22-01-2009 20:42

s_forbes

Re: pic: What are we up to? FRC1771

Wow, that one pretty much blows ours out of the water.

Looks pretty solid. Actually, it looks really really solid. Any hints as to what kind of cool mechanisms will be going on top of it?

22-01-2009 20:42

cloud_254

Re: pic: What are we up to? FRC1771

ur design looks pretty similar to the design we r going with

22-01-2009 20:44

nahstobor

Re: pic: What are we up to? FRC1771

Looks like a 3D puzzle. Looks good and very strong, good job 1771. You guys always seem to have something that is unique and effective every year.

22-01-2009 21:07

sdcantrell56

Re: pic: What are we up to? FRC1771

Thanks everyone. I kinda left off the specs so here goes:
-6wd with a dropped center wheel and the center wheel is directly driven off of highly modified tough boxes
-The frame was designed so that everything was aligned by tabs for easy assembly and boat building epoxy was used
-This frame is much stiffer than our custom 1/4" thick aluminum frame last year for an approximately 10lb weight savings.

As for whats going on top, it is eerily similar to what you guys have already posted up with a few differences. Mainly we will be able to shoot downwards at a 40 degree angle without reducing the speed of our shooter. Hopefully everything comes together

O and this is bot #2...the real thing will be even nicer

22-01-2009 21:28

Ian Curtis

Re: pic: What are we up to? FRC1771

That is very nice! I really like how it's self tabbing. Got a team full of model airplane builders or welding guys?

22-01-2009 21:57

sdcantrell56

Re: pic: What are we up to? FRC1771

Haha it would seem like that wouldn't it. No actually I came up with the idea and I have been refining it this past offseason, but I never thought we would actually build a wood frame since it is kinda unconventional. However, the team really embraced the idea and I think it will pay off big time.

22-01-2009 22:04

smurfgirl

Re: pic: What are we up to? FRC1771

I'm digging the spots all over it.
I like the wood frame, and I can't believe it's only 18 lbs with axles! Actually, maybe I can believe it, but I'm in disbelief because our robots are always overweight, and it starts all the way from down there. Looks like you're going to have another great season.

22-01-2009 22:29

Akash Rastogi

Re: pic: What are we up to? FRC1771

Sean......you are a beast. Very nice work. I look forward to seeing you guys in Atl.

22-01-2009 22:44

MrForbes

Re: pic: What are we up to? FRC1771

The weight is just like ours, the construction is fantastic! Nice job...can't wait to see it moving balls around

22-01-2009 23:53

EricH

Re: pic: What are we up to? FRC1771

What's the glue you're using? Those spots remind me too much of cyanoacrylite (CA)... Then again, I've been helping build an R/C airplane.

23-01-2009 00:04

sdcantrell56

Re: pic: What are we up to? FRC1771

We are using MAS brand epoxy. It is a very strong slow cure epoxy used in boat building. One of our students got a bit carried away with the epoxy on the top. i kinda think it looks cool though. Other than the smell, this epoxy is incredible.

23-01-2009 01:28

RyanN

Re: pic: What are we up to? FRC1771

That's the coolest wooden chassis I've ever seen. Looks really solid. Good job!

23-01-2009 01:42

danshaffer

Re: pic: What are we up to? FRC1771

but the question is, will it float?

23-01-2009 01:47

sdcantrell56

Re: pic: What are we up to? FRC1771

It would definitely float. We have built it very similarly to the way you would build a wooden boat. We use no screws or nails and only the epoxy to hold it together.

23-01-2009 01:51

danshaffer

Re: pic: What are we up to? FRC1771

I'm still waiting for the game where the GDC clarifies that the regolith is covered with 6" of water around week 4.

23-01-2009 01:53

sdcantrell56

Re: pic: What are we up to? FRC1771

We would be one of the few teams that would be ok. We will just keep on floating. I must say wood is the real deal for frame material

23-01-2009 02:08

R.C.

Re: pic: What are we up to? FRC1771

Sean you are the man and I wasn't expecting this from you and I like it. Super Cool and see you at nationals.

23-01-2009 08:07

Peter Matteson

Re: pic: What are we up to? FRC1771

That is a thing of beauty.

As a wood worker I was wondering how you made those cuts until I read the caption. A laser almost seems like cheating, but thats just myjealousy of not having one .

23-01-2009 09:12

sdcantrell56

Re: pic: What are we up to? FRC1771

Believe me...sometimes having the laser I feel like we are cheating too. We were the first people to try lasercutting okoume so it was a bit of a mystery as to how it would work. Luckily it came out beautifully and everything fits together like a puzzle. I really don't see much reason for a wood frame after building this one. It is stronger in every way except for gouging resistance but thats not an issue with bumpers.

23-01-2009 11:40

zachjo

Re: pic: What are we up to? FRC1771

what thickness is that oakume and was it hard to find, I built a kayak and it was pretty hard to find a supplier.

23-01-2009 11:46

sdcantrell56

Re: pic: What are we up to? FRC1771

It is 12mm okoume. It was a royal pain to find a supplier. There is only one place in all of Georgia that carries it and they generally don't have much stock of it so it normally is an ordered in item. They also have meranti plywood but we chose the okoume for the weight savings.

23-01-2009 11:47

jgannon

Re: pic: What are we up to? FRC1771

This is the second time I've looked at this picture, and I'm still trying to figure out how you service the drivetrain. Do you have to tip the whole robot up on end and work from underneath?

23-01-2009 11:49

sdcantrell56

Re: pic: What are we up to? FRC1771

Yup to work on the drivetrain we will flip the bot. The bottom is completely open. We really dont have anything to service though. The chains are tensioned from the sides. The plan is to basically never touch it. If we do need to though it will be super simple. The center wheels are directly driven which cuts down on maintenance pretty substantially.

23-01-2009 12:21

Jared Russell

Re: pic: What are we up to? FRC1771

No, the question is, will it blend?

23-01-2009 13:29

martin417

Re: pic: What are we up to? FRC1771

"Bot smoke! don't breathe this!"