Today's Message Index:
----------------------
1. 01:30 AM - Re: Which Of Two STOL CH7XX Building Choices? (mcjon77)
2. 04:38 AM - Re: Re: UL 260 Engine (Iberplanes IGL)
3. 08:44 AM - Re: Re: Which Of Two STOL CH7XX Building Choices? (Bryan Martin)
4. 12:51 PM - FW: EAA 1423 Fall Flyin (George Tamvakis)
5. 01:40 PM - Re: 601 HDS bungees (Grant Corriveau)
6. 02:12 PM - 601XL Tail Light Kit For Sale (Dave VanLanen)
7. 11:35 PM - Stupid Instrument Question (LHusky@aol.com)
Message 1
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| Subject: | Re: Which Of Two STOL CH7XX Building Choices? |
This really is fascinating. I never noticed it before, but the continuous hp of
the 2300 redrive is the same as the 2300 direct drive. So, basically, the redrive
at best gives a quick 20-25hp boost for a few minutes, but after that I
am flying with the same hp that I would have with a direct drive engine of the
same size, I am just able to swing a bigger prop.
So Joe, when you warned about using the max hp for redrive VW at gross continuously
(how I would wind up burning through cylinder heads quickly) it is really
no different than running the 2180cc direct drive VW that I plan on putting
in my sonex at the same abnormally high hp. It will cause additional stress on
the engine and create early wear. I always wondered how a redrive could just
magically create additional hp, seemed like getting something for nothing, now
I (hopefully) have a better understanding.
Roger, I agree about not needing more than 65hp. IIRC, for several years the factory
demo CH701 was run on a 2 stroke rotax 582 and did just fine. The redrive
may still be a good option if only by letting me use a larger prop. Both
the 701 and my future aerovee (2180 VW)powered sonex have the same gross, so there
shouldn't be much of a problem staying in the air with only 70hp continuous.
good info. It definitely answers some questions.
Jon
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 9807#209807
Message 2
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| Subject: | Re: UL 260 Engine |
Hi there!
there is one in the UK, maybe he is on the list. I already have one Jab
3300 for my XL but we are building two and the owner of the other AC thinks
the UL is the way to go. I have my doubts given the fact that it is new, no
FFW package, probably no ZAC support and nobody on the lists to give first
hand impression on an 601.
Thanks a lot to all of you for the responses.
PS: The engine I believe is manufactured in Belgium
--
Alberto Martin
www.iberplanes.es
Igualada - Barcelona - Spain
----------------------------------------------
Zodiac 601 XL Builder
Serial: 6-7011
Tail Kit: Finished
Wings: Not Started
Fuselage: Ordered
Engine: Jabiru 3300
Message 3
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| Subject: | Re: Which Of Two STOL CH7XX Building Choices? |
The maximum continuous power an engine can deliver depends on the
engine itself and its cooling system, the presence or absence of a
redrive is irrelevant. Whether or not it can actually be operated at
that power level MAY depend on whether or not it has a redrive.
A redrive doesn't allow any engine to produce more power at a
particular RPM and torque, but you may not be able to operate a direct
drive engine at a that RPM because the propeller would have to be too
small to be practical. A redrive may allow you to use more of the
engine's available power by running it at the higher RPM while turning
a suitable prop at a lower RPM. Or a redrive can allow you to use a
larger, more efficient prop at the same engine RPM and thereby get
more thrust at the same power setting.
The main effect of a redrive is to give you more thrust, not more
power; and thrust is, ultimately, what drives the airplane through the
air.
On Oct 22, 2008, at 4:29 AM, mcjon77 wrote:
>
> This really is fascinating. I never noticed it before, but the
> continuous hp of the 2300 redrive is the same as the 2300 direct
> drive. So, basically, the redrive at best gives a quick 20-25hp
> boost for a few minutes, but after that I am flying with the same hp
> that I would have with a direct drive engine of the same size, I am
> just able to swing a bigger prop.
>
> I always wondered how a redrive could just magically create
> additional hp, seemed like getting something for nothing, now I
> (hopefully) have a better understanding.
