Today's Message Index:
----------------------
1. 05:25 AM - Re: Canopy cover (sportav8r@aol.com)
2. 05:25 AM - Glueing Canopy (Lapsley R & Sandra E. Caldwell)
3. 06:18 AM - Glueing Canopy (James H Nelson)
4. 08:28 AM - Re: Hangar Question - More Info (Jeff Dowling)
5. 09:06 AM - Re: wing walk anti-slip (Heinrich Gerhardt)
6. 02:17 PM - Re: Sealing tank inspection covers (Dan Beadle)
7. 03:06 PM - Re: Re: AD compliance documentation questions (Mike Robertson)
8. 03:57 PM - Lyc -320 E2A/E2d differences (Charles Heathco)
9. 04:30 PM - Re: Sealing tank inspection covers (Rick Galati)
10. 06:11 PM - Re: Sealing tank inspection covers (Richard Dudley)
11. 06:23 PM - Re: RV-4 for Sale (RaNDY Frost)
12. 06:25 PM - Re: wing walk anti-slip (Bobby Hester)
13. 06:39 PM - Wheel Balancing (Kyle Boatright)
14. 07:07 PM - Re: Wheel Balancing (Ron Lee)
15. 07:20 PM - Wings w/e screw-up (Fiveonepw@aol.com)
16. 07:22 PM - Re: Wheel Balancing (linn Walters)
17. 07:28 PM - Re: Wings w/e screw-up (Fiveonepw@aol.com)
18. 07:39 PM - Re: Wheel Balancing (Kyle Boatright)
19. 08:14 PM - Re: Wheel Balancing (Ron Lee)
20. 10:38 PM - Re: RV-List Digest: 30 Msgs - 05/18/06 (Ron Rosenberg)
Message 1
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| Subject: | Re: Canopy cover |
--> RV-List message posted by: sportav8r@aol.com
The cover from Bruce's Custom for the 6A weighs - are you ready - five pounds.
It's nice, but a bit heavy for those max baggage weight camping trips to OSH.
-Stormy
-----Original Message-----
From: Larry Bowen <Larry@bowenaero.com>
Sent: Thu, 18 May 2006 22:13:38 -0400
Subject: RE: RV-List: Canopy cover
--> RV-List message posted by: "Larry Bowen" <Larry@BowenAero.com>
I also have Van's cover on the RV-8. I consider it perfect for the
occasional use during overnight trips.
-
Larry Bowen
Larry@BowenAero.com
http://BowenAero.com
> -----Original Message-----
> From: Chopper 2 [mailto:mkellems@bellsouth.net]
> Sent: Thursday, May 18, 2006 9:54 PM
> To: rv-list@matronics.com
> Subject: Re: RV-List: Canopy cover
>
> --> RV-List message posted by: "Chopper 2" <mkellems@bellsouth.net>
>
> > I bought one from Van's for the -4 and then got one for the
> -3 as well
> > -- they are perfect for traveling. Grey in color - fit exact and
> > lightweight nylon (I think) with a carry bag total weight is about
> > 3lbs. About $150 I believe. Mike Kellems
> >
> > --> RV-List message posted by: PGLong@aol.com
> >
> > I want to get a light weight canopy cover to travel with
> for my RV 4.
> > Anyone have a favorite one that they would recommend?
> >
> > Pat Long
> > PGLong@aol.com
> > N120PL
> > RV4
> > Bay City, Michigan
> > 3CM
Message 2
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--> RV-List message posted by: "Lapsley R & Sandra E. Caldwell" <caldwel@ictransnet.com>
Has any one in central or South FL glued their canopy. I am about ready
to start my RV-7 canopy and I would like to check out a glue job.
Roger
Message 3
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--> RV-List message posted by: James H Nelson <rv9jim@juno.com>
Roger,
I have glued my canopy on my RV9-A. I'm just finishing the
slider with a fiberglass rear skirt. I'll be leaving the windshild
untill I get my engine mounted and wired. You can come and see it any
weekend. Let me know.
Jim Nelson
St. Petersburg
Message 4
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| Subject: | Re: Hangar Question - More Info |
--> RV-List message posted by: "Jeff Dowling" <shempdowling2@earthlink.net>
This thread is getting me depressed. I just sold my airpark lot South of
Chicago. I had my dream hangar (and house) planned and then figured out it
was way too much money. Bummer.
