Go to Post While there are reasons to keep a float charge on your batteries, it may be like giving your son a flu shot when he has the measles. - rtfgnow [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
 
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 01-01-2004, 18:48
Matt Adams's Avatar
Matt Adams Matt Adams is offline
b(o_o)d
FRC #1525 (Warbots)
Team Role: Engineer
 
Join Date: Dec 2003
Rookie Year: 2000
Location: Arlington Hts. IL
Posts: 375
Matt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond reputeMatt Adams has a reputation beyond repute
Send a message via AIM to Matt Adams
Re: Picking Out Roller Chain

Quote:
Originally Posted by Raul
Let's not just make declarations on this forum that one should never use #25 chain!

You can be extra safe or you can be competative - its your choice.
Rar! I love that firey "extra safe or competitive" statement. Haha.

First, I agree it's bad to declare to NEVER use #25 chain, it has a lot of good applications. (Fortunately, I don't really Raul was quoting me, since I merely adviced to not use it on the last leg of a drive train.)

Second, I'm really glad that Raul did "bite" and say something. You're on a team that's used #25 with great success for a while now.

Something to consider, though I may be incorrect, Wildstang has typically been using #25 on crab drive style systems, which has typically used short chain lengths interacting with only one wheel per length of chain.

In addition, 111 has been designing (very awesome) strategically fast and defensive robots, not the "fierce, head-on, pushing on the carpet with 2.5 coefficent of friction for 2 minutes" sort. 111 has designs that I would to consider to carry atypically smaller loads on chain. It is a much different situation than a tank drive style system which may have one continous length of chain for two wheels per side at 6 feet per loop. As has been said in similar threads, proper tensioning and load calculations are critical to use #25 chain, as well at continuous "stretch management".

Here's some reworded suggestions:
  • If you're coming on these forums because you're unsure about whether to use #25 or #35 chain, and unsure about doing calculations to determine the loads for your applications, I sincerely suggest you you don't give yourself unneccessary headache- it's a few pounds to sleep better at night, go #35.
  • If you've been around for a few years and are thinking of going down to #25 to save weight, use short lengths and do careful calculations on load.
  • If you've had #25 fail on you, work on improving your load handingly methods, or just realize that #35 can be your friend.
  • If you've been around for several years, you're probably not looking for advice, so contribute some like Raul did.
More cents...

Matt
__________________
Matt Adams - Engineer at Danaher Motion
Team 1525 - Warbots - Deerfield High School

Last edited by Matt Adams : 01-01-2004 at 18:53.
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
25 or 35 chain? Alan Ing Technical Discussion 24 02-03-2003 13:56
Nylon Roller Chain Sprockets Jim Smith Technical Discussion 6 20-01-2003 20:01
1/4" chain and links from small parts archiver 2001 2 24-06-2002 00:18
Roller Chain Adrian Wong Inventor 3 23-02-2002 17:21
Chain and chain breaker source? kmcclary Off-Season Events 4 22-10-2001 22:51


All times are GMT -5. The time now is 22:34.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi