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Unread 12-08-2011, 19:25
Jedward45 Jedward45 is offline
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Re: pic: 2011 "Nova" Swerve Drive (Front)

Quote:
Originally Posted by Aren_Hill View Post
From looking at it, you have a fairly robust looking module with most of the issues attended too, aside from that bevel gear looking tiny.
What i'd be concerned with in this module is the amount of power necessary to steer those wheels (depends on the number of modules and what motors are steering).

Also depending on your steering arrangement some method of angle adjustment between the steering sprocket and the module may be necessary.

Do you have the machining capabilities to make that one piece bracket and securely mount it to the vertical support?

It also looks rather huge, but i like small compact packages if you look at our recent swerves.

Chris's statement has some merit, and I've learned to like when people are straight up blunt with me, as it makes things much easier to gauge and get a realistic evaluation of your current state.

I would suggest listening to his advice and getting a firm grasp on gear ratios and the efficiency of various methods of power transmission, this will only help your design. Exercises like this are a chance to develop further, and as has been pointed out you could use some work in the gearing arena.

Don't immediately think someone is attacking you when in reality they're just trying to bump you back to the path you've strayed from. He gains nothing from tearing you down.
Thanks for the advice. As far as my previous comment is concerned, I understand the need for blunt criticism. I understand that Chris was trying to explain I need to better understand gear ratios, and I agree with him. However, I'm slightly taken back that anyone in FIRST would discourage someone from trying something new, especially when those new and difficult things are a source of the knowledge so vital to their own creation. Moreover, the criticism wasn't followed by an attempt to teach me the skills I need, or even show me where I could find the materials to teach myself.

As far as the module is concerned:
-The module is designed to be tied (via 25 chain) to the other three modules. (All I know is a banebots motor was used to rotate, but I wasn't in charge of that system, so I don't know how much power was needed. We also used 1" wide wheels, and rotating wasn't a problem)
-following some earlier advice, I'm working on interfacing a more robust and larger set of bevel gears.
-We do have access to the machining necessary to create the lower chassis.
-The size may be deceiving, but the wheels are only 3" in Diameter and 1/2" wide. I don't know if that still constitutes a "large" design, but if it does, I'd sure like to see Winnovation's swerve design

Thanks!

Last edited by Jedward45 : 12-08-2011 at 19:33.
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