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Phoenix 703 "almost done"

By: MattB703
New: 14-02-2005 22:16
Updated: 14-02-2005 22:16
Views: 1857 times


Phoenix 703 "almost done"

1 week to ship and we might even get to practice this year.

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14-02-2005 23:16

Jeff K.


Unread Re: pic: Phoenix 703 "almost done"

Nice robot. Sweet drivetrain, tank style. Just wondering, how much does it all come out to and how well does it turn?



14-02-2005 23:41

roboguy #1


Unread Re: pic: Phoenix 703 "almost done"

dig the treads sweet.



15-02-2005 12:39

MattB703


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by Stonefan5271138
Nice robot. Sweet drivetrain, tank style. Just wondering, how much does it all come out to and how well does it turn?
Currently we are at 94lbs. We plan to take a couple more pounds out of the lift assembly. This will be my first time in 6 years of FIRST robots that I have worked on a robot that needed to add ballast!



15-02-2005 12:53

Cory


Unread Re: pic: Phoenix 703 "almost done"

Looks great guys.

One suggestion, and since you want to add weight, it's even easier. I'd add another bar across the middle of the bot, like the one towards the front, just so you dont have another robot grabbing inside your bot at your electronics, or a tetra falling on them, etc. It'd help move some more weight to the back, add balast, and protect electronics



15-02-2005 13:45

Andy A.


Unread Re: pic: Phoenix 703 "almost done"

If you got weight to kill, consider adding some bumpers. They can make a huge difference to the longevity of your bot (and others!).

More cushion for the pushin!

-Andy



15-02-2005 20:43

Conor Ryan


Unread Re: pic: Phoenix 703 "almost done"

looks pretty strong, a solid robot. Why did you go with treads? Just curious.



15-02-2005 21:02

Jeff K.


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by MattB703
Currently we are at 94lbs. We plan to take a couple more pounds out of the lift assembly. This will be my first time in 6 years of FIRST robots that I have worked on a robot that needed to add ballast!

Ya cool...but one question...just how well does it turn??? I've seen other robots with threads and when they turned, they went to near stall because they worked too well at getting traction.



15-02-2005 21:23

Kyle Love


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by Cory
Looks great guys.

One suggestion, and since you want to add weight, it's even easier. I'd add another bar across the middle of the bot, like the one towards the front, just so you dont have another robot grabbing inside your bot at your electronics, or a tetra falling on them, etc. It'd help move some more weight to the back, add balast, and protect electronics
This may be pointing out the obvious, but if you put on a second bar make sure not to cover up the battery area...maybe put one on the back and in front of the battery... Lexan never hurts either



15-02-2005 22:48

MattB703


Unread Re: pic: Phoenix 703 "almost done"

We will be gaurding everything with Lexan sheet.

We have been using the same treads for several years. They work great for us. We don't have any problem turning.



16-02-2005 09:47

Denman


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by Andy A.
If you got weight to kill, consider adding some bumpers. They can make a huge difference to the longevity of your bot (and others!).

More cushion for the pushin!

-Andy
and more GP
not that GP to smash other robots up to be honest... and if you get a reputation for doing it, the judges will watch you carefully, and you might get penalised if you are too agressive.



16-02-2005 10:23

Shu Song


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by Stonefan5271138
Ya cool...but one question...just how well does it turn??? I've seen other robots with threads and when they turned, they went to near stall because they worked too well at getting traction.
With a good enough gear box, turning with treads is a piece of cake. Our bot had tank treads last year and we turned seamlessly. But this year, using the KOP tranny and having tank treads, turning is a pain(both to watch and to listen to). We have another tranny in making but it is unclear as to if it will be finished in time.



16-02-2005 12:07

MattB703


Unread Re: pic: Phoenix 703 "almost done"

The KOP gearbox is geared much higher (faster) than we normally use. Try gearing down your final stage. You may gain a lot of control with little or no decrease in actual speed.



16-02-2005 14:34

sanddrag


Unread Re: pic: Phoenix 703 "almost done"

Quote:
Originally Posted by MattB703
Try gearing down your final stage. You may gain a lot of control with little or no decrease in actual speed.
And just to add/clarify why this might work is the theory that a motor that is geared "high" is currently getting "bogged down", will probably run about the same speed as a motor that is geared "low" because the "low" geared motor will not get (as) "bogged down"



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