Today's Message Index:
----------------------
1. 12:23 AM - Re: Finishing 4130 welded parts (Brady)
2. 01:57 AM - Re: "Xtra pistons" (mcjon77)
3. 02:58 AM - Re: 701 elevator trim option (kmccune)
4. 07:31 AM - Re: 701 elevator trim option (ronlee)
5. 07:33 AM - Re: [Probable Spam] Finishing 4130 welded parts (LarryMcFarland)
6. 08:49 AM - Re: Finishing 4130 welded parts (Gary Gower)
7. 09:11 AM - Re: Re: 701 elevator trim option (Gary Gower)
8. 09:16 AM - Questions on the CH-801 (A. J. Mendes Pereira)
9. 09:57 AM - Re: Re: 701 elevator trim option (BokKat)
10. 01:51 PM - Re: Finishing 4130 welded parts (kmccune)
11. 05:06 PM - Re: Re: Finishing 4130 welded parts. (Gary Gower)
12. 06:56 PM - Re: Finishing 4130 welded parts (JohnDRead@aol.com)
Message 1
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| Subject: | Re: Finishing 4130 welded parts |
John,
The powder coating oven doesn't get hot enough to adversely effect your welded
parts. It should only see about 500 degrees momentarily.
Powder coating is good for non moving parts but things like your front gear strut
I would go with a chrome plating.
Be sure you tell the Plater to "Bake off the Hydrogen" to avoid embrittlement.
If he doesn't know what you are talking about find another Chrome plater.
--------
Brady McCormick
Poulsbo, WA
www.magnificentmachine.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232307#232307
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| Subject: | Re: "Xtra pistons" |
Thanks guys for the info about the 912xtra and super xtra pistons. They seem like
a good option, especially considering that I have seen more 912ul engines
for sale at a discount (usually by people upgrading to 912ULS or 914) than I have
912ULS engines. Definately something to consider for the future.
--------
Jon McDonald
Building Sonex #1287
Thinking ahead about a Zenith CH 701 :D
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232309#232309
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| Subject: | Re: 701 elevator trim option |
You are correct, it is not a quick adjust model.
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232311#232311
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| Subject: | Re: 701 elevator trim option |
The pitch trim unit that Kevin posted a picture of is a beautiful unit. My friend
has one in his Sonex which works well but is too slow for me. I is very nice
for fine trim adjustment though.
I will try to get to the airport this weekend and get some pictures to post of
my manual elevator trim.
Ron Lee
--------
Ron Lee
Tucson, Arizona
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232319#232319
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| Subject: | Re: Finishing 4130 welded parts |
Hi John,
Most people just paint and or epoxy coat surfaces expected to be
abraded. I'd stay away from any plating because of the associated
embrittlement problem.
Steel parts and gear struts hold up really well with just a prime and a
finish coat. The mistake I see so often is a special coating or failed
plating or difficult paint
process that is hard to repair because the process and a booth are not
available. I'd recommend you also find a straight color that can be
found in a rattle can later
when you mostly just want to fly.
Larry McFarland 601HDS at www.macsmachine.com
JohnDRead@aol.com wrote:
> I was thinking of having the 4130 parts powder coated but I am worried
> that the oven baking may change the temper of the parts. Is there
> another method of coating the steel parts that will stand up to wear
> and tear?
>
> John Read
> CH701 - Elbert CO - Jabiru 3300
>
> Phone: 303-648-3261
> Fax: 303-648-3262
> Cell: 719-494-4567
>
>
>
> *
> *
Message 6
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| Subject: | Re: Finishing 4130 welded parts |
Hello John,
-
In my factory we have powder coating,-I am no expert but can tell you wha
t I have learned in this 20 plus years...-
-
There is no problem with the heat of the oven to the 4130,- our is set at
180 =BAC (about 356=BAF)- so will not do any harm.- BUT- I did not p
owder coated the 701 (or the 601XL wea re building) parts, because there is
-one risk.--
A well aplied coat of paint will make a "thick" cover over the material, th
e paint is more flexible that the 4130, so IF a little crack beguins to dev
elope, the paint will not let you see it in the beguining.
Another thing is-I always paint the engine mount white, is easyer to see
any cracking even in the beguining.
-
Hope this helps
-
Saludos
Gary Gower
Flying from Chapala,- Mexico
-
--- On Thu, 2/26/09, JohnDRead@aol.com <JohnDRead@aol.com> wrote:
From: JohnDRead@aol.com <JohnDRead@aol.com>
Subject: Zenith701801-List: Finishing 4130 welded parts
I was thinking of having the 4130 parts powder coated but I-am worried th
at the oven baking may change the temper of the parts. Is there another met
hod of coating the steel parts that will stand up to wear and tear?
