Minimoa 105"

bweaver · December 13, 2019, 11:11:58 PM

Guy, don't listen to Frank. If you rotate left, the pictures will be upside down. I say rotate right, or rotate left 3 times.

The project is really coming along, regardless.

Frank v B · December 13, 2019, 11:37:15 PM

Guy,

Like this:

Frank

Bruce's advice is good though ("don't listen to Frank"). He knows I'm a Technonerd. Heck, I still have a flip phone.

bweaver · December 14, 2019, 09:28:05 AM

Quote from: Frank v B on December 13, 2019, 11:37:15 PM
Guy,

Like this:

Frank

Bruce's advice is good though ("don't listen to Frank"). He knows I'm a Technonerd. Heck, I still have a flip phone.

Guy, no, no, no.

Frank is so knowledgeable I emulate his technical and communicative practices. I also have a flip phone. But mine is new.

Further, I still have my fishing pole transmitter and receiver with an exceptionally long piece of wire that would trail behind an aircraft. (In this context the word 'would' is used in the past tense. I have moved along a little more than Frank in this regard. I keep them only for nostalgic purposes only.)

And Guy, please feel free to ignore us, or for that matter you can ask/tell us to go away.

PS - As I said your project is really coming along. I look forward to following the progress.

GuyOReilly · December 14, 2019, 12:48:03 PM

The formers F4 and F5 need to be redone as the plywood was very poor quality, as you can see by the now correctly oriented pictures.
Two wrongs do not make a right, three rights make a left...
Thank you Bruce and Frank for your technological insights.

The other things I noted with this build include:
1- Do not use cheap wood, you will have bad results
2- The alignment of the landing gear needs to be adjusted
3- The wheel needs to sit lower
4- The fuselage crutch is corrctly aligned (I was shocked too

)
5- Make copies of the plan BEFORE you start cutting into it...
6- Gluing plans and patterns to the wood to assist with cuting helps, but is a pain to remove.

All the best,
Guy
ps: Payment for the annual membership on its way soon...

Frank v B · December 14, 2019, 09:05:10 PM

Guy,

re:The other things I noted with this build include:
1- Do not use cheap wood, you will have bad results
2- The alignment of the landing gear needs to be adjusted
3- The wheel needs to sit lower
4- The fuselage crutch is corrctly aligned (I was shocked too )
5- Make copies of the plan BEFORE you start cutting into it...
6- Gluing plans and patterns to the wood to assist with cuting helps, but is a pain to remove.

An expert has made every mistake once and learned.
An idiot makes each mistake more than once.
See the difference?

Keep building! Looking good.

Frank

GuyOReilly · January 29, 2020, 07:57:56 PM

More progress:
1- re-cut the formers F4 and F5.
2- cut all formers in 1/8 balsa
3- glued all formers except F1

GuyOReilly · February 07, 2020, 03:36:50 PM

Oh My, Gosh Darn It!! What have I done now???!!??
I glued F-10 upside down.

Will need to cut another one...
C'est la vie!

davidk · February 07, 2020, 04:05:15 PM

Wait... but won't that help with inverted flight???

GuyOReilly · February 16, 2020, 08:33:35 PM

Plywood 1/16 ribs done. Many more to follow...

GuyOReilly · February 27, 2020, 10:02:39 PM

Progress on Minimoa, rib construction.
The first photo shows the center punk used to, you guessed it, center the location of the hole for the wing joining tube.
#2 shows the brass tube, sliding over the center punch.
#3 shows the result after the the brass tube is lowered.
#4 shows the results after the spar has been cut.

GuyOReilly · February 27, 2020, 10:06:42 PM

The spars (top and bottom) should be 1/8 by 3/8. I have 1/4 by 3/8.
Question: Should I cut the spaces in the ribs deeper and use the 1/4 or should I sand/plane the wood down to 1/8?

Thank you for your suggestions.
Guy

GuyOReilly · February 27, 2020, 10:39:23 PM

One more question concerning the ribs.
The holes for the connecting rods are very close to the edges.
There is little room for reinforcement to increase the rigidity.
As his area will be subject to high stress (duh) how can it be strengthened?

Thank you for your suggestions.
Guy

bweaver · February 27, 2020, 11:02:41 PM

Quote from: GuyOReilly on February 27, 2020, 10:39:23 PM
One more question concerning the ribs.
The holes for the connecting rods are very close to the edges.
There is little room for reinforcement to increase the rigidity.
As his area will be subject to high stress (duh) how can it be strengthened?

Thank you for your suggestions.
Guy

Take larger pictures and it will increase the space between the rods and edges. (At least in theory.)

Frank v B · February 27, 2020, 11:05:37 PM

Guy,

A stab at your questions:

1) spar- my personal comment about glider design is that the old balsa and ply ones are tender. I would split the difference. Going from 1/8 to 1/4 " is radical. 3/16 would be a nice compromise. If you want to be really cute, taper it to 1/8" per plan at the tips.
2) ribs with punched holes. If it has any kind of sheeting over it ("D" tube wing) or even cap strips I would not worry about it.
3) If your concern is over the strength of wing joiner tubes I would recommend fibreglassing the center section (1.4 oz cloth) with either epoxy of water-based urethane over the center sheeting.

Frank

Frank v B · February 27, 2020, 11:07:36 PM

Guy,

re: Bruce's "Take larger pictures and it will increase the space between the rods and edges."

A cut-and-paste from my Build class post

Guy,

Sorry you missed it.
Ask the question about the Minimoa and between the answers supplied by Bruce, Simon, Michael and myself we will have you totally messed up by the time this post is done. ;

Bruce is back in spades.

We are well on our way.

Frank