Spring loaded nightmare! Pig bat-signal deployed! (1 Viewer)

[Hobbs81]

Am prototyping a rear glass gear that @fj55-100 3D printed. Fits like a glove, had to remove the odd spacer that lived under the stock broken gear. It spins the worm gear seemingly perfectly. Oddly now that I have it together the arms travel very smoothly. But only thru about 25% travel then they stop (and I can hear the new gear grinding). I do not believe it’s the mesh between the new gear and the worm gear. I’m kinda stumped, next step is to, sadly, pull the motor without the arms clamped. I’m sure I can get the timing correct later () not sure I can do it with getting mangled by the spring tension. Any ideas?

 

[ERNRAM]

Clamp the arms with a pair of vice grips at either location

 

[scrapdaddy]

Did it hang up while in the tailgate, connected to the window or on the bench? Same spot each time?

 

[Hobbs81]

Did it hang up while in the tailgate, connected to the window or on the bench? Same spot each time?

On the bench. Same place each time. As In the last pic. Basically goes “up” from the location in the picture about 3-4” then stops dead. You can hear the motor still trying, no joy.

 

[ERNRAM]

The position in our picture is the almost the max upward position.

 

[Hobbs81]

The position in our picture is the almost the max upward position.

Ya, it just clamps in the vice best upside down, . So it actually will only go about 25% up then sticks tight.

 

[bobm]

So whats binding?? You need to go buy process of de elimination

 

[bobm]

The 3 to 4 inch spot is ya issue! Focus on that

 

[scrapdaddy]

Maybe take the motor out and see if the arms cycle by hand without snagging. Something is hanging it up.

 

[PabloCruise]

The 3 to 4 inch spot is ya issue! Focus on that

Is that what she said?

 

[Hobbs81]

So whats binding?? You need to go buy process of de elimination

Ya, unfortunately that means pulling the motor again… and the springs.

Is that what she said?

slander!

 

[RUSH55]

Is that what she said?

So classic

 

[PabloCruise]

So classic

Impossible for me to resist - just pure low-hanging fruit!

 

[WarDamnEagle]

So without the assembly and window installed, how are you determining where 100% up and down are?

 

[ERNRAM]

Simple...

If the driver toothed arm went any further, it would fall off the pinion on the motor

 

[ERNRAM]

Simple...

If the driver toothed arm went any further, it would fall off the pinion on the motor

View attachment 3322738

I know this is almost 100%....

 

[ERNRAM]

I would bet my BS Mechanical Engineering degree from UTexas on it

 

[RUSH55]

Simple...

If the driver toothed arm went any further, it would fall off the pinion on the motor

@ERNRAM is right. Nice catch

 

[Ry24000]

From your picture I believe your maxed! Window is in full upright position! I think?

 

[Hobbs81]

@ERNRAM is right. Nice catch

Yes, it does go beyond the gears in the “up” direction (down in the picture cuz of how I have it clamped in to the vice.). So going down “up” in the pics, it just goes a few inches and gets stuck.