Today's Message Index:
----------------------
1. 12:44 PM - Re: Vortex Generators (Howard Walrath)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Vortex Generators |
Subject: Re: Vortex Generators
Jerry, I bought mine from Larry Vetterman (of exhaust system fame)
who worked with several RV owners including RV-4's and RV-6's.
He holds the rights to these and, as I recall, his price was about
$400, including shipping.
Installation took me about 3 hours, with die-cut templates and very
good instructions. Net result was a 9 to 10 knot drop in my 200 HP
RV-6A's power-on-stall speed, a much more docile stall, without the
"which way is she going to tuck this time?" excitement attendant
to Van's 23-foot wing span at very high angles of attack. My normal
landing speed is now about 10-knots slower than pre-VG's.
When I went through portions of Rich Stowell's Emergency
Maneuvers/Recovery From Unusual Attitudes training
in California, he remarked that my RV's stall/spin behavior
was the best he'd ever experienced in an RV.
If the VG's cost me anything in cruise, it is not discernible and
less than 1 Knot -- as I compared before and after detailed cruise
speeds at the same power settings on longer trips. I am a real
believer in them.
Howard
> ----- Original Message -----
> From: <Jerry2DT@aol.com>
> To: <rv-list@matronics.com>
> Sent: Wednesday, December 21, 2005 12:30 PM
> Subject: RV-List: Re: Vortex Generators
>
>
>> --> RV-List message posted by: Jerry2DT@aol.com
>>
>>
>> Hi Bob,
>>
>> Do you have any test data you could share with us? I've tried to
>> find data
>> in the past on VG's, but seems to be very little.
>>
>> Jerry Cochran
>> Wilsonville, OR
>>
>> From: Oldsfolks@aol.com
>> Subject: RV-List: >Re: Vortex Generators
>>
>> --> RV-List message posted by: Oldsfolks@aol.com
>>
>> The Micro systems Vortex generators is what I have on our RV-4. I
>> got
>> them
>> from Larry Vetterman 605-745-5932 , the exhaust system man.
>> Mine are aluminun,curved to wing contour and only 1/2 " tall. I
>> love them
>> for the lower stall speed and the stable handling at minimun
>> speed. I lost
>> nothing at top speed. I painted them to match my paint.
>>
>>
>> Bob Olds RV-4 , N1191X
>> A&P , EAA Tech. Counselor
>> Charleston,Arkansas
>> Real Aviators Fly Taildraggers
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|