The Arm v3.0

Cosmetic changes & tweaks

There were a few things I wanted to improve, internally and I wanted to adjust the hand slightly. While I was there I created a new outer shell.|

Less visible fasteners, with the advantage of an easier-to-remove outer shell. I did spend some time modelling different shell designs - aiming for something more organic in appearance, but my strengths are in parametric modelling so I ended up with a slightly different look to the v2.5 arm.

Hands, quick release and bikes

The arm, the new hand and the internals were all working well with the bikes I had at the time. After the purchase of my 2024 Z900 a few things needed slight adjustments. The hand’s outer profile was adjusted, the quick release was altered to increase grip strength and the internals were shifted slightly.

I have limited muscle strength in my deltoid, so the wrist roll is limited to suit - the arms wrist roll capability is limited to more of a two-position set-up currently. I switch between positions to suit the bike I’m riding at the time.

Version 4.0?

Maybe. I would like to replace the core chassis aluminium components with carbon fibre and delrin to reduce weight further.

I’m back to being a workaholic for now, as well as focusing on another more advanced prosthetics project, so time is limited.

I’ll see how I go with free time, maybe spend some time learning to surface model and redo the outer shell one more time.

Pro’s;
It’s prettier.
Some weight was shaved off.
Suits a greater range of motorcycles/riding positions.

Cons’;
It could be slightly more pretty to look at - needs a new style.
Some more weight could be shaved off with the right materials.