Gas strut newton for elevation

[kurt-olsson]

I have read and search this forum and it looks like most people are using gas strut for elevation and springs/rubberband for roll.

I am thinking of 100n and 10cm gas strut. U thing its realistic/good?

[jonesthesoftware]

Hi
don't know if this helps but the 767 manual gives the following figures
Rotation of control wheel is +65 deg -65deg @37-50NM
Column angle is 9 deg fwd and 11 deg back @ 130-420NM. Rest position is 5 deg fwd.

so I guess if your strut is located at the base of a 1 metre long column then it requires 130-420 Newtons force? I assume these figures take into account the varying forces required by ascent/ descent wind/flaps resistance?

regards
geoff

[bernard S]

i assume you are using the strut for centering ..not feel

[kurt-olsson]

i assume you are using the strut for centering ..not feel

I think both. To centering but i had in mind that the yokes will feel realistic with the resistance that comes from the struts. Maybe i am wrong and need spring aswell?

[kurt-olsson]

Hi
don't know if this helps but the 767 manual gives the following figures
Rotation of control wheel is +65 deg -65deg @37-50NM
Column angle is 9 deg fwd and 11 deg back @ 130-420NM. Rest position is 5 deg fwd.

so I guess if your strut is located at the base of a 1 metre long column then it requires 130-420 Newtons force? I assume these figures take into account the varying forces required by ascent/ descent wind/flaps resistance?

regards
geoff

Hi, it does help! Confirms my 100-150nm strut. Thank you

[bernard S]

emm.  well.bud there is a distinct difference between centering and feel...   

what i mean by feel is not the forces required recentre the control uprights .. .. may i suggest that you now do control loading .. this will give you the feel... you add8ng struts springs god knows what else ..lol.. your almost there in that dark place that requires a commitment    control loading even on x1 control surface is going to be the best bang for your buck in your entire sim build.

[jonesthesoftware]

Hi
if you look at the attached pdf you can see how I used 2 gas struts(or gas springs) to give both centreing and resistance/force feedback to my column. I used adjustable gas struts to give different amounts of force for  back and forth
If you want the cad version let me know.
regards
geoff

[kurt-olsson]

Thanks!
One question, are you happy with your implementation?
Does it feel good when flying?

[jonesthesoftware]

I'm happy with it as it self centres and gives force feedback but as I have never tried the real thing I have nothing to compare it to
Regards
Geoff

[Ed]

I have read and search this forum and it looks like most people are using gas strut for elevation and springs/rubberband for roll.

I am thinking of 100n and 10cm gas strut. U thing its realistic/good?

I used both springs and struts for elevator, and springs for roll. You can see the details on my website. The struts give it that stiffer feel and the springs tend to help it centre. I like the way it feels and will do me until I have funds t go OEM or ACE.

[kurt-olsson]

I went with springs for the roll. Really easy to implement with the OEM part and it feels nice and centering is perfect 97% of time.

They are noisy but it will be covered in the floor and with other sounds i dont think i will be bothered.

[navymustang]

Here is another approach to using a spring.
The spring has a carriage assembly that travels through the middle of it. This means the spring can be pulled to compression from both sides.  In this photo, the floor of the sim is at top, the yoke column is coming through the floor to the right. The spring is attached to a  point at the base of the column below it's pivot point, then attached at the other end to the sim main frame structure. The control column can then move forward or back, compressing the spring in either direction. The photo is of the co-pilot side, left of photo is nose of aircraft. Other components visible here are rudder pedal and toe brake mechanics.

[Trevor Hale]

Thats a slick Idea...  Spring works in both directions..  Nice.

Thanks

[kurt-olsson]

I am bumping this again since i have implemented roll with a rubber chord. Clean installation and easy to adjust if i want to.

But the elevation had some problems. I use 8mm chords and they need to be veeery stretched to hold the weight of the columns. Either i have to use like 4-5 rubber chords on each side to get it stable but they are reeeealy tight when full deflected i have to have heavy bolts for making sure it sticks.

I would like to try heavy springs instead.

Can anyone point me into a spring that can give the right feel for elevation?
Maybe a spring used in your own setup.

Thanks.

[seedosip]

Hi,
While constructing the dual yoke I have tried a lot of different set ups and ended up with 300N gas struts for elevation. It gave me the best centering and feel. Hope this helps and good luck in construction!

Cheers

[archen]

Without mentioning the arm the force acts on 300N doesn't say much. I think you need to specify the arm as well.

Br
Anders

Skickat från min SM-G955F via Tapatalk

[seedosip]

Indeed, you are right, that's was the reason for me that I had to change different struts and spring to test on huge arm produced. Attached is a rough schematics of the strut vs arm of the control column.

[bernard S]

easier solution  buy elevator feel unit use springs for centring

[kurt-olsson]

Small update. I think the 150nm feels fine, but i actualy dont like this solution and will prob change to rubberband in the future.

I dont like have to go over the "neutral" position. I dont think you feel it in the real 737 once the hydralics is on.