my canard dream

[tomwang]

main gear bow

[Spodman]

I spend a fair bit of time dreaming about the elevators myself...

[tomwang]

why? I have tried.

[WileEZ]

Tomwang, Spodman is referring to the lack of information. Just saying "main gear bow" does not tell us anything.

 

Are you asking where to get a main gear bow, or are you asking how to build one or what?

 

A little more information on what you are trying to tell us would help.

 

Cheers,

WileEZ

[tomwang]

thank you!

I made a landing gear bow with vcauum infusion on a aluminum mold. consume 6300 g fibre glass and 2000 g epoxy resin.

It is 24mm thick , 80mm wide , 2500mm long , big bow! ha

a little soft I think, so it is neccesary to build a nother one someday.

[airnico]

hello Tomwang,

 

how did you build the mold?cnc machined? can you show me a picture of your mold and bow?

[tomwang]

it is hand-made

it is wider and larger than the gear bow I want

1cm thick and it is easy to make it into the shape I want it to be

shape it on big table with the help of some big nail which can fix the aluminum belt

[Kent Ashton]

Tom,

The bow is beautiful. Are you going to load-test it?

 

It might need to be thicker and stronger where the load is greatest. Our landing gear bows (made by Featherlite) are thinner down near the axle, they become thicker and heavier up near the mounting point, and they are somewhat thinner at the top of the bow between the mounting points (Cozy IV).

 

If your bow is one thickness and strong all over, it might be heavier than it needs to be.

 

Good effort. Are you an engineer? Did you get engineering help?

-Kent

[Kent Ashton]

This is a Cozy IV landing gear bow. Picture from Yair Gil's pages.

 

http://www.maddyhome.com/canardpages/pages/yairgil/ch9.htm

[airnico]

kent, what is the yellow stuff inside the bow?is it foam?

[Phil Kriley]

The Cozy main gear is made of "S" glass which is very hard and strong. The bow is usually bought from Featherlite and then modified per plans to create the completed landing gear with mounting tabs, enclosed brake lines and fairings.

[tomwang]

thanks a lot ,my friends!

the gear bow above is for a ultralight of a fan in my province. it is not very strong, as an experiment.

I have build another one for heavy load

the thickness from 40mm-24mm and 10cm wide

span is 170cm

will be shaped

yes , It will be tested in the coming days.

[Kent Ashton]

kent, what is the yellow stuff inside the bow?is it foam?

I'm not sure what you are looking at. It's just a false color in the photo. The Cozy bow is solid glass with glass cloth wrapped over it. There are better pictures on Yair's website, Chapter 9

http://www.maddyhome.com/canardpages/pages/yairgil/index.html

-Kent

[tomwang]

after 1 month work, the fuselage in its shape,

the room is in such a messy. need to be cleaned completed before the fuselage to be processed (primed and sanded etc)

[Big Steve]

Tomwang:

 

There is a gentleman on one of the other list who is making a fuselage very simiar to the one you are making. Great Idea take a Longeze and make the fuselage rounded maybe lighter. Just make sure you test everything really good before you test your life in it. STeve

[WileEZ]

Tomwang, that looks really nice!

 

I see you have one of the most important tools, a "moaning chair!"

 

Keep us posted on your progress.

[airnico]

Tomwang, your one-piece(the bottom part is one piece) rounded fuselage look very interesting, I really would like to know what is your layup schedule.

I suppose you made the 4 pieces from molds: may you talk me about how you arrived to this shape(wooden plug, foam modelled plug or what else) and how you are going to glass it?

[steve]

after 1 month work, the fuselage in its shape,

the room is in such a messy. need to be cleaned completed before the fuselage to be processed (primed and sanded etc)

is this your own set up ? or are you moding a long ?

looks very good so far:)

do you speak English and can i Skyp you?

[tomwang]

thanks all my friends

it is started from the bottom.then the two side walls and the rest

I put 4 ply fibre cloth on the corner(the round between side walls and bottom)

I will look for some big-belly who weights over 100kilos help me to test the strengh .it is very important and must be tested. I also like to get any info about the strengh of longez fuselage. would you help me?

I use sandbag (plastic bag filled with sand which is easy to use and obtain) to shape the foam with one side composite cured and another side composite is curing then I got the shape

yes. I can speak English (not a native speaker).I 'd like to share everything in the construction on this fuselage with you all. but I am not a professional diy so please help me to check is it everything ok

my skype: tomwang2k2

[Big Steve]

tomwang:

 

What are you using for bulkheads? How are you going to attatch your canard? The fuselage is the easy part it is hooking all the flying surfaces in the right place that makes it fly. STeve

[airnico]

I put 4 ply fibre cloth on the corner(the round between side walls and bottom)

I can't understand exactly: do you mean that you have built the fuselage's sides and bottom separately (layup per plans?) and then attached them with 4 ply(bid ?)?

[tomwang]

tomwang:

 

What are you using for bulkheads? How are you going to attatch your canard? The fuselage is the easy part it is hooking all the flying surfaces in the right place that makes it fly. STeve

what do you mean? the material? it is the same foam ,fabre and resin.

the canard havenot been constructed at all.

I wanna the canard be tens of centimeters above the main wing level, so it maybe different from longez's canard design.

[tomwang]

I can't understand exactly: do you mean that you have built the fuselage's sides and bottom separately (layup per plans?) and then attached them with 4 ply(bid ?)?

yes, I made them separately and then attach them together like what you think.