-
John Read
CH701 - Elbert CO - Jabiru 3300
Phone: 303-648-3261
Fax: 303-648-3262
Cell: 719-494-4567
-
-
Get a jump start on your taxes. Find a tax professional in your neighborhoo
d today.
=0A=0A=0A
Message 7
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| Subject: | Re: 701 elevator trim option |
Hello Robert,
-
I do not see any problem in a slow trim.-I will give my-own point of vi
ew, what I learned-from my Instructor is that the trim is to lighten-th
e force in the joystick, not to set the aircraft attitude.-- I-set my
aproach (or climb) attitude with the joystick, then use the trim to-ligh
ten the-force on the hand.
In cruise, the slower the movement of the trim the better, this for fine ad
justment.
With the trim of my 701 is not easy to fine tune it in cruise, because the
motor is very sensitive.
Hope this helps.
-
Saludos
Gary Gower
Flying from Chapala, Mexico.
.
-
--- On Thu, 2/26/09, Robert Pelland <robert.pelland@cgocable.ca> wrote:
From: Robert Pelland <robert.pelland@cgocable.ca>
Subject: Re: Zenith701801-List: Re: 701 elevator trim option
Kevin,
-
I like the photo of manual trim control mechanism you posted, but my main w
orry would be how quick changes could be made in case of a " go-around ".
-
-
I actually started looking at a system for manually controlling the trim ta
b to get away from the delay that is seen when using an electric trim contr
oller.- I would expect that the-one-you have just included in your re
sponse, might take quite a few turns ( I only have two hands ) to get the t
rim back to it's take off position.
-
My past experience ( although limited ) has taught me that when landing in
conditions that are not necessarily ideal, my two hand and two feet are ver
y busy, so I would not want to be obliged to have to spend too much time tu
rning the knob one way or the other, to try and get the trim tab, back to i
t's take off position.- However in straight and level flight, the use of
a screw type of controller would make fine tuning a pleasure.
-
Maby it's just me,,,,- and thank's for the pic :o)
-
regards
Robert
-
-
----- Original Message -----
From: kmccune
Sent: Thursday, February 26, 2009 8:59 AM
Subject: Zenith701801-List: Re: 701 elevator trim option
Funny thing is I program, modify and repair automated machinery and the one
thing its taught me is simple is better!
Here is what I was thinking of using.
Kevin
--------
Mark Twain: Twenty years from now you will be more disappointed by the thin
gs that you didn't do than by the ones you did do. So throw off the bowline
s. Sail away from the safe harbor. Catch the trade winds in your sails. Exp
lore. Dream. Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232202#232202
Attachments:
http://forums.matronics.com//files/trim_system_2289_298.jpg
=0A=0A=0A
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| Subject: | Questions on the CH-801 |
Hi all,
I have been lurking on the Group/List for a while; I mostly listen, and I
have just about decided to build an 801.
I still have a few questions, most of which will be asked to Zenithair, but
I would like to get the fields' opinion on a few less publicized points of
the 801. Please feel free to add those you find relevant or pertinent.
- Does the 801 suffer from the same "oil canning" syndrome that is so
apparent on the 701?
- Does the nose wheel really make the rudder heavy and "weird" as I hear of
its design?
- What's a realistic cruising speed figure at 2 or 3000'? I hear that the
factory's 105 mph is a bit optimistic and at altitude.
- What would you consider the minimum runway requirement for safe operation
at gross and a 30C (86F) no wind condition?
My farm strip is 800' long, with a clearway of 500 extra feet at one end
that could be dressed as runway, although I'd better fit floats for winter,
'cause that patch gets a little soaked with rain.
- I'll build a small Hangar; just enough for the plane, but since I'll be
building in it, is the "span x length and a little extra room for
workbench/power tools" enough to build an 801, or should I go with the next
size hangar? I was thinking something like Miracletruss or Perka; I also
like the kit concept for the hangar, so it really doesn't cost more than the
plane :-)
Thanks for your patience
Fly safely!...
Antonio Pereira
Portugal
Message 9
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| Subject: | Re: 701 elevator trim option |
Gary is right! You don't fly the plane with trim, you only use the trim
to reduce the force of control inputs. Speed of trim in a go around is
not very important.
