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Author Topic: 1960s Coupe d'Hiver Postal  (Read 168570 times)
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AAdamisin
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« Reply #925 on: April 05, 2021, 08:48:32 PM »

Can't wait until December!!!!...

I agree.  I will be ready!!

Archie Adamisin
Burlington, KY
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Archie Adamisin
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cvasecuk
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« Reply #926 on: May 25, 2021, 02:05:11 PM »

The best bit is the first bare bones assembly. Here is my Deuzio.
Ron
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OZPAF
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« Reply #927 on: May 25, 2021, 07:59:30 PM »

Beautiful work!

John
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Soc
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« Reply #928 on: May 26, 2021, 12:44:56 AM »

Baron Hunter

I decided to build this one because it uses 'B7406 f' for the wing section and has the same size prop as Ailbass.
I finished it last December but have only recently been able to start trimming.

It glides very well, climbs to a good height and is very stable.
What more can one ask ?
The trim still needs a few tweaks but it will be ready to go in June.

Sean
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Re: 1960s Coupe d'Hiver Postal
Re: 1960s Coupe d'Hiver Postal
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dosco
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« Reply #929 on: May 26, 2021, 08:42:03 AM »

The best bit is the first bare bones assembly. Here is my Deuzio.
Ron

Ron:
Nice bones.

Do you use a curved or flat building board for the wing (to account for the undercamber)?

Best-
Dave
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cvasecuk
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« Reply #930 on: May 26, 2021, 09:21:43 AM »

I've only got a flat board so use packing where necessary.
Ron
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skyrocket
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« Reply #931 on: May 26, 2021, 02:19:14 PM »

here is some more...
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Mark Braunlich
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« Reply #932 on: May 30, 2021, 08:20:28 PM »

The window for those competing in the 2020-2021 1960s Coupe d'Hiver Postal in the Southern Hemisphere opens 1 June and runs through the end of September 2021.   

Please let us see some photos of the "down under"  modellers, models and the flying of same.  Photos really help to fan the flames of interest and enthusiasm in this event.

Thank you.

Mark
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Mark
Soc
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« Reply #933 on: June 02, 2021, 09:04:02 PM »

'Baron Hunter' a C d'H design by Lennart Flodstrom, is described in 5/68 Modellflygnytt, the Swedish magazine.

I had thought that it was mentioned some years back in this thread or the previous one.
However I can't find a post like that and the Forum search tool turns up nothing either.

The magazine can be found here : https://rcbookcase.com/categories.php?publisher_id=13&page=3

Some of the dimensions on the drawing are inconsistent.
However the proportions indicate a wing chord of 115 and a tail chord of 80.
If you print the drawing to get full size sections, the rest is 1/6 full size.

Here in Melbourne we were looking forward to the 60's Coupe season but a Cov19 lock down has postponed that.
Some quite nice weather is passing by unused !

Sean

An indirect search just now reveals that Mark posted the drawing in this thread back in 2014
so my memory is not failing quite as fast as I feared.
« Last Edit: June 02, 2021, 09:22:46 PM by Soc » Logged
AAdamisin
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« Reply #934 on: June 07, 2021, 04:16:12 PM »

The best bit is the first bare bones assembly. Here is my Deuzio.
Ron

Beautiful bones!!  Deuzio is quite a nice looking bird!!

Archie Adamisin
Burlington KY
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Archie Adamisin
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AAdamisin
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« Reply #935 on: June 07, 2021, 04:18:09 PM »

Baron Hunter

I decided to build this one because it uses 'B7406 f' for the wing section and has the same size prop as Ailbass.
I finished it last December but have only recently been able to start trimming.

It glides very well, climbs to a good height and is very stable.
What more can one ask ?
The trim still needs a few tweaks but it will be ready to go in June.

Sean

Great work on the Baron Hunter.  That foil sure looks like it will float nicely.  Can't wait to hear how it performs under torque. 

Archie Adamisin
Burlington KY
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Archie Adamisin
Burlington, KY
AAdamisin
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« Reply #936 on: June 07, 2021, 04:21:15 PM »

here is some more...

Very Nice Models!!  Have these been flown?  Both those are on my short list. 

Archie Adamisin
Burlington KY
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Archie Adamisin
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Mark Braunlich
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« Reply #937 on: June 09, 2021, 11:32:50 AM »

Now on Outerzone....

https://outerzone.co.uk/plan_details.asp?ID=13074
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« Reply #938 on: June 09, 2021, 01:39:26 PM »

I'm looking forward to participating this year with my newly finished Ailbass.

I understand that electronic D/T timers are not allowed. It won't be hard to install a viscous timer for the Postal.

I'm hoping that a slight change I made to the wing mount -going with a bamboo skewer in aluminum tube, instead of plywood tongue and box shown on the plans- won't disqualify it.

How about the Walston tracker? Should it be removed for the Postal flights?

--Ates
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AAdamisin
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« Reply #939 on: June 10, 2021, 06:59:53 AM »

I'm looking forward to participating this year with my newly finished Ailbass.

I understand that electronic D/T timers are not allowed. It won't be hard to install a viscous timer for the Postal.