You'll find quite a variety of doors when you get down to that. I chose hi
lift, http://www.hi-fold.com/ due to the extra height gained without having
to add extra framing. Wilson aluminum door is probably the best out there
but its big bucks.
Good luck.
do not archive
Shemp/Jeff Dowling
RV-6A, N915JD
265 hours
Chicago/Louisville
----- Original Message -----
From: "Darrell Reiley" <lifeofreiley2003@yahoo.com>
Sent: Thursday, May 18, 2006 5:24 PM
Subject: Re: RV-List: Hangar Question - More Info
> --> RV-List message posted by: Darrell Reiley <lifeofreiley2003@yahoo.com>
>
> Tim,
>
> This is the answer to your question and a whole lot more...
>
>
> Looking for a Beautiful Custom Home with an Awesome Hanger? Here's a
> deal for you!
>
> (4) Bedrooms, (2.5) Baths (3) Car Garage (1) 40x50 Hanger(HUGE)
>
> Beautiful Rock (Native White Limestone) home with approximately
> 2580 SQ Feet of total custom home living. This home is a Texas Ranch
> Style with a large limestone fireplace and a metal roof which also
> covers large front and back porches. The kitchen has lovely
> cabinets, granite counter tops, tile floors and more... The home
> sits on an approxiamate .82 acre corner lot and has a fenced
> backyard. The Hanger is fully insulated, includes a 40 X 11 Hydro-
> swing door which opens to a 50x65 cement apron with taxiway Bravo
> cul-de-sac at your rear property line. This is a Private and Gated
> Airpark Community. The air strip has beautiful grass and measures
> 2500 x 150 with runway and taxiway lights. Restrictions state YOU
> MUST BE A LICENSED PILOT TO PURCHASE IN THIS COMMUNITY. For More
> information email: lifeofreiley@austin.rr.com
>
> Offered at $395,000.00 - This home will not last at this price!
>
>
> "Do Not Archive"
>
> Darrell Reiley
>
> RV7A "Reiley Rocket"
> N622DR Reserved
>
>
> ---------------------------------
> Ring'em or ping'em. Make PC-to-phone calls as low as 1/min with Yahoo!
> Messenger with Voice.
>
>
>
Message 5
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| Subject: | Re: wing walk anti-slip |
--> RV-List message posted by: "Heinrich Gerhardt" <hgerhardt@earthlink.net>
Thanks! That's just what I'm looking for.
Heinrich Gerhardt
RV-6 ready for paint
>In a message dated 05/18/2006 8:34:03 PM Central Daylight Time,
>hgerhardt@earthlink.net writes:
>wing walk anti-slip?
>Just as a suggestion, here's what I did on my plane and it has really
>worked out nicely- 1 year and 4 months since application and it still looks
& >works great-
http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5276
Thanks, George- good tip!
>From The PossumWorks in TN
Mark
Message 6
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| Subject: | Sealing tank inspection covers |
--> RV-List message posted by: "Dan Beadle" <dan.beadle@inclinesoftworks.com>
Did you use light or medium weight Titeseal?
Are there other areas that make sense to use this product?
Thanks
Dan
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Richard Dudley
Sent: Saturday, March 11, 2006 3:04 PM
Subject: RV-List: Sealing tank inspection covers
--> RV-List message posted by: Richard Dudley <rhdudley@att.net>
FWIW
If you haven't yet sealed your inspection plates onto your tanks or
don't like using Pro Seal on your inspection plates, the following may
be of interest to you.
I originally sealed my tanks about four years ago. I've been flying for
a year with about 75 hours on my RV-6A.
I used the cork gaskets that were supplied with the wing kit. In the
assembly process, I coated the seal area of inboard rib surface with
Titeseal (that I purchased from ACS) and placed the cork gasket on the
coated surface. I then coated inside mating surface of the inspection
plate with the Titeseal and placed it on the gasket. I then inserted the
screws and torqued them a moderate amount that resulted in a small
compression of the gasket and extrusion of the Titeseal from the edges
and around the screws. The original pressure test of the tanks showed no
leaks around the inspection plate. After assembling the plane and
filling the tanks, there were no fuel leaks around the plates.
