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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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 Posted: Wed Dec 06, 2006 9:17 pm Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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I understand that most flying builders have left the wheel pants & leg
fairings off during their Stage 1. And some have not installed them
until after flying. It appears that the alignment of these can be
critical to the aircrafts top speed and overall handling. The plans call
for raising the aircraft off the ground to facilitate the install. If
this is the case, wouldn't it be better to install the pants & leg
fairings BEFORE the engine gets hung? Would it help to ensure a better
alignment? Does it make it easier / less time? From Tim' site it's
obvious that they can be added later, for those of you who added them
later, if you had it to do over again would you do them earlier? What
about the other way around (those who did earlier)?
My engine ships tomorrow, and I'm putting it on it's gear tomorrow ,
debating whether to hang the engine when it arrives next week, or let it
sit, while I do the Pants and Fairings.
THANKS
Deems Davis # 406
Finishing - ( A Misnomer ! )
http://deemsrv10.com/
Want to see some pics of MY BPE IO-540-X w/ CAS?
http://deemsrv10.com/album/My%20BPE%20IO-540-X%20w%20CAS/index.html
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mritter509(at)msn.com
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| Posted: Thu Dec 07, 2006 3:45 am Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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I did the gear leg and wheel fairings after flying off Phase 1 hours (40).
May help engine break in having more drag. I used the wing tie down points
to jack up the plane to get the weight off the main gear. After
considerable pain and agony measuring and re-measuring alignment I have come
to the conclusion that attaining perfect alignment is more a matter of luck
than skill.
Its not a fun job for an old guy crawling under the wing time after time
after time and one that's easy to put off once you are flying. If you are
not chomping at the bit to fly and not worried about engine break-in it
would be considerably easier to do the main gear before installing the
wings. I believe you will need the engine and cowling on for the front gear
fairings.
I"ll be installing rudder trim when the plane gets out of the paint shop
(half a ball out to the right). Wish I had done it before painting - to
many other projects and didn't want to lose my position at the paint shop.
Mark (N410MR)
| Quote: | From: Deems Davis <deemsdavis(at)cox.net>
Reply-To: rv10-list(at)matronics.com
To: rv10-list(at)matronics.com
Subject: Deperately seeking opinions - (well maybe urgently
seeking )
Date: Wed, 06 Dec 2006 22:17:17 -0700
I understand that most flying builders have left the wheel pants & leg
fairings off during their Stage 1. And some have not installed them until
after flying. It appears that the alignment of these can be critical to the
aircrafts top speed and overall handling. The plans call for raising the
aircraft off the ground to facilitate the install. If this is the case,
wouldn't it be better to install the pants & leg fairings BEFORE the engine
gets hung? Would it help to ensure a better alignment? Does it make it
easier / less time? From Tim' site it's obvious that they can be added
later, for those of you who added them later, if you had it to do over
again would you do them earlier? What about the other way around (those who
did earlier)?
My engine ships tomorrow, and I'm putting it on it's gear tomorrow ,
debating whether to hang the engine when it arrives next week, or let it
sit, while I do the Pants and Fairings.
THANKS
Deems Davis # 406
Finishing - ( A Misnomer ! )
http://deemsrv10.com/
Want to see some pics of MY BPE IO-540-X w/ CAS?
http://deemsrv10.com/album/My%20BPE%20IO-540-X%20w%20CAS/index.html
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wayne.e(at)grandecom.net
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| Posted: Thu Dec 07, 2006 4:34 am Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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I've got my fairings installed and I would definitely put them on before you install the wings. The engine being mounted, mine is, wasn't really an issue for me. Your going to love this job, it was a little work to get this done or at least it was for me.
I've attached a couple of picture so you can see how much easier it is to get at the main gear fairings without having to crawl under the wing.
Wayne Edgerton #40336
do not archive
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jesse(at)itecusa.org
Guest
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| Posted: Thu Dec 07, 2006 6:12 am Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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I think the best way would be to fit them prior and then leave them off for
the fly-off, whether leaving the brackets on or off (up to you). It is good
to be able to check pressure regularly and monitor everything during the
first 25-40 hours, and taking the pants off to do that can be a pain. Also,
it slows you down quite a bit (as much as 18Kts in our experience), so you
don't reach that outer radius ring as quickly, which helps a little bit when
testing systems and stuff.