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
Message 4
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| Subject: | FW: EAA 1423 Fall Flyin |
________________________________
From: George Tamvakis
Sent: Wednesday, October 22, 2008 7:04 AM
Pres.EAA Ch#1176; Bo Gamble Pres. EAA Ch#1386 Grantham; Charlie Hall
Pres. EAA Ch#8 (gocsta@yahoo.com); David McInnis Pres. EAA Ch#297
Burgaw; David Williams EAA#1114; Denny Mercer Pres. EAA Ch#1114 Apex;
Donnie Boyette Pres. EAA Ch#1047 Wilson (kdaughety@nc.rr.com); Douglas
Pres. EAA Ch#731 Teague; 'Eaa 1278'; 'Eaa 1377'; 'EAA 1423 George
Tamvakis'; 'Eaa 156'; 'Eaa 339 '; Jack Neubacher Pres. EAA Ch#1083 RUQ;
Jacob Rhodes Pres. EAA Ch#1199 MRN; John Wigney Pres. EAA Ch#309 CLT
(bill@repucci.com); Joseph Clark Pres. EAA Ch#960
(president@eaa960.org); Marion Todd Pres. EAA Ch#1016 AVL
(eaa1016@yahoogroup.com); Robert Parker Pres. EAA Ch#506 JNX
(rjmancusi@earthlink.net); Roland Gilliam Pres. EAA Ch#1220 Carthage; S
C Parker Editor EAA Ch#1118 Bladenboro; Steven Pearce Pres. EAA Ch#879
Durham; Terry Deeb Pres. EAA Ch#1171EWN; Thomas Hagan Pres. EAA Ch#497
Franklin; Tom Freeman
Subject: EAA 1423 Fall Flyin
I just wanted to take a minute to remind all of you that this coming
Saturday October 25th EAA 1423 out of Winterville NC will be hosting our
second annual Fall Flyin. We are a young EAA chapter that is based out
South Oaks Aerodrome in Winterville NC and we hope that you will post
this with your members. We are looking forward on meeting all of you and
seeing again some of you.
Our web site is www.eaa1423.org <http://www.eaa1423.org/> and
www.southoaksaerodrome.org <http://www.southoaksaerodrome.org/> were
you can get more information and directions, the Flyin will start at
10:00 am until the last one leaves.
Again thanks for all you support
George Tamvakis
EAA 1423
Message 5
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| Subject: | Re: 601 HDS bungees |
Leo - thanks. I ordered them at ACS - but my link shows 35$US each
for the 1080HD. fwiw
<http://www.aircraftspruce.com/catalog/lgpages/
shock_rings.php> size
1080HD for $19.30 each.
I searched the archives and I think that in the past some builders
had problems but it might have involved subbing a 1080 non-HD?
(stretchier?), or a 1280HD (3/4" thick vs. 5/8") ...
At the same time I'm installing Mac Machine's lower gear plate
upgrade (to 1/8" by 90mm) and the plastic bearings top and bottom on
the struts.
Does anyone happen to have any good sequential instructions for
changing out the bungees? It's been a long time since I assembled
all that and I did it on a work bench. I'm not looking forward to
doing it now from under the plane, in a 'dirty' gear box with
accumulated dust and grease...
You can be sure I thought deeply about changing the whole thing over
to one of the spring/steel legs ala XL but... $$$ and total weight
tipped the scales back to the original gear legs.
Thanks all
Grant
601HDS GHTF
Message 6
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| Subject: | 601XL Tail Light Kit For Sale |
I decided to install a different lighting system on my 601XL, so I will not
be using the rudder tail light assembly that I got with my kit.
According to the Zenith website, the cost of the tail light kit (8002TL) is
$72.80. If you are interested, I will ship it to you for $40 in the US, (if
out-of-country, I'll need to determine shipping costs first). I also have
the fiberglass tail light bracket (FTB), which I will include for no
additional charge, (it is not the best quality, but with some work it could
be used, or if you don't want to use it you could order another from Zenith
for $20.80 + shipping).
E-mail me off-list if you are interested.
Thanks,
Dave Van Lanen
Do Not Archive
Message 7
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| Subject: | Stupid Instrument Question |
OK, looking at the back of my Turn Coordinator, there is a 3 pin connector.
There are 2 pins on top and 1 pin on the bottom. A is Positive, B is
Aircraft Ground and C is not used. Which pin is A and B. I think A is the
top
right and B is top left, but I want to be sure. Thanks for the help.
Larry Husky
Madras, Oregon
Working on Panel.............
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