During the last few days, I removed the tanks to do the recent Service
Bulletin. After removing the screws from the inspection plates, they
lifted off without any effort. I then cleaned the old Tite-Seal from
both the plate and the inboard rib with acetone. After doing the work
for the SB, I then repeated the above procedures of Titeseal coating and
assembly. The tanks are re-installed and filled with fuel with no leaks.
Regards,
Richard Dudley
Message 7
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| Subject: | Re: AD compliance documentation questions |
--> RV-List message posted by: "Mike Robertson" <mrobert569@hotmail.com>
George,
While I certainly support your opinion you do have something slightly wrong
in your opening statement where you say that nothing needs to be entered in
your logbook except the yearly condition inspection.
If you will look at your aircraft's Operating Limitations the very first
paragraph should have something to the sound that you must obey the
operating rules of FAR 91 and all additional limitations herein.
FAR 91.407(a) states that "no person may opeate any aircraft that has
undergone maintenance.....unless(1) approved for return to service by an
authorized person (in this case the owner is acceptable); and (2) The
maintenance record entry required by 43.9 or 43.11, as applicable, of this
chapter has been made.
Logbook entries for any maintenance are, therefore, required. Sorry. But
compliance with AD are optional.
Mike Robertson
>From: <gmcjetpilot@yahoo.com>
>To: rv-list@matronics.com
>Subject: RV-List: Re: AD compliance documentation questions
>Date: Wed, 17 May 2006 03:51:02 -0700 (PDT)
>
>--> RV-List message posted by: <gmcjetpilot@yahoo.com>
>
>We are experimental amateur built and don't have to meet any AD or is there
>any log book entry or maintenance regulation. All we have to do is have a
>condition inspection sign off in the last 12 months. Bottom line we have NO
>regulations and our aircraft are not certified or need to meet any
>particular regulation (unless noted in the operating limitations).
>
> However from a common sense stand point and what I do is comply with
>AD's on my engine. I was on the fence about changing the prop Gov oil line
>from aluminum to a stainless steel part. If the aluminum is properly
>supported, chance of failure is nil (by the fact for many decades, on many
>planes, flown many hours with no problem). I ended up changing it because
>the parts where fairly cheap.
>
> Ramp checks? Who has been ramped checked? I get checked about once a
>year, but that is airline flying. In private flying or as a corporate or
>CFI pilot instructor, never in 20 years of flying. The chance is your more
>likely to get ramped from a law officer because you just did a buzz job or
>wants to know if you paied the state sales / use tax on the plane.
>
> We have great freedom lets not goof it up by doing dumb things. Right
>now the FAA has a healthy we don't need to know and don't want to know, you
>are experimental, RIGHT wink wink nod nod. Fact is the FAA has a hard
>enough time doing their other jobs. This may be a hit on our collective
>ego's, but flying little planes that mostly seat two people is not a
>priority. However as HOMEBUILTS have progressed into 6 place pressurized
>turboprops that can fly in the flight levels (well above FL180). The FAA
>has a hard time ignoring this since they are mixing it up with the airline
>traffic. I predict (it already has happened) there will be two classes of
>amateur homebuilt experimental, small and large (turbine).
>
> I hope we can stay off the Fed's radar and continue to enjoy minimal
>government oversight so we can continue to exercise judgment and self
>imposed (common sense) practices. I think by and large most homebuilts are
>very airworthy and flown safely. However if this changes things will
>change. Just do the prudent thing, but don't be paranoid. No one really
>cares about your AD status (at this time). It is experimental RIGHT?
>
> George
>
> __________________________________________________
>
>
Message 8
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| Subject: | Lyc -320 E2A/E2d differences |
--> RV-List message posted by: "Charles Heathco" <cheathco@cox.net>
I have gotten conflickting info re differences, Mags being one, and Carb
being the other so far. Can anyone say if I can for sure change my E2A
for an E2D without a problem? Charlie Heathco Send email direct is good
cheathco@cox.net
Message 9
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| Subject: | Re: Sealing tank inspection covers |
--> RV-List message posted by: "Rick Galati" <rick6a@yahoo.com>
dan.beadle(at)inclinesoft wrote:
> Did you use light or medium weight Titeseal? Are there other areas that make
sense to use this product?
