Coarse Bru Line air filters

[kevin king]

Where do you get the coarse Bru Line air filters from? The new ones are neither green or black like the good old days, they are a tan colour, and they disintegrate and get sucked into the engine. I have been using a piece nylon stocking and o ring but it always drips out fuel after you choke it. The Bru Line ones seem to hold the fuel inside some how.
Kevin.

[kevin king]

Guess I'm about 15 years to late. Were living in the age of dripping venturis now.

[EricV]

Guess I'm about 15 years to late. Were living in the age of dripping venturis now.

Sorry, just saw this. Yeah, I was a BruLine user myself... and when they started to disappear off the shelf, i stocked up, only to find what you found. All the one's I bought were people just unloading old stock and the filters were brittle and chemically breaking down already...

But take heart, there is a simple solution, and maybe a bit of a BETTER tuning feature for a silver lining. Buy a bag of assorted rubber O-rings, and beg borrow or steal a pair of your significant others panty hose. Cut them into appropriate size shape rounds and put on 1/2/3 etc layers as you see fit and use the o-ring to hold in place. It really lets you dial in your run, and keeps the dirt out and drips in.

I looked at a LOT of other R/C Nitro car filters on line, but most looked too tall or unwieldy for cowl installs, plus were mostly made for smallish .12 -25 'ish size engines... I didn't feel like having to buy one of each until I found something that worked, so settled on the old panty hose trick.

YMMV, and that's a feature, not a bug! 
EricV

[Dan McEntee]

   The problem I have with the panty hose solution is installing them and stretching the material. When you stretch it even a little bit the weave opens up and this should dramatically change the characteristics of it. O don't remember ever reading where anyone addressed this, it's just "put a layer r two of panty hose one the venturi."
   Type at you later,
    Dan McEntee

[944_Jim]

Granted, the engines are puny...
One of the guys on CEF has been getting reproduceable and tunable results using screens from sink aerators or pipe screens. He has them on Tee Dees, and various makes/models in bigger sizes.

[EricV]

   The problem I have with the panty hose solution is installing them and stretching the material. When you stretch it even a little bit the weave opens up and this should dramatically change the characteristics of it. O don't remember ever reading where anyone addressed this, it's just "put a layer r two of panty hose one the venturi."
   Type at you later,
    Dan McEntee

I think you might be suffering from your wifes preference for "sheer" hosiery... maybe try and scalp a pair from someone's grandma?   

Ok Ok... I think from what I have experienced that as long as you are not using fishnets or sheers, that the effect of distortion is minimal, and that you will find you will prefer 2 layers minimum, once you find an acceptable grade of nylon. The range between the almost non existent filtering of the Bru-line Black vs/Green foam was pretty significant too, the black being effectively like your stretched sheer nylon.
EricV

[Brett Buck]

   The problem I have with the panty hose solution is installing them and stretching the material. When you stretch it even a little bit the weave opens up and this should dramatically change the characteristics of it. O don't remember ever reading where anyone addressed this, it's just "put a layer r two of panty hose one the venturi."

   It keeps any chunks big enough to cause a blockage (like a honeybee - which has happened - or rather, half a honeybee) out, turbulates things a bit, that is it. I just use one layer. I have never used it instead of a venturi tweak aside from one flight as a stopgap.

     Brett

[bob whitney]

home depot harbor fright and ace sell many diff green filters in thier lawnmower dept they can be cut up to what ever shape u need  one filter would be enough for a life time supply
i think even Wally has them

[Tim Redelman]

https://brodak.com/fuel/fuel-filter/intake-air-filter.html

[kevin king]

Lots of ways to make an air filter, but I've never had the fuel charge just drip out after removing my finger when choking the engine when i used the Bru Iine filters. I think the way it was designed, by fluke or intention, holds the fuel charge inside the rubber boot, and doesn't let the fuel just drip out on the ground, and into the engine cowl. All my planes engine compartments were bone dry up until not using the Bru Line air filter. For the few that care about little things like that.
Kevin.

[kevin king]

https://brodak.com/fuel/fuel-filter/intake-air-filter.html

This was the one I was using on my brand new Ro Jett 67 when it sucked the foam filter into the engine. I was not happy about it.
Kevin.

[kevin king]

Next was the black nylon stocking and O ring trick. That too was eaten and spit out of the engine. Guess I never had the correct fuel proof ones.
Kevin