vortex generators

russ murri · Post by **russ murri** » Mon Dec 02, 2002 3:52 am

I am in the process of obtaining a 337 for these little guys on a ragwing. I have been in contact with my buddy at the FAA. What I need is some info on the A model wing . I do not have any A models close to my home town and the ceiling is 6'' or less ,can't fly to one so I need help. Can someone take some measurements for the width and length, of the flaps,ailerons, and overall width of the wing,say at the attaching points. is the A model wing straight across the leading edge? The reason for this is that there is an STC for the A model but no ragwing. The airfoil NACA # 2412 is the same for the A model and ragwing and the Cessna 140 according to the Cessna tec rep ( also a 170 owner named Josh) nice guy too. Back to my FAA buddy,we"ll call him John , that is his name, I new that the 140 and the ragwing wing were nearly the same and according to the cessna tec rep they do use some of the same ribs but John was concerned about the weight differance between the 140/170. After talking with the tec rep Iam thinking the A model is a better bet. There are two vortex generator co. and neither one did the pour little ragwing, just wasn't enough made they said. If I can show the FAA the two planes the A model and the ragwing are the same or close,,,, maybe I to can be vor-ta-sized////// not only will I have an attitude (180 gear legs) but I'll be s l o w ,,,, Won't that be Cool? Russ

blueldr · Post by **blueldr** » Mon Dec 02, 2002 5:23 am

If you're going to buy a set of VGs for a Cessna wing, you better ask for a money back guarantee if they don't make any improvement. The ones I've seen tried on a C-170B did "Zilch" for about $1450. They did provide slightly better elevator control at touchdown on landing.

russ murri · Post by **russ murri** » Mon Dec 02, 2002 5:49 am

blueldr :
do you now what brand they were? micro or boundry layer? Russ

zero.one.victor · Post by **zero.one.victor** » Mon Dec 02, 2002 6:18 am

Russ,from your location I'm guessing that you're talking about installing BLR VG's,sold by Cub Crafters there in Yakima?
I have a friend at my airport that just bought an A model,I'll see if I can get the measurements for you. What measurement s do you need? Please elaborate.
You are aware that the A wing is tapered-chord,just like the B model? I think that the A & B wings are the same except for the flaps (and the dihedral).

Eric

funseventy · Post by **funseventy** » Tue Dec 03, 2002 9:10 pm

I have flown several airplanes that had VG's. My feeling is that they do something for the airplane, but it is small. The people that really brag about VG's come from two different camps. 1) They have to brag because they cost 1450 dollars. 2) The VG's gave them the confidence to slow down to a pace that the 170 could already fly at.

Since they don't do that much, you should only use the location that was specified for that airfoil (140). The weight difference does not change the critical angle of attack for that airfoil. Any other placement will be wrong and the performance could be reduced. VG's can hurt the airflow as well.

No matter what, you will look COOL!! And sometimes that is all that matters!!!

On my 180 I had VG's and I looked cool, now I own a 170B and that is cool enough!!! Kelly

Post by **GAHorn** » Tue Dec 03, 2002 10:56 pm

This airplane will already fly so slow you can land it in places too short to ever fly it back out of, no matter which engine you have.
If VG's are installed, the airplane becomes legally unairworthy if only a few of them are knocked/fall off.
They cost a fortune-per-mile-per-hour and make the airplane look ugly and hard to wash without damaging them.
My fren' from Looeasyana tole me "They are like knobs on a Nawlin's rubber----- They might feel good to put 'em on and might benefit the person who sold them, but compared to being naked they don't do much for you."

ak2711c · Post by **ak2711c** » Wed Dec 04, 2002 6:54 am

Spruce Aircraft now sells the Micro VG's for a bit cheaper, $1350. Still alot of money! I think I'll wait to try them out on somebody elses plane before I splurge.
Shawn

flyguy · Post by **flyguy** » Wed Dec 04, 2002 2:55 pm

OKAY GAY HORN IMA GONNA TELL YUH AGIN, STIK-UPS ARE WHERE FISH HIDE AND KNOBBY RUBBERS IS WHUT YUH PLUG HOLES IN YER PIROUG WITH. AS FER SUM GUY WHO SELLS EM FER EENY THANG ELSE - - USE EM ON HIM.

