Today's Message Index:
----------------------
1. 06:53 AM - Re: Mounting engine in 701? (Larry Martin)
2. 07:31 AM - Re: Mounting engine in 701? (Larry McFarland)
3. 07:49 AM - re Mounting engine in 701? (roy vickski)
4. 09:19 AM - Nose Wheel Fork (george may)
5. 11:05 AM - Re: XL Front Fork Doubler (Bryan Martin)
6. 12:20 PM - Re: XL Front Fork Doubler (george may)
7. 04:20 PM - Ammeter vs. Voltmeter (Gary A. Boothe)
8. 04:29 PM - Ammeter vs. Voltmeter (Gary A. Boothe)
9. 04:33 PM - Re: Ammeter vs. Voltmeter (Crvsecretary@aol.com)
10. 04:36 PM - Re: re Mounting engine in 701? (Dave Austin)
11. 06:23 PM - ch601 HDS Nose Gear Bungees (Jeffrey Glasserow)
12. 06:28 PM - Re: re Mounting engine in 701? (scotty scotty)
13. 07:24 PM - Re: re Mounting engine in 701? (Chuck Deiterich)
Message 1
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| Subject: | Re: Mounting engine in 701? |
--> Zenith-List message posted by: "Larry Martin" <lrm@isp.com>
I just centered mine, left/right up/down. I figured it would be easier to
trim with elevator trim and use my spring loaded rudder petal rods to
actually trim the rudder. It takes several flights on no wind days to get
the rudder trimmed out to suit you. It would also be easy to put a bendable
trim tab on the rudder, like gyros do. It doesn't matter what you do, you
are going to have to trim it anyway, so why not start on a center line.
Just my opinion, Larry N1345L
----- Original Message -----
From: "scotty scotty" <scotty245@yahoo.com>
Subject: Zenith-List: Mounting engine in 701?
> --> Zenith-List message posted by: scotty scotty <scotty245@yahoo.com>
>
> I'm needing some advise on positioning the engine onto the mount. First i
went with an alternate engine, the Hirth F30 100hp 2cycle. As far as i
know(according to ZAC) this will be the first 701 with this combo...anyone
else? I tig welded my mount and after placing the engine onto the mount i
have less clearance for engine than i need to allow movement and vibration.
>
> ZAC recommended about 4 degrees downward and 4 degrees offcenter to
left(as sitting in plane), and said this may not have to be that precise...
i just want it to fly correctly. Not wanting to cut and patch the mount i
what to know what everyone thinks of sliding the entire engine approx 1/2"
to the left of centerline while keeping angles the same? The other
possiblility i have is going with only 2 degrees left.
>
> Lastly, what seems to be the best and simplest way to build the cowling,
all fiberglass, aluminum, or fiberglass front piece then the rest aluminum.
How difficult is it to get the fiberglass shape and look right?
>
> Scotty Armstead
> scotty245@yahoo.com
>
>
> ---------------------------------
>
>
Message 2
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| Subject: | Re: Mounting engine in 701? |
--> Zenith-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Scotty,
Assuming you're propeller rotates clockwise from the pilot's perspective,
the rear of the engine should be moved left, the engine centerline will
rotate right about the front 4-degrees.
Just moving the engine left won't get there, because the thrust line needs
to be changed to compensate for "p" factor. I'd modify the mount to
compensate. This is much better than having to rig your rudder to take up
the tendency to be in a turn. If your prop actually rotates
counter-clockwise, then, of course, the opposite applies.
From past experience, I find fiberglass much easier than the
aluminum-fiberglass construction. Polyester resin and fiberglass with Dzus
fasteners are my preference. A split half cowling is probably the easiest to
do because it's supported at the firewall and the halves reinforce each
other. Look at Tony Bingelis's "Sportplane Construction Techniques" on
fiberglass cowl construction. There are several ways to do the cowl. You'll
have to decide on which is for you.
Good luck,
Larry McFarland - 601HDS
Do not archive
----- Original Message -----
From: "scotty scotty" <scotty245@yahoo.com>
Subject: Zenith-List: Mounting engine in 701?
> --> Zenith-List message posted by: scotty scotty <scotty245@yahoo.com>
>
> I'm needing some advise on positioning the engine onto the mount. First i
> went with an alternate engine, the Hirth F30 100hp 2cycle. As far as i
> know(according to ZAC) this will be the first 701 with this combo...anyone
> else? I tig welded my mount and after placing the engine onto the mount
> i have less clearance for engine than i need to allow movement and
> vibration.
>
> ZAC recommended about 4 degrees downward and 4 degrees offcenter to
> left(as sitting in plane), and said this may not have to be that
> precise... i just want it to fly correctly. Not wanting to cut and patch
> the mount i what to know what everyone thinks of sliding the entire engine
> approx 1/2" to the left of centerline while keeping angles the same? The
> other possiblility i have is going with only 2 degrees left.
