Jump to content

Gyroo!...an autogyro for under £25?


Richard Harris
 Share

Recommended Posts

On 18/11/2021 at 18:57, Richard Harris said:

Nice job Chris, loops will be a doddle now! no pressure for a video.........

I'd be interested to know where the CG has ended up on your and Steve's over powered Gyroo's?

When you guys get chance could you take a measurement from the front of the mast at the fuselage top forwards?

 

 

Hi Richard,

As stated in a previous post I had to fit the heavier motor as my model was Tail Heavy. ( I dont like dead weight )

So my overpowered Gyroo does balance on your recommended CoG point with approx. 15 degrees nose down angle. And flies just fine. ?

Just out of curiosity why is the CoG point not moved further forward to a point where the model is level to make it easier for other to determine if the model is balanced correctly ?

 

Steve

Link to comment
Share on other sites

14 hours ago, Chris Dowell said:

Steve    Like I said "L" is for Landing ...that was an "arrival"?  I was more thinking of having rotors front and back ..similar to a trycipter +wings Ponder ye on that one sport.

 Chris...

 

Sorry, I don't do quadcopter or tricopter. Just not my thing. But a swing wing ?.

 

Besides I always thought vtol ment Vertical take off or landing. And Gyrocopters known as stol. 

 

Steve.

Link to comment
Share on other sites

A bit off topic but this question is aimed at Rich. Finally got round to attaching my blades for my Panther and i  have made a stupid mistake of making the blades so they turn clockwise. Save making a new set can i cut the blades down from 21/1/2 x 2/3/8 inch to 19/3/4 x 2/3/8 , Would this make a difference  regarding  lift.  Thank you.

 

 

 

 

Link to comment
Share on other sites

2 hours ago, bees said:

A bit off topic but this question is aimed at Rich. Finally got round to attaching my blades for my Panther and i  have made a stupid mistake of making the blades so they turn clockwise. Save making a new set can i cut the blades down from 21/1/2 x 2/3/8 inch to 19/3/4 x 2/3/8 , Would this make a difference  regarding  lift.  Thank you.

 

 

 

 

 

Or maybe reverse the motor and side thrust fit a pusher prop and enjoy flying right hand circuits. 

 

Steve ?

Link to comment
Share on other sites

On 25/11/2021 at 16:29, bees said:

A bit off topic but this question is aimed at Rich. Finally got round to attaching my blades for my Panther and i  have made a stupid mistake of making the blades so they turn clockwise. Save making a new set can i cut the blades down from 21/1/2 x 2/3/8 inch to 19/3/4 x 2/3/8 , Would this make a difference  regarding  lift.  Thank you.

 

 

 

 

Bees,

Keep the blades as they are, you will have to add right roll trim for a  clockwise rotation, alter nothing else.

I wouldn't advise shortening the blades.

 

Rich

Link to comment
Share on other sites

I went to the flying field yesterday hoping to test a new model(Tadpole) but unfortunately the wind was a little high for a test flight. I also wanted to test some new blades on the gyroooooo ? and I new this model would handle the conditions OK. I also found that I will have to reduce the the motor thrust  a little as it was 'ballooning ' under full power.

Steve ..did you find that ?

I thought that I would also share some pics of my recent blade construction. Now it is not my intention to reinvent the wheel. but simply to see if I could make good blades with material that was lying around. (tight fisted old sod)

So I used timber slats from a venetian blind and "dollar tree "5mm foam. The timber slats were cut to the required length sanded and joined with PVA with a couple more layers for the L/E and hub. These slats are approx 2mm thick and adding the foam to the top worked out pretty good. I pretty much balanced the blades at this stage before adding the foam as that would be adding only a little more weight.

I shaped the L/E before adding the foam which was again joined with PVA and pressed flat over night .The foam is a lot easier to shape than balsa with less dust.

I did not add tip weight as I considered they would be heavy enough as is. These blades are 500 X 60 including the try plate with bolt weigh 209 gms.  I would be interest in comparing the weight of these blades with any one that has made similar size in balsa.

The scales in the picture show the weight of a larger set of blades.

You will be happy to know that I even as far as crash testing these blades....just to test them ? with no damage.

All the strength is in the timber with the foam just to give shape and support the covering that is applied at a low heat.

Happy landings

 Chris...

DSC02393.JPG

DSC02394.JPG

DSC02397.JPG

DSC02398.JPG

DSC02399.JPG

DSC02400.JPG

DSC02402.JPG

DSC02403.JPG

DSC02404.JPG

DSC02405.JPG

DSC02408.JPG

DSC02409.JPG

DSC02410.JPG

DSC02412.JPG

  • Like 1
Link to comment
Share on other sites

19 hours ago, Chris Dowell said:

I did not add tip weight as I considered they would be heavy enough as is. These blades are 500 X 60 including the try plate with bolt weigh 209 gms.  I would be interest in comparing the weight of these blades with any one that has made similar size in balsa.

My Blades as a set including the Delta plates all bolted as one ready for bolting onto the C30 head. = 134g

They are 450mm long x 55mm wide x 6mm thick

 

Steve

 

 

Link to comment
Share on other sites

I like the blades Chris, have you tried them yet?

 

Will let you all know when the plans are earmarked for publication, have had a bit of a delay due to Covid in the family and seasonal viruses.

 

I did manage to get out last weekend with something I always fancied experimenting with, things didnt go to plan but the results were encouraging. The Gyroo is the perfect machine for trying these things out on.

 

 

 

Rich

Single Blade.jpg

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...