Control inputs on my 701 are not heavy anyway, even when deliberately
set out of trim in a simulated go around or recovery from a level
trimmed out power off stall.
----- Original Message -----
From: Gary Gower
To: zenith701801-list@matronics.com
Sent: Friday, February 27, 2009 11:11 AM
Subject: Re: Zenith701801-List: Re: 701 elevator trim option
Hello Robert,
I do not see any problem in a slow trim. I will give my own
point of view, what I learned from my Instructor is that the trim is to
lighten the force in the joystick, not to set the aircraft attitude. I
set my aproach (or climb) attitude with the joystick, then use the trim
to lighten the force on the hand.
In cruise, the slower the movement of the trim the better, this
for fine adjustment.
With the trim of my 701 is not easy to fine tune it in cruise,
because the motor is very sensitive.
Hope this helps.
Saludos
Gary Gower
Flying from Chapala, Mexico.
.
--- On Thu, 2/26/09, Robert Pelland <robert.pelland@cgocable.ca>
wrote:
From: Robert Pelland <robert.pelland@cgocable.ca>
Subject: Re: Zenith701801-List: Re: 701 elevator trim option
To: zenith701801-list@matronics.com
Date: Thursday, February 26, 2009, 9:28 AM
Kevin,
I like the photo of manual trim control mechanism you posted,
but my main worry would be how quick changes could be made in case of a
" go-around ".
I actually started looking at a system for manually
controlling the trim tab to get away from the delay that is seen when
using an electric trim controller. I would expect that the one you have
just included in your response, might take quite a few turns ( I only
have two hands ) to get the trim back to it's take off position.
My past experience ( although limited ) has taught me that
when landing in conditions that are not necessarily ideal, my two hand
and two feet are very busy, so I would not want to be obliged to have to
spend too much time turning the knob one way or the other, to try and
get the trim tab, back to it's take off position. However in straight
and level flight, the use of a screw type of controller would make fine
tuning a pleasure.
Maby it's just me,,,, and thank's for the pic :o)
regards
Robert
----- Original Message -----
From: kmccune
To: zenith701801-list@matronics.com
Sent: Thursday, February 26, 2009 8:59 AM
Subject: Zenith701801-List: Re: 701 elevator trim option
<kmccune@somtel.net>
Funny thing is I program, modify and repair automated
machinery and the one thing its taught me is simple is better!
Here is what I was thinking of using.
Kevin
--------
Mark Twain: Twenty years from now you will be more
disappointed by the things that you didn't do than by the ones you did
do. So throw off the bowlines. Sail away from the safe harbor. Catch the
trade winds in your sails. Explore. Dream. Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232202#232202
Attachments:
http://forums.matronics.com//files/trim_system_2289_298.jpg
Message 10
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| Subject: | Re: Finishing 4130 welded parts |
Its always seemed strange that people paint their mounts white, now I know!
Thanks
Kevin
do not archive.
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232354#232354
Message 11
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| Subject: | Re: Finishing 4130 welded parts. |
Also another advise:
-
Even if you dont want a "show type" of airplane, try always to keep clean a
t least, before every flight:
-
The Leading edge-area of the wings,-
The windshield
The propeller, checking for kinks, and
The engine area, to find early cracks in the engine mout and any oil leak s
tarting in the engine.
-
Also washing and waxing yourself the-airplane will give you the best pref
light of the fuselage, you can see and feel possible rivets that get loose,
kinks in the fuselage, cracks in- any support,- loosen nuts, etc.
-
Hope this helps.
-
Saludos
--- On Fri, 2/27/09, kmccune <kmccune@somtel.net> wrote:
From: kmccune <kmccune@somtel.net>
Subject: Zenith701801-List: Re: Finishing 4130 welded parts
<kmccune@somtel.net>
Its always seemed strange that people paint their mounts white, now I know!
Thanks
Kevin
do not archive.
--------
Mark Twain: Twenty years from now you will be more disappointed by the thin
gs
that you didn't do than by the ones you did do. So throw off the bowlines.
Sail away from the safe harbor. Catch the trade winds in your sails. Explor
e.
Dream. Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=232354#232354
=0A=0A=0A
Message 12
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| Subject: | Re: Finishing 4130 welded parts |
Thanks for the replies guys. do not archive.
John Read
CH701 - Elbert CO - Jabiru 3300
Phone: 303-648-3261
Fax: 303-648-3262
Cell: 719-494-4567
**************Get a jump start on your taxes. Find a tax professional in your
neighborhood today.
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