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 As a famous saying goes, don't criticize someone till you have walked a mile in their shoes. - Steve W [more] |
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By: Tom Bottiglieri
New: 08-02-2005 08:41
Updated: 08-02-2005 08:41
Views: 957 times
Our base sparkles.
"That picture doesn't do it justice" - Daryl from 195
Discussion
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08-02-2005 13:46
tiffany34990
Re: pic: 195 Chassis
interesting ..
how heavy is it??? and how deep is it inside??
08-02-2005 14:44
Tom Bottiglieri
Re: pic: 195 Chassis
This chassis is made of 9 ply baltic birch plywood.
It was primed twice, painted, *sparkalized* (sorry im not sure on the term), and given a clear coat by a local auto body shop sponsor.
It weighs ~19 pounds, and is ~6 inches deep.
08-02-2005 14:48
JakeGallagher
Re: pic: 195 Chassis
Oooh...purdy. How strong is that plywood? Sorry, I'm not too up on plywood strength, I don't use it too much.
08-02-2005 15:01
Alex Cormier
Re: pic: 195 Chassis
thats one sweet bot! what are you doing tank tracks?
08-02-2005 15:02
Max Lobovsky
Re: pic: 195 Chassis
I don't know about birch, specifically, but good woods are generally stiffer and stronger per weight than aluminum. The problem is that its hard to get efficient shapes out of wood, so it loses its strength advantage. If it was possible to make thin wall tubing out of wood, there would be a whole lot more high performance stuff made out of it.
08-02-2005 15:08
Tom Bottiglieri
Re: pic: 195 Chassis
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Originally Posted by Pit Bull 1126
thats one sweet bot! what are you doing tank tracks?
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Should look something like this http://www.team195.com/gallery/displ...?album=3&pos=9
Thats our programming practice bot ('03), by the way.
08-02-2005 16:11
Tom Bottiglieri
Re: pic: 195 Chassis
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Originally Posted by Pit Bull 1126
sweet, same design for the last few years?
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1) Plywood is much cheaper and easier to work with than aluminum. We can assemble the entire chassis in one day on readily available machines. We also like the plywood because we have tested it to be not only lighter, but stronger than its aluminum counter part.
2) Why reinvent the wheel? This design is proven, and we know we can depend on it to work again. Plus, every year we can tweak the design to bring it closer to perfection.
3) By knowing a general chassis and drive wheel design from the start, we have more time to focus on whatever armeture we want to put on.
08-02-2005 23:46
Jon K.
Re: pic: 195 Chassis
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Originally Posted by Tom Bottiglieri
We have been using this tank tread/wood chassis for a few years now, and it has never let us down. We opt to keep it for a few reasons.
1) Plywood is much cheaper and easier to work with than aluminum. We can assemble the entire chassis in one day on readily available machines. We also like the plywood because we have tested it to be not only lighter, but stronger than its aluminum counter part. 2) Why reinvent the wheel? This design is proven, and we know we can depend on it to work again. Plus, every year we can tweak the design to bring it closer to perfection. 3) By knowing a general chassis and drive wheel design from the start, we have more time to focus on whatever armeture we want to put on. |
LONG LIVE THE PLYWOOD BOTS. RAGE also has been using plywood for about the past 7 or so years. We also use Baltic birch, and we have only ever had it break once, in 2003, but luckily a little wood glue fixes that, instead of tearing apart the whole bot.
This is basically our philosophy as well, we usually keep the same red plywood base design from year to year, allowing us time to work on our arm and programming.
09-02-2005 00:39
Sscamatt
Re: pic: 195 Chassis
Our wood bot also cracked in 2003, all the pushing and shoving on the top of the ramp did it, Easily fixed though. 
09-02-2005 11:01
Andy A.
Re: pic: 195 Chassis
95 has used .5 Baltic plywood for several successful bots.
Not only does it have some great engineering properties, it looks down right classy!
-Andy A.
09-02-2005 11:16
Rocketboy
Re: pic: 195 Chassis
WOW! I had no idea that plywood was so feasible when used correctly. I generally assumed that wood would splinter into shards when slamming into a robot with an 80/20 extrusion frame. I guess if it's worked before it should work again.
Plus it looks darn spiffy. GJ guys! 
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