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jwalin(at)earthlink.net
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 Posted: Wed Jul 15, 2009 8:18 pm Post subject: a few new guy questions.... |
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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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super58d
Joined: 15 Sep 2008
Posts: 52
Location: Savannah, GA
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| Posted: Wed Jul 15, 2009 10:19 pm Post subject: Re: a few new guy questions.... |
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Jeff,
The rudder starter kit has a step by step picture guide that walks you through the process of building the rudder. Everything else used what's called IPLs. They are step by step in nature, but in writing only. They do tell you exactly what to do, and in what order, but there is some studying involved before building a section. They give you a disk that had about a gazillion pics on it. (I find new ones everytime I look on it). I have never built a plane before and am doing pretty good with what Zenair has provided. (I'm building from a kit also). All of us have questions though. And the guys on this site as well as Zenair themselves have been more that helpful getting me back on track when I'm stuck. Can't speak on behalf of the other questions though. I'm just finishing the stabilator, about to get the wings going.
Mark
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Mark
s/n 094
My Build Site:
http://www.mykitlog.com/stephen363/ |
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Scott Stewart
Joined: 29 Jul 2008
Posts: 30
Location: Windsor, California
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| Posted: Thu Jul 16, 2009 10:32 am Post subject: Re: a few new guy questions.... |
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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.
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_________________
Scott Stewart
CH-640 built from plans
Flying since August 2014 |
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jwalin(at)earthlink.net
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| Posted: Thu Jul 16, 2009 5:21 pm Post subject: a few new guy questions.... |
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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:
| Quote: |
>
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 53382#253382
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Christian Tremblay
Joined: 22 Aug 2008
Posts: 25
Location: Montreal
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| Posted: Thu Jul 16, 2009 5:51 pm Post subject: a few new guy questions.... |
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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
--
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_________________
Christian Tremblay - Montreal, Qc
A guy who build a CH640 from plan - SN0059
www.zodiac640.com |
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