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Old 04-03-2012, 02:21 AM   #1
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Questions?? Correct position of Ins-box air filter

To whom it may concern,

Is there anyone who can tell what is the correct position of the Ins-Box ( 1/10 & 1/8)we are using ?

The holes must look:
  • The engine crank?
  • Front windshield?
  • Back windshield?
  • Left?
  • Right?
  • Other?
Does the position of the hole affects engine perfomance when weather changes?
What is the most common position?

PS: Prefer answers with evidence

Regards,
Nikos
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Correct position of Ins-box air filter-insbox.jpg  
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Old 04-03-2012, 02:51 AM   #2
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I doubt there is a right position, it's whatever you want.

Multiple people have said the engine may go a little leaner on the top end with it facing forward, about all I have noticed is you end up with more crap in the box when it's been run facing forward.
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Old 04-03-2012, 03:52 AM   #3
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The funny thing is that this is one of the most unclear subjects since we have started using these boxes.
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Old 04-03-2012, 04:07 AM   #4
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Quote:
Originally Posted by Bishop View Post
you end up with more crap in the box when it's been run facing forward.
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Old 04-03-2012, 05:26 AM   #5
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My experience in national racing class 1/10 with ins box, no experience with 1/8 though, just assumptions.

facing forward: gives an irratic running engine, no evidence of more dirt in the filter though ? Maybe keeping out off the grass helps (no cutting corners)

facing rearward: good position, also with keeping it clean (with 1/8 you have al lot off influence (air sucktion )from the rearwing i think)
facing down: good position but will get dirty because off dirt thrown from the rear tire (not with 1/8 though, so maybe the best position for 1/8)
facing toward the engine: not good because off the hot air, some use it in damp conditions but i think it will accumulate moistire.

Hope this helps you.

Last edited by djiewie; 04-03-2012 at 05:36 AM.
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Old 04-03-2012, 05:40 AM   #6
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Quote:
Originally Posted by nikoskar View Post
To whom it may concern,

Is there anyone who can tell what is the correct position of the Ins-Box ( 1/10 & 1/8)we are using ?

The holes must look:
  • The engine crank?
  • Front windshield?
  • Back windshield?
  • Left?
  • Right?
  • Other?
Does the position of the hole affects engine perfomance when weather changes?
What is the most common position?

PS: Prefer answers with evidence

Regards,
Nikos
αυτο σε μαρανε εσενα......ελεος!

this is what you are missing mate....for god shake!
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Old 04-03-2012, 06:18 AM   #7
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Knowledge must be transfered mate Nickiphorosn. We can learn from each other and not have the knowledge for ourselves.

Thanks guys for the answers. keep them coming. Every opinio is worth.
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Old 04-03-2012, 07:26 AM   #8
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Quote:
Originally Posted by djiewie View Post
My experience in national racing class 1/10 with ins box, no experience with 1/8 though, just assumptions.

facing forward: gives an irratic running engine, no evidence of more dirt in the filter though ? Maybe keeping out off the grass helps (no cutting corners)

facing rearward: good position, also with keeping it clean (with 1/8 you have al lot off influence (air sucktion )from the rearwing i think)
facing down: good position but will get dirty because off dirt thrown from the rear tire (not with 1/8 though, so maybe the best position for 1/8)
facing toward the engine: not good because off the hot air, some use it in damp conditions but i think it will accumulate moistire.

Hope this helps you.
does it really suck hot air if it is facing upwards? i mean, with a car moving 60km/h the airflow would minimise the hot air wouldn't it?

what about 3/4 position forward? ie a little pointing down, a little pointing forward, this way you get some air intake, but not a ram air style intake?

or alternatively, point upwards but halfway towards the rear? the air laminar flow moves across the shape of the ins box and flows through the hole of the ins box (xceed type ins box).

air tends to stick to surfaces so if you face it backwards you may not get enough air going in. If you face it up or down, the laminar flow follows the box and the air goes through the holes.

with this rationale, pointing up or down is the better psoition, with a slight facing forward position ok if running on a small track with little high speed sections.
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Old 04-03-2012, 07:30 AM   #9
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What ever position you choose, if your engine runs consistent, it is a good position......
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Old 04-03-2012, 07:33 AM   #10
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Quote:
Originally Posted by nikoskar View Post
Knowledge must be transfered mate Nickiphorosn. We can learn from each other and not have the knowledge for ourselves.

Thanks guys for the answers. keep them coming. Every opinio is worth.
Ok nikoskar ...if it s a matter of knowledge transformation , then i got nothing to comment on....i thought that we had more important things to solve , not just the position of the insbox......i don t think that the right position would give me the 17,5 lap time in R1 that i have lost since april 2011 , but if you think so , go ahead and ask such questions
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Old 04-03-2012, 08:16 AM   #11
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Quote:
Originally Posted by TomB View Post
does it really suck hot air if it is facing upwards? i mean, with a car moving 60km/h the airflow would minimise the hot air wouldn't it? (Did you ever experience standing on the driverrostrum an engine going in the pits that you can smell the heat off almost. Thats why)

what about 3/4 position forward? ie a little pointing down, a little pointing forward, this way you get some air intake, but not a ram air style intake?
Try it and you will know

or alternatively, point upwards but halfway towards the rear? the air laminar flow moves across the shape of the ins box and flows through the hole of the ins box (xceed type ins box). Maybe

air tends to stick to surfaces so if you face it backwards you may not get enough air going in. If you face it up or down, the laminar flow follows the box and the air goes through the holes.

with this rationale, pointing up or down is the better psoition, with a slight facing forward position ok if running on a small track with little high speed sections.
noticing your avatar it seems to me Tomb that you don`t need advice from me But we agree almost

Last edited by djiewie; 04-03-2012 at 08:30 AM.
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Old 04-03-2012, 10:34 AM   #12
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I believe that you want the intake ports facing toward the crankshaft.

When they are facing forward the engine will get too much air on the back straight which causes either a lean engine on the back straight or a too rich engine on the infield.
Don't think you want it to face backwards since there you have a low pressure zone and a lot of turbulent air which could cause the engine to receive less air as the speed increases.
Having it facing towards the crank could cause some extra debris/foam getting into the box, but since you should clean it after every raceway anyway I don't think this is of much influence.
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Old 04-03-2012, 10:18 PM   #13
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I always thought facing it backward would be the best solution.

Imagine sticking your head out (facing forward) of a car window going at 100khm and try taking a deep breath, now face backward and try the same thing. U get the point...
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Old 04-03-2012, 11:10 PM   #14
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I don't think there is a right or wrong answer. I researched this a while ago, and looked at various photos from the previous worlds. As you can see, there is no real common position....


Collari runs it backwards...



Dario runs it facing the crank...



Pietsch runs it facing the engine...



Ielasi runs it facing forward...

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Old 04-04-2012, 12:57 AM   #15
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In real motorsports all air intakes are faced forward.....
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