Today's Message Index:
----------------------
1. 01:04 AM - Re: Engine Choice (jetboy)
2. 05:19 AM - Wing spar drill to A5? (Mark Colbeck)
3. 06:11 AM - Re: Wing spar drill to A5? (Randall Hebert)
4. 09:13 AM - Re: Wing spar drill to A5? (Max Johansson)
5. 10:24 AM - Re: Wing spar drill to A5? (Randall Hebert)
6. 01:49 PM - Chat Room Reminder (George Race)
Message 1
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| Subject: | Re: Engine Choice |
Mike,
I agree with whats been said. I use the 2200 and the choice came down to whether
I wanted to maintain a liquid cooled setup with gearbox and multiple carbs
where one will do, or go air cooled direct drive layout with some loss of
prop efficiency and top end performance.
Another reason is the cost locally to me is 2:1 in favour of the Jabiru, and parts
cost is also low - and I havent needed anything much.
The plane can fly and perform on any powerplant that meets the plan's specs., just
read them carefully its really expensive to change engine mounts and cowls
later.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238879#238879
Message 2
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| Subject: | Wing spar drill to A5? |
Guys I am not totally happy with the holes through the top skin and nose skin into
the spar top. I would like to drill out to A5 on the spar only. Does anyone
see any issue with this?
--------
CH701
70% Complete
www.mykitlog.com/mcolbeck
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238886#238886
Message 3
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| Subject: | Wing spar drill to A5? |
I had to do that on my pilot side wing.
Randall J Hebert
-----Original Message-----
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Mark
Colbeck
Guys I am not totally happy with the holes through the top skin and nose
skin into the spar top. I would like to drill out to A5 on the spar only.
Does anyone see any issue with this?
Message 4
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| Subject: | Re: Wing spar drill to A5? |
Mark, it is perhaps not a good idea to enlarge the spar cap holes.
My inspector refused even to let me add a new set of holes in a spar cap
between
old ones. Anywhere else it would have been OK but not in the spar cap !
Call ZAC, they probably have an opinion on this.
rgrds, Max
Mark Colbeck kirjoitti:
>
> Guys I am not totally happy with the holes through the top skin and nose skin
into the spar top. I would like to drill out to A5 on the spar only. Does anyone
see any issue with this?
>
> --------
> CH701
> 70% Complete
>
> www.mykitlog.com/mcolbeck
>
>
>
Message 5
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| Subject: | Wing spar drill to A5? |
One row of holes whether two holes or 20 does not affect the strength of the
spar.
If you try to put two Rows side by side (even if this were possible) then
the strength would be severely affected.
Think about looking at the cross section of the extrusion.
You deduct the diameter of the hole times the thickness from the cross
sectional area of the extrusion. This ignores the length and number of
holes.
Randall J Hebert
Randall J Hebert & Associates, Inc
Consulting Engineers
Ph 337-261-1976 Fx 337-261-1977
-----Original Message-----
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Max
Johansson
Sent: Monday, April 13, 2009 11:02 AM
Subject: Re: Zenith701801-List: Wing spar drill to A5?
<maxjohansson@elisanet.fi>
Mark, it is perhaps not a good idea to enlarge the spar cap holes.
My inspector refused even to let me add a new set of holes in a spar cap
between
old ones. Anywhere else it would have been OK but not in the spar cap !
Call ZAC, they probably have an opinion on this.
rgrds, Max
Mark Colbeck kirjoitti:
<mark@masterpieceliving.ca>
>
> Guys I am not totally happy with the holes through the top skin and nose
skin into the spar top. I would like to drill out to A5 on the spar only.
Does anyone see any issue with this?
>
> --------
> CH701
> 70% Complete
>
> www.mykitlog.com/mcolbeck
>
>
>
Message 6
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| Subject: | Chat Room Reminder |
Live Chat Room every Monday evening around 8:00 EDT
www.mykitairplane.com <blocked::http://www.mykitairplane.com/>
Click on the link on the page.
George
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