Trim Wheels - turn/deflection ratio ?

Can someone of the testers tell me how many times I have to turn the appropriate trim-wheel to get a 10° deflection reading on the scales ?

I want to build a trim-wheel box with working scales like on the attached image, and I heave to know the correct ratio to get the right gears - so that my build will react the same like the trim-wheels in the simulation.

BTW- The stick is already finished DIY P-51D style grip for HOTAS Cougar

FWIW, I investigated same subject in the maintenance manual. Nothing definitive said and the drawings are not clear, but my final conclusion was that I'd guess at direct linkage between aileron and rudder trim knobs and pointers, with gearing (of unknown ratio) on the elevator trim.

I'm also interested in data on the implementation!

Go to the 4:00 mark. No ratio, but a good explanation of use. Also its a C model.

Funny, doesn't look like a C model, and when they showed a closeup of the model type on the fuselage, it said P-51-B-10NA. Look at 1:30. It's right there. If it were the C model, it would have a bubble canopy. As well, I'm pretty sure he says that this plane was built in 1942, at which point C models weren't built till, iirc, 1943.

makes no sense!

Maybe they took video from another aircraft and edited it in.

nope. same airplane. Disappointing that not only the commentator got wrong, but the individual flying it. *sigh*

TP-51C, it's a dual-controlled P-51C. Not all B/C's had the bubble (or Malcolm Hood) fitted, some retained their 'birdcage" side-hinged canopies.

Can someone of the testers tell me how many times I have to turn the appropriate trim-wheel to get a 10° deflection reading on the scales ?

 

I want to build a trim-wheel box with working scales like on the attached image, and I heave to know the correct ratio to get the right gears - so that my build will react the same like the trim-wheels in the simulation.

Currently it takes one full turn of the trim wheel to move the needle 10 degrees. Of course, the model is WIP and this may change in the future.

Many thanks for giving this info - that sounds reasonable!

(and also reflects my research in other simulations and web sources)

:)

So I will build it that I will have a minimum of two turns at the aileron/rudder wheel and a minimum of 4.5 for the elevator. Fine adjustments will be done with the axis-tune panel.

.

nope. same airplane. Disappointing that not only the commentator got wrong, but the individual flying it. *sigh*

I flew that very plane in the video. It is a P-51C. The "B" label on the fuselage is actually just part of the Paint Scheme they're using.

Off of the foundations website:

"One of the most famous of these modified two seat fighters was used by Dwight Eisenhower and was named “The Stars Look Down”. Ike rode in the back seat of that Mustang over the beaches of Normandy to direct the invasion during D-Day"

The Collings Foundation is a great group of pilots and staff. The P-51 flight is highly recommended :thumbup:.

We pulled 6.5gs and did a bunch of aerobatic maneuvers, even logged the time in my actual log book. :pilotfly:

Do you remember the ratio for the trim wheel? Or how many turns do you think it turned?

Nope I was to busy grinning from ear to ear.

I thought I'd add the tid bit about the paint scheme, because I asked the same question. That brought back to many memories to not share.