> front of the strakes were higher than the vent line. Normally the fuel would
> have just come out the vent but in the configuration that it was installed
> the fuel came out the vent directly into the induction air stream and went
> to way rich on the mixture. After the engine lost power the angle of attack
> lessoned the mixture went correct and then repeated. Moving the vent forward
> on the roof increases the vent height when the nose is high. FWIW
>      Ken
>
>  In a message dated 4/6/2009 1:12:45 P.M. Eastern Daylight Time,
> nmflyer1 at aol.com writes:
>
> I have several fuel filters. I have one of those glass jobs on each line
> that goes from the tank into the sump. Once I run enough fuel through this
> thing, those will come out. I also have another filter just before the
> pumps. This one is cleanable and will stay in.
>
> Kurt
>
>
> -----Original Message-----
> From: aminetech at bluefrog.com
> To: Velocity Aircraft Owners and Builders list
> Sent: Mon, 6 Apr 2009 11:04 am
> Subject: Re: REFLECTOR: Engine failure causes
>
>
>
> --- michalk at awpi.com wrote:
>
> From: Brian Michalk <michalk at awpi.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: REFLECTOR: Engine failure causes
> Date: Mon, 06 Apr 2009 11:10:59 -0500
>
> I've been going through the possible theories as to why my engine failure
> occurred.  I didn't want to post rampant speculation, but a week has passed,
> and I need to bounce some ideas off the collective.
>
>
>
> More unlikely theory #4: Water in fuel
> Even though I did not check the sump before first flight, the tanks with
> caps on are very tight, and the! plane kept in a hangar.  Again, the high
> angle from takeoff might have injested the water.  There should be evidence
> of water in the main tanks if this theory is correct.  The dry fuel return
> hose begins to rule this scenario out as a candidate.
> *I believe I had water in my fuel once.  I recieved fuel at a class C
> airport after I had done my preflight and did not sample the gas after
> fueling.  At about 300 ft agl the engine cut out and regained power about 3
> times in rapid succession.  It's basically the same way a car runs with
> water in the fuel.  I then reduced climb to 500 ft/min and the engine ran
> fine.  The control tower must have noticed as they instructed me to maintain
> a good rate of climb.  At 3000 ft I increased the climb to 1000 ft/min and
> experienced a few mild hesitations, so I went back to 500 ft/min and
> proceeded with caution without further incident during my 3 hour flight.
> After landing I checked the carburator bowl and found no water.  However
> avgas in the South is aromatic based and can dissolve 500 ppm of water, so I
> wasn't too surprised not to find any*.
>
> More unlikely theory #5: excessive vacuum on vent line
> It might be possible that the vent line exiting the plane is in a high
> vacuum area.  I'll try to simulate with a leaf blower.
>
> *Not sure this matters.  I have my fuel filter before both fuel pumps and
> neither pump has any problem sucking the fuel through the filter.
> *
> John
>
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-- 
All the best,
Dennis
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