> Thanks Dan--
I too can echo Richard Dudley's experience and leak free success using Titeseal.
In my case, I used MEDIUM WEIGHT Titeseal with the cork gaskets. At the time,
I merely followed a suggestion offered in an Orndorff construction video.
In the video, George cautioned about the potential consequences of using proseal
on those fuel tank access covers. I was much inclined to agree since I worked
with proseal daily for too many years and know well...even intimately...how
tenacious its properties can be. Even in a highly skilled production environment
there sometimes arises a need to rework an assembly after the proseal has
set up and it is never fun to separate the parts, clean and prepare anew.
I have not used Titeseal in any other application. A pity they don't sell the
stuff in a much smaller container appropriately sized for the RV builder.
Rick Galati RV-6A "Darla" 126 hours
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=35486#35486
Message 10
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| Subject: | Re: Sealing tank inspection covers |
--> RV-List message posted by: Richard Dudley <rhdudley1@bellsouth.net>
Dan,
To be sure of the answer to your question, I'll have to check my Tite
Seal can at my hangar. I don't remember which I used. I plan to go to
the hangar tomorrow and I'll check and let you know.
I haven't used the Tite Seal anywhere else on the plane. For pipe
threads I have used Seal Lube, another material that is immune to fuel
and oil.
Regards,
Richard Dudley
Dan Beadle wrote:
>--> RV-List message posted by: "Dan Beadle" <dan.beadle@inclinesoftworks.com>
>
>Did you use light or medium weight Titeseal?
>
>Are there other areas that make sense to use this product?
>
>Thanks
>Dan
>
>-----Original Message-----
>From: owner-rv-list-server@matronics.com
>[mailto:owner-rv-list-server@matronics.com] On Behalf Of Richard Dudley
>Sent: Saturday, March 11, 2006 3:04 PM
>To: rv-list@matronics.com
>Subject: RV-List: Sealing tank inspection covers
>
>--> RV-List message posted by: Richard Dudley <rhdudley@att.net>
>
>FWIW
>
>If you haven't yet sealed your inspection plates onto your tanks or
>don't like using Pro Seal on your inspection plates, the following may
>be of interest to you.
>
>I originally sealed my tanks about four years ago. I've been flying for
>a year with about 75 hours on my RV-6A.
>I used the cork gaskets that were supplied with the wing kit. In the
>assembly process, I coated the seal area of inboard rib surface with
>Titeseal (that I purchased from ACS) and placed the cork gasket on the
>coated surface. I then coated inside mating surface of the inspection
>plate with the Titeseal and placed it on the gasket. I then inserted the
>screws and torqued them a moderate amount that resulted in a small
>compression of the gasket and extrusion of the Titeseal from the edges
>and around the screws. The original pressure test of the tanks showed no
>leaks around the inspection plate. After assembling the plane and
>filling the tanks, there were no fuel leaks around the plates.
>
>During the last few days, I removed the tanks to do the recent Service
>Bulletin. After removing the screws from the inspection plates, they
>lifted off without any effort. I then cleaned the old Tite-Seal from
>both the plate and the inboard rib with acetone. After doing the work
>for the SB, I then repeated the above procedures of Titeseal coating and
>assembly. The tanks are re-installed and filled with fuel with no leaks.
>
>Regards,
>
>Richard Dudley
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Message 11
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--> RV-List message posted by: "RaNDY Frost" <jamesrfrost@hotmail.com>
Hey: I'm interested in both planes for different reasons.
Randy Frost
678-859-1861
>From: "Jim Cimino" <jcimino@echoes.net>
>To: "RV-LIST" <rv-list@matronics.com>
>Subject: RV-List: RV-4 for Sale
>Date: Fri, 12 May 2006 16:51:08 -0400
>
>--> RV-List message posted by: "Jim Cimino" <jcimino@echoes.net>
>
>I am listing this for a friend of mine who has an RV-4 for sale. It has
>an O-320-D1A with 310 TTAE bought new from Van's. It is VFR and is in
>great shape. This is a very nice RV-4 that was built by a close friend
>of mine who is a retired sheet metal fabricator. This was the 3rd RV
>that he built and the workmanship is flawless. It is yellow and red.
