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Precedent Aeronca Champ 1/4 scale

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Jon-Magne Johansen

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Jan 26, 2005, 12:21:40 PM1/26/05
to
I recently got hold of a Precedent Aeroncha Champ 1/4 scale kit. The
previous owner had partially built the fuselage, but it is not finished.
I did not get the building manual, so i do not have much information of this
kit.
What size of engine will be suitable? I have 3 engines that maybe will fit;
-SC 120 4-stroke
-21cc pertrol, weedeater conversion
-40cc pertol, chain saw conversion

Also, the aluminium wing joiners seems a bit flimsy. Is it a good idea to
replace them with some stronger/bigger tubes?

Dr1D...@aol.com

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Jan 26, 2005, 2:11:26 PM1/26/05
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> -SC 120 4-stroke
> -21cc pertrol, weedeater conversion
> -40cc pertol, chain saw conversion

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.

thro.my website@www.flymodels.co.uk Philip Rawson

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Jan 26, 2005, 8:59:31 PM1/26/05
to
I built one and fitted a Zenoah 45. It needed about 10oz of lead in the tail
to balance it... It's still giving good service as a glider tug. I would say
a Zenoah 26 would suit the plane perfectly. you should consider either the
120 4 stroke or the 21cc petrol.

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
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thro.my website@www.flymodels.co.uk Philip Rawson

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Jan 26, 2005, 9:01:54 PM1/26/05
to
>
> This plane isn't very aerobatic or fast. Unless it seems REALLY weak,
> leave it as is.
>

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

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TNA

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Jan 27, 2005, 5:52:40 AM1/27/05
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"Jon-Magne Johansen" <jon-mj@no_online_spam.no> skrev i melding
news:ct8jdq$8bh$1...@services.kq.no...

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.


Charlie Funk

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Jan 27, 2005, 10:00:36 AM1/27/05
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>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.

????

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
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Jon-Magne Johansen

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Jan 27, 2005, 10:20:36 AM1/27/05
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Yes, that would have been nice. Thanks.

"TNA" <airbati...@TOMAILonline.no> skrev i melding
news:ctah21$nbt$1...@services.kq.no...

Dr1

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Jan 27, 2005, 2:21:40 PM1/27/05
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Philip Rawson wrote:
> 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...

Are these prototypical, scale-like maneuvers the full size Aeronca
could perform?

Dr1

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Jan 27, 2005, 2:25:02 PM1/27/05
to
The weedeater is not more powerful, but it will allow you to swing a
larger, flatter pitch prop at a lower RPM. Perfect for this plane.

sammyrod

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Jan 27, 2005, 8:23:22 PM1/27/05
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"Jon-Magne Johansen" <jon-mj@no_online_spam.no> schreef in bericht
news:ct8jdq$8bh$1...@services.kq.no...

>I recently got hold of a Precedent Aeroncha Champ 1/4 scale kit.>>>>>>>

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.


thro.my website@www.flymodels.co.uk Philip Rawson

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Jan 27, 2005, 8:52:23 PM1/27/05
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"Dr1" <Dr1D...@aol.com> wrote in message
news:1106853700.9...@z14g2000cwz.googlegroups.com...

Don't suppose so... then again, I've never had a go in a full size one.

Storm's Hamburgers

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Jan 27, 2005, 9:01:04 PM1/27/05
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"Philip Rawson" <please.contact.me thro.my web...@www.flymodels.co.uk>
wrote in message news:rVgKd.2011$f07...@newsfe5-gui.ntli.net...
I wonder what current full scale planes can prop hang?
mk


John Alt

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Jan 28, 2005, 10:48:48 AM1/28/05
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"Storm's Hamburgers" <storms@hometowncomputing> wrote in message
news:10vj76p...@corp.supernews.com...

>
> I wonder what current full scale planes can prop hang?
> mk

Jimmy Franklin's Waco can, but I don't know if "prop hang" is technically
correct. Works for me, though :)


Keith Schiffner

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Jan 28, 2005, 5:45:53 PM1/28/05
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"John Alt" <JohnAltDoe...@charter.net> wrote in
message news:IdtKd.1026$G27...@fe06.lga...


IIRC the late Turbo Raven could...right up until the gear
box failed and it pancaked doing a vertical landing.


--
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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 )~


Dan_Thom...@yahoo.com

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Jan 28, 2005, 8:25:48 PM1/28/05
to
> Are these prototypical, scale-like maneuvers the full size­ Aeronca
> could perform?

>Don't suppose so... then again, I've never had a go in a ful­l 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)

Paul Ryan

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Feb 3, 2005, 11:26:50 PM2/3/05
to
I think it takes a power to weight ratio of about 7 lb/hp ( actually
a weight to power ratio...) to climb vertically (continuously), and
probably less than five lb/hp to be comfortable for hovering, torque
rolls, etc. This is because, to hover reliably, you have to have enough
power to have the engine down in the linear part of the torque curve,
not at the peak, where it flattens off. Our brains just naturally like
nice linear relationships between input and output. Since the throttle
is your primary control here, it's nice (necessary in my case) to have
at least this control in a linear range.
Remember, I'm on your side
-Paul

Dan_Thom...@yahoo.com

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Feb 4, 2005, 11:47:42 AM2/4/05
to
> I think it takes a power to weight ratio of about >7 lb/hp (
actually
>a weight to power ratio...) to climb vertically
>(continuously), and
>probably less than five lb/hp to be comfortable for >hovering, torque
>rolls, etc.


