Date   

Re: Airport Closed - Hurricane.

Mike Dwyer
 

This is going to be the biggest $ damage ever.  FL is a wreck!
Mike

On Sep 10, 2017 8:53 PM, "Mike Dwyer" <q2pilot@...> wrote:
Wind is blowing near 80 mph gusts.  Will be this way for 5 hours.  Looks like the eye is going to pass well east of us and I think the hangar will not get flooded with the wind this direction.  Lost power at 6:30pm so it's just flat dark and windy!
Will be curious to see what the place looks like in the morning!
Mike Q200 N3QP

On Sep 10, 2017 8:30 PM, "jay@... [Q-LIST]" <Q-LIST@...> wrote:
 

Wishing you the best, Mike. Nature is interesting, sometimes too much so. Hang on tight. 


Cheers,
Jay Scheevel



Re: Airport Closed - Hurricane.

Mike Dwyer
 

Wind is blowing near 80 mph gusts.  Will be this way for 5 hours.  Looks like the eye is going to pass well east of us and I think the hangar will not get flooded with the wind this direction.  Lost power at 6:30pm so it's just flat dark and windy!
Will be curious to see what the place looks like in the morning!
Mike Q200 N3QP

On Sep 10, 2017 8:30 PM, "jay@... [Q-LIST]" <Q-LIST@...> wrote:
 

Wishing you the best, Mike. Nature is interesting, sometimes too much so. Hang on tight. 


Cheers,
Jay Scheevel


Re: Airport Closed - Hurricane.

John ten
 

Good Luck, Mike.


Re: Airport Closed - Hurricane.

John ten
 

Good Luck, Mike.


Re: Airport Closed - Hurricane.

Jay Scheevel
 

Wishing you the best, Mike. Nature is interesting, sometimes too much so. Hang on tight. 

Cheers,
Jay Scheevel


Re: Fuel system anomaly video

Jay Scheevel
 

Matthew, 

I suspect a slightly different problem. Once you enter high speed level line of flight, there is a low pressure area that migrates to an area near the top rear of the canopy, where the canopy frame meets the seat back bulkhead. This is usually not an airtight seal. See the red area in the attached picture (low pressure). 

When you are at lower speed and a higher angle of attack, this same low pressure area is closer to the front of the canopy where plex is a solid piece and is consequently airtight. I suspect that when you reach 140-ish the low pressure area serves to de-pressurize your cabin through the crack between the canopy and the bulkhead. 

My thought is that the top of your fuel sight gauge (main tank) is in communication with the cabin pressure. If there is a small crack in the gauge tube inside the tank, then the low pressure in the cabin could draw air through the crack and into the standing fuel gauge column, showing up as bubbles. Regardless of the source of the bubbles (could be "boiling" fuel as previously suggested), such communication will tend to depressurize your tanks, and may be sufficient to overwhelm the ram air tube, especially if the ram is poorly positioned.  

If I am correct, I think the only thing to do would be to install a fuel pump downstream of the header that can be used as needed to send pressurized fuel directly to the carb. The long term fix would be to install gauges that do not communicate with cabin pressure, so the ram air will be more effective. 

My two cents.

Cheers,
Jay Scheevel, Tri-Q, still building. 


Re: Fuel system anomaly video

Mike Dwyer
 

Are you using Ethanol based fuel?  If so, STOP.  Could something be heating your fuel line?  Is you fuel line metal and near the exhast?
Mike



On Sun, Sep 10, 2017 at 10:33 AM, Matthew Curcio mlcurcio89@... [Q-LIST] <Q-LIST@...> wrote:
 

Okay guys I got a video! Prepare to be perplexed.

So a background to this. I put a factory overhauled carb on here and that took car of the power loss on take off issues. I then found an issue where when I am going above 140mph I get a fuel starvation issue where the engine leans out and will begin knocking even. It does not do it consistently or predictably. Pulling carb heat will smooth everything out and make it run perfectly fine. 

I have also noticed this odd anomaly on the fuel system gauges. The splashing in the header glass is not continuous but the bubbling in the main gauge continued until I landed. I have to wonder if the issue above is related to this but I don't see how they could be.



Re: Jon Finley

Patrick Panzera
 

It was during one of the AWESOME Livermore tandem wing gatherings. I invited Paul to join us, so he flew in with his highly modified Lancair 235 - which was powered by a stock Continental O-235. Jim's O-200 is more than stock so they're "close enough" in power, but Jim couldn't use a spinner - accounting for a few mph lost.

On Sep 10, 2017 1:06 PM, "logistics_engineering@... [Q-LIST]" <Q-LIST@...> wrote:
 

No, he took off his plane to let me try it out.

Jim Patillo
N46JP - Q200


Re: Jon Finley

Jim Patillo
 

No, he took off his plane to let me try it out.

Jim Patillo
N46JP - Q200


Re: Airport Closed - Hurricane.

