Today's Message Index:
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1. 05:39 AM - Re: Re: new member, new project? (Doug Geese)
2. 08:06 AM - Re: new member, new project? (super58d)
3. 11:32 AM - Re: a few new guy questions.... (Scott Stewart)
4. 06:21 PM - Re: Re: a few new guy questions.... (Jeff Walin)
5. 06:51 PM - Re: a few new guy questions.... (Christian Tremblay)
Message 1
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| Subject: | Re: new member, new project? |
The trim uses a Ray Allen Company servo to move the trim tab. The switch and indicator
are also Ray Allen. It all came as part of my kit. After looking at
the manual trim drawings I'm sure that the electric trim is much easier to install.
The electric flaps were also part of the controls kit. I think you would
want to specify these options when you order your fuselage kit. I can get
some pictures if you would like.
Doug
Message 2
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| Subject: | Re: new member, new project? |
Doug,
Sorry, I was really referring to the electric trim you added. I had a brain
fart and forgot that the flap control comes standard as electric with the kit.
You said the trim came as electric with your kit? Mine didn't. I just wanted
to get rid of the trim wheel and get electric on that as well. If you get the
time, some pics would be great.
Thanks,
Mark
--------
Mark
s/n 094
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=253334#253334
Message 3
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| Subject: | Re: a few new guy questions.... |
Hi Jeff,
If you decide to take the plunge into scratch-building the CH-640, you'll want
to keep Christian's and my email addresses handy. As far as I can tell, we are
the only two active scratch builders on this list. I had to develop material
spreadsheets and layout drawings to determine how much raw material to buy.
I would be happy to share these with you. I also needed to machine my own flanging
dies, which I could share.
Christian found several dimension errors in the plans which he documented on his
web site. I also found a few more. I plan to compile all these into one simple
document and post to this forum in the next several days. You will find
that the plans and the IPLs are about 99% complete. Some of the assembly work
requires you to think a bit about how everything should go together before it
starts to make sense.
I wrote to Steve Adams a while back about his CH-640 performance. He wrote "I
have an XP-0-360 and a Sensenich FP prop and get right at 130 kts TAS at 7000
feet, but generally cruise at 120-125 kts for better economy. Most of their performance
numbers are pretty realistic." Based on these numbers, I took the plunge.
--------
Scott Stewart
s/n: 0092
Building from plans
Rudder and Stabilator complete. Wings at 50%. Fuselage at 10%.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=253382#253382
Message 4
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| Subject: | Re: a few new guy questions.... |
Thanks, Scott.
I will keep in touch if I do begin this project. I plan to get the
plans around Christmas time.....
What are IPL's?
Do you know the max diameter of the prop?
Jeff
On Jul 16, 2009, at 1:32 PM, Scott Stewart wrote:
> >
>
> Hi Jeff,
>
> If you decide to take the plunge into scratch-building the CH-640,
> you'll want to keep Christian's and my email addresses handy. As
> far as I can tell, we are the only two active scratch builders on
> this list. I had to develop material spreadsheets and layout
> drawings to determine how much raw material to buy. I would be
> happy to share these with you. I also needed to machine my own
> flanging dies, which I could share.
>
> Christian found several dimension errors in the plans which he
> documented on his web site. I also found a few more. I plan to
> compile all these into one simple document and post to this forum in
> the next several days. You will find that the plans and the IPLs
> are about 99% complete. Some of the assembly work requires you to
> think a bit about how everything should go together before it starts
> to make sense.
>
> I wrote to Steve Adams a while back about his CH-640 performance.
> He wrote "I have an XP-0-360 and a Sensenich FP prop and get right
> at 130 kts TAS at 7000 feet, but generally cruise at 120-125 kts for
> better economy. Most of their performance numbers are pretty
> realistic." Based on these numbers, I took the plunge.
>
> --------
> Scott Stewart
> s/n: 0092
> Building from plans
> Rudder and Stabilator complete. Wings at 50%. Fuselage at 10%.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=253382#253382
>
>
Message 5
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| Subject: | a few new guy questions.... |
I Jeff,
As somebody said before, the plans includes IPL (Intruction Part List) sort
of step by step instructions, plus photo CD + a Document Standards. The IPL
is a sort of high level procedure to assembly the pieces. To my opinion,
those could be more detailled. But they are ok.
The plan itself are very well designed, accurate and complete. 99.9% error
free. I find only one minor error in the Extended spar, another CH640
constructor redesign the plan and give me digital copy. This copy is deposed
onto my web site.
In my opinion, the plan are great, all dies mesurement, forming bloc, and
many thing are there. Many other plans don't give you this info. The plan
are hand made, not computerized. But Chris Heinz is a great designer and the
plan content all detailled that you need, size or holes, positionning,
bolts, etc.
I like those plan because is give me all info that I need, I can complete my
plane whatever happen to Zenith, like bankrupties or others bad thingh that
we see in this market.
But the utility of plans is to tell you what to do, not How to become an
aircraft constructor. This is the part that you have to learn by yourself
and with the help of others. Study and read the plan many times before doing
a piece, and go, sure you will do some mistake, this is the normal process
to learn. I am not from this industrial sector, but after 3 years of
building, I fill confident to finish my plane, and a pretty one.
Performance of the plane : Sure the CH640 cruise at 150 and more. Steve
Adams and other have been confirmed those numbers. See the archive of the
forum, I think this was discussed before.
Enjoy buidling, and go for it, the knowledge will come by itself as you will
progress, this is the best advise that I can give you.
See you,
Christian
SN00059
CH640
-----Original Message-----
From: owner-zenith640-list-server@matronics.com
[mailto:owner-zenith640-list-server@matronics.com] On Behalf Of Jeff Walin
Sent: Thursday, July 16, 2009 00:16
Subject: Zenith640-List: a few new guy questions....
How complete are the plans and builders manual? I am a first time
builder, and need something to hold my hand a little. I have many
builders around in my Chapter, including Don Taylor of 'Tinker Toy'
fame. I am just hoping there is some form of step by step process in
the builders manual. I will be scratch building.
What is the max diameter of the prop? I am thinking about a Mazda 13B
Rotary and was looking at redrives and such.
Will it cruise at 150 like the info claims? With a O-360 or
equivalent? I'm looking for something to do cross country travelling
with.
Jeff
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