Off season special project (Gearbox)

[Dragonslayerend]

So this is our new gearbox about to be machined. It's for a special project we're doing. I wanted to ask if it looks okay and not suspicious about whether it will fail.
Specs:
-4 Cims
-9:1 GR
-Dual Output Shaft
-14lbs


https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t35.0-12/10612017_654542821307776_963012347_o.jpg?oh=85962f 27b749b00fec3fb2ce78d819c0&oe=54043CB8&__gda__=1409567397_1731ffa08bc754d4380dd1044e156ef 4
https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t35.0-12/10638898_654543977974327_614849481_o.jpg?oh=a653e9 35938daee12c250c4f993645e4&oe=5404328B&__gda__=1409571220_887be08ac5f76b5db90515df7ad5763 6

[EricH]

Plate and gear materials? That's probably got more to do with whether it'll fail than anything else combined...

[Dragonslayerend]

It's AL 7075 for gears, AL 6061 for plates and shafts. besides the cims the rest is all 316 stainless steel.

[magnets]

So this is our new gearbox about to be machined. It's for a special project we're doing. I wanted to ask if it looks okay and not suspicious about whether it will fail.
Specs:
-4 Cims
-9:1 GR
-Dual Output Shaft
-14lbs


Looks really good!
From just looking at it, I don't think it would fail. It's hard to get a good view of the plate design because they're dark black, but it seems like the center part with the three center bearings isn't too well connected to the outside parts. Check out picture of 254's gearbox plate design for some inspiration if you'd like.

[Dragonslayerend]

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t35.0-12/10650410_654543121307746_291154979_o.jpg?oh=09af46 acdac46ce3f476026d4579fb19&oe=5403CFD2&__gda__=1409548431_b9385d124e78b7ba9261a7c5e8c4251 c
Here's the plate view

[asid61]

It's AL 7075 for gears, AL 6061 for plates and shafts. besides the cims the rest is all 316 stainless steel.

6061 shafts? Make them 7075 at least, or some kind of medium carbon steel if you can.

[magnets]

6061 shafts? Make them 7075 at least, or some kind of medium carbon steel if you can.

For .500" hex shafts that aren't cantilevered in gearboxes, 6061 is likely strong enough.

That said, vex pro sells .500 hex shaft that is a great fit for their products at a pretty reasonable price.

[Dragonslayerend]

Hmm this thing is supposed to last atleast 3 years. So yeah might change shafts to 7075 then.