BUSA Dr-1 1/4 Scale

[Gregor77]

Here is some of the images.. she is big 70 1/2 WS.

[piker]

They say the plans can distort (shrink/expand), so perhaps one side stretched more than the other.  For this reason, they keep saying to use the parts at the primary reference (specifically when spacing out the spars and TE/LE).  However, when cutting things to length, the part fit won't help.  Good thing you checked, but I wonder how much 1/8" would really effect a plane this size.  Lateral weight balance will matter more when done.

I made a bit more progress last night.  I have all the ribs and spars / TE in place for one set of wings.  But tonight (when I get home at 11:00) I'll work on my Widgeon so I can try that at the lake tomorrow evening.

I can see this thread becoming very long as we're both rather chatty 

Robert

[piker]

Cool.  Looks great.  BTW, I don't have any LE sheeting on my wings, other than center section.  Are those 1/4" ribs I see there? 

Robert

[Gregor77]

They are laminated.  So approx 1/4 now.  There is a box that needs to be made in plywood with two dowls to hold the wing to the bottom of the fuse.

Oh, I called BUSA and Debbie is sending me new plans.. wow what great customer service!!!  A+ 

Here is the plane that I am going to model it after... 

I measured the plans and the spacing around each wing former, they are 3" and the last one is 3 and 1/8th.  So the plan was off on one side.  The rest is fine, but the tail is also effected being off 1/8th.  But the new version is hopefully OK.

[piker]

Nice.  I'm kind of glad you're not making it red

[Gregor77]

Me too!  There is too many red ones and lots of other very cool colours

No one seems to want to be the underdog!

[Gregor77]

Well. I am 80% into the wing.  It's looking good.  Spent another two hrs on it.  I have to glue the l.e and then sheet the top portion of the wing.  I should be done the wing this weekend.  Hopefully get started on the center wing by monday.

[piker]

Did you pull an all nighter?!  Great work.  You'll be done the framing by the beginning of September   

Robert

[Madman]

Just talked with the guy in our club with the 1/4 Dr.I. It is a Balsa USA. He has had it for many years so it won't be with the latest updates. It weighed 15 lbs when new and runs a 20x6 prop a 5000 rpm. His is coverall and dope.

Stephen

[Gregor77]

Lower wing done.  Pulled an all nighter. Looks amazing.  All sanded.  The leading edge was a bit of a challenge.  But looks good. 

[battlestu]

what no pictures 

[sihinch]

I think he's building it, in his head! 

[Gregor77]

Well, from my head to the table!   

I got some great sanding blocks in different sizes from PIN.  I am using mix of Flexible CA and think (pink) CA from PIN.  It works well.   

I have lots of sanding to do tonight and I can get started laying out the Mid wing.  I am hoping to have it done by the end of the week.

Wednesday I am heading to Seaton Valley, a member there has a DR-1 and he said that I can take a look at it for reference purposes.  I am excited.  I really would like to see how big this thing is.

[bfeist]

Those are beefy looking wing ribs! I love the way wood looks before it's covered.

[flyboy]

Hey Greg,

Once you're done with that one I think I've found you your next build. Let me know if you think this thing would fly with an electric motor instead 

https://www.youtube.com/watch?v=MjrPgS-t55s&feature=related