pic: 1511 Drivetrain & Orbit Balls
 

Re: pic: 1511 Drivetrain & Orbit Balls
 

Are you supporting the end of the shafts on those P-80's? If so did you get the long shaft? We could only find the regular length.

Re: pic: 1511 Drivetrain & Orbit Balls
 

whats the point of powdercoating the kit frame?

although the cool-factor alomost outweighs the time delay....


nice work:cool:

Re: pic: 1511 Drivetrain & Orbit Balls
 

Close inspection of the photo indicates that this is not the C-Base from the kit. I'd be interested in knowing more about it, though! :)

Re: pic: 1511 Drivetrain & Orbit Balls
 

I noticed the end caps, but what is the rest made out of:confused:

could it be an old IFI frame?

Re: pic: 1511 Drivetrain & Orbit Balls
 

Appears to be the 2005-2007 IFI kit bot.

Re: pic: 1511 Drivetrain & Orbit Balls
 

I see those AM corner extrusions at the back of the bot. I think its the C-Base with different bracing at the front.

Re: pic: 1511 Drivetrain & Orbit Balls
 

Gosh darn, somebody went and bolted on some ugly bumper mounts after you got your powercoating done. :eek:

Looks like class!

Re: pic: 1511 Drivetrain & Orbit Balls
 

That looks awesome. The frame goes nicely with the camo balls.

Re: pic: 1511 Drivetrain & Orbit Balls
 

10 inch wheel base? .... wow. Looking forward to seeing how maneuverable you are at FLR.

Re: pic: 1511 Drivetrain & Orbit Balls
 

Yeah looks like a nice set up. Did you change the gear ratios at all?

or just standard? looks like itll do the job though

Re: pic: 1511 Drivetrain & Orbit Balls
 

Looks nice. However, only two cims for this years game.

Re: pic: 1511 Drivetrain & Orbit Balls
 

What rule is this? The kit only came with two cims, but up to four can be used. One just has to purchase the other two.

Re: pic: 1511 Drivetrain & Orbit Balls
 

I like it.

I've got a question, and it's about bumpers - so you can all groan now if you want.

How can you leagally protect the rear corners of this frame with BUMPERS that satisfy all of the rules?

As far as I understand (and no, I don't have my BUMPER RULE DEGREE from FIRST yet), you can't have the bumper extend past the end of the back rail, but you need to protect the corner on both sides. The side bumper can't extend past the end of the side rail, so that leaves a 1.125 inch length that is not protected. (Having a pool noodle extend past the edge of the plywood doesn't count.)

I think this problem was brought up somewhere before.

Any answers?

-Mr. Van
Robodox

Re: pic: 1511 Drivetrain & Orbit Balls
 

Yeap your right. To many hours this weekend

Re: pic: 1511 Drivetrain & Orbit Balls
 

Sorry didnt get back to this thread until now :)

Yes it is the C channel from the Kit bot, but nearly all the bracing is custom bracketry. We wanted a smaller channel for the wheels than the little joint pieces allowed, so we came up with our own. We also decided that we wanted the wheels as close together as we could get them without compromising our CG.

We are using the 12:1 banebots transmissions and encoders as we have had a lot of success with them in the past, and the programmers like and know how to use the encoders. We also could not get the long shaft transmissions in time, so we actually went with the Regular shaft, and our mechanical engineers helped with the calculation and design to build a bearing block into the C Channel that supports enough of the weight that we dont need to support on the other side of the wheel (trust me, I didnt believe that you could canteliever it and be successful, but we drove it around all weekend fully weighted and its working beautifully). I think part of it has to do that there isnt a lot of torque on these transmissions, and they explained a whole bunch of other math that I forget now :)

Even with the 4 motors, we were able to get this thing down to 41lbs including the bumper mounts, and that was a big step for us!! (Last year it was close to 60).

As for bumpers, I dont think I have a drawing, but the back corners we are allowing the pool noodles from the back brace to extend 3.5", and I think the ones from the side brace extend out 2.14". This was the best that we could come up with with the rules, and after 5 of us talked about it for nearly 2 hours, I believe this is a completely legal configuration.
I will post a photo/image if I can soon.

Re: pic: 1511 Drivetrain & Orbit Balls
 

The GDC has said in this Q&A that you can't have the backing (the part that defines the bumper) longer than the robot's maximum horizontal dimension, but to satisfy the requirements, you can have the soft portion extend beyond the backing.

Re: pic: 1511 Drivetrain & Orbit Balls
 

I love the simplicity.

Re: pic: 1511 Drivetrain & Orbit Balls
 

Wait till you see the rest of it :P

Re: pic: 1511 Drivetrain & Orbit Balls
 

I have a feeling this is gonna be a very light robot. lawl. :rolleyes:

Re: pic: 1511 Drivetrain & Orbit Balls
 

Yup, last number I heard from our mechanical team was that we were at 90lbs. Now I dont know if that was factoring in the electronics, but that still seems pretty good to me for our initial estimate. Right now our CG is far enough back, but we still might put extra weight on the back corners to make sure that we arent front heavy at all. Nearly all our parts are sent into the shop, so hopefully we are in good shape :)

Re: pic: 1511 Drivetrain & Orbit Balls
 

And its getting to be an obsession with Kim, she has the drivetrain in a full regiment of push-ups, sit-ups, and jumping jacks to make sure it is all muscle and no fat! :]