>My friend is asking $45,000 for it. If you are interested or have any
>other questions you can contact Richard at rblakesl@ptd.net . Or I will
>try to answer any questions I can for you.
>Thanks,
>Jim
>
>Jim Cimino
>N7TL
>RV-8 S/N 80039
>200+ Hours
>http://www.geocities.com/jcimino.geo/
>
>
Message 12
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| Subject: | Re: wing walk anti-slip |
--> RV-List message posted by: Bobby Hester <bobbyhester@charter.net>
Hey hot dog you goin to fly up tomarrow for our wings weekend?
I got another toy for the panel :-)
http://webpages.charter.net/bobbyhester/FWFfinishing.htm
Please update your address book with my new email address:
bobbyhester@charter.net
Surfing the Web, Highspeed now, from Hopkinsville, KY
Visit my web site at: http://www.geocities.com/hester-hoptown/RVSite/
RV7A Slowbuild wings-QB Fuse-XPO360 engine :-)
Fiveonepw@aol.com wrote:
>--> RV-List message posted by: Fiveonepw@aol.com
>
>
>>From The PossumWorks in TN
>Mark
>
>
Message 13
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--> RV-List message posted by: "Kyle Boatright" <kboatright1@comcast.net>
After another couple of landings this week with noticable shimmy, I've
decided I'm tired enough of this problem to actually do something about
it.
Here are the four issues I usally see when the subject of shimmy comes
up:
- Wheelpant balance. I balanced 'em before the first flight, so I
have no idea if the balancing helped or hurt.
- Gear leg stiffeners. Don't have 'em.
- Wheel/tire balance. I have noticed that the gear seems more
shimmy resistant on new tires. This may be a roundness or a balance
issue.
- Air pressure - I keep it at 22-24 lbs, so reducing it more isn't
practical.
My plan is to:
1) Balance the wheels and see if this helps.
2) If not...New tires (balanced). This should take roundness out of
the equation.
3) If that doesn't work, I guess I'll pull off the gear leg fairings
and add wood stiffeners.
4) If *that* doesn't work, I'll remove the wheel pants and related
hardware. If that helps, I'll try a new set of wheel pants without
balancing 'em.
Anyone got a better plan? I'm all ears on this one.
By the way, how do you balance aircraft wheels? I don't remember any
suggestions on this.
Thanks in advance,
KB
Message 14
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| Subject: | Re: Wheel Balancing |
--> RV-List message posted by: Ron Lee <ronlee@pcisys.net>
I already posted about this a few months ago.
Check for tire roundness and then balance the wheel/tire
assembly. Also applies to nosegear.
My A&P has a balancing tool. Balance with motorcycle lead weights.
Previous post may have been Nose wheel shimmy topic.
Ron Lee
Message 15
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| Subject: | Wings w/e screw-up |
--> RV-List message posted by: Fiveonepw@aol.com
Oh shit- is that tomorrow! Damn- I'm flying down to Orlando to talk to a guy
about building a -7A for him (do ya hate me?). Will update address- hmmm-
that's odd- I already got ya as bobbyhester@charter.net (?)
I remember you going over your engine/prop decisions- what did ya wind up
with & why? I also know another guy named Dan Garrett who is building a -7. He
is agonizing over what to buy for his panel- wants "occasional" IFR
capability. Looking at your panel you have the Dynon, Garmin audio panel, xpndr,
SL30(?) and 296(?) Do you feel this is enough for his requirements- in other words,
would you think just adding a 430 would make this good to go for his needs?
Maybe even lose the SL30 if 430 was on board. Nice panel, by the way!
so when ya gonna fire the puppy up? Brooks & I need more Middle TN formation
flyers- HURRY! You heard Tommy Walker has is Phase I done? Saw him at MBT
for b'fast Sat & his -6A REALLY came out nice!!
Take 'er e-z & gitrdun!
Mark
Message 16
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| Subject: | Re: Wheel Balancing |
--> RV-List message posted by: linn Walters <pitts_pilot@bellsouth.net>
Kyle, you need to define shimmy, and where it's from. I think that
technically, the nosewheel (or tailwheel) can have shimmy, but the mains
cannot. Shimmy is the rapid back/forth movement of a wheel located
behind a pivot point. Like a shopping cart. Another vibration can come
from the Whitman - style main gear, which I call 'walking' for lack of a
better term.
