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Old Jul 16, 2014, 05:42 AM
Micro Flyer
United Kingdom, Marham Airfield
Joined Jun 2005
769 Posts
Hello.
I am most of the way through modding my wing. Retracts lights and scale ailerons.
Got to a position where I need some help.
Has anyone got some clear photos of a nose leg retract fitted and working with nose wheel steering?
Chris
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Old Jul 21, 2014, 07:50 PM
Registered User
United States, OH, Columbus
Joined Dec 2012
57 Posts
Hey guys I'll post this here, should not have started a new thread, the last post pretty much answered my question. I'm a bit confused with my plane though because I've seen videos of other guys flying it on a 3S setup as that is the stock setup. Mine was a kit that I took the motor/esc/servos out of a hobby lobby mig-15 that I had a lot of trouble with but still should be the same as the stock setup. I'm thinking it would get airborne if it was a paved runway. Anyway, any additional help would be greatly appreciated.

http://www.rcgroups.com/forums/showthread.php?t=2208542
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Old Jul 21, 2014, 08:00 PM
Old !Bold Pilot
kevinkal's Avatar
United States, CA, Gilroy
Joined Nov 2013
528 Posts
Quote:
Originally Posted by DrEvil3264 View Post
Hey guys I'll post this here, should not have started a new thread, the last post pretty much answered my question. I'm a bit confused with my plane though because I've seen videos of other guys flying it on a 3S setup as that is the stock setup. Mine was a kit that I took the motor/esc/servos out of a hobby lobby mig-15 that I had a lot of trouble with but still should be the same as the stock setup. I'm thinking it would get airborne if it was a paved runway. Anyway, any additional help would be greatly appreciated.

http://www.rcgroups.com/forums/showthread.php?t=2208542
My guess is that your ESC will be way undersized for a 4S setup. I would not do that. How many blades does your 64mm EDF have? 6?
I'm guessing you'll need a 40A ESC minimum to run 4S safely.

Even on 4S, you may find take offs difficult given the small wheel diameter of the stock T-45 wheels. Consider underhand launching it, then landing on grass/pavement. If I were you, I'd take the landing gear off completely and underhand launch it, and land it on grass. Less weight and less drag.

How much does your T-45 weigh on 3S, AUW=?
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Old Jul 21, 2014, 08:36 PM
Registered User
United States, OH, Columbus
Joined Dec 2012
57 Posts
Quote:
Originally Posted by kevinkal View Post
My guess is that your ESC will be way undersized for a 4S setup. I would not do that. How many blades does your 64mm EDF have? 6?
I'm guessing you'll need a 40A ESC minimum to run 4S safely.

Even on 4S, you may find take offs difficult given the small wheel diameter of the stock T-45 wheels. Consider underhand launching it, then landing on grass/pavement. If I were you, I'd take the landing gear off completely and underhand launch it, and land it on grass. Less weight and less drag.

How much does your T-45 weigh on 3S, AUW=?
Yeah I was trying to avoid hand launching as my other edf (hobby lobby/freewing mig-15) kept crashing off of hand launches and I got sick of it. I'd really like to take this plane off of the ground if possible.

The edf fan has 5 blades, it is all of the internals out of this plane http://www.motionrc.com/freewing-mig...m-edf-jet-pnp/, so all the specs are the same, I just bought the T-45 airframe and added the stuff to it hoping for a quick and easy transition to an edf with landing gear.
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Old Jul 21, 2014, 08:47 PM
Registered User
United States, OH, Columbus
Joined Dec 2012
57 Posts
http://www.rcgroups.com/forums/showa...mentid=6950672

Also, here is a photo of how the motor is mounted, I was not sure if I did it correctly, looks like a lot of air can escape?
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Old Jul 21, 2014, 09:11 PM
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fredmdbud's Avatar
USA, MD, Frederick
Joined Jan 2010
3,919 Posts
Yes, the duct should be further back, occupying the space that is currently empty and creating a closed channel from inlet to exhaust.
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Old Jul 21, 2014, 10:18 PM
Flying from Vic Park
Great_Goose's Avatar
Australia, SA, Adelaide
Joined May 2011
2,208 Posts
Have you thought of installing a gyro like Guardian it makes hand launches far more manageable?
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Old Jul 22, 2014, 03:20 AM
Old !Bold Pilot
kevinkal's Avatar
United States, CA, Gilroy
Joined Nov 2013
528 Posts
Quote:
Originally Posted by DrEvil3264 View Post
http://www.rcgroups.com/forums/showa...mentid=6950672

Also, here is a photo of how the motor is mounted, I was not sure if I did it correctly, looks like a lot of air can escape?
ya, just like fredmdbud says, your fan unit is way too far forward. It should be filling the gap there.

Here's a shot of my unit before installation... it's shown outside of the fuselage, but at the proper location:
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Here it is installed with a thrust tube:
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It's a good idea to also install a simple thrust tube, to clean up the airflow.. it will give more thrust.
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Old Jul 22, 2014, 10:15 AM
Registered User
United States, OH, Columbus
Joined Dec 2012
57 Posts
Ok, thanks guys, I was on the fence when I installed the motor. I'll reinstall it and make a thrust tube and see how that works, my guess it should have enough to at least get airborne.
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