NOW I WUSNT GONNA POST ON THIS HYEAR DISCUSSION BUT SINCE IMA HYEAR I WILL. STIKIN LITTLE TIN THANGS ON SAGGY RAGS UV A RAGWING TO GO SLOWER IS PROBLY LIKE SWIMMIN UP STREAM WIT BOOTS ON. AN ANUTHER THANG, I SPECT THAT A 'A'-WING IS BOUT AS NEAR A-LIKE A RAGWING AS A GATOR IS TO A SWAMP RATTLER. FER A 1000 BUCKS ILL GIT YU SOME GATORS

russ murri · Post by **russ murri** » Thu Dec 05, 2002 2:46 am

what the hell is a piroug.... it aint in my dictionary Russ

flyguy · Post by **flyguy** » Thu Dec 05, 2002 3:02 am

I CIN TELL YU AINT BIN TO FUR SOUTH. I WIZ TRYIN TO BE SAFISTKATED AND SPEL IT RITE. ITS COMMUN NAME IS PE-RO AN HITS A BOTE THAT ONLY HOLES ONE OR TOO IFF IT IS A PE-E-RO. HOW MANY GATORS DIJA WANT.

Post by **GAHorn** » Thu Dec 05, 2002 3:06 am

Pirogue: Pronounced "pee-row": 1) A small flat bottom dugout or canoe. 2) A spicy sandwich made of crayfish (aka: crawdads/mud-bugs) and/or oysters.

flyguy · Post by **flyguy** » Thu Dec 05, 2002 3:13 am

Hey man we better go to bed! It shows that we are posting at 3:00AM

N1478D · Post by **N1478D** » Thu Dec 05, 2002 3:34 am

gahorn wrote:Pirogue: Pronounced "pee-row": 1) A small flat bottom dugout or canoe. 2) A spicy sandwich made of crayfish (aka: crawdads/mud-bugs) and/or oysters.

quote flyguy "Hey man we better go to bed! It shows that we are posting at 3:00AM"

. . . . .

flyguy · Post by **flyguy** » Thu Dec 05, 2002 3:46 am

QWOTING HORN:
My fren' from Looeasyana tole me "They are like knobs on a Nawlin's rubber----- They might feel good to put 'em on and might benefit the person who sold them, but compared to being naked they don't do much for you."

SEE JOE. I DINT START THIS. OLE GEORGE HE JES CONTNULY GITS THANGS RONG. IMMA GONNA HAF TU STRATEN IM OUT SUM DAY SOON AGIN. I TRIED TO TOLE HIM LOTS UV STUFF AN THAS IS ALL WHUT HE REE MEMBERS? SEE HE THINKS THU NOBS GO ONNA INSIDE!

AN U BETTER GO TO BED TOO. CURL UP BY THAT FAR AN SEE HOW MUCH SLEEP U GIT BETWEEN 3:34 AM AN WHEN I CALL U AT 6!

russ murri · Post by **russ murri** » Thu Dec 05, 2002 4:13 am

I have experianced southern hospitality (ie) the awful waffel house on the trip I made to Cartesvile Georgia to purchase my ragwing and fly her home.The first problem I had after I got to the rockies was my little 170 started shaking ,never been that high in her whole life. It has been a battle to teach her to fly above 1500'msl.....One of the reasons for the vgs is in hopes that the control surfaces will respond better and yes have a saftey margine at slow speed. I do live on a lake ,how well do those gaters like the cold and snow? got some neighbors that might work out just fine as dinner,if you know mean. Russ

The International Cessna^® 170 Association