Tips for my Mechanism

[AtomicSheep]

Hi Guys, was hoping to run this past some different eyes to see what can be improved and perhaps changed altogether.

https://youtu.be/BBIsmKwa1hU

basically, you pull on the lever with your hand (index and middle fingers) on the white handle to pull it out of the detent, move it to a new location and release... a spring (not shown, but it will attach to the rod coming out of the the square bit and attach to somewhere at the bottom of the rotating arm) will pull the lever back down into the new detent. The rod that I mentioned previously goes through the lever itself and comes out the other end in a similar fashion to the front, you can just see the tip of it from the back, so there will be two springs, one at the front, one at the back. The lever moves inside the square rotating arm thing like a piston.

The thin rods (one that slides into the detents, and the one that fixed the lever to make sure it doesn't rotate inside the cylinder) are 3mm thick but as I type this, I'm realising they can be thicker.

 

[BUGGAR]

First, count and list the number of manufacturing tasks to make this thing.

 

[IRstuff]

The entry points should be rounded off to make it easier to get the pin into the slot. Most transmission levers have rounded paths.

TTFN
I can do absolutely anything. I'm an expert!
faq731-376 forum1529

 

[MadMango]

You could simplify the mechanism a bit. You don't need the square bit with the slot, pivot hole, and shaft hole. All those features could be designed into a larger diameter shaft that is being depressed. Maybe if you reverse the direction of your detents, you could get rid of one spring, and only have a compression spring pushing the lever up into those detents. User operation would remain the same.

"Art without engineering is dreaming; Engineering without art is calculating."

Have you read faq731-376 to make the best use of these Forums?

 

[Tmoose]

http://cdn.protoolreviews.com/wp-content/uploads/2014/03/EGO-56V-lawn-mower-height-650x433.jpg

On mowers etc All the lateral motion in and out of each gate slot done with flexibility in the lever mount I believe.

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1960 Ferrari gated shifter

https://www.pinterest.com/pin/507640189229335285/

The now iconic Ferrari 250 GT SWB was designed as "A tool to win races" .

http://www.ferrari250.com/Photo-Gallery.html

http://www.ferrari250.com/images/Ferrari TR Gate 875.jpg

Ferrari style shifter gates are Now considered a fashion accessory for many makes.

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[AtomicSheep]

The hardest bits to manufacture will be the boxy thing with the cylinder for the lever and the white handle itself. No idea how I'm going to do the latter. The former, I'm thinking of breaking it down into smaller pieces which I will fit in a jig and glue together to make sure the cylinder cutouts will line up.

All the other pieces are done with just one fixture.

Thanks IRstuff... I have rounded off the entry points.

This is not a transmission lever. The lever must be pulled/lifted to be removed the detent.

What does everyone think about the main pivot joint, should it have a ball bearing, rather than a simple axle?

 

[3DDave]

Looks like an airplane wing surface control. I think they used to use side-detents, much like lawnmower wheels.