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Cox Engine of The Month
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Kim's

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Out in the Shop...Snow Day

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Out in the Shop...Snow Day

Post  Kim on Mon Feb 16, 2015 4:28 pm

While I certainly don't have anything on my eastern/northeastern buds, my neck of the woods got a substantial amount of snowfall, along with some sustained winds.  Still supposed to get more, but at least we dodged the ice that was talked about.

Made myself a path out to the shop and fired up the heat for some flashback work on a couple Blackhawk/Scientific control-liners, continued restoration on 'Mud Dabber'--my 33 year-old Sig MKI Kadet, a little touch-up on 'Big Otto's new snout, and some prep work on the Lazy Bee's damaged rudder.

So, A full afternoon in spite of the white stuff.



Mud Dabber's repaired nose is mummy-wrapped with silkspan that will get some color here shortly.



A Scientific 'Stunt Trainer' and 'Golden Hawk' get their initial clear dope coats.  







The 'Sorta Shark' i'm building for Patrick and his Fox .15.



Big Otto is finally getting some color on it's rebuilt nose.



Trying to gently dewarp a slight twist in Winder's wing.



Last edited by Kim on Tue Feb 17, 2015 6:01 am; edited 1 time in total
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re: wing twist-warp

Post  happydad on Mon Feb 16, 2015 8:27 pm

Kim wrote:While I certainly don't have anything on my eastern/northeastern buds, my neck of the woods got a substantial amount of snowfall, along with some sustained winds.  Still supposed to get more, but at least we dodged the ice that was talked about.

Made myself a path out to the shop and fired up the heat for some flashback work on a couple Blackhawk/Scientific control-liners, continued restoration on 'Mud Dabber'--my 33 year-old Sig MKI Kadet, a little touch-up on 'Big Otto's new snout, and some prep work on the Lazy Bee's damages rudder.

So, A full afternoon in spite of the white stuff.


Trying to gently dewarp a slight twist in Winder's wing.


Kim: what do you find works the best to de-twist the wing? Heat, opposite twist, time or a combination of all 3??

hd

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Re: Out in the Shop...Snow Day

Post  Kim on Tue Feb 17, 2015 6:15 am

happydad wrote:
Kim wrote:

Trying to gently dewarp a slight twist in Winder's wing.


Kim: what do you find works the best to de-twist the wing? Heat, opposite twist, time or a combination of all 3??

hd

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Hey HD,

I'm trying all three...not sure of the outcome yet.  Winder is built like a tank, so I'm trying to be gentle for fear of the thing just cracking in two.  There's a radiator-style space heater under the desk that heats up the whole thing.  I've got a bunch of sheet-steel plates I got from the diaper factory trash years ago (STILL a shameless dumpster-diver!), and am using them and some old power-panel batteries to gradually add more counter-twist to that outboard panel.

I leave the whole thing cooking while I work in the shop, but shut down the heat when I leave.

LOOKS like it helped, but won't know for sure 'till I launch the thing again.
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Re: Out in the Shop...Snow Day

Post  Ken Cook on Wed Feb 18, 2015 6:07 pm

Kim, I love the enjoyment of doing the same thing. I take a few planes and work a little on each one followed by a nice cup of coffee. I take a break , stare around a bit, do a little tidying up and do a little more progress. I take my good old time. I framed up a Big Otto a week ago. I cut out all the parts and did a little substituting here and there. I put Big Otto on a bit of a diet. I strengthened the forward nacelle with 1/64" ply on both sides and I completely sheeted the two center ribs top and bottom under the nacelle area. The already cut up wing tips were further cut up with lightening holes. I was able to to remove 6 grams of weight just in lightening holes and rib center area removal.I plan on using a Tee Dee for power. I'm utilizing the tank compartment which is requiring a total rework of a 1 oz. tank I have planned for it. I cut the leading edge on my router table but I feel I should've routed out the back of it to lighten it further. It was a pretty stout piece.



I'm patiently waiting for some warmer weather to punch some holes in the sky. Ken
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Re: Out in the Shop...Snow Day

Post  Kim on Wed Feb 18, 2015 6:48 pm

EXCELLENT work! (makes me glad my Big Otto's innards are nicely hidden under it's monokote !)  I guess the Golden Hawk has become the flagship of the Scientific Line (seems like it's the one that shows up the most), but Big Otto is all-time my favorite.

I planted mine after having the thing just out-fly my reflexes with one of Bernie's X-Treme .049's in its nose.  It shall now receive a well-run and probably-anemic-by-other's-standards Black Widow, which has been a friendly runner across several planes.

I'd like to start another one, and put a little more finesse in it's frame, but think the new rebuild will be more than satisfying for my level.  I'm also rebuilding a 10%+ Big Otto that I flew with a Tee Dee 51 for years...THAT thing is fast enough to scare me, so I admire your bravery in hanging a similar powerplant on the original-size version!  



Yeah, I bounce from project to project according to whatever whim hits me, but I AM inching several of them forward, so there should be a jump in the airworthy population this Spring!

Be glad to see photos/video of yours once it's finished!
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Re: Out in the Shop...Snow Day

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