pic: 254/968 Transmission
 

Re: pic: 254/968 Transmission
 

That looks very clean, is it only one speed transmission though?
The entire thing's only 1 lb, what are the sideplates made of? Looks like some kind of polycarbonate to me.

Re: pic: 254/968 Transmission
 

I think someone must have accidently turned down the gravity in your shop...

Re: pic: 254/968 Transmission
 

Wow, I would call that an engineering marvel. A 1 lb transmission.. really goes to show how light you can actually get. Great job, if someone came up to me and told me they are going to make a 1lb transmission, I would ask them to sit down, drink some water, and rethink their statement. Man, this is amazing. Nice job, bravo. :)

Re: pic: 254/968 Transmission
 

did you guys zero it before putting that caliper on there? or is that 1 lb including its weight? Because that would put your tranny at even less then 1 lb...

Re: pic: 254/968 Transmission
 

ahhh, I think your scale is broken.

Re: pic: 254/968 Transmission
 

We zeroed with the calipers on it. The sides are made of Delrin. It does shift. It may be a little deciving because that is the weight without the shifting piston and the scale goes in half pound increments. It is really about 1.2-1.3 pounds.

Re: pic: 254/968 Transmission
 

we have that same scale, and the same problem. I constantly have to remind everyone that 2.5 lbs over could be anywhere between 2.3 and 2.7 over.

Re: pic: 254/968 Transmission
 

Wow. I want one.

Re: pic: 254/968 Transmission
 

Our scale looks exactly the same but it doesn't go in .5 incriments, but it goes in .2 incriments.

Which actually just as unhelpful as the .5

Re: pic: 254/968 Transmission
 

I bet two would be more useful.

If any one other than 254/968 posted this I am not sure I would believe it, any chance at getting a top view?

Re: pic: 254/968 Transmission
 

Sure. I'll post one when I get home from work.

We'll probably have a full bot picture up in a couple days. We didn't remember to take any pictures of the comp bot before ship, and we havent yet fully assembled the practice bot.

Re: pic: 254/968 Transmission
 

I will be posting more pictures and details of the transmissions in a few days when I have some free time.

For reference, this gearbox is Kirk Oden and my senior project as Manufacturing Engineering students. As such, be prepared for some rather detailed analysis and explanations of chosen materials and processes as well as work study and analysis simulations of assembly and maintainence times. At the very least we plan on sharing our findings and suggestions on possible changes/improvements that people may want to make if they chose to pursue something similar.

In the next few days expect a new post in the technical discussion with many more pictures of the assembly and detailed part pictures, as well as explanations of the manufacturing processes, coatings, material selections and properties, part weights, etc.

Re: pic: 254/968 Transmission
 

That is neat and incredibly light. Wonderful

Re: pic: 254/968 Transmission
 

Sounds Awesome. You go to Cal Poly Pomona right?