Akromaster-20 Shared development build proposal

What a brilliant idea!

@bmfaadministrator Wish me luck, I will need a bit of help ..

I think on Tuesday nights session we could give the idea a bit of a plug, see if we can generate some extra interest

@jono This is a great idea, anything that I can do to help is fine.

I can say now that you have complete access to my laser cutter for this project, the bed size is 650mm x 420mm so sometimes you might need to be creative on things like fuselage sides.

How are you with the CAD side to start with?

Here is the cutter that I have.

@pylonuk Ah wow that looks good bit of kit, thanks that should help move things along.  Should be ok with the CAD / Fusion 360 I am hoping it should be fairly simple. I think there is a way to share 360 project files, unless that is locked off for private use licence holders. I will have a look.

@jono Tuesday evenings ITAT is on using Fusion 360 to get through to cutting wing ribs on a laser, that would be a great opportunity to ask about the file sharing.

Andy Symons and Mark Benns will mention this project build on Tuesday evening to get support, I might not dial in on Tuesday evening but about 90% likely to.

You have good 3D printing capability, so that is OK.

I also have milling and turning capability at my workshop if you need to make any special parts for the project.

Regards

Barrie

@pylonuk Very nice, racking my brain to think of something to make on it now

This may take a while but I hope to keep this progressing. 

So far I have downloaded the pdf of the plan from Outerzone and then converted the pdf into two separate pages in jpg format. 

From here I have loaded the two files into Fusion 360 as two canvases. These have to be calibrated to get them the correct size. To do this I opened the main plan in Acrobat reader and printed a section of the plan I used the canopy as it just about fills an A4 print. I measured the length of the canopy and used this value in the canvas calibration in Fusion 360. Then I measured the width of F9 and used this value to calibrate the parts canvas. 

I have attached a screen shot of the resultant state of the drawing.  

Now we can do some drawing. 

Jono

Because this kit is Japanese there will be a big dimension something like the rib spacing that will be a logical dimension, I would use that as a scaling/calibration figure. I really doubt that they would have such a spacing at say 153.85 for example.

If F9 from an original kit? that would also be a good calibration point.

Regards

Barrie

a bit of progress, tracing the fuselage 

 tonight's update

Tonight's developments 

I have traced the top view from the plan and then rotated it by 90 degrees along its axis 

then projected down to create the formers 

hoping this works out ok 

Next I guess is looking into drawing up to suit an electric motor and maybe a top hatch for getting a battery in and out 

wish me luck 

Hello Jono

Your project received really good comments this evening during the ITAT.

Are those 1/8" ply formers?

B.

@pylonuk Hi, I did tune in fir ITAT and thought it was a very good session. Great to see feedback on the Akro is positive. As per the kit the formers are 1/8 ply (they could be printed too I guess) I was thinking about using 2mm liteply for the Fuselage sides. I think I will look at getting lightburn