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Hot Topic (More than 10 Replies) Re: 1001 Series Thunderbolt (Read 9365 times)
Sky9pilot
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Re: 1001 Series Thunderbolt
Reply #21 - May 29th, 2012 at 11:01am
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Eric, 

Thanks....that's the name "Blind Nuts".... my recall is not what it used to be....but I'm not as bad as it could be thank God! Lips Sealed Cheesy Wink Smiley

Look forward to seeing this Thunderbolt in the air....very excited so take some video please Wink Cool

No building stuff here so I'll be an observer for a few weeks.  Took three days to get here stopping at relatives to spend the night.  Sure glad I wasn't driving a prairie schooner and oxen Cheesy Wink Lips Sealed

Tom

  

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thymekiller
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Re: 1001 Series Thunderbolt
Reply #20 - May 28th, 2012 at 8:19pm
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Quote:
hidden thread sockets


Tom, I think you are referring to "blind nuts".  Basically a tube with threads on the inside and washer like back made on. The back has small teeth. 
They still use those.  From what I have seen, the plane is toast if it noses in hard regardless.  They do make transport easier.  What I have done is build a shelf and use drywall course screws.  At these speeds, I am not sure what to expect. 

Dave, this week I will experiment with what I have. 

Will post pics soon, I promise.  Roll Eyes Working third shift has got me a bit off kilter. Getting a grip on it. Also need an A/C in the shop.  Cry Cry
  

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Dave L
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Re: 1001 Series Thunderbolt
Reply #19 - May 28th, 2012 at 8:49am
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Tom,

Yes, I have a photo of the P51 nose where the epoxy overheated the plastic cowling.  I used too much epoxy and not enough foam filling.  I was using epoxy with a working time of about 30 minutes. 

Eric,

The wing adjustment sounds like great idea as a way to get the  incidence just right.

If you like the crumple zone approach, spray-in foam insulation is great because it's so easy compared to carving and fitting the foam in.  It has a little give to it.  I did end up gluing the back of the foam-filled cowling to the vinyl firewall in the kit, then that to the front of the body.  I wanted the foam to have a larger attachment area.  It appears to have worked.

Dave
  
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Re: 1001 Series Thunderbolt
Reply #18 - May 27th, 2012 at 7:25pm
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Dave,

I've noticed that some epoxy gives off heat when cureing...have you noticed any deformation of the plastic nose and spinner with the epoxy process???

Tom
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Re: 1001 Series Thunderbolt
Reply #17 - May 27th, 2012 at 7:17pm
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Eric,

Old RC practice was hidden thread sockets (can't remember the exact name...too many moons ago) and nylon bolts designed to shear off rather than break the wing....If the bolts are too thick...often a thin hole was drilled down center of bolt to assist in shear ability.

Tom
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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thymekiller
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Re: 1001 Series Thunderbolt
Reply #16 - May 26th, 2012 at 12:32pm
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Quote:
Will Elmer's dry in the nose area with the styrofoam?


Eventually, yes. I may make a ball of it to try. I could throw it against the wall.   

I have to wonder if a balance should be found between impact resistance, and indestructible nose. As a "crumple zone" it could save the plane.  After all, the nose could be made of solid wood. That, of course, would transmit ALL the impact to the rest of the plane.  With a vacuum former, noses could be replaced pretty cheap. Couple pennies per unit, at least for the plastic part. 

Which epoxy do you use?

Figured out how to mount the main wing.  Will be four screws. That way I can adjust with shims. Will post pics soon. The wing may shear off, but the mount will stay. Cheesy
  

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Dave L
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Re: 1001 Series Thunderbolt
Reply #15 - May 25th, 2012 at 9:35pm
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Will Elmer's dry in the nose area with the styrofoam?  I'm interested to see how it comes out. 

I'm kind of leaning toward going back to epoxy and micro-balloons after trying spray-in insulation foam on the P40 because the spray-in stuff was a bit soft.  Last weekend the P40 got pummeled on 3 or 4 bad launches & the side of the cowl split.  A week earlier the spinner came off. No damage has happened to the 3 planes with the epoxy method.
  
