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Removing entry step


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After the M20J was introduced all the Mooneys have fixed steps. Although you may have the agility to step on and off the wing it is not the case for everybody, specially for seniors, children, overweight and handicap. If there is no step most likely they will step on the flap. Why take the risk of having someone falling on the ground and then suing you.

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Ours is a 77 J and has no step.  Parts catalog says "optional".  Ours may be one of the few that doesnt have it.  I read somewhere it gives you five knots easy.  Perhaps 8 with a good wax job.  :)

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I don't understand why the 201 has the fixed step? I wonder what the actual advantage in knots really is?  If five knots is actaully the benefit, I'd be taking it off. A light weight step stool could be carried in the luggage compartment.

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I had mine off for chroming, and it doesn't weight but a pound at most, and the 1/16" cable, crank and mounts can't add up to more than a few pounds. If it's retracted or extended in flight you can def feel the acceleration/deceleration ! Same with the vent that opens on top. I don't see the airfoil shaped step causing enough drag to slow you by 5 kts

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I have owned several 64 E's.  The step cranks up.  Crank is located next to your left knee.  If you have a laser extended baggage area the retractable step has to go.  I took mine off when I extended the baggage area.  I still have most of the parts if you want to repair the retactable step.


Walt

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From what my poh says, the first 300 or so 64 e models don't have the crank after sn # 300 or so it looks to be vacuum actuated. 


 


Just wondering what the real world improvement would be in speed.   For the most part, it's only me flying the plane.  No pax. 

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gmcd,


Best thing to do is to tke a picture of your step and post it.  If it is the original step it is costing at least 5mph maybe more.  If it was replaced with a later style the cost will be less.  It is probably worth the time to take a picture or compare it to another 64 with a step.  The 65 models began the vacuum operated step.  It was also the year the Brittain wing leveler was started.  The crank up step and the vacuum step look the same.

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I've flown already with the step down because I forgot to raise it.  It will cost you about 5 knots on a model with the retractable step.  However, for the models where the step is fixed I'm sure it will not be as much; 2 to 3 knots would be my guess.  The fixed steps are more aerodynamic than the retractable steps.
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It's hard for me to believe that the fixed step can decrease speed by as much as 5 knots. At a time when LoPresti was trying to squeeze out every last knot by looking at the airframe from top to bottom, it seems doing something with the step would have been a no-brainer.


If it accounts for so much drag, why aren't we flying around in a Mooney 206?


 

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Don't have a step neither,it was indeed an option in the early J's. I am happy without it...It's a free speed mod..;-). My previous aircraft was much more difficult to climb in. The wing was twice the height as in the Mooney, you had to use your knees first to climb up to the wing....BTW I am correct the 201 mph was achieved without the step right..Wink


 

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GMCD, the photos you posted look more like the 201 step.  What serial number M20E are they from?  I have sn 364, it has the crank down step.  It is a much blockier set up and it easily costs anywhere from 3 to 5 kt when down.  If I leave it down by accident, my first clue is typically that the ball is slightly out to the left.  I agree with other, 201 step is more aerodynamic, so it should be less drag.  I would guess it's worth 2 to 3 kt. 

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Is it possible yours was retrofitted with the 201 step?  My parts manual, which covers the B, C, D, and E shows the mechanical crank step apparently going back to the B.  These steps have lots of drag because they have a large square tube where the 201 has a small diameter tube.

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gmcd,


That step is from a later model Mooney.  Probably costs a couple of knots.  It could be removed but loading baggage and passengers a little easier with it in place.  The step on my TLS is still in place because loading baggage is a bigger deal with a large baggage area.  If you look at the Photo Gallery right now a picture of a step like what was on your is posted within the first 12 pics.


Walt

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Quote: takair

GMCD, the photos you posted look more like the 201 step.  What serial number M20E are they from?  I have sn 364, it has the crank down step.  It is a much blockier set up and it easily costs anywhere from 3 to 5 kt when down.  If I leave it down by accident, my first clue is typically that the ball is slightly out to the left.  I agree with other, 201 step is more aerodynamic, so it should be less drag.  I would guess it's worth 2 to 3 kt. 

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