Today's Message Index:
----------------------
1. 03:30 AM - Cof G - weight and balance (chris Sinfield)
2. 06:35 AM - Re: fundamental question (Walter Carey)
3. 07:45 AM - Re: Cof G - weight and balance (Bryan Martin)
4. 08:15 AM - Re: fundamental question (Bill Naumuk)
5. 11:26 AM - 601 HD Aileron Fitting, Right wing installed-Photo Request (MHerder)
Message 1
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| Subject: | Cof G - weight and balance |
OK
I am thinking of the C of G movement aft on the envelope
Why does the fwd line move aft of 18% when above 1080lb up to 23.3% at 1320lb?
what causes that?
Chris..
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=262687#262687
Message 2
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| Subject: | Re: fundamental question |
I third this recommendation. Try to prevent the air gun from bouncing and l
eaving a mark or dent. I hold the gun in my right hand and use my left hand
to hold the pulling head of the gun on the rivet head and dampen the unavo
idable bounce of the gun when you pull the trigger. You'll get the idea aft
er a few pulled rivets. I average about a second per pull. You're going to
have somewhat of a ragged edge where the stem breaks off because you're bas
ically pulling apart the steel stem at the weakest point just below the riv
et head.
-
Walt Carey in Dayton
601XL w/Jab 3300A.
-
--- On Fri, 9/11/09, Bill Naumuk <naumuk@windstream.net> wrote:
From: Bill Naumuk <naumuk@windstream.net>
Subject: Re: Zenith601-List: fundamental question
I second this recommendation.
- - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - ---Bill
----- Original Message ----- From: "Bryan Martin" <bryanmmartin@comcast.net
>
Sent: Friday, September 11, 2009 7:11 PM
Subject: Re: Zenith601-List: fundamental question
net>
>
> If you set the pressure at the tank and have a long length of hose or-
a small diameter hose, the pressure may drop quite a bit at the gun.- It
shouldn't take much more than a second or so to set a rivet. I- would sug
gest you adjust the pressure to get a clean break in about a- second
>
> On Sep 11, 2009, at 6:28 PM, Lee Steensland wrote:
>
land.net
>> >
>>
>> Guys,
>>
>> I have been building for a little while now and I have something- that
has been nagging me for a while now.
>>
>> I noticed that the recommended pressure zenith suggests for pulling- A
5 and A4 rivets seems a little low to my riveter.- If I set it to- thos
e values, it won't break the stem off.
>>
>> So I turn up the pressure a little until I can get it to break. So I gue
ss my question is, how long from the time you squeeze the trigger until the
stem breaks are people experiencing.
>>
>> I can wait 20 seconds down to almost instantly. When they break off inst
antly I get oddly shaped ends, so obviously that isn't correct.
>>
>> What say you, netizens?
>
>
>
> -- Bryan Martin
> N61BM, CH 601 XL,
> RAM Subaru, Stratus redrive.
> do not archive.
>
>
>
>
>
>
>
>
le, List Admin.
Message 3
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| Subject: | Re: Cof G - weight and balance |
Probably because you might not have enough margin in elevator
authority in the region forward of that line. The higher the weight
and more forward the CG, the more elevator is needed to keep the nose
up.
On Sep 12, 2009, at 6:27 AM, chris Sinfield wrote:
> >
>
> OK
> I am thinking of the C of G movement aft on the envelope
>
> Why does the fwd line move aft of 18% when above 1080lb up to 23.3%
> at 1320lb? what causes that?
>
> Chris..
>
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
Message 4
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| Subject: | Re: fundamental question |
Oddly, I tried trimming this post and it won't allow me to. Oh, well.
I started my project with a Zenith hand puller and the "Jump" was so
bad I had to hold a cardboard mask around the rivet to protect the
surface underneath. When the riveter wore out I went to an HF air gun
and was really worried about the jump, but there was none to speak of.
Perfectly set rivets 99% of the time- I might have to drill and reset 1
out of a hundred. I don't know if that's due to the construction of the
HF riveter or my overall setup. I have a 20gal 5hp compressor, good
quality 50' hose, and run 90psi at the secondary regulator.
That's not to say the HF puller is perfect- they have two bad
habits. One is a leak that develops in the trigger mechanism that
reverses the action, spitting out oil rather than pulling the rivet. The
HF comes with a full set of replacement gaskets and nose jaws, but I've
never figured out how to fix the problem. If anyone knows how, I have
one that has this malady and would appreciate hearing from you.
