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SR 120 based, semi-scale uh 60


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Tom Lauten
Extreme 3D
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Joined: 11 Sep 2010
Posts: 379
Location: Inverness, Scotland. 47 and counting...

PostPosted: Sun Dec 29, 2013 6:13 am
PostPost subject: SR 120 based, semi-scale uh 60
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Right, I'm taking a minor plunge and committing a spare SR 120 to a UH 60 build using a Twister CX2 fuselage.

I know, not very scale but hey...gotta start somewhere huh?

Using an Xtreme 180 motor and twin batteries. Gonna fill in those nasty spoked wheels and get some basic nav lights on it. I want to improve the tail rotor authority a bit...any ideas for a good tail prop up grade for a stock SR 120 motor?
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admiral
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Joined: 20 Mar 2009
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Location: Brisbane, Australia

PostPosted: Tue Dec 31, 2013 3:34 am
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Hi Tom,

Just a suggestion have not tried it myself, modify a four blade Ultra Mini spitfire propeller or some other small aircraft with a four blade prop, it would also look more scale.

UM Spitfire prop PN E-Flite 100 x 100mm 4 Blade Propeller EFLUP1001004B

You would have to cut it down a bit.

Good luck with the project, post some build photos.
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Tue Dec 31, 2013 3:49 am
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Hmmmm....interesting idea. 100mm seems a bit too big but it's worth some research...thanks mate!
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Wed Jan 01, 2014 6:09 am
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Well, after further research I have found this place...

http://www.heli-scale-quality.com

OMG! Shocked

QUALITY scale micro heli kits!

..they do a Twister mod kit! But.... It'll be too heavy for the 120SR. I NEED a bigger heli for a donor.... Crying or Very sad

However they also do this...

http://www.heli-scale-quality.com/component/option,com_virtuemart/page,shop.browse/category_id,129/Itemid,43/

The game is afoot!
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Sat Jan 04, 2014 6:17 pm
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Ok, research is building up. I am going to make a Twister based UH-60. I will take moulds of detailed parts from a 1/35 scale plastic model kit and cast them in ultra light weight resin (so light the float on water!) and detail up the Twister fuselage. I have high hopes.

Having said that the SEAHAWK should also look amazing!
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Fri Jan 10, 2014 1:42 am
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Well. I have 3 vac form fuselages and a full kit on their way to me from Germany!

I'm using detail pieces harvested from matching plastic scale model kits.

First on the block is the Twister based UH-60 with details from a 1/35 scale Academy kit...gonna be a LOT of work but fun!

I'm going to mould and cast some parts in a super light weight resin I have come up with. These will be either big details, structural part and parts that are likely to break like landing gear. I'll cast metal or CF supports in those...possibly aluminum tubing. This resin is so light it floats in water!

I'll post pics as I go.
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pjdog
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Joined: 12 Jan 2010
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Location: Hudson, Florida, USA

PostPosted: Fri Jan 10, 2014 7:21 pm
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We need pictures Tom. When you get going with your project please post some pictures.

jack
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Fri Jan 10, 2014 7:38 pm
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Will do.

I'm already doing a test with a ultra light weight laminating technique. With luck I will be able to turn out fuselages the weight of vac forms with the details of a plastic model kit!!

That's the theory anyway! Rolling Eyes
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pjdog
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PostPosted: Sat Jan 11, 2014 8:24 pm
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Tom:

you have bigger balls than I do. I'd not know even how to start something like that. I remember trying to get a scale body on my little first MSR helicopter. Of course I was looking on the net to find something. What I bought added so much weight that I had to fly at full motor all the time. It was a bust. I got rid of it almost right away. It flew like a brick.

Guys like you and Tom are what drives the rest of us.

Looking forward to seeing your progress.

jack
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Tom Lauten
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Sun Jan 12, 2014 3:26 am
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Quote:
Guys like you and Tom are what drives the rest of us.


Oh dear! Sorry about that in advance! Lol

Well the experiment worked. What I got was surprisingly tough...a bit heavy for my liking, but very detailed and glassy smooth, a perfect copy of the kit part. With more practice I think I could turn out the basic fuselage of an AS 350 in 1/48th scale that weighs in at around 15 grams minus tiny details. I'm hoping my MSR X can cope with that minus it's CF tail boom.
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Tue Jan 14, 2014 2:26 am
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I just had some success today.

I managed to put together a set of navigation lights for my scale Helis. It has 2x "flash-flash-pause" style white strobe lights and a red and a green nav light. It runs off a single 3v button cell and the whole thing including battery, LEDs, wiring, switch and strobe controller chip weighs under 15 grams!

I am chuffed! I will write up details as soon as I finalize the whole set up.
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pjdog
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PostPosted: Tue Jan 14, 2014 8:10 pm
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Pictures my man, Pictures?

I can't spell, don't read very well but I'm super good at looking at a picture!!

Jack
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Tue Jan 14, 2014 9:46 pm
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Soon come man, soon come...life is getting in the way!

Stupid work and home life! Confused
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Tom Lauten
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Joined: 11 Sep 2010
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Location: Inverness, Scotland. 47 and counting...

PostPosted: Mon Jan 20, 2014 8:42 am
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Here's the video of the strobe in operation. In the end there will be a second strobe and two nav lights..red and green.

http://www.youtube.com/watch?v=yMeTV8OJ0qo
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pjdog
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Joined: 12 Jan 2010
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Location: Hudson, Florida, USA

PostPosted: Tue Jan 21, 2014 9:00 am
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Tom:

Have you seen the light controller and LEDs that E-Flite (Blade) sells. They are very cheap and work very well. Both myself and Tombo242 have them on our quads.

I'll get a link for you.

Jack
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