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3W 106 sagging in inverted or knife edge flight.

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3W 106 sagging in inverted or knife edge flight.

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Old 07-24-2008, 07:02 AM
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HoverLoW
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Default 3W 106 sagging in inverted or knife edge flight.

Hey guys, there´s a final veredict to this problem?

Mine do that to and I'd like to stop it.

I read some posts saying about a aluminum block to the 3W to replace that reed block plastick one, but I couldn't, find it. Does anybody knows something about it?



Old 07-24-2008, 08:12 AM
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Steve
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Default RE: 3W 106 sagging in inverted or knife edge flight.

Usually venting the carb inside the fuse is a good fix. If knife edges is still a problem, using a snorkle or baffling the motor helps.
Old 07-24-2008, 09:00 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

I have the same problem with my DL100. Tried putting a carb plate on it with no change, so I am now going to put a tube on the plate and a vent into the fuz.
Old 07-24-2008, 01:30 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

aircraft international has the aluminum blocks in stock. They are listed in the parts section. Basically the alum block gets warm and evaportates any fuel that may puddle in there.

Mark
Old 07-25-2008, 12:25 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

Here's the part number from Aircraft Internationals website: 3WRCHAL

http://www.aircraftinternational.com Go to accessories and click on carb mounting and induction housing. I have one, works great.
Old 07-25-2008, 06:34 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: Steve

Usually venting the carb inside the fuse is a good fix. If knife edges is still a problem, using a snorkle or baffling the motor helps.

Hi Steve! How I can venting the carb inside the fuse? And sorry my bad english, but what is a snorkle?

Thank you guys. I will see the aluminum block. But is really a good idea get one?
Old 07-25-2008, 10:03 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

How to order in AI? I searched for something, but they don't seems to keep an on line order system...
Old 07-25-2008, 10:43 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

I went through all of this recently and I did everything suggested. Then, I finally ordered the aluminum block kit and put it on. The motor ran like it never has before. It now is the smoothest running engine I have ever owned. It took 10 minutes to install the block. Aircraft international rocks, they got the block to me in 2 days!

http://www.aircraftinternational.com/
Old 07-25-2008, 05:04 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

I will go for it too. It's not safe make 3D manuvers with the engine that way... []
Old 07-25-2008, 09:41 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: HoverLoW

How to order in AI? I searched for something, but they don't seems to keep an on line order system...
Call them, if they don't answer you can leave a message for them to return your call. I have called at some strange hours to order and more often than not, someone answers the phone.
Old 07-26-2008, 07:43 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

They answered my e-mail. I need to send them by e-mail or fax my cred card information. Can I trust them? It's safe to me?
Old 07-26-2008, 08:58 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

I'd say it's safe. They've been around a while.
Old 08-04-2008, 10:23 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

Ok, guys!! I will try the aluminum block (already ordered from AI) and the TBM CF carb plate. Does anybody have any issue about it to share?
Old 08-19-2008, 02:32 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

Ok. I have the aluminum block in place and its works really great. No more sagging problems to my 3W.

It's a cheap mod that worth more than the dollars we pay for it.

It's strange, but in the AI site, they are selling the plastic block U$ 10.00 more expensive than the aluminum one.

So, I don't know why 3W is not selling this mod like standard in all their engines.

I will try the CF plate from Troy too.
Old 08-19-2008, 03:59 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

I think some, if not all AI 106 engines come with this block now. I have compared the plastic with the aluminum model and it looks as though the fit around the reed cage is now very close and leaves no room for fuel to puddle as before. If they made the plastic block to the same dimensions of the new model it would probably work as well.
Old 08-19-2008, 04:15 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

It's strange how short mods can make huge differences...
Old 09-02-2008, 08:30 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: HoverLoW

Ok, guys!! I will try the aluminum block (already ordered from AI) and the TBM CF carb plate. Does anybody have any issue about it to share?


Hi,
I had a similiar issue with my DA50 in an Extra300. When I would knife edge to the left the Engine would sag. I installed the TBM Carb plate and it seemed to have solved the problem. It was easy to install. Took longer to get the prop and cowl off than it did to install it. I cut mine with a pair of scissors and and dremeled the corners smooth. Piece of cake and no issues since and it even looks good.

Mike

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Old 09-02-2008, 08:51 PM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

Wow. Godd to hear about the great results and how it is easy to install!! [sm=thumbup.gif]

And looks pretty nice too!!!

Thank you very much for share your experience with us!!!

I can wait to ger mine in my hands!!
Old 09-03-2008, 10:20 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: HoverLoW

Wow. Godd to hear about the great results and how it is easy to install!! [sm=thumbup.gif]

And looks pretty nice too!!!

Thank you very much for share your experience with us!!!

I can wait to ger mine in my hands!!

3W 106 sagging in inverted or knife edge flight.

Mine saggs only on KE (BME110) and I just get used to this nasty effect.

Let me know if that works. Based on what I have read onnthese forums, I have the impresion that just about all the large twins will sag while in KE flight, no mather what brand.


Old 09-03-2008, 10:33 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.

ORIGINAL: Albatross


Based on what I have read on these forums, I have the impresion that just about all the large twins will sag while in KE flight, no mather what brand.

Oh man that would suck. I better never get a twin then. I like knife edge flight way too much.

PS: Hi Alejandro !
Old 09-03-2008, 10:52 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: JoeAirPort

ORIGINAL: Albatross


Based on what I have read on these forums, I have the impresion that just about all the large twins will sag while in KE flight, no mather what brand.

Oh man that would suck. I better never get a twin then. I like knife edge flight way too much.

PS: Hi Alejandro !

Yeah!!

Gas engines are the unique solution for bigger planes, but I believe they are dangerous too. They are not 100% trustable. The knife edge sagging is just one of the failures we can get.

The problem is let our expensives planes depending of the good performance of this machines.

It's not a big deal stay torque rolling and doing another engine/low-altitude stuffs with this things all day long... If they fail, the losts will be HUGE.

And, this doesn't happens only with weekend pilots.

Check out the end of this Somenzini's flight...

http://www.youtube.com/watch?v=T2khwo4YnPY




Old 09-03-2008, 11:51 AM
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Default RE: 3W 106 sagging in inverted or knife edge flight.


ORIGINAL: JoeAirPort

ORIGINAL: Albatross


Based on what I have read on these forums, I have the impresion that just about all the large twins will sag while in KE flight, no mather what brand.

Oh man that would suck. I better never get a twin then. I like knife edge flight way too much.

PS: Hi Alejandro !
Joe

give it a try !

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