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Cox Engine of The Month
December-2017
1/2A Nut's

"Chrome Moly TD .020 RC"



PAST WINNERS
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World of Aviation

NANO -TD .010 / 130 MPH / Video Speed Plane

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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Sun Dec 03, 2017 4:37 am

The NANO I is almost ready for another round of testing with the TD .020 RC need to fire
up the engine and check the throws on the throttle next. All up weight of this 3ch effort
is 3.6oz. with a thrust to weight ratio of 1.27:1 nearly 30% more and 92 mph static.
Will use a new 4k vid camera with reasonable ability to capture clarity during high speed passes.





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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  balogh on Sun Dec 03, 2017 5:59 am

Brad like always this is awsome...looking forward to yor vid.
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  MauricioB on Sun Dec 03, 2017 7:13 am

Friend, I'm attentive to your video .....
Here is someone who wants to collaborate controlling the speed! Eyebrows Flying
Very Happy
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Sun Dec 03, 2017 8:51 pm

Thank you Gents!

Set up the throttle sleeve and top end the original tank has
small 1.5mm ID fuel line for the TD .010 it has robbed some top
end out of the .020 engine the NV had to be opened up 4 3/4 turns
to feed the thirsty beast. The restriction on the breather line
is the same 1.5 ID. A must for fuel draw with the TD .010's small
carb, standard 1/2A line causes weak draw less rpm unsteady screaming.
So will just have to take the hit I glued in the tank as part of the former
structure up front.

3.75x4
Static 21,560 rpm / 4.23oz thrust 82 mph best steady.
Best idle was 7,105 rpm without messing with the trim.

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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Mon Dec 04, 2017 3:08 am

Inside view cg is a bit forward about 1/8th inch which is quite a bit for a small plane.
The plane has over 80 flights to date. 4 to 6 flights per trip to the field depending on
wind conditions and temp. A quarter for size reference.




RC Plane
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  MauricioB on Mon Dec 04, 2017 5:20 am

Yes friend, you see a super compact work there inside the fuselage ... I'm attentive to the video, it will surely look great in flight! Beer Cheers
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Mon Dec 04, 2017 8:30 pm

Yes super compact!
Here is a comparison to the NANO II / 2ch just 2.2oz / 62.3g
Has a ply fuselage too.







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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Tue Dec 05, 2017 8:09 pm

Made a micro size thrust washer this evening for one of my TD .020's
This one had a horrible wear gap of .5mm just too much play for me to
stomach. Will help reduce oil drip out the front and more so less play
for the crank pin / con rod with no rub wear to the back plate. Note
thrust washer must fit over the crank shaft dia. not the spline.


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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Thu Dec 07, 2017 9:38 am

I like the proportions of the NANO II design enough to resize it for TD.049 thru .074 engines.



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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  MauricioB on Thu Dec 07, 2017 9:47 am

1/2A Nut wrote:I like the proportions of the NANO II design enough to resize it for TD.049 thru .074 engines.




Brad, the wings in all cases are solid raft ?, giving the profile to sandpaper?
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  balogh on Thu Dec 07, 2017 11:51 am

[quote="1/2A Nut"]Made a micro size thrust washer this evening for one of my TD .020's
This one had a horrible wear gap of .5mm just too much play for me to
stomach. Will help reduce oil drip out the front and more so less play
for the crank pin / con rod with no rub wear to the back plate. Note
thrust washer must fit over the crank shaft dia. not the spline.
quote]

Brad what is the material you used for the thrust washer? I have a similar issue with a fairly used but still as-new 020 and put a metric, normal washer between the prop drive plate and the collet..but do not like it and would like to swap with something more profesional.
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Thu Dec 07, 2017 2:39 pm

Yes solid balsa air-foiled wings sold by SIG

http://www.gravesrc.com/sig-balsa-1-4-x-4-x-36-airfoil-sheet.html



I used .3mm thick tin from a tin can lid.

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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Sat Dec 09, 2017 4:04 am






Small Cox Logo
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Sun Dec 10, 2017 10:22 pm

http://uterc.org/node/1578

2016-02-13 USA UteRC Indoor Tether Racing
Tue, 2016-02-16 15:22 — Ed Stimpson
The Utah State Aeromodelers invited the UteRC club to witness the raw speed of an indoor Tether Race on Feb. 13th. The planes have 1/8" inch thick x 12" wingspans with no controls and are powered by Cox TD .020 engines flying on the end of a 10-ft. steel tether line from a 2-ft. high pylon in the center of a 20-ft. circle. Top speed of the day was over 70 MPH in the 1/8 of a mile distance of 10 laps.










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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  getback on Mon Dec 11, 2017 8:26 am

Man those are some really small planes on short lines hauling ass Thumbs Up I see there are NO videos of this event ? Small Cox Logo
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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

Post  1/2A Nut on Mon Dec 11, 2017 9:27 am

Just horrible to post and no vid a must these days, someone should have filmed with a smart phone
at a minimum lol. I hoped by posting this perhaps a member on here would pipe in with more info and vid link.
Photos are better than nothing of course, but we have become spoiled with vid lol Popcorn

The one on the upper right looks like it might be a TD .010 based on the prop and size of the plane..

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Re: NANO -TD .010 / 130 MPH / Video Speed Plane

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