>
> Lastly, what seems to be the best and simplest way to build the cowling,
> all fiberglass, aluminum, or fiberglass front piece then the rest
> aluminum. How difficult is it to get the fiberglass shape and look right?
>
> Scotty Armstead
> scotty245@yahoo.com
>
>
> ---------------------------------
>
>
>
Message 3
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| Subject: | re Mounting engine in 701? |
--> Zenith-List message posted by: roy vickski <rvickski@yahoo.com>
Scotty,
My 4th edition plans 7-E-1 top drawing show 3 degrees
left for the rotax mount.
The middle drawing shows 107deg from firewall to bed
mount, referenced to drawing 7-F-15 top drawing,
indicates zero degree downthrust.
I incorporated zero down thrust for my mount.
My particular engine rotates opposite standard so I
have to angle my engine to the right. Does the Hirth
rotate clockwise or CCW when viewed from cockpit?
Which edition plans are you working from, how recently
were you told about 4 deg down thrust?
Curious
Roy
701 plans
engine plumbing and electrical, ect.
__________________________________
Message 4
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--> Zenith-List message posted by: "george may" <gfmjr_20@hotmail.com>
Have any other folks currently flying a 601XL experienced similar problems
as indicated by Joe E, requiring a beefer nose fork?
George May
Dont just search. Find. Check out the new MSN Search!
http://search.msn.click-url.com/go/onm00200636ave/direct/01/
Message 5
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| Subject: | Re: XL Front Fork Doubler |
--> Zenith-List message posted by: Bryan Martin <bryanmmartin@comcast.net>
on 12/11/04 9:20 PM, wizard-24@juno.com at wizard-24@juno.com wrote:
>
> The other thing (and I'm certainly no aerospace engineer) is that the fork
> shouldn't be subjected to that much stress, in that the bungee should be
> absorbing a great deal of the impact on landing.
>
My nose wheel fork bent on my first landing. There was a strong cross wind
and I landed in a side slip with a lot of right rudder. Since the nose wheel
steering is always active on this plane, the nose wheel touched down turned
sideways and bent the fork enough that the bolts holding it to the strut
rubbed a gouge in the tread of the tire.
I sent a note to Zenith and they replied back that they will be offering a
doubler and were tooling up for it. They said they will send me one as soon
as it's done. I received this reply in early November and haven't heard back
yet.
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
In Phase I testing.
do not archive.
Message 6
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| Subject: | Re: XL Front Fork Doubler |
--> Zenith-List message posted by: "george may" <gfmjr_20@hotmail.com>
Brian
Thanks for the update. Let us know when you hear again from Zenith that
the
doubler is ready. Looks like we all may need it
George
>From: Bryan Martin <bryanmmartin@comcast.net>
>Reply-To: zenith-list@matronics.com
>To: Zenith List <zenith-list@matronics.com>
>Subject: Re: Zenith-List: XL Front Fork Doubler
>Date: Sun, 12 Dec 2004 14:03:24 -0500
>
>--> Zenith-List message posted by: Bryan Martin <bryanmmartin@comcast.net>
>
>on 12/11/04 9:20 PM, wizard-24@juno.com at wizard-24@juno.com wrote:
> >
> > The other thing (and I'm certainly no aerospace engineer) is that the
>fork
> > shouldn't be subjected to that much stress, in that the bungee should be
> > absorbing a great deal of the impact on landing.
> >
>
>My nose wheel fork bent on my first landing. There was a strong cross wind
>and I landed in a side slip with a lot of right rudder. Since the nose
>wheel
>steering is always active on this plane, the nose wheel touched down turned
>sideways and bent the fork enough that the bolts holding it to the strut
>rubbed a gouge in the tread of the tire.
>
>I sent a note to Zenith and they replied back that they will be offering a
>doubler and were tooling up for it. They said they will send me one as soon
>as it's done. I received this reply in early November and haven't heard
>back
>yet.
>
>
>--
>Bryan Martin
>N61BM, CH 601 XL, Stratus Subaru.
>In Phase I testing.
>do not archive.
>
>
Message 7
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| Subject: | Ammeter vs. Voltmeter |
--> Zenith-List message posted by: "Gary A. Boothe" <gboothe@calply.com>
Hey Gang,
Can someone comment on the pros & cons of Ammeter vs. Voltmeter? I will be running
a WW Corvair Conversion (with alternator). Electronics will include pos. lights,
inst. lights, navcom,... pretty light duty.
Thanks
Gary Boothe
WW Corvair Power - 601HDS
Rudder complete, impatiently awaiting
Tail Kit
Message 8
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| Subject: | Ammeter vs. Voltmeter |
--> Zenith-List message posted by: "Gary A. Boothe" <gboothe@calply.com>
Sorry, Gang. Found all sorts of stuff in the archives!
