Inside the.....? (solved, MS 500i)

[Deets066]

Looks good Steph, I love a saw with good acceleration.

 

[Hinerman]

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here is the freak out part, most of the people will hate me for that decision
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i'am really not a PopUp lover but for the first try i choose the PopUp because the thickness of the cast on the intake side is very thin, i don't want it to put much stress on it on my first try. I have another stock piston, maybe i will do a squish cut in the future.

Here is what i mean....

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No hate here. What is with the dimples? Educate me, I've never seen that before...

 

[RI Chevy]

I was wondering the same thing. Fuel atomization maybe???

 

[rogue60]

That throttle response on that 500 is insane!

 

[MustangMike]

Same reason a dimpled golf ball goes further, the tech has been know for years. Go rough on the intake and smoother on the exhaust.

 

[MG porting]

Air is a liquid it has drag and friction it makes a boundary layer of air not really moving that's why dust doesn't get blown off your cars paint job even at 100mph.
The dimples are called turbulators basically it makes the walls slippery air can't really stick to it allowing the liquid to move faster making a turbulent flow braking up the laminar flow helping in the mixing atomisation of air/fuel as well.
That's my basic understanding of it.
Stihl have been putting them in there rubber intakes on chainsaws unnoticed for many years. (Probably other brands do this too in there rubber intakes).
Google fluid dynamics if your ever bored is a good read.
You can see the turbulaters on the rubber intake of this Stihl 088 the dimples do the same thing.
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Yep

 

[rogue60]

Same reason a dimpled golf ball goes further, the tech has been know for years. Go rough on the intake and smoother on the exhaust.

And nature has known about it for about a million years before we worked it out one example is shark skin.

 

[Woodpecker]

And nature has know about it for about a million years before we worked it out one example is shark skin.

Snackies cellulite would be another gooder example

 

[av8or3]

The dimples are present on the inside of the Stihl intake boot for the 026. Maybe other Stihls as well. I think they are protruding instead of recessed.

 

[ferris]

 

[dustinwilt68]

Can't say I like the looks of that filter after use.

 

[PA Dan]

Can't say I like the looks of that filter after use.

I would have thought it would look a lot worse after 3 months!

 

[dustinwilt68]

I would have thought it would look a lot worse after 3 months!

It only didn't hold more cause the filter was full and didn't have anywhere else to hold on to, Maxflow will build a suitable filter I am sure. Still curious why they used air injection on the 462 and not the 500i? Just seems like that would have been a good idea. Guy said they PD 1700.00 for that saw over there.

 

[deye223]

3 months pro use and not even a filter clean ...... i dont see a problem there at all ......

 

[av8or3]

3 months pro use and not even a filter clean ...... i dont see a problem there at all ......

Me either.

 

[dall]

And it stihl ran

 

[PA Dan]

I personally have seen HD2 filter with way more dust and chips packed into it. That didnt look like what I thought a 3 month filter would look like!

 

[MustangMike]

I can't imagine not cleaning a filter for 3 months … and I don't use em like these guys!

My local tree guy blows out his filters with compressed air every evening.

 

[StephK87]

We will see, the ported 500i is now sold to a professional user. Every day use, he replaced two saw's with the 500i because of the weight, his 560xp and 372xp. I'm curious how the saw will hold up in the next few months. I'll keep you updated. The next 500i with heated handles is on it's way to me

Gesendet von meinem SM-G965F mit Tapatalk

 

[deye223]

I wash all my filters in petrol when I have no clean ones , I have 5 for the 261 and 4 for my 460