If you are doing it without the wings on, then without the engine makes
sense. You should be able to install the nose fairing without the cowl.
The cowl will need to be trimmed around it anyway. After the wings and
engine, just jacking up on the tie-down supports should get the wheels high
enough to work on the fairings. Since you will need to be able to jack it
up later anyway with the engine on, then I don't see any difference. It
certainly is easier without the wings on for the mains and without the
engine for the nose gear to work around that area.
Overall, I would say if you have time it is good to get them fit before
flying because it will be a pain to take the time once you are flying,
because they can take a lot of time to work with. Also, you can paint them
when you are painting everything else (if you paint before you fly, that is,
which I recommend), which can save some hastle.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
W: 352-465-4545
C: 352-427-0285
--
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mike(at)learningplanet.co
Guest
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| Posted: Fri Dec 08, 2006 11:41 pm Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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Hi Deems,
Do yourself a favor and do the wheel pants and gear leg fairings now.
You can leave them off the plane for the first couple of flights if
you wish.
On the RV-9A, I was one of those who just wanted to "get into the
air", so I chose to do my undercarriage later. It may just be a
mental thing, but once the plane is flying it is very difficult to
spend the 40 hours (or whatever it is) to work on fiberglass. Also,
as you have pointed out, it is a process that requires some level of
accuracy, so it's good if you can align everything in advance.
Regards,
Mike Schipper
#40576 - Wings - www.rvten.com
RV-9A - N63MS - Flying
On Dec 6, 2006, at 11:17 PM, Deems Davis wrote:
| Quote: |
I understand that most flying builders have left the wheel pants &
leg fairings off during their Stage 1. And some have not installed
them until after flying. It appears that the alignment of these can
be critical to the aircrafts top speed and overall handling. The
plans call for raising the aircraft off the ground to facilitate
the install. If this is the case, wouldn't it be better to install
the pants & leg fairings BEFORE the engine gets hung? Would it help
to ensure a better alignment? Does it make it easier / less time?
From Tim' site it's obvious that they can be added later, for those
of you who added them later, if you had it to do over again would
you do them earlier? What about the other way around (those who did
earlier)?
My engine ships tomorrow, and I'm putting it on it's gear
tomorrow , debating whether to hang the engine when it arrives next
week, or let it sit, while I do the Pants and Fairings.
THANKS
Deems Davis # 406
Finishing - ( A Misnomer ! )
http://deemsrv10.com/
Want to see some pics of MY BPE IO-540-X w/ CAS?
http://deemsrv10.com/album/My%20BPE%20IO-540-X%20w%20CAS/index.html
|
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KiloPapa
Joined: 24 May 2006
Posts: 142
Location: Pearblossom, CA
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| Posted: Sun Dec 10, 2006 10:29 am Post subject: Deperately seeking opinions - (well maybe urgently seeking ) |
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Does the geometry of the gear legs change with the full weight of the
airplane on them and suspended as in flight?
Kevin
40494
tail/empennage
do not archive
| Quote: | >
>
> I understand that most flying builders have left the wheel pants & leg
> fairings off during their Stage 1. And some have not installed them
> until after flying. It appears that the alignment of these can be
> critical to the aircrafts top speed and overall handling. The plans call
> for raising the aircraft off the ground to facilitate the install. If
> this is the case, wouldn't it be better to install the pants & leg
> fairings BEFORE the engine gets hung? Would it help to ensure a better
> alignment? Does it make it easier / less time? From Tim' site it's
> obvious that they can be added later, for those of you who added them
> later, if you had it to do over again would you do them earlier? What
> about the other way around (those who did earlier)?
> My engine ships tomorrow, and I'm putting it on it's gear tomorrow ,
> debating whether to hang the engine when it arrives next week, or let it
> sit, while I do the Pants and Fairings.
>
> THANKS
>
> Deems Davis # 406
> Finishing - ( A Misnomer ! )
> http://deemsrv10.com/
> Want to see some pics of MY BPE IO-540-X w/ CAS?
>
> http://deemsrv10.com/album/My%20BPE%20IO-540-X%20w%20CAS/index.html
>
>
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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_________________
Kevin
40494
do not archive |
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