Redesign of Weapon Motor Mount

Due to poor design on my part, I've had to do a redesign of the weapon motor mount. I didn't have proper clearance around the weapon motor shaft and it was unable to spin up. I have since ordered some Aluminum Motor Mounts and plan on mounting them inside the chassis with this new piece that I designed.

Overall, I think this new piece should solve the issues. Potential issues with this part is it failing due to the force the motor exerts on it, however It has been designed to withstand a lot of force from the top plane inwards towards the center without having to rely too heavily on the screws that attach it to the chassis.

Parts Have Finished Being Fabricated

Pictured is a few of the pieces I had fabricated, everything else that was fabricated are just duplicates of the pieces already pictured. Top left is the drum pieces, top right are the side plates that mount the majority of the electronics, bottom left is the top plate, bottom right is the bottom plate.

I received the pieces back from TruFab on Tuesday. The parts came out beautifully all within the necessary tolerances for the other parts to press fit together with only some minor grinding. Currently doing a rough fitting of all the pieces and plan on rewiring once I see how much space I have to work with inside the bot.

When testing the weapon motor mount inside the bot, the component suffered failure in one of the mounting sockets, currently working on a redesign of the weapon motor mount and considering switching to this pre-made mount from Hobby King. However, this would require a redesign of some of the internal structures.

Final Fabrication Update

Side plates (left), drum pieces (top right), and the remains of the 4140 steel plate that the drum pieces were cut from (right)

I received an update email from TruFab this morning and attached was the image shown above. The side plates and drum pieces have been cut out.

It appears that what they have left is the side armor and top and bottom plates which will all be water-jet cut out of the 1/16" poly-carbonate, and the counter sinks in the side plates. Their machinist is out for the holiday so the counter sink work won't happen till either Friday or next week and the entire job is expected to be finished by mid next week. Super excited to get the parts and start the final build. There are some small adjustments that I will have to make in concerns to weight as the weight changed slightly due to the material change for the drum pieces. Possibly might have to go to 4 drum pieces instead of 5, additionally I want to design a front wedge/scoop using the Lexan to attach where the side armor will be attaching on the side plates to allow the bot to win battle for the low ground.