Mike Dwyer
 

I just saw some video of the local beaches and Tampa Bay.  The water is being sucked out!  As long as the Hurricane stays to the east of us the hangar should stay dry.  As long as we have power I will be posting video from the house hourly on my youtube channel.  Don't have much else to do...


Mike n Liz 




Re: Jon Finley

ryan goodman
 

Wow..yeah that is a lot. Do you still have the prop he gave you?


On Sun, Sep 10, 2017 at 1:31 PM, logistics_engineering@... [Q-LIST]
wrote:
 

Paul Lipps was a friend of mine and let me use the Ellipse prop off his Lancair for testing on my Q200.
It was proven at Reno that his props would increase speed. Don't recall the name of the race plane but it went significantly faster with Paul's prop on it.

Paul's prop was a 62/78 and was a little to much for my 120HP Q but I did pick up several knots, just didn't make enough rpm to produce the HP to go really really fast.

I wanted to have a 60/72 made but Paul wasn't making them. I asked Craig to make one for me but he wanted 3k to do it because of the complex mfg. I didn't persue it further after Paul died.

Jim Patillo
N46JP Q200


Re: Jon Finley

Patrick Panzera
 



On Sep 10, 2017 12:30 PM, "logistics_engineering@... [Q-LIST]" <Q-LIST@...> wrote:
 

Paul Lipps was a friend of mine and let me use the Ellipse prop off his Lancair for testing on my Q200.
It was proven at Reno that his props would increase speed. Don't recall the name of the race plane but it went significantly faster with Paul's prop on it.



Tom Aberle's Phantom. 

Smoked the biplane class for 3-4 years in a row, going faster each time. Started with a three blade Elippse prop, and is now running 4 blades. 

Last year he didn't run Reno, but he's there thus year with his Elippse prop. 

Pat


Re: Jon Finley

Jim Patillo
 

Paul Lipps was a friend of mine and let me use the Ellipse prop off his Lancair for testing on my Q200.
It was proven at Reno that his props would increase speed. Don't recall the name of the race plane but it went significantly faster with Paul's prop on it.

Paul's prop was a 62/78 and was a little to much for my 120HP Q but I did pick up several knots, just didn't make enough rpm to produce the HP to go really really fast.

I wanted to have a 60/72 made but Paul wasn't making them. I asked Craig to make one for me but he wanted 3k to do it because of the complex mfg. I didn't persue it further after Paul died.

Jim Patillo
N46JP Q200


Re: Jon Finley

ryan goodman
 

No didn't find a used one. And not really thinking of carving my own. Though I'll admit the idea crossed my mind. My buddy has a cnc machine so........ That said; I think it's mostly an interest from a curiosity perspective. The experimental community tends to be full of folks who love to talk about what doesn't work, or what is common knowledge, that they themselves have picked up over the years and preach as gospel. To me that may be true often and yet still wrong under certain conditions. Because of this I think that the mentality may stifle innovations and potentially great leaps forward. So, when I come across things that show someone breaking down walls(even small or partial victories) against conventional "truths", it really piques my interest and I want to know more. I'm am engineer, so numbers and explanations why kind of calm my anxiety in this experimental world. There's a lot of builders out there who do amazing things just on the things the community "knows to be true" with little engineering knowledge at all. I think that's wonderful, but it still leaves me seeking an explanation. I don't do well pushing the "I believe" button. I need to know why. So for me, it's an exercise in finding out which parts of Paul's design broke convention and worked, and which parts just made for canon fodder. And I want to know why.......sorry for the long reply, but I felt it necessary to explain my pursuit of this. /Ryan


On Sun, Sep 10, 2017 at 8:39 AM, qplustwo@... [Q-LIST]
wrote:
 

Ryan,

Just out of curiosity, what's the interest in the Ellipse prop? As they aren't made any more, did you happen to come across a used one or are you thinking of carving your own?

-MD


Re: Fuel system anomaly video

Earnest Martin <MartinErni@...>
 

Matthew, If you can run full power in a nose up position but not level or nose down your vent may be in a low pressure area when you level off and the fuselage AOA changes. I chased that for weeks after changing the cowl exit which affected the pressure aft of the firewall. The pressure may be so low in the tanks that the fuel is changing from liquid
to gas (bubbling).
Earnest Martin
40 Glen Cove Drive
Arden NC 28704-3219
828-230-5378
martinerni@...

On Sep 10, 2017, at 11:51 AM, Paul Fisher rv7a.n18pf@... [Q-LIST] <Q-LIST@...> wrote:

http


Re: Airport Closed - Hurricane.

Jerry Marstall <jnmarstall@...>
 

Wish there was something we all could do to help.   Hang on tight.  Jerry 



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: "Mike Dwyer q2pilot@... [Q-LIST]" <Q-LIST@...>
Date: 9/10/17 10:36 AM (GMT-05:00)
To: Q-LIST@...
Subject: Re: [Q-LIST] Airport Closed - Hurricane.