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thymekiller
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Re: 1001 Series Thunderbolt
Reply #14 - May 25th, 2012 at 5:36pm
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The Bombshell is a good plane.  The Sailplane is on my list.

Thinking about how to make the main wing adjustable.
Thinking about adjustment screws.  Huh Huh  Will decide when I stop by the hardware store in the morning.

Also thinking about Elmer's glue, watered 50% and Styrofoam balls and bits. Shouldn't be too tough to carve an insert for the nose.  Fill in the minor gaps with a "slurry".  Probly use blue foam since I already have that.  ? Huh
  

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Dave L
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Re: 1001 Series Thunderbolt
Reply #13 - May 22nd, 2012 at 8:49pm
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That Valkyrie is amazing!  What a beautiful job.  It's too bad you can't see all those ribs after it's covered.  I had a set of plans for the Sailplane but never got to it.  I did build a couple of RC Buzzard Bombshells though.  I remember chasing a friend around the field.  He was running and the plane slowly flew behind him!  Crashed one plane with a running movie camera on top.  Much spinning at the end.
  
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thymekiller
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Re: 1001 Series Thunderbolt
Reply #12 - May 22nd, 2012 at 7:58am
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http://www.stickandtissue.com/cgi-bin/yabb2/YaBB.pl?num=1305546478/0#0

It's in "Other Folks Planes."  Takes a minute to load. Pics change by themselves, so just sit back and enjoy the ride.
  

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Re: 1001 Series Thunderbolt
Reply #11 - May 21st, 2012 at 6:55pm
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thymekiller wrote on May 21st, 2012 at 6:18pm:
Quote:
Do you have a ply rib for line attachment, or a different approach?


Still thinking on that.

Quote:
I haven't checked out the Valkrie, but I will.


Brace yourself when you do. It's jaw dropping.  If you hold your mouse just right, the pics change.



Where does one find the Valkrie build???? you got a link????

Tom
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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thymekiller
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Re: 1001 Series Thunderbolt
Reply #10 - May 21st, 2012 at 6:18pm
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Quote:
Do you have a ply rib for line attachment, or a different approach?


Still thinking on that.

Quote:
I haven't checked out the Valkrie, but I will.


Brace yourself when you do. It's jaw dropping.  If you hold your mouse just right, the pics change.
  

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Dave L
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Re: 1001 Series Thunderbolt
Reply #9 - May 21st, 2012 at 3:32pm
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It looks like you've made a lot of progress!  The spars look about right.  The bottom spruce spar is back a ways, but you also have the dihedral brace, so that may work out fine.

Do you have a ply rib for line attachment, or a different approach?

I haven't tried an airfoil on the rudder, but it would make it stronger and look good, so why not?  I don't think it affects turning much.  Incidence, line position and handle width do appear to affect turning. 

I haven't checked out the Valkrie, but I will.  There are a lot of great looking planes on this forum.  I'm in awe of the tissue covering skills. 
  
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thymekiller
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Re: 1001 Series Thunderbolt
Reply #8 - May 21st, 2012 at 10:47am
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Shows where I put the spruce spars. Also shows the slot for the dihedral brace.  I still need to enlarge that slot.

The rest of the build is in "Current Builds".
  

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Re: 1001 Series Thunderbolt
Reply #7 - May 20th, 2012 at 11:42pm
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Ok.  I will try to think of a way to make interchangeable stabs.  That way I can try different set ups.  Will start with over sized flat and see how that works.   I know a spit is a bit harder to fly anyway, and the T-Bolt kinda has an elliptical wing also. 
Assuming it survives that first flight. Grin Cool

What are your thoughts on a foil' on both sides of the rudder?  Would that slow down turning?  Maybe tame it a bit?

btw, as an aside, have you seen the Valkyrie?  AWSOME build!!!!

Before doing the wing attachment points, I think I will visit my local bait shop and see what they have.
  

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