|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

05-05-2013, 04:55 PM
|
 |
|
|
Join Date: Aug 2009
Location: Newport, RI
Posts: 705
|
|
Elevator stop angles ?
According to the Vans directions on measuring the up and down angles:
25-30 deg. up travel and 20-25 deg down travel.
My question: with the desire to keep the nose wheel off the runway on both take-off and landing, should the up travel be maxed out to 30 deg until stop?
My experience flying in other Vans nose wheel planes, the pilots keep the stick max aft after touch down in order to keep the nose up as long as possible. Im wondering if the extra 5 deg will make a difference.
Can the up stop (3/4" angle) be shaven or filed to allow 30 deg?
__________________
Al Girard, Newport, RI
N339AG
RV-9
Last edited by agirard7a : 05-05-2013 at 04:59 PM.
|

05-05-2013, 05:22 PM
|
|
|
|
Join Date: Mar 2005
Location: Ramona, Ca
Posts: 259
|
|
Al,
JMHO, but why not follow the manufacturer's instructions? They have been in the business for a long time and just might know what they are doing. I have been flying my 9A since 2007 and had no problem keeping the nose off the ground until ready for it to come down.
Of course, since this is an EAB aircraft, you are free to do as you wish.
__________________
Bill RV-9A Flying
FFI- Flight Lead
N99WC
Ramona, CA (KRNM)
|

05-05-2013, 07:55 PM
|
 |
|
|
Join Date: Oct 2008
Location: Utah
Posts: 8,151
|
|
Quote:
Originally Posted by agirard7a
According to the Vans directions on measuring the up and down angles:
25-30 deg. up travel and 20-25 deg down travel.
My question: with the desire to keep the nose wheel off the runway on both take-off and landing, should the up travel be maxed out to 30 deg until stop
|
No Al don't do it. Stick to the directions and published angles. There is much more to it then holding nose off the ground.
|

05-05-2013, 08:05 PM
|
 |
|
|
Join Date: Nov 2007
Location: NJ
Posts: 1,747
|
|
I think the OP IS suggesting that he will build per plans but use the higher value to ensure he can keep the majority of weight off the nose for as long as possible. If that is the case, I agree. Go with the 30*
__________________
My ATC opinion is NOT an official FAA recognized opinion, so any advice you get from me is ONLY my opinion.
Track my RV7A!!
Bought my flying -7A
Building an -8! (Fuse)
|

05-05-2013, 08:39 PM
|
|
|
|
Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
|
|
I'd interpret it the same way - that there's a tolerance band for the angle and he proposes to take the upper limit of the tolerance but not exceed Van's specification.
Can't see anything wrong with his reasoning here, but any benefit would primarily be observed at forward CG or with a bumpy runway or taxiway.
Dave
|

05-06-2013, 08:43 AM
|
 |
|
|
Join Date: Aug 2009
Location: Newport, RI
Posts: 705
|
|
30 deg.
Sorry if I was unclear. I was never planning
To exceed the manf. Recommendations but just
Thinking of going to the max angle of 30 deg.
However to do so the stop needs to be shaved or
Filed.
Has anyone done this in order to accomplish the
30 deg. travel?
__________________
Al Girard, Newport, RI
N339AG
RV-9
|

06-18-2013, 05:57 PM
|
|
|
|
Join Date: Jan 2005
Posts: 167
|
|
My elevator "up" deflection is 27.5 deg when it hits the up stop. So I think all is good there. But my elevator horn(s) also touches the F-712 bulkhead at the exact same time it touches the up stop. I definitely don't want it to touch the bulkhead. Any suggestions on what to do here? Do I need to fabricate a new up stop to allow for just 1 degree less elevator deflection so it doesn't touch the bulkhead? Or is there a better solution?
__________________
Greg English
Beaverton, OR
RV-9A QB
|

06-20-2013, 09:45 AM
|
|
|
|
Join Date: Jan 2005
Posts: 167
|
|
Bump .......... I can't believe nobody has responded. That is so unlike VAF!
Anybody have any comments regarding my elevator stop issue?
Thanks,
__________________
Greg English
Beaverton, OR
RV-9A QB
|

06-20-2013, 10:32 AM
|
 |
|
|
Join Date: Mar 2005
Location: Molalla, Oregon (KOL05)
Posts: 529
|
|
Quote:
Originally Posted by ge9a
My elevator "up" deflection is 27.5 deg when it hits the up stop. So I think all is good there. But my elevator horn(s) also touches the F-712 bulkhead at the exact same time it touches the up stop. I definitely don't want it to touch the bulkhead. Any suggestions on what to do here? Do I need to fabricate a new up stop to allow for just 1 degree less elevator deflection so it doesn't touch the bulkhead? Or is there a better solution?
|
Greg,
Just relieve or file a bit off of the aft corner of the elevator horns so that you have the necessary clearance from the F-712. Should not be an issue with strength or airworthiness. Just touch up the spot with some primer when you are done...
__________________
Joe Blank
RV-6
IO-320-D1A
Advanced Flight Systems
Van's Aircraft Inc. Technical Support-Retired
EAA Tech Counselor & Flight Advisor
www.westcoastravens.com
|

06-20-2013, 11:03 AM
|
|
|
|
Join Date: Jan 2005
Posts: 167
|
|
Thanks, Joe. I was toying with that idea ........... thanks for confirming it. I would only need to remove about 1/16" or so off the corner or each one.
__________________
Greg English
Beaverton, OR
RV-9A QB
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 06:47 AM.
|