The second is related to grip- either the puller doesn't grab the
rivet or won't let go of it. The HF comes with a wrench that has a
template for nosepiece adjustment, but I found that is just a starting
point. You might have to adjust 1/16" from the template mark either way
depending on how the puller is acting. DON'T THROW TOMATOS IF I'M WRONG,
but I think you rotate the nosepiece assembly counterclockwise if the
puller won't let go of the rivet. Actually, you CAN throw tomatos as
long as you also throw the lettuce and a bottle of blue cheese dressing
to make a salad.
Bill
----- Original Message -----
From: Walter Carey
To: zenith601-list@matronics.com
Sent: Saturday, September 12, 2009 9:16 AM
Subject: Re: Zenith601-List: fundamental question
I third this recommendation. Try to prevent the air gun from
bouncing and leaving a mark or dent. I hold the gun in my right hand and
use my left hand to hold the pulling head of the gun on the rivet head
and dampen the unavoidable bounce of the gun when you pull the trigger.
You'll get the idea after a few pulled rivets. I average about a second
per pull. You're going to have somewhat of a ragged edge where the stem
breaks off because you're basically pulling apart the steel stem at the
weakest point just below the rivet head.
Walt Carey in Dayton
601XL w/Jab 3300A.
--- On Fri, 9/11/09, Bill Naumuk <naumuk@windstream.net> wrote:
From: Bill Naumuk <naumuk@windstream.net>
Subject: Re: Zenith601-List: fundamental question
To: zenith601-list@matronics.com
Date: Friday, September 11, 2009, 9:29 PM
<naumuk@windstream.net>
I second this recommendation.
Bill
----- Original Message ----- From: "Bryan Martin"
<bryanmmartin@comcast.net>
To: <zenith601-list@matronics.com>
Sent: Friday, September 11, 2009 7:11 PM
Subject: Re: Zenith601-List: fundamental question
<bryanmmartin@comcast.net>
>
> If you set the pressure at the tank and have a long length
of hose or a small diameter hose, the pressure may drop quite a bit at
the gun. It shouldn't take much more than a second or so to set a
rivet. I would suggest you adjust the pressure to get a clean break in
about a second
>
> On Sep 11, 2009, at 6:28 PM, Lee Steensland wrote:
>
<zenith-list@steensland.net
>> >
>>
>> Guys,
>>
>> I have been building for a little while now and I have
something that has been nagging me for a while now.
>>
>> I noticed that the recommended pressure zenith suggests for
pulling A5 and A4 rivets seems a little low to my riveter. If I set it
to those values, it won't break the stem off.
>>
>> So I turn up the pressure a little until I can get it to
break. So I guess my question is, how long from the time you squeeze the
trigger until the stem breaks are people experiencing.
>>
>> I can wait 20 seconds down to almost instantly. When they
break off instantly I get oddly shaped ends, so obviously that isn't
correct.
>>
>> What say you, netizens?
>
>
>
> -- Bryan Martin
> N61BM, CH 601 XL,
> RAM Subaru, Stratus redrive.
> do not archive.
>
>
>
>
>
>
> ?Zenith601-List"
target=_blank>http://www.matronics.com/Navigator?Zenith6bsp;
- MATRONICS WEB FORUMS -; -Matt Dralle, List
Admin=========
Message 5
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| Subject: | 601 HD Aileron Fitting, Right wing installed-Photo Request |
Im looking for some help with the interface between the aileron and the center
section on my HD. I am in the process of fitting up my wings, and have my right
wing bolted up. Then I went to put my aileron on and found that it didn't
fit, it was approximately 15 mm too long to fit between the center section trailing
edge and the outboard trailing edge. After looking at the plans a little
further it appears that I should have waited until the wing was installed before
I installed center section trailing edge fairing (6e 1-1 if I recall correctly).
The drawings poorly illustrate that the aileron aligns with the top
skin which I now believe not to be the case. Yes my aileron is exactly 2400 mm
long.
Can someone please send me a photos from the top, rear, and bottom of this tricky
interface. THANKS IN ADVANCE FOR YOUR HELP!!!
Did anyone else have trouble with this???
--------
One Rivet at a Time!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=262713#262713
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