chino_2005

Hi, I´m from Argentina an I´m building a Curare from MAN plans.
Here there are some photos.
I hope you enjoy my progress and advise me if I´m doing something wrong. I am trying to do the Curare as per plans, without any modification.
Thank you!<o></o>

chino_2005

Some photos of the MAN plans.

chino_2005

First I have to copy the different parts of the Curare and see how the accessories fit in.<o></o>

chino_2005

chino_2005

chino_2005

Working on the fuel tank.

chino_2005

Cutting bulkheads and other pieces from Finnish plywood.<o></o>

chino_2005

chino_2005

Working on the workbench. It is very importantto have a perfectly flat surface. I have tried different volts and hardware.<o></o>

chino_2005

My first attempt at cutting foam.<o></o>

chino_2005

Going pro... foam cutting machine from scratch!

chino_2005

Let´s try it with the stabilizer.

dhal22

Quite a nice start. Please keep going.

chino_2005

Thank you David!

chino_2005

Now with the wings.

chino_2005

Working on landing gear bay.

chino_2005

A video of landing gear operation with restrictor´s valves.

RCFlyerDan

My Feedback: (54)

Hey! May I suggest a buddy of mine here in the USA that already has the Curare in CAD and can laser cut you the parts to any size that you need. He cut me a kit and I enlarged the plane to an 80 inch wing span. I have it started, but it isn't on the work table now. Please look at his site. He speaks Spanish too.
http://a-mmodels.com/

EscapeFlyer

My Feedback: (1)

WHOA!!!!

Love the foam cutter! Could you explain more about the construction?

My questions are:

1- How much weight did you use to pull the cutter? (How do you know how much to use?)

2- How do you know where to place the pulleys to set it at the right cutting speed?

Great job building this wing! I am greatfull to people producing these threads that show us these techniques!

Subscribed!

Brian

hook57

My Feedback: (21)

Real nice start to a fine pattern plane Chino. Keep it going and keep us posted! Subscribed.

Mark

chino_2005

Hi,<o></o>

RCFlyerDan, thank you for your offering! but I prefer to cut the pieces by myself.<o></o>

<o></o>

Ilikebipes, I´ve used materials that I´ve found inArgentina, like pulleys, aluminum angles, etc. It is very easy and cheap to build the foam cutter. If you need more photos I can send you. The bow is hanging my neighbor´s balcony, ja! He don´t know that…<o></o>

For the weight look atthe video and you´ll see two wrenches (6” aprox), it is enough and the temperature of the cable made the rest, I only increase the current until it starts to vibrate. It travel very smooth and it worked very well at first try. <o></o>

For distance, I have a nExcel program where I have to put the root and tip chords and the distance between them and by trigonometry it give me the exact distance. Then I try to adjust the distance by try an error until it travel moving the cutter with the wing in place and see how start and how it finish. With only minor changes I can get the right distance.<o></o>

Look at this video, isin Spanish but it is self explaining:<o></o>

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http://modernhmong.com/?w=cortador+foam&button=Search

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Hope this help, and sorry my English, maybe it´s not very good.

<o></o>

Regards,<o></o>

Chino<o></o>

chino_2005

Thank you Hook57! I´m pretty advanced with the construction right know, so I´ll add more photos when I can.<o></o>

MTK

Brian, and all,

It's a simple ratio of arcs (partial circumferences) I have an excel file that will take you to many different ratios of root to chord. I think I have the formula in there too so you can do custom stuff.

I built my rig many years ago and lost it in the various moves. Just recently re-built it and it's simpler yet. The power supply is the cheap but very functional Ruttan inspired set-up that Aircraft Spruce sells. The bow is a simple fiberglass flag rod that Home Depot sells...the 6 foot variety.

It is a hands off set-up. It only takes a 2 lb weight to produce very good results for the very high tapered stuff I like in my designs. 3:1 root to tip ratio is typical; 22" root 7" tip

Any old style wings are much much easier to cut because the root to tip is no more than about 1.6:1

Well, on second thought, it's simple to me. I've been doing this since 1968, so my apologies in advance if I sound as tho I'm talking down.

chino_2005

Sheeting wing and stabilizer.

crankpin

My Feedback: (15)

Thanks for this thread, Chino. Lot of us following along.

Crank