Today's Message Index:
----------------------
1. 07:43 AM - Re: Drilling (Merems)
2. 08:41 AM - Drilling (Boyd Butler)
3. 08:51 AM - Flap installation (Curt Hoffman)
4. 09:04 AM - Re: Drilling (Gary)
5. 09:27 AM - Re: Drilling (Jim Hosie)
6. 04:58 PM - Re: Flap installation (Gary Newsted)
7. 06:54 PM - HS 908 Attach Angle Brackets (Glenn Brasch)
8. 07:18 PM - Re: HS 908 Attach Angle Brackets (Dave Nicholson)
Message 1
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--> RV9-List message posted by: "Merems" <merems@cox.net>
Gary,
The only way to get a truly round hole is to ream the hole when finished.
This triangular hole condition is most noticeable in thin materials. The
best way to minimize this condition is to pilot drill and enlarge.
Paul
----- Original Message -----
From: "Gary" <rv9er@3rivers.net>
Subject: Re: RV9-List: Drilling
> --> RV9-List message posted by: "Gary" <rv9er@3rivers.net>
>
> Steve.....if you want the holes to be round and centered where they
started, start small and use progressivelly larger drills in small
increments.
>
> Gary
>
> On the rare occasion in the past when I drill a large hole I have
> occasionally seen a tendancy for it to be slightly triangular. Now I have
> to drill the 5/16th holes for the rear spar. Before I do I want to make
sure
> this is not going to hapeen. I did a test piece today and sure enough iit
> was slightly out of true. What is going on please?
>
> Thanks guys! Steve.
>
>
> ---
>
>
Message 2
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--> RV9-List message posted by: "Boyd Butler" <linbb@worldnet.att.net>
In something like the rear or front spar one should use a reamer for good fit
not a drill as no matter what size the hole it will not be round. Ask a machinist
and he will tell you for sure.
Boyd Butler
Message 3
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| Subject: | Flap installation |
--> RV9-List message posted by: "Curt Hoffman" <choffman9@cinci.rr.com>
I just did something that I would like some perspective one.
On the -9 there are three flap brackets. Instructions call for you to string the
three brackets to make sure they are in alignment, which I did, but apparently
not perfect.
When I went to install the flaps, now that all the brackets are fully riveted on,
the center bracket was a smidgeon off. I could almost get the bolt through
the bushing, but would have to put a fair amount of pressure on the flap in the
center to get it in. That flap spar doesn't move easily.
I chose to slightly ream out the bushing to better align it with the bracket holes
and allow the bolt to go through easily. The holes in the center bracket on
the flap are untouched but the bushing is slightly oversize now. Both the inboard
and outboard brackets and bushings were untouched. The flap swings freely.
I'm hoping this is an ok solution given the slightly shorter flaps on the -7 only
run inboard and outboard brackets and the hole was only slightly enlarged.
The alternatives really looked difficult.
Curt Hoffman
RV-9A wings (almost) done working on tail
1968 Mustang 302 convertible
Piper Cherokee N5320W
Message 4
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--> RV9-List message posted by: "Gary" <rv9er@3rivers.net>
Paul,
Lots of holes in thin material in an RV....... I don't know of anyone who reams
very many of them. I reamed the tip-up hinge holes, and a few others that act
as pivots or critical areas, but not in thin material. For big holes in thin
stuff, I use a Unibit, as was previously mentioned by others on the list.
Reaming is sort of impractical in many instances......Which holes did you ream?
Gary
----- Original Message -----
From: Merems
To: rv9-list@matronics.com
Sent: Sunday, February 02, 2003 8:50 AM
Subject: Re: RV9-List: Drilling
--> RV9-List message posted by: "Merems" <merems@cox.net>
Gary,
The only way to get a truly round hole is to ream the hole when finished.
This triangular hole condition is most noticeable in thin materials. The
best way to minimize this condition is to pilot drill and enlarge.
Paul
---
Version: 6.0.431 / Virus Database: 242 - Release Date: 12/24/02
Message 5
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--> RV9-List message posted by: "Jim Hosie" <jhosie4@attbi.com>
Steve,
Try slowing your drill speed down.
The larger the drill bit the slower the speed.
In the instruction binder there is a section on drilling and speeds.
Jim Hosie
N-9SU
Wings
----- Original Message -----
From: "Steve Sampson" <SSampson.SLN21@london.edu>
Subject: RV9-List: Drilling
> --> RV9-List message posted by: "Steve Sampson"
<SSampson.SLN21@london.edu>
>
> Daft question which I ought to know the answer to!
>
> On the rare occasion in the past when I drill a large hole I have
> occasionally seen a tendancy for it to be slightly triangular. Now I have
> to drill the 5/16th holes for the rear spar. Before I do I want to make
sure
> this is not going to hapeen. I did a test piece today and sure enough iit
> was slightly out of true. What is going on please?
>
> Thanks guys! Steve.
>
>
Message 6
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| Subject: | Re: Flap installation |
--> RV9-List message posted by: "Gary Newsted" <fcs@jlc.net>
Hate to say it, but the alternatives, no matter how hard they look, would have
been better.
I take it you've already riveted your bottom skins on? Control surface
bearings are not
the place to goof up.
Message 7
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| Subject: | HS 908 Attach Angle Brackets |
--> RV9-List message posted by: "Glenn Brasch" <gbrasch@earthlink.net>
I remember someone saying there was info to suggest not attaching these brackets
to the spar until later down the road, vs. when the plans suggest. I have looked
in the archives but can't locate anything. Any input, including reasons
why or why not, would be greatly appreciated. Thanks in advance, Glenn Brasch
in Arizona, -9A Emp.
DO NOT ARCHIVE
Message 8
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| Subject: | Re: HS 908 Attach Angle Brackets |
--> RV9-List message posted by: "Dave Nicholson" <dnick2@insightbb.com>
I installed my HS Attach Angle Brackets after everything else was completed
rather than during assembly as called for in the instructions. (I had
screwed up the hole alignment and had to go to #5 rivets.)
This sequence made some of the other rivets easier to access and did not
create any problems with installing the Angel Bracket rivets.
Dave Nicholson
90347
----- Original Message -----
From: "Glenn Brasch" <gbrasch@earthlink.net>
Subject: RV9-List: HS 908 Attach Angle Brackets
> --> RV9-List message posted by: "Glenn Brasch" <gbrasch@earthlink.net>
>
> I remember someone saying there was info to suggest not attaching these
brackets to the spar until later down the road, vs. when the plans suggest.
I have looked in the archives but can't locate anything. Any input,
including reasons why or why not, would be greatly appreciated. Thanks in
advance, Glenn Brasch in Arizona, -9A Emp.
> DO NOT ARCHIVE
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