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

Paul Ryan

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Feb 5, 2005, 2:09:02 AM2/5/05
to
Actually- getting back to which planes can torque roll- didn't the
Suhkoi prove capable of it in the hands of that Lithuanian pilot whose
name I forget, or never knew. He did a stunt where he'd fly under
these stone bridges inverted in Lith. or Russia, then torque roll for a
while low over the water, then climb out vertically. Try that...
Paul

Algimantas

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Mar 10, 2009, 8:32:24 AM3/10/09
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Paul Ryan Wrote:
> Lithuanian pilot
Jurgis Kairys http://www.jkairys.com/


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Graphik60

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Mar 13, 2009, 10:52:12 AM3/13/09
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Hi There
I just bought a Precedent Aeronca Champ 1/4 scale fully kitted out
with R/C gear and Super TIgre 2300 (23cc 2 stroke, 18 x 10 prop). I was
wondering if anyone had a copy of the build manual from Precedent.
I note there was a thread of this name back in 2005 where somoe guest
offered a copy but I cannot contact that person.
Regards
Bill (Ireland)


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bentleyblower

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Mar 26, 2009, 10:35:27 AM3/26/09
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Dear Sir

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


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bentleyblower

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Mar 26, 2009, 10:40:47 AM3/26/09
to

Graphik60 Wrote:
> Hi There
> I just bought a Precedent Aeronca Champ 1/4 scale fully kitted out
> with R/C gear and Super TIgre 2300 (23cc 2 stroke, 18 x 10 prop). I was
> wondering if anyone had a copy of the build manual from Precedent.
> I note there was a thread of this name back in 2005 where somoe guest
> offered a copy but I cannot contact that person.
> Regards
> Bill (Ireland)

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


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MJKolodziej

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Mar 26, 2009, 12:26:26 PM3/26/09
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"bentleyblower" <bentleyblo...@rcgroups.com> wrote in message
news:bentleyblo...@rcgroups.com...


Cowl, under Hobby Lobby

http://www.fiberglassspecialtiesinc.com/catalog.htm
mk


MJKolodziej

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Mar 26, 2009, 12:28:02 PM3/26/09
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"bentleyblower" <bentleyblo...@rcgroups.com> wrote in message
news:bentleyblo...@rcgroups.com...
>

http://www.fiberglassspecialtiesinc.com/catalog.htm

Cowls here,
mk


MJKolodziej

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Mar 26, 2009, 12:30:10 PM3/26/09
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"MJKolodziej" <mjmwcsREMOV...@htcomp.net> wrote in message
news:gqgabk$snc$1...@news.motzarella.org...


Might try here:
http://www.stansfibertech.com/

mk


hangfire

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Aug 6, 2010, 8:17:12 AM8/6/10
to

> I have a Champ in similar state... I do have the the building manual
> though.
> I could scan it if you're interrested.
>

I'm in dire need of that building manual myself. Could you scan one for
me?


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grobo03

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Sep 20, 2013, 8:18:02 PM9/20/13
to
replying to TNA , grobo03 wrote:
> airbaticREMOVE wrote:
>
> "Jon-Magne Johansen" <jon-mj@no_online_spam.no> skrev i melding
> news:ct8jdq$8bh$1...@services.kq.no...
> this
> fit;
> 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.




Hi, Do you have the actual plans for the CHAMP. I will pay all costs if
you could supply a copy.
Thanks
Graeme

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grobo03

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Sep 21, 2013, 10:18:02 PM9/21/13
to
replying to TNA , grobo03 wrote:
> airbaticREMOVE wrote:
>
> "Jon-Magne Johansen" <jon-mj@no_online_spam.no> skrev i melding
> news:ct8jdq$8bh$1...@services.kq.no...
> this
> fit;
> 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.




--
Hi,
If you still have the manual/plans I would love a fresh copy. Will of
course pay any costs attached.
Best wishes
Graeme

g_ro...@btinternet.com

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Feb 19, 2014, 10:24:23 AM2/19/14
to
Hi,
Could you supply me a copy of the Manual. I will cover any costs.
Best wishes
Graeme

g_ro...@btinternet.com

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Feb 19, 2014, 10:25:32 AM2/19/14
to
On Thursday, 27 January 2005 15:20:36 UTC, Jon-Magne Johansen wrote:
> Yes, that would have been nice. Thanks.
>
> "TNA" <airbati...@TOMAILonline.no> skrev i melding
> news:ctah21$nbt$1...@services.kq.no...
> >
> > "Jon-Magne Johansen" <jon-mj@no_online_spam.no> skrev i melding
> > news:ct8jdq$8bh$1...@services.kq.no...
> >> I recently got hold of a Precedent Aeroncha Champ 1/4 scale kit. The
> >> previous owner had partially built the fuselage, but it is not finished.
> >> I did not get the building manual, so i do not have much information of
> > this
> >> kit.

Hi,
Did you get a copy of the manual.
If so could you forward a copy to me.
I will gladly cover any costs.
Best wishes
Graeme

bvfan

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Jun 21, 2020, 12:18:02 PM6/21/20
to
replying to TNA, bvfan wrote:
Have you still got the manual. If you have, then I would really appreciate a
scanned copy.
Regards,
Charles.

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