19-09-2010 17:44

gallo26

Re: pic: 2 Speed Rev 2

You know RC... I'm not surprised by this Your CAD always looks amazing! Your work is very impressive! Very clean and elegant!

19-09-2010 18:13

Chris is me

Re: pic: 2 Speed Rev 2

Nice model / gearbox!

How often did you guys play at 16FPS? When looking into drive boxes this year, I was looking at the 6 motor setup, but it seemed that adding 6 motors let you run at ~9.5 FPS while pretty close to traction limited. Was the high gear useful for your team, or just something nice to have?

Also, can I have two?

19-09-2010 21:39

Ether

Re: pic: 2 Speed Rev 2

what are the gear ratios ??

20-09-2010 02:58

R.C.

Re: pic: 2 Speed Rev 2

Chris,

Hmm interesting question, I don't know if we ever got up to the full 16fps. I don't have anything quantitative but:
-We were quick
-The acceleration was amazing
-It was nice being able to get from one side of the field to the other rather quickly.

In a match we stayed in high gear the whole time except crossing the bump and pushing. Our driver absolutely loved having the high gear and we would not hesitate to gear this high again. Lol, sure Chris to go?


Ether,

I added more info to the pic:

-6 Inch Wheel
-Initial: 12:50
-Shfiter: 28:48 & 16:60

-RC

21-09-2010 09:57

topgun

Re: pic: 2 Speed Rev 2

How do you do the shifting? Pneumatics, servo motor, or some other means? Did you cut the gears or use off the shelf gears?

Looks nice.

- T

21-09-2010 10:59

R.C.

Re: pic: 2 Speed Rev 2

The shifting is done with pneumatics and all the gears used in this render/model are bought off the shelf.

-RC

21-09-2010 15:16

topgun

Re: pic: 2 Speed Rev 2

Can you show some alternate views of the gearbox?

24-09-2010 01:25

steelerborn

Re: pic: 2 Speed Rev 2

Dude looks sick!

I am learning SolidWorks at school now, Its a really nice program.

25-09-2010 00:36

sanddrag

Re: pic: 2 Speed Rev 2

Can you get rid of any of the standoffs in there to simplify it a bit, and reduce the parts count?

25-09-2010 15:30

mplanchard

Re: pic: 2 Speed Rev 2

Hi RC

Thank you for sharing. You have been busy. If you did this with SolidWorks Photoview 360 you really should put this image up on www.solidworksgallery.com. Very nice work. Marie

25-09-2010 16:20

Chris is me

Re: pic: 2 Speed Rev 2

One more question: Why two 1/4 plates and not 1/8 plates with bearing shims? I haven't made many gearboxes or anything, so I'm trying to look into the advantages of one over the other.

28-09-2010 19:36

J93Wagner

Re: pic: 2 Speed Rev 2

@Chris - If I had to take a guess as to why there are no flanges, I would say it has something to do with DFMA as not every team has easy access to bending parts accurately (we certainly don't), or ease of access and assembly.

Also, what exactly is the plate thickness? I need to know for a project I'm working on. Nice gearbox btw.

29-09-2010 02:15

R.C.

Re: pic: 2 Speed Rev 2

David,

This gearbox was made for our 2010 robot. The only reason for the extra four standoffs are just so the gearbox stays together at all times. The other four standoffs are just purely for mounting.

If I was going to do this again, It would not have as many spacers.

Marie,

It was indeed rendered with Photoview 360, I'll definitely put it up when I get a chance.

Chris,

The reasons why I use 1/4" Plate over 1/8" Plate

-Stiffer
-Can be tap'd
-Thickness for bearing
-Allows for counterbores

This is 1/4" Plate.

Thanks,

-RC

01-10-2010 09:41

Mike Marandola

Re: pic: 2 Speed Rev 2

sick model dude!!

08-10-2010 12:38

Snalios

Re: pic: 2 Speed Rev 2

I like this.