how to properly oil outer air filter foam
 

i am a noob. i have a losi 8ight 2.0. i have a question about oiling the air filter foam. i was wondering if you can use too much oil? i am going to attach pics of my air filter after 25 mins of run time. i never have anything penetrate the inner foam. i imagine the only thing too much oil will do is cause the engine to run rich bc it limits air flow and changes air/fuel mixture. right??

I run my outers dry. It lets a little more dirt reach the inner filter, but it never clogs up like yours. Why did they make an inner and outer unless you were supposed to run one dry and one wet?

i dont know i run on a dry and dusty track and i just oil the inside of my outer filter and on the outside of it dirt gets lightly collected and the inner filter stays clean.

I personally oil both... Its that slight extra security for me.. that no dirt can get in to my motor. yes its more hassle, and the dirt sticks-So they need replacing sooner.. but for me.. for the sake of a few filters.. and a £350+ engine... its stupid not too.. But some oil the outer and some don't.. personal preference. But I prefer the added security oiling the outer lightly does.

I flip the outer inside out and lightly oil the inside of the outer. Not real easy with the Losi since it's so thin. I really like these for the Losi.
http://shop.rcproproducts.com/produc...&categoryId=16

Rex

oh yea i like them filters i use the answer white ridged outer filters and they are easy to oil the inner of the outer filter. and collects the dirt great

I am running the Losi filter system on my D8 and D8T, along with the RCPro foams that Rex linked to. Yes, I am sponsored by RCPro...honestly though, the foams are DIALED. I do oil both as I run in dusty conditions. I also do not reuse filters. Get dirty once, toss em. As for my procedure, I soak em in oil, then squeeze the excess out by rolling them in a paper towel.

+1 except i dont throw them out. i use them for a race day then replace,put the dirty ones in a baggy and some cold winter day i will be bored enough to clean and reoil,although i am not too sure the oil lucky7 uses will ever come out !

well with me at least i dont have tons of money il use my inner filter one or twice than throw it out but the outer filters i used them more than twice after cleaning them .

I never oil the outer filter. If its a super dusty track, I'll wrap the filter in vetwrap. I don't throw my filters out either, I rinse them in a little bit of naptha to break down the oil, them wash them in Dawn dish soap till clean.

I use K&N air filter cleaner works great makes them almost new and a big bottle is like 7 bucks at any auto parts store. As for oiling the filters I put a little bit of oil in a sandwich bag and squeeze the filter until its evenly coated. I might do everything wrong so who knows. :D

Oil the filter up with a few drops here and there on the foam (inside and outside). Put in a bad and squish the foam and try and move the oil all around the filter. If you see a bit that hasn't been oiled just add a drop at that point and repeat. Once done wrap up in some tissue and squeeze all the excess out. You'll have to do this about 4 times depending on how much oil you have used.

I use an anti-static filter skin around the 2 stage filter. With those your filter lasts much longer. A lot of dust just falls off...only the finest particles get through to the real filter.

http://static.garage24.se/g24_images...&maxHeight=450

http://www.rntuning.nl/contents/media/rn%202018-2.jpg

They make them for bigscale 1/6 filters but for 1/8 scale filters aswell.

i use PJ1 motorcycle air filter spray and i spray both the inner and outer filter always, never have clumps or anything, 95% of the time the inner has no dirt on it... i clean mine with Dawn dish soap and then its good as new.

i do the same thing myself except i use the uni motorcycle filter oil and it works well

I use the Pro Honda / No-Toil filter oil and cleaner and oil both outer and inner foams.
The No-Toil oil sticks like nobody's business and clean up w/ their bio-degradable cleaner is seriously like 1,000 times easier than the old Dawn method. Literally 4-5 squeezes in the cleaner mixture and they're spotless. Stuff rocks!

On all my nitros (RC8, RC8T and GT2) I oil the inner filter and keep the outer filter dry. i clean evertything with K&N filter and trash the filters after 3-4 uses.

Its not really a big deal if a few tiny dust particles get into the engine, it won't ruin anything. In fact i ran several laps the other day when my filter fell off and i didn't even notice it. No damage was done to the engine. In fact airplanes and boats don't use an air filter at all. Its just the larger pieces of dirt that you don't want to get into the engine. That will scratch up the piston and sleeve and could ruin the engine very easily.

i'll just take your word for it ! especially since i don't follow my car around the track making sure it doesn't ingest anything bigger than 8 microns. i'll keep running my airfilter...no offense :cool:

LOL i'm not advocating to not run an air filter. Did you not read my entire post? Damage can be done if you get sand and dirt in the engine. But to think a few pieces of dust will ruin your mill is absurd. My point is oil the inner filter, keep the outter one dry and be done with it. Or oil them both, it makes no difference. You'll just need to clean the outter filter or change it more often.

