What do you use to filter your fuel

[pipemakermike]

How often do you filter it and how many filters does it go through between the jug and the needle.

[Tim Wescott]

I have a filter on the pickup from my fuel bottle, and another one between tank and needle.  It makes a huge difference.

[john e. holliday]

I usually just pour the fuel from the gallon jug into a quart can on my pit box.   If the jug is kept capped there should be no reason to filter the fuel.  I do use filters on the planes and clean them every so often.   

[James_Mynes]

I have a filter in my syringe tubing, so I fill the syringe through a filter. then hopefully I remember to squirt a little back in the jug to clean the filter before filling the tank. Some of my airplanes have a filter between the tank and engine, some do not.

[Bootlegger]

 How about using coffee filters as you pour it into your container that goes to the flying site with you?

[Lauri Malila]

I think that coffee filters are not good. They are not designed to filter off the small fibres that can cause problems. Also, when the filter paper gets filled with oil, the flow gets really slow. That increases the risk of contamination (water) and evaporation.
Commercial ready-mixed fuels and good quality fuel ingredients, if you mix yourself, are so clean that filtering them is not necessary.
I have one of those fancy-looking machined aluminium in-line filters (Dubro) in the filler bottle, they are too unreliable and big to go into the model. But they have a nice fine mesh filter with big surface area.
In the model, I like the transparent Sullivan filter #187. Everybody says that they never leak, I also haven't had any problems but still I allways secure them with a piece of extra fuel line around the nipples and some heat shrink. Also, I ofter shorten them by removing the coarser filter.
I think the "traditional" ones with threaded connection in center are crap, they have a very small filter surface area and they are prone to leak.

Lauri

[Lauri Malila]

Pics..

[Garf]

I mix my own so I made up a filter funnel. I don't filter the oil, but mix in one bottle then pour thru the filter funnel to the final bottle. I like the Kavan filter with tapered screen for the airplane. For first flights, I use a 1/4 scale filter going to the Kavan filter later.

[wwwarbird]

I have a filter on the pickup from my fuel bottle, and another one between tank and needle.  It makes a huge difference.

 Same here.

[Perry Rose]

I mix my own using Fox castor oil, no longer available from Fox, and methanol from the drag strip, VP fuels. I mix the oil 50/50 with methanol and then filter that into the 5 gallon container through a coffee filter made of brass looking metal mesh screen, very fine and bought in a grocery store. Then filter the methanol the same way and pour in a gallon of 10% 22% Powermaster. When I fill the gallon jug from the 5 gallon jug I filter it through a small automotive fuel filter. I pour from the gallon jug into a quart jug on the flight box that has a weed wacker engine fuel filter on the pick up tube. It has a felt pad as a filter. From the syringe there is a standard model fuel filter to the tank and another from the tank to the engine.  If I use store bought fuel I just use the last two filters. No problems either way.

[MarcusCordeiro]

Same here.

Me too...

Marcus

[dirty dan]

I have found really effective fuel filters at motorcycle shops. They are used after blending stage, immediately prior to filling whatever containers will be used at the field. Mostly gallon cans.

Dan

[Howard Rush]

Lately I use capacitors.

[Randy Cuberly]

Lately I use capacitors.

I tried that but they get all soggy from the fuel!! 

Randy Cuberly

[Bootlegger]

 Whut about one of them thar paint strainers??

[Steve Helmick]

I use a modified ketchup pump fueler, based on the one Dan gave me. It has two filters in the line between the pump head and the plane's fuel tank. The first filter (roughly 1" diameter) is one from a motorcycle shop, and the second one is an R/C car filter with a tapered cylindrical filter element (lots of surface area), or a Sullivan "Crap Trap". I pour fuel straight out of the jug into my gallon fueler, which actually only holds about 3/4 gallon. I have another Crap Trap in the plane.

Them thar paint strainers would take the big chunks of ratchit out of your fuel, ifn there was sum. I'd rather use the foot off a pair of pantyhose!   Steve

[Mark Scarborough]

I think its a diode bridge,, but its been a long time since electronic theory,, so it may be capacitors,,

Howard,, back to work,,

[Mike Greb]

Choke Coil

[RknRusty]

I think its a diode bridge,, but its been a long time since electronic theory,, so it may be capacitors,,

Nah, Mark, a diode bridge would be your one way check valve. Gotta have an R-C circuit for proper gunk removal.

I have a Dubro fuel pump filter on my syringe for drawing out of the bottle. Then I unplug it from the Luer-Loc barb on the syringe tip and fill the tank. And then feed the engine through either a crap trap or a Dubro fine screen screen filter. Someone mentioned a coffee maker filter above, not the paper one, a nylon one. I gotta dig that out for fuel transfer between containers.

[Gerald Arana]

Reply to #15.............Gubberment employees

Yes and Yes! 

PS: I used to be one and I know how useless, oh wait a minute....

[John Leidle]

  Take apart brass filter by Hanger 9