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front wheel question..... what is this?

Old 09-02-2008, 11:44 PM
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Spacemonkey71
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Default front wheel question..... what is this?

On the Super Box Fly40 that I'm rebuilding, it has a tricycle landing gear. The front wheel has a "T" attachment right above the "spring coil".... WHAT IS THIS THING FOR???? I can't see any way to mount a servo control arm to it, so I'm just a little baffled as to what this thing is supposed to accomplish... My other 2 planes don't have this kind of front wheel setup, so this is new to me.

This is probably a "oh, give me a break!" question for most of you, but I'm a little stupid

It's the "white" (well, "greasy white", thing in the picture right above the spring coil) that I'm talking about. And should the "coil" be facing forward or backwards?

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Old 09-02-2008, 11:53 PM
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brett65
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Default RE: front wheel question..... what is this?

The control rod connects to it from the rudder servo for steering it. You're prolly saying to yourself now OH, Duh! Not a big deal though, it is supposed to have a small rod like the throttle uses that has a z bend on the end that connects to the steering wheel.
Old 09-03-2008, 12:06 AM
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Default RE: front wheel question..... what is this?

that's what I figured it was for, but HOW do you connect it to a servo??? it's on the underside of the plane and there aren't any holes/spots for a rod to poke through to the guts of the plane.... should I put 2 90deg. bends in it to get it down the underside of the plane and up through the stomach to get inside and then connect it to the rudder servo?

I've got control arms LONG enough for this, I just couldn't find a HOLE on the underside where this had been done before; ergo, the baffled "*** is this thing?"....
Old 09-03-2008, 12:31 AM
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Default RE: front wheel question..... what is this?

Since I have the smaller version of the same plane, I can tell you how to do it. Mine comes out the bottom of the fuselage just behind the firewall. It can curve up to the servo tray, it won't bind up. Just be sure to get some tubing mounted to put it in. I would get you a pic but I converted mine to a taildragger.

BTW, you're coil on the nosegear should be 180 degrees opposite of where it is in the pic
Old 09-03-2008, 12:39 AM
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OzMo
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Default RE: front wheel question..... what is this?

a piece of sulivan golden rod( flexable plastic rod in a plastic tube) or similar fastened to the rudder servo arm's oposite side. the arm on the nose wheel gives you the option of either side....depends on your rudder servo. this way the nose wheel steer s while on the ground and the rudder for in the air all on the same srevo.
Old 09-03-2008, 12:58 AM
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Default RE: front wheel question..... what is this?

"BTW, you're coil on the nosegear should be 180 degrees opposite of where it is in the pic "

shows you how much "I" know about this setup, doesn't it!

Thanks for all the tips! now that I know what it's FOR and good method to rig it, it shouldn't be a problem

Much Appreciation !!!!!!![8D]
Old 09-03-2008, 08:48 AM
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Default RE: front wheel question..... what is this?

Just drill a hole in the firewall and run a wire with a 90 degree bend through the hole to the rudder servo (You may have to drill the opposite side to what I have shown here)
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Old 09-03-2008, 09:24 AM
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Rodney
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Default RE: front wheel question..... what is this?

Also set it up so you get very little throw at the nose gear. You do not want more than 10 degrees at full throw, even 5 degrees will probably be adequate. To much and you will find it hard to taxi without nosing over.
Old 09-03-2008, 09:52 AM
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Spacemonkey71
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Default RE: front wheel question..... what is this?

"To much and you will find it hard to taxi without nosing over. "

.....and this is going to be different how? Only "I" can crash a plane BEFORE flying it!

(as a side-bar: my father-in-law came in a little "hot" in a low wing Piper -"real" plane, not RC- one afternoon during his early flight training (he's a licensed private pilot now) and "bounced" a little on landing......the nose dipped and he banged the prop RIGHT off the runway! [:@]OUCH!!!![:@] It was a "four figure" pricetag landing! You think breaking a prop on YOUR plane stinks, try it on a REAL plane [:@] they cost a little more than $2.59.......and that's not even mentioning the fact of having to rework, check, and re-certify the ENTIRE engine !)

Rodney, Now that I have an idea of WHAT that cross bar is, I just found a hole in the firewall where this was done. THANKS! I wondered what that little hole was for....
Old 09-03-2008, 10:09 PM
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Default RE: front wheel question..... what is this?

There are days a tricycle nose gear can just be a real nuisance.

Like when your nose wheel disappears in a . . . nose wheel hole. Then all three wheels point up into the air and the propeller makes itself into kindling!
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Old 09-04-2008, 12:00 AM
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Default RE: front wheel question..... what is this?

The steering wheel appears to be turned 180 degrees. The coil on the strut should be facing toward the rear and there should be a flat spot on the strut to locate the proper position of the steering arm. Check it out.
Old 09-04-2008, 11:07 AM
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Default RE: front wheel question..... what is this?

Hi Spacemonkey, After you get the linkage for your steering set up, remove the steering gear and file a flat spot in it so that when you reinstall it the allen screw tightens up on the flat spot. >>>-> Bill

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