If you were running on dirt, you got lucky. That's about it.

I already ruined a R 21 Plus 4 because I ran few laps with no air filter...

I ruined a werks B6 not to long ago after running 2 laps with no filter. It flamed out on me on the 2nd lap. I knew something was wrong because it had never flamed out once before then. Before I even got to the buggy I knew what was wrong. I left the filter laying on the table when I was setting up my brakes. :mad:

Oiling the outer filter is going to cause more problems than it helps for exactly the reason posted in the pictures. these motors don't suck that hard that we need 3/4 of an inch of oiled foam to catch all the dirt. The mbx5 came with a single stage filter and they worked fine, a lot of people still use the ofna universal filter elements which work too. The purpose of the outer filter is the keep the inner one from caking up and causing a clog. The pre-filter helps keep the big stuff from sticking and fall off for the most part.

I picked up one of those filter covers for 8 bucks on eBay and was well worth the money! I run on a very dusty track and always get a plastered dirt film all over my filter after a race day! Started running this cover and it's like brand-new still!

Correct Air Filter Use

Hello fellow RC enthusiasts. A Very simple tech tip on air filters .

Off road filters

Normally these are 2 stage ie Inner and outer foam. The reason they have 2 stages is to offer a 2 stage protection to your engine and to allow you to simply remove and replace the outer foam for quick maintenance between heats.

The age old question is " Should we oil both stages ? " . And the answer is YES ! for off road applications you MUST oil both stages. What’s the point of having 2 stages if you only oil the inner one ? what you will find on engines that have only the inner oiled is pre mature wear, piston scoring, dirt or soot build up on internals, poor performance , flame outs, bad or irratic behaviour , poor fuel economy, short plug life … and the list goes on and on, these symptoms will accumulate over time….. “ But it gets dirty “ Um … its supposed to … err it’s a dirt filter .. umm, it filters dirt … you get it ? Stop being a show pony worrying about the dirt on the outside of your filter and clean it . How are you going to tell if its time to change it if you cant visibly see that its dirty ?

the dirt is an indicator that 1 its doing its job, 2 its time to change it to a clean one ..

When you run off road you subject the engine to fine dust , silica , rocks , grass and generally things they don’t need to ingest. The outer foam if oiled correctly , will protect the engine from these lager bits getting through. Also the oil you use is very important. Generally the thick blue gluggy motorbike stuff is going to choke your engine if you use too much. Give both stages a light liberal coating and wring out the excess. We make an oil called 3 in 1 and it’s a good medium for this purpose, or use the red K&N Spray bottle , its awesome too. It traps dust and dirt and still lets the air through without clogging the filter.

And before you tell me .. “ But my friend says you don’t need to oil both stages “ Let me ensure you that your friend is WRONG ! When you take the time to filter gram oil out of a pipe and see what actually gets through a dual oiled filter under a 100 micron digital scope, you will never run a dry outer again !

Fastening

You should fasten the filter to the carb with a good quality cable tie and have it on there TIGHT ! You should be able to pick the car up from the filter. Put a dab of oil inside the neck where it joins onto the carb to make a nice seal. Clean the inner foam filter every hour of use or when it becomes visibly dirty.
Outer foam for competition use should be replaced every 10 mins of run time.
Clean it with a decent degreaser and warm or cold water , wring out and allow to dry before re oiling.

On Road

Its just as important to oil the on road filters but you only have 1 stage and generally less dirt but you still have dust on the track that can get sucked in. make sure you check the filter foam where it attaches to the carb neck. Sometimes they detach.

Boat and plane guys don’t use filters. This is because there is generally less dirt and dust in their environment.

Now regularly clean and maintain your filter. Check for any tears , cracks in the elbow or foam.

Happy Racing MM

www.massivemods.com.au

copyright MassiveMods International

Clean as possible here, this is very important to engine life ! :nod:

Thanks great info!

no to sound rude or anything but i hope your not serious :confused: dirt/dust is a killer. you might have gotten lucky and nothing go in the engine itself. but i can tell you a extremely small piece of dirt will ruin ANY engine. i have had it happen racing motocross, the airfilter boot came loose some how and it sucked in dust some how (no chunks or anything) and fried my piston, dirt is a killer.

how do you think they come from factory ?