Gary Boothe
WW Corvair Power - 601HDS
Rudder complete, impatiently awaiting
Tail Kit
Message 9
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| Subject: | Re: Ammeter vs. Voltmeter |
--> Zenith-List message posted by: Crvsecretary@aol.com
Hello Gary:
Voltmeter is MUCH easier to install. You can see the condition of the battery
and charging system with the voltleter - over 13.8 is a charging situation, less
than 13.8 is a charging problem.
Ammeters are difficult to install unless you have a shunt-type ammeter. An Ammeter
will tell you RATE of charge or discharge, but not anything else.
Just my two cents worth, YMMV.
Tracy
In a message dated 12/12/2004 7:18:38 PM Eastern Standard Time, "Gary A. Boothe"
<gboothe@calply.com> writes:
>--> Zenith-List message posted by: "Gary A. Boothe" <gboothe@calply.com>
>
>Hey Gang,
>
>Can someone comment on the pros & cons of Ammeter vs. Voltmeter? I will be running
a WW Corvair Conversion (with alternator). Electronics will include pos.
lights, inst. lights, navcom,... pretty light duty.
>
>Thanks
>Gary Boothe
>WW Corvair Power - 601HDS
>Rudder complete, impatiently awaiting
>Tail Kit
>
>
Message 10
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| Subject: | Re: re Mounting engine in 701? |
--> Zenith-List message posted by: "Dave Austin" <daveaustin2@sprint.ca>
Roy,
I have to ask where you are looking from?
If the prop turns anticlock from the pilot's seat, the rear of the engine is
moved to the starboard, (right), leaving the prop flange on the aircraft
centreline and pointing the engine to the left.
Dave Austin 601HDS - 912
Message 11
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| Subject: | ch601 HDS Nose Gear Bungees |
--> Zenith-List message posted by: "Jeffrey Glasserow" <jeffglass@starband.net>
I've got to replace the bungee(s) on my nosegear. I assume it uses #1080's,
but how many? Also, Aircraft Spruce has a #1080 HD (heavy duty) Would
there be any benefit to using these as replacements, or should I stay with
the specified 1080's?
Thanks in advance for your thoughts.
Jeff Glasserow
Message 12
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| Subject: | Re: re Mounting engine in 701? |
--> Zenith-List message posted by: scotty scotty <scotty245@yahoo.com>
Roy: I spoke with Sebastian about 2 weeks ago at ZAC reguarding the 4 degrees
downthrust(angle). My prints are older ones(2001) so i thought it best to ask.
I believe this helps the 701 to fly level with less control pressure or trim...maybe
someone else can help me here???
Yes, Dave the setup you referred to is what ZAC said. The Hirth's prop will swing
counter clock(from seat) and the rear of engine sits to right of centerline(from
seat). After working on the mount this afternoon, measuring, and a refresher
in trig on calculating angles, i have around 2.5 degrees. If this isn't
enough, would anything be hurt by swinging just the front(prop end) of engine
about 1/2 inch to left of centerline, which would get the full 4 degrees?
Thanks for all the input!
Scotty
roy vickski <rvickski@yahoo.com> wrote:
--> Zenith-List message posted by: roy vickski
Scotty,
My 4th edition plans 7-E-1 top drawing show 3 degrees
left for the rotax mount.
The middle drawing shows 107deg from firewall to bed
mount, referenced to drawing 7-F-15 top drawing,
indicates zero degree downthrust.
I incorporated zero down thrust for my mount.
My particular engine rotates opposite standard so I
have to angle my engine to the right. Does the Hirth
rotate clockwise or CCW when viewed from cockpit?
Which edition plans are you working from, how recently
were you told about 4 deg down thrust?
Curious
Roy
701 plans
engine plumbing and electrical, ect.
__________________________________
---------------------------------
Message 13
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| Subject: | Re: re Mounting engine in 701? |
--> Zenith-List message posted by: "Chuck Deiterich" <cfd@thegateway.net>
Scotty,
Almost three years ago, ZAC told me the thrust line for the 701 should be
between zero and one degree down and 3 degrees to the side (right for a
Jabiru). Mine is set at 1/2 down but I have to trim a lot down at full
power, one degree down may have been better.
Chuck D.
N701TX
----- Original Message -----
From: "roy vickski" <rvickski@yahoo.com>
Subject: Zenith-List: re Mounting engine in 701?
> --> Zenith-List message posted by: roy vickski <rvickski@yahoo.com>
>
> Scotty,
>
> My 4th edition plans 7-E-1 top drawing show 3 degrees
> left for the rotax mount.
>
> The middle drawing shows 107deg from firewall to bed
> mount, referenced to drawing 7-F-15 top drawing,
> indicates zero degree downthrust.
>
> I incorporated zero down thrust for my mount.
>
> My particular engine rotates opposite standard so I
> have to angle my engine to the right. Does the Hirth
> rotate clockwise or CCW when viewed from cockpit?
>
> Which edition plans are you working from, how recently
> were you told about 4 deg down thrust?
>
> Curious
> Roy
> 701 plans
> engine plumbing and electrical, ect.
>
>
> __________________________________
>
>
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