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RURUNY(at)aol.com
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 Posted: Sun Jun 10, 2007 7:04 am Post subject: Windsheild Rubber Mouldingn 701 |
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Mike,
I'll add contact info on my site soon, just haven't had the time lately.
I had posted this previously a while back and the answer to your question is here.
Some answers to your questions. Hopefully helpful.
1. What is the top window made of, plexiglass or lexan? How about the
windshield? Bubble doors?
ans: The top window is made of lexan its tough in that it won't crack easy but it will scratch easy.
The windshield is plexiglass and will crack easy. Make sure to use the special drill bits to go thru both of them though. You can drill through the lexan/plexiglass right into the tubing by the way with these bits. The bubble doors are plexiglass so be careful drilling also. For cutting plexiglass I used a hand grinder with a fiberglass
disc. Cutting the lexan, I scored it with a utility knife and straight edge and snapped the peices off.
2. The plans call for rivets for the top window. With all the talk of
cracking lexan or plexiglass, is it wise to use screws instead of rivets?
ans: The lexan is very tough and the rivets work fine. You can use screws but most of the installations
I've seen are rivets. No cracking at all. I did both installations this past summer in 95 deg weather
without issues. I'd be careful working in cold weather with the windshield. My garage is so cold
now that I don't even want to look at the project.
3. Is the idea of the diagonal stiffener 7F12-3 to put a bow in the top
window?
ans: Yes it puts a bow in the top to keep it from flopping around, and tightens it up. It looks good also.
4. Has anyone used some type of weatherstripping or silicone between the
window and the upper tubes to keep out water?
ans: I used silicone on the side tubes but it just squeezes out to the sides of the tube. The window sits
on the top of the tube which does not give a goood surface for silicon. A very thin weather strip would be
better or nothing at all since the wing root will cover this area when installed. I would say most of the leakage will occur at the front corners around the windshield/front wing mounts. I will use a cover when its outside.
5. It seems like the rivets at the front upper tube/cabin frame
connection will put pressure on the top window, since the cabin frame and
rivets are higher than the upper tubes. The same goes for the back
gusset, though the plans call for that area to be cut out.
ans: This is an area where the instructions do not give any info. Since the cabin frame to the tubes is an important structural area, I did not rivet thru the lexan into the tubes here. At the front, just set the top
window on top of the rivets and rivet thru the side tubes only, a little bowing or pressure but it doesn't
matter.
6. What about silicone or weatherstripping for the front windshield?
Roger at Zenith says his 701 leaks pretty badly during rain. Has anyone
managed to keep the water out?
ans: I shopped around for the channel and got some useless stuff. I finally got some from Spruce 05-01500
that worked great. It makes the windshield look very nice. The stuff they use on the Czec 701's is really nice but I couldn't find it anywhere.
7. the list archives show that some have used the rubber channel 05-01500
from ACS for the windshield. How did you fasten the channel?
ans: That's the part number I used for channel and used polyzap from Tower Hobbies to fasten the channel to the windshied. I would recommend using very
fine sandpaper on the windshield to roughen it up a bit where the channel contacts it inside and outside.
This will allow the polyzap to bond better. Run a thin line inside the channel and install it quickly, and don't
cut the channel to exact size before, trim it off at the ends after installation. This is one of those moments
of high stress to not get the stuff all over the windshield. After the windshield was screwed down I ran a line
of weather stripping adhesive under the channel where it contacts the airframe.
8. Is there any problem with installing the top window, bubble doors and
front windshield before installing the wings?
ans: I hope not because I installed mine. You can tape poster board on the top window while installing the
wing root to keep from damaging it.
Brian
701Builder.com
See what's free at AOL.com.
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beachyjeff(at)juno.com
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| Posted: Mon Jun 11, 2007 4:48 am Post subject: Windsheild Rubber Mouldingn 701 |
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I used PN 05-01500 from ACS and am happy with it.
Jeff Beachy
CH701, 90%
[quote][b]
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