Also, the aluminium wing joiners seems a bit flimsy. Is it a good idea to
replace them with some stronger/bigger tubes?
The 120 glow 4-stroke will be too small. The 40cc gasoline (PETROL)
engine will be too large. I think the 21 cc gasoline engine will be a
prefect match. It will fly the plane in a very scale-like manner.
You'll also probably need the nose weight the weedeater-type will
provide.
> Also, the aluminium wing joiners seems a bit flimsy. Is it a good
idea to
> replace them with some stronger/bigger tubes?
This plane isn't very aerobatic or fast. Unless it seems REALLY weak,
leave it as is.
As for the wing joiners... they're fine as the wing struts take most of the
flight loads. I used 8mm aluminium alloy tubes for the struts, anchoring
them with some hefty brackets into the wings. Similarly the fixing to the
fuselage was stronger than the plan as well.
--
Philip Rawson
www.flymodels.co.uk
www.aeromodeller.org
"Jon-Magne Johansen" <jon-mj@no_online_spam.no> wrote in message
news:ct8jdq$8bh$1...@services.kq.no...
Mine was... ever seen a Champ prop-hang? or do a rolling circle... or an
inverted low pass 3' off the runway? Granted mine had a couple of tweaks...
changed the wing section and fitted a 45cc petrol...
--
Philip Rawson
www.flymodels.co.uk
www.aeromodeller.org
<Dr1D...@aol.com> wrote in message
news:1106766686....@c13g2000cwb.googlegroups.com...
Hei Jon-Magne!
I have a Champ in similar state... I do have the the building manual though.
I could scan it if you're interrested.
????
21cc is 1.28 ci. The 120 glow is 1.2 ci. Is the gasoline fueled 1.28
really that much more powerful than the 120 4-stroke?
--
Charlie Funk
Just Cruisin' Plus
800 888-0922
615 833-0922
www.justcruisinplus.com
We prefer the MasterCard card
<Dr1D...@aol.com> wrote in message
news:1106766686....@c13g2000cwb.googlegroups.com...
"TNA" <airbati...@TOMAILonline.no> skrev i melding
news:ctah21$nbt$1...@services.kq.no...
Are these prototypical, scale-like maneuvers the full size Aeronca
could perform?
I fitted a 3W Twin methanol engine (2 x 24 cc) 5 hp.
Very realistic sound in it and enough power for glidertug.
For balancing I needed 150 gr. in the tailsection.
She's an oldie (1985) but still love her.
Don't suppose so... then again, I've never had a go in a full size one.
Jimmy Franklin's Waco can, but I don't know if "prop hang" is technically
correct. Works for me, though :)
IIRC the late Turbo Raven could...right up until the gear
box failed and it pancaked doing a vertical landing.
--
Nefarious Necrologist 42nd Degree
Some people ride, some just like to show off their butt
jewelry once in a while.
Dum vivimus, vivamus
<:(3 )3~ <:(3 )3~ <:(3 )~ <:(3 )~
>Don't suppose so... then again, I've never had a go in a fulÂl size
one.
The Aeronca 7AC Champ had 65 hp, making it a slow (85 mph) and
low (poor climb) airplane. No aerobatics other than spins; there wasn't
enough power to get serious. Even with 85 hp it wasn't aerobatic. The
most powerful brothers to this airplane have 180 hp and would never
prop-hang.
Dan (lots of real Champ time)
Takes an even better weight-to HP ratio than that. An aircraft
engine might be expected to produce three or four pounds of thrust per
hp at full throttle. Even the newest really powerful aerobatic
airplanes with 400 hp or so and grossing around 1800 lb (at a guess)
can't hover or maintain vertical climb. The best I've seen was the YAK
55 with the geared 360 hp radial, and it could do some awesome stuff.
The gearing of the prop does it: a large-diameter, slow-turning prop
gets more thrust per hp, while allowing the engine to rev higher and
generate more horses, since hp is a function of torque x RPM. And a
geared engine produces more hp per pound of engine weight, so the
airplane can be lighter.
Dan
--
Algimantas
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Graphik60
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Is there any possibility that you still have the build manual for this
kit,
as I have bought a 1/4 scale kit on e-bay and although it would appear
to be complete, I see that there is no building manual and no engine
cowling.
If a build manual was available, I would be pleased to repay any
expense that you may have in copying it.
Regards and thanks.
John Sangster
Bix House
27 Windsor Road
Bray
Berkshire
SL6 2EW
U.K.
johnsa...@msn.com
--
bentleyblower
------------------------------------------------------------------------
bentleyblower's Profile: http://www.rcgroups.com/forums/member.php?u=257535
Hi Bill
I also tried to contact the chap from 2005 who seems to be Norwegian,
as I also need a build manual. I also need an engine cowling if you
know where this would be available.
Kind regards and thanks
John Sangster (Berkshire. UK)
johnsa...@msn.com
--
bentleyblower
------------------------------------------------------------------------
bentleyblower's Profile: http://www.rcgroups.com/forums/member.php?u=257535
Cowl, under Hobby Lobby
http://www.fiberglassspecialtiesinc.com/catalog.htm
mk
Might try here:
http://www.stansfibertech.com/
mk
I'm in dire need of that building manual myself. Could you scan one for
me?
--
hangfire
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