Help me fix the throttle!

[mutski]

Can anyone tell me why the throttle quit working on my Sopwith Pup model?

I downloaded a model called the 1917 Sopwith Pup 50%, flew it, downloaded and deleted several variants, flew it again. Then I was editing the model in RF9 to see what channels worked the gun trigger. I don't know what I did, but when I was finished, the throttle wouldn't work. I open the aircraft, rudder, elevator, aileron and gun trigger controls work, but when I advance the throttle, the plane sits still on the runway with its prop idling. If I type K to kill the motor, the prop stops. If I use the space bar to reset, the propeller spins, but the throttle doesn't work.

I tried deleting the aircraft using the Manage User Files function, then imported the original file again. RF9 told me I already had it installed, but allowed me to overwrite the original. Still no throttle. I deleted it and checked the Documents>RealFlight9>Vehicles>CustomVehicles file. It was absent. I imported it again, tried the throttle, and no luck.

I went to edit the model. On the Electronics tab under Servos, Throttle shows as Receiver Channel 3, and the Current Output moves from -1.0 to +1.0 when I move the throttle stick. On the Radio tab, Output Channel 3 moves from -100.0 to +100.0. When I go to Select Controller>Edit, Channel 3 - Throttle moves from no bar to full bar when I move the throttle stick. It is set to Proportional and Y Axis.

All of those settings match those on a P51 model, which flies just fine. So what am I missing? I have attached the original rfx file and several screen shots. I am baffled.

 

[Donamy]

Are you sure you have the throttle servo, connected to the Engine, in the physics screen ?

 

[mutski]

I don't see a place to do that, but it shows that the Throttle Servo is the Throttle Servo.

 

[mutski]

OK, on the Physics tab, it shows the Throttle Servo value = Throttle Servo. If I click the little blue arrow at right, that links to the Throttle Servo, whose input is Receiver Channel 3. When I move the throttle stick, that moves from -1.07 to +0.94. When I click the blue arrow at right there, it links to Output Channel 3, whose current value moves from -106.5 to +93.5 when I move the throttle stick. However,back on the Physics tab, the engine RPMs idle around 680-720 regardless of stick position. So maybe the throttle servo isn't connected to the engine. However, I don't see how to make the connection. How is this done?

Alternatively, I don't see why deleting the model doesn't delete whatever setting is wrong. When I delete it and try to import it again, RF9 says I already have it installed. I can overwrite the previous installation, but the throttle problem is preserved. It is frustrating, because this model worked when I first imported it.

 

[mutski]

Another oddity - I started RF9 with the Dx7 turned off, and the Sopwith Pup opened and taxied down the runway. I turned on the Dx7, and it stopped. Ack... transmitter setting?

 

[asj5547]

I tried it in RF9, if throttle is moved idle to full throttle plane will not move, but if throttle is moved idle to 50 % and allow the plane to start moving then you can go to full throttle and plane fly's nice.

 

[mutski]

I tried it in RF9, if throttle is moved idle to full throttle plane will not move, but if throttle is moved idle to 50 % and allow the plane to start moving then you can go to full throttle and plane fly's nice.

Well, I'll be darned! Same result here. I guess that means I always start at full throttle? I had not realized that. Thanks SO much for sharing this!

 

[asj5547]

Start at idle and apply gentle amount of throttle until the model moves, then the throttle responds normally in flight.
Sure is a nice model.

 

[mutski]

Start at idle and apply gentle amount of throttle until the model moves, then the throttle responds normally in flight.
Sure is a nice model.

Maybe it's programmed to flood the engine if you overdo it. It is fun to fly!