I'm hoping that a slight change I made to the wing mount -going with a bamboo skewer in aluminum tube, instead of plywood tongue and box shown on the plans- won't disqualify it.

How about the Walston tracker? Should it be removed for the Postal flights?

--Ates

Very nice build.  You will be nice and practiced up for the winter postal. 

Archie Adamisin
Burlington, KY
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Archie Adamisin
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skyrocket
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« Reply #940 on: June 10, 2021, 08:40:11 AM »

Atesus...nice looking model...always loved R.J designs...his Wakefields are beautiful and make nice half size flyers...
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« Reply #941 on: June 10, 2021, 08:46:29 AM »

I see no reason not to use a tracker - not mentioned in the rules. I confess I also use a Tomy DT
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atesus
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« Reply #942 on: June 11, 2021, 01:49:39 PM »

Thank you gentlemen. As it stands, the fuselage sustained some minor damage from a blown motor, as I was walking to the flight line after winding hard-ish. Nothing major though. One problem I discovered on the first day of trimming was that the 10g 8x 1/8" motor was too short compared for the hook to peg distance, so the tensioner was not properly operating. Consequently the prop was acting as an airbrake at the end of the motor run, causing quite a bit of altitude loss. While patching up the fuselage, I'll move the peg two bays forward and retry. That will also help me reduce the added nose weight and get closer to 70g. Right now the airframe weighs ~74g.

This model has a projected wing area of just under 150 sq.in. which makes it legal for the Small Nostalgia class we fly in the US. I'll probably fly that event with a bit more rubber than 10g.

Atesus...nice looking model...always loved R.J designs...his Wakefields are beautiful and make nice half size flyers...

I have a superbly prepared kit for Surpriz Wakefield, the older sister of the Ailbass, by Hummingbird Model Products. I'm hoping to get to that someday. How soon, not sure given the ever expanding build queue Smiley.

--Ates
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cvasecuk
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« Reply #943 on: June 12, 2021, 08:05:01 AM »

And here is my Deuzio with clothes on. Hopefully It will be trimmed by December!!
Ron
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billdennis747
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« Reply #944 on: June 12, 2021, 09:10:25 AM »

Very nice Ron. Has it got a tracker and tomy and how close is it to 70g? The colours are nice and vibrant - is it the new tissue?
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cvasecuk
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« Reply #945 on: June 12, 2021, 10:08:22 AM »

I was hoping nobody would ask about the weight! It has a Tomy and with a tracker and RTF it unfortunately is a portly 95g. How that came about I have no idea. The tissue is Esaki but I always put a final coat of Banana Oil which brings out the colour as well as extra damp proofing, which is needed in Cornwall.
Ron
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Mark Braunlich
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« Reply #946 on: June 12, 2021, 10:58:22 AM »

Rules reminder


•   The D/T function should, if possible, be provided with whatever was used on the original for the timing function.  A mechanical timer may only be used if there is shown to exist, documentation that such a timer is appropriate to the airframe in question during the 1960s or if a burning fuse type is illegal in your locale.  Viscous timers are also permitted.
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« Reply #947 on: June 12, 2021, 02:06:44 PM »

Nice Coupe, Ron  Smiley
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AAdamisin
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« Reply #948 on: June 18, 2021, 01:00:25 PM »

Thank you gentlemen. As it stands, the fuselage sustained some minor damage from a blown motor, as I was walking to the flight line after winding hard-ish. Nothing major though. One problem I discovered on the first day of trimming was that the 10g 8x 1/8" motor was too short compared for the hook to peg distance, so the tensioner was not properly operating. Consequently the prop was acting as an airbrake at the end of the motor run, causing quite a bit of altitude loss. While patching up the fuselage, I'll move the peg two bays forward and retry. That will also help me reduce the added nose weight and get closer to 70g. Right now the airframe weighs ~74g.

This model has a projected wing area of just under 150 sq.in. which makes it legal for the Small Nostalgia class we fly in the US. I'll probably fly that event with a bit more rubber than 10g.

Atesus...nice looking model...always loved R.J designs...his Wakefields are beautiful and make nice half size flyers...

I have a superbly prepared kit for Surpriz Wakefield, the older sister of the Ailbass, by Hummingbird Model Products. I'm hoping to get to that someday. How soon, not sure given the ever expanding build queue Smiley.

--Ates

This is a very interesting question.  What is everyone using for hook to peg distance on coupe?  I used 1/8" (6) loops or 12 strand in my Elyea and French coupe.  Hook to peg is about 11in.  I have a crocket hook in front that shortens that a bit as well.  Perfect world 120in motor strand makes 10g.  So 60in loop is 6 loops 10in long. 

My prop stop mechanism worked nicely at this length.  I do know that others seem to be using less loops/ strands than what I did. 

There is a bunch of varying lengths on some of these older models which are most likely due to rubber availability and setup preference.  I know that the french coupe clearly said 30sec motor run on the 16 x 22 (1) blade prop.  Mine ran 45 to 50sec on 375 turns and 15inoz. 

Look forward to hearing about others input.

Archie Adamisin
Burlington, KY
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Archie Adamisin
Burlington, KY
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