OK, what to do about shimmy. The pivot axis needs to be as vertical as
possible. As the top of the pivot axis moves forward, the more prone to
shimmy the wheel becomes. The second thing is the drag on the nosewheel
fork. My Grumman has a castering nosewheel, and shimmy prevention is
due to the pressure on the belleville washers. Belleville washers are
cupped and you can nest and stack them for more drag as the spindle nut
is tightened.
As for the 'walking' of the mains .... well, the only knowledge I have
is what's been on the list .... stiffeners on the gear legs.
Personally, I hate the Whitman gear. Watching the wheels lurch fore
and aft is just plain painful from an aesthetic point of view. Just my
opinion. I'd much rather have a spring gear on my -10. Blasphemy, I
know, but I'm going to consider it. Call it an experiment. But I
digress. I can see 'walking' occurring from bent discs and/or dragging
brakes or even bad bearings ...... but I don't think tire balance or
fairings contributes to either 'malfunction'.
Here's what I'd do. Go fly. Just after liftoff, see if the vibration
goes away. If not, stomp on the brakes and see if it goes away. If it
goes away, then you have an unbalanced tire on the mains. That leaves
the nosewheel. Have someone watch you as you takeoff and land .....
they'll be able to spot the shimmy or the walking. Work from there.
As for balancing, jack the tire off the ground and loosen the axle nut a
little. Spin the tire a couple of times and see if one place
consistently ends up on the bottom. Aviation wheel weights are stick-on
...... cut an inch or so and stick it on the inside of the rim on the
high side. Trim or add weight until the tire stops on a random spot.
That's all there is to it.
Linn
do not archive
Kyle Boatright wrote:
>--> RV-List message posted by: "Kyle Boatright" <kboatright1@comcast.net>
>
>After another couple of landings this week with noticable shimmy, I've
>decided I'm tired enough of this problem to actually do something about
>it.
>
>Here are the four issues I usally see when the subject of shimmy comes
>up:
>
> - Wheelpant balance. I balanced 'em before the first flight, so I
>have no idea if the balancing helped or hurt.
> - Gear leg stiffeners. Don't have 'em.
> - Wheel/tire balance. I have noticed that the gear seems more
>shimmy resistant on new tires. This may be a roundness or a balance
>issue.
> - Air pressure - I keep it at 22-24 lbs, so reducing it more isn't
>practical.
>
>My plan is to:
>
> 1) Balance the wheels and see if this helps.
> 2) If not...New tires (balanced). This should take roundness out of
>the equation.
> 3) If that doesn't work, I guess I'll pull off the gear leg fairings
>and add wood stiffeners.
> 4) If *that* doesn't work, I'll remove the wheel pants and related
>hardware. If that helps, I'll try a new set of wheel pants without
>balancing 'em.
>
>Anyone got a better plan? I'm all ears on this one.
>
>By the way, how do you balance aircraft wheels? I don't remember any
>suggestions on this.
>
>Thanks in advance,
>
>KB
>
>
>
>
>
>
>
>
>
Message 17
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| Subject: | Re: Wings w/e screw-up |
--> RV-List message posted by: Fiveonepw@aol.com
OK- humblest apologies for innuendo, gratuitous profanity and outright lies-
will try to do better, folks and pay more attention to replys & DO NOT ARCHIVE
!!!!
(Wait'll I git aholt of that guy in KY!!!!!)
Mark
Message 18
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| Subject: | Re: Wheel Balancing |
--> RV-List message posted by: "Kyle Boatright" <kboatright1@comcast.net>
----- Original Message -----
From: "linn Walters" <pitts_pilot@bellsouth.net>
Sent: Friday, May 19, 2006 10:23 PM
Subject: Re: RV-List: Wheel Balancing
> --> RV-List message posted by: linn Walters <pitts_pilot@bellsouth.net>
>
> Kyle, you need to define shimmy, and where it's from. I think that
> technically, the nosewheel (or tailwheel) can have shimmy, but the mains
> cannot. Shimmy is the rapid back/forth movement of a wheel located
> behind a pivot point. Like a shopping cart. Another vibration can come
> from the Whitman - style main gear, which I call 'walking' for lack of a
> better term.
