Official Freewing Twin 70mm AL37 Airliner Thread

[I-fly-rc-aircraft]

Yep and as I posted the blue box does not disable the steering servo when retacted. Xviper's set his up on a separate channel that's why his ssrvo is disabled when retracted.

Mike

Thanks, I'll need to get another rx.

[MikeT]

Any response from Motion?

Yep and as I posted the blue box does not disable the steering servo when retacted. Xviper's set his up on a separate channel that's why his ssrvo is disabled when retracted.

Mike

[I-fly-rc-aircraft]

Sent a info request to Motion just to clear this up.

Mike

Any response from Motion?

[themudduck]

Excellent video. What camera did you use?

Thanks guys! This was with a run-cam 2 (available from Motion RC) - mounted to the bottom rear of the fuselage with a freewing weapons mount (the camera is sitting inside one of these)

[Aros]

Dig the cam placement!

[Swarick]

Excellent video. What camera did you use?

[themudduck]

I shot a video earlier this evening with a camera mounted under the fuselage, its a pretty neat view because you can see the gear and flaps. At the end of the video when I landed the camera bailed out! First time that I landed on grass with this model, it worked fine.

https://youtu.be/zq8zVxWawOQ

[MikeT]

PLEASE NOTE MY RETRACTION IN THE ABOVE POST. SORRY! (Must be Alzheimer's.) (Also having over 50 active planes doesn't help.)

LOL we all have our moments.

Mike

[xviper]

PLEASE NOTE MY RETRACTION IN THE ABOVE POST. SORRY! (Must be Alzheimer's.) (Also having over 50 active planes doesn't help.)

[xviper]

On other planes, the slider does what Mike says. It slides both as the retract is being operated AND when the steering is worked when retracted. In the AL37, it only is there so that the rod does't bind when the retract is operated (since the steering servo doesn't move anytime the gear switch is in the "gear UP" position. On mine, as I said, when the switch is thrown to "gear up", the steering servo goes dead, even if the retract is still moving. Listen carefully, it may be the rudder servo you are hearing.
In the case where the steering servo IS moving no matter what the gear switch position is, double check to make sure that the steering servo is plugged into the correct pins on the blue box. There should be a unique pin set just for "steering" and another for "rudder".
In a defective blue box, "crosstalk" should be minimal, usually not full travel.

NOTE: EDIT --- WRONG INFORMATION!! MY APOLOGIES!

I took a look at my TX. I HAVE A MIX FOR THE STEERING SERVO. That's why mine does what it does.

[MikeT]

MikeT. Mine does what yours is doing but it isn't supposed to.

Tom

Sent a info request to Motion just to clear this up.

Mike

[I-fly-rc-aircraft]

MikeT. Mine does what yours is doing but it isn't supposed to.

Tom

[MikeT]

The rod is there to rotate the strut when the gear is down. The rod from the servo is to adjust center so it tracks straight. If I understand it correctly, the blue box (MCB-E board) is supposed to inhibit the steering servo when the gear is up. If/when the blue box isn't doing it's job the steering will still be enabled when gear is up.

Tom

The servo connector slides up and down , forward or back as the retract is retracted or extended. When retracted the slider moves freely back and forth ( at least on mine it does) as rudder input is applied. The tracking adjustment is on the servo end, If the connector on the slider rod moved up and down when the gear was extended you would have no steering. This set up is commonly used.Like I said I need to check mine out closer next time I fly it.
Mike

[I-fly-rc-aircraft]

Than why is there a need for that rod on the nosegear that the servo arm slides on when in the up position? I need to look at mine next time I'm flying it but I know for a fact that the servo is moving when in the up position I can hear it.

Mike

The rod is there to rotate the strut when the gear is down. The rod from the servo is to adjust center so it tracks straight. If I understand it correctly, the blue box (MCB-E board) is supposed to inhibit the steering servo when the gear is up. If/when the blue box isn't doing it's job the steering will still be enabled when gear is up.

Tom

[MikeT]

Mine must be "crosstalking" since it still steers when up.
Tom

Than why is there a need for that rod on the nosegear that the servo arm slides on when in the up position? I need to look at mine next time I'm flying it but I know for a fact that the servo is moving when in the up position I can hear it.

Mike

[I-fly-rc-aircraft]

Just tested the steering relative to the gear position. As soon as the switch is thrown to retract the gear, the steering servo on the front retract goes dead and remains that way. As soon as the switch is thrown to put the gear down, the servo begins to work even if the retract has not fully extended. When it's "dead" there is absolutely no movement in the servo, not even a little when the rudder stick is moved, even to its fullest. If yours has some movement, then that tells me there is some "crosstalk" within the blue board.

Mine must be "crosstalking" since it still steers when up.
Tom

[Swarick]

There is NO lights on the nose strut of the Boeing 8MAX. Older models of the 737 had a taxi light on the nose strut, but the 8MAX has LED light arrays in the wing roots that are aimed where the taxi light used to point.

[xviper]

Just tested the steering relative to the gear position. As soon as the switch is thrown to retract the gear, the steering servo on the front retract goes dead and remains that way. As soon as the switch is thrown to put the gear down, the servo begins to work even if the retract has not fully extended. When it's "dead" there is absolutely no movement in the servo, not even a little when the rudder stick is moved, even to its fullest. If yours has some movement, then that tells me there is some "crosstalk" within the blue board.

[xviper]

Doesn't the blue box take care of that? When my retracts are up the steering is disabled.
I came into this a little late so maybe I misunderstood the original post.

It might. I've never paid much attention to it. I do the mix thing on planes where it's hard to zero the steering independent of the rudder. This one never presented a problem so I didn't have to deal with it. The plane is hanging in the next room. When I get a chance (and remember), I'll throw a battery in it and check. If it's works through the blue box, then it should stop moving completely when the gear is up. If there is still some movement, then we go back to my theory that these blue boxes can have some slight "cross talk".

[LowandSlow]

Then you must rely upon the slider mechanism to NOT move the strut when the servo moves OR, like I do, get a higher channel RX.

Doesn't the blue box take care of that? When my retracts are up the steering is disabled.
I came into this a little late so maybe I misunderstood the original post.