 

Looks like a direct hit here in the Tampa area.  Expecting 100 mph winds for 6 hours and a very hard to estimate storm surge at the airport.  Right now some sprinkles and 30 mph wind.  9pm is when the big stuff should hit.
All hatches battened down!
Mike Q200 N3QP



On Sep 10, 2017 9:41 AM, "Kevin Sheely kjsheely1@... [Q-LIST]" <Q-LIST@...> wrote:
 

I should be ok less any tornado spinoffs. Thoughts go to Mike, he may get a direct hit and flooding.

Kevin
--------------------------------------------


On Sat, 9/9/17, logistics_engineering@... [Q-LIST] <Q-LIST@...> wrote:

Subject: Re: [Q-LIST] Airport Closed - Hurricane.
To: Q-LIST@...
Date: Saturday, September 9, 2017, 8:10 PM



 









Mike and Kevin be safe! We're all pulling for
you guys!



Jim

N46JP Q200









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Re: Fuel system anomaly video

Earnest Martin <MartinErni@...>
 

Matthew can you send a photo of you vent under the airframe that also shows its relationship to the fuselage forward of the vent. 

Earnest Martin 
40 Glen Cove Drive 
Arden NC 28704-3219
828-230-5378


On Sep 10, 2017, at 10:33 AM, Matthew Curcio mlcurcio89@... [Q-LIST] <Q-LIST@...> wrote:

 

Okay guys I got a video! Prepare to be perplexed.

So a background to this. I put a factory overhauled carb on here and that took car of the power loss on take off issues. I then found an issue where when I am going above 140mph I get a fuel starvation issue where the engine leans out and will begin knocking even. It does not do it consistently or predictably. Pulling carb heat will smooth everything out and make it run perfectly fine. 

I have also noticed this odd anomaly on the fuel system gauges. The splashing in the header glass is not continuous but the bubbling in the main gauge continued until I landed. I have to wonder if the issue above is related to this but I don't see how they could be.


Re: Fuel system anomaly video

Paul Fisher
 

I agree with Jim.  Check the float.  I had exactly the same issue many years ago.  The float wasn't letting enough fuel into the bowl at high fuel flows (high power at high speed).  I adjusted the float and haven't had a problem since.

This assumes you have already checked the fuel flow out of the header tank.  By the way, when you check the fuel flow, make sure the end of the disconnected fuel line is level with the the carburetor.  Lowering the fuel line will give you better flow numbers that are not real.

Paul Fisher
Q-200 N17PF

On Sep 10, 2017 10:38 AM, "logistics_engineering@... [Q-LIST]" <Q-LIST@...> wrote:
 

Mathew,

Adding carb heat enrichens the mixture. You might try getting up to just under fail speed while engine is still running smooth and then start pulling mixture knob slowly. If it fails prematurely the engine is running to lean which makes me suspect a leak. Do the ballon test suggested by others have suggested and leave it on the tube for a few hours.

Alternatively, is your carb adjusted properly? Float level correct? You may want to check that again.

BTW, I've had newly overhauled carburetors fail out of the box.

Jim Patillo
N46JP


Re: Fuel system anomaly video

Jim Patillo
 

Mathew,

Adding carb heat enrichens the mixture. You might try getting up to just under fail speed while engine is still running smooth and then start pulling mixture knob slowly. If it fails prematurely the engine is running to lean which makes me suspect a leak. Do the ballon test suggested by others have suggested and leave it on the tube for a few hours.

Alternatively, is your carb adjusted properly? Float level correct? You may want to check that again.

BTW, I've had newly overhauled carburetors fail out of the box.

Jim Patillo
N46JP


Re: Fuel system anomaly video

Sam Hoskins
 

Also, this could be evidence of lower pressure in the top of the header tank, when there should be higher pressure. 

Have you checked the plumbing for leaks for your ram air header tank, through the whole path? 

Sam

Sent via wireless Gizmo.

On Sep 10, 2017 10:13 AM, "Sam Hoskins" <sam.hoskins@...> wrote:
I have occasionally seen bubbles coming up like that, but not so many. It looks to me like you have some sort of an air leak coming out of the header tank or the associated fittings. 

The lower end of the sight gauge does terminate at the bottom of the header tank, right? 

Sam

Sent via wireless Gizmo.

On Sep 10, 2017 9:38 AM, "Matthew Curcio mlcurcio89@... [Q-LIST]" <Q-LIST@...> wrote:
 

Okay guys I got a video! Prepare to be perplexed.

So a background to this. I put a factory overhauled carb on here and that took car of the power loss on take off issues. I then found an issue where when I am going above 140mph I get a fuel starvation issue where the engine leans out and will begin knocking even. It does not do it consistently or predictably. Pulling carb heat will smooth everything out and make it run perfectly fine. 

I have also noticed this odd anomaly on the fuel system gauges. The splashing in the header glass is not continuous but the bubbling in the main gauge continued until I landed. I have to wonder if the issue above is related to this but I don't see how they could be.

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