My issue is the mains on a tailwheel -6. You can get several different
movements on the mains. You can get a fore/aft walking thing going, but the
gear can also get into a wiggle about the vertical axis where the wheel goes
from toe-in to toe-out. Beyond that, the gear can also flex in and out.
There are plenty of movement options to go around! The gear leg stiffeners
probably best address the fore/aft movement, but that's a guess.
The only times I get a shimmy (or whatever we want to define it as) is on
landing or in seriously high speed taxi. Obviously, I don't know the exact
speed where it begins, but I'd guess 30 mph +/-. Once it starts, the shimmy
will continue down to almost walking speed. It is strange that I don't have
this problem accelerating for takeoff, but I don't...
>
> OK, what to do about shimmy. The pivot axis needs to be as vertical as
> possible. As the top of the pivot axis moves forward, the more prone to
> shimmy the wheel becomes. The second thing is the drag on the nosewheel
> fork. My Grumman has a castering nosewheel, and shimmy prevention is
> due to the pressure on the belleville washers. Belleville washers are
> cupped and you can nest and stack them for more drag as the spindle nut
> is tightened.
>
> As for the 'walking' of the mains .... well, the only knowledge I have
> is what's been on the list .... stiffeners on the gear legs.
> Personally, I hate the Whitman gear. Watching the wheels lurch fore
> and aft is just plain painful from an aesthetic point of view. Just my
> opinion. I'd much rather have a spring gear on my -10. Blasphemy, I
> know, but I'm going to consider it. Call it an experiment. But I
> digress. I can see 'walking' occurring from bent discs and/or dragging
> brakes or even bad bearings ...... but I don't think tire balance or
> fairings contributes to either 'malfunction'.
>
> Here's what I'd do. Go fly. Just after liftoff, see if the vibration
> goes away. If not, stomp on the brakes and see if it goes away. If it
> goes away, then you have an unbalanced tire on the mains. That leaves
> the nosewheel. Have someone watch you as you takeoff and land .....
> they'll be able to spot the shimmy or the walking. Work from there.
>
> As for balancing, jack the tire off the ground and loosen the axle nut a
> little. Spin the tire a couple of times and see if one place
> consistently ends up on the bottom. Aviation wheel weights are stick-on
> ...... cut an inch or so and stick it on the inside of the rim on the
> high side. Trim or add weight until the tire stops on a random spot.
> That's all there is to it.
> Linn
Thanks for the response...
KB
Message 19
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| Subject: | Re: Wheel Balancing |
--> RV-List message posted by: Ron Lee <ronlee@pcisys.net>
Kyle, here was the first post: http://tinyurl.com/zqt2r
And this: http://tinyurl.com/ku5uh
To check for out of round just spin it with a stick or suitable object
close to the tire (front or back). Look for even distance between the
stick and the tire as it rotates. It is obvious if significantly out of round.
Ron
Message 20
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| Subject: | RE: RV-List Digest: 30 Msgs - 05/18/06 |
--> RV-List message posted by: "Ron Rosenberg" <ronr@medicalpmrg.com>
John:
I think you'll find that it's the DA42, the TwinStar that has the 44'
wing span. The DA40 Star - the single - is in the high 30's.
Ron Rosenberg, P.A., M.P.H.
Practice Management Resource Group, Inc.
Corporate Phone - (708) 633-6417
Direct (Mobile) - (415) 250-2578
www.medicalpmrg.com
-----Original Message-----
________________________________ Message 13
____________________________________
Time: 02:19:29 PM PST US
From: "John Jessen" <jjessen@rcn.com>
Subject: RE: RV-List: Hangar Info
--> RV-List message posted by: "John Jessen" <jjessen@rcn.com>
Very good point. Check out the wing span of a DA-40, as well. They are
44
feet, if I have that correct. Not going to work with my 42 foot hanger.
Also, keep in mind that the door frame often sticks out a foot on either
side, so the actual door opening can be 2 feet smaller than the box
itself.
John Jessen
40328 (Tailcone)
do not archive
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