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-   -   pic: 294 teaser (http://www.chiefdelphi.com/forums/showthread.php?t=73581)

Rick Wagner 04-02-2009 16:26

Re: pic: 294 teaser
 
It's the plywood backing that was used to cut the 3/8 thick aluminum turret plate (a sprocket) on the GKN water jet.

AdamHeard 04-02-2009 16:49

Re: pic: 294 teaser
 
Quote:

Originally Posted by Rick Wagner (Post 814156)
It's the plywood backing that was used to cut the 3/8 thick aluminum turret plate (a sprocket) on the GKN water jet.

The teeth look #25 pitch to me, wouldn't that make the aluminum plate 1/8"?

s_forbes 04-02-2009 16:52

Re: pic: 294 teaser
 
It looks more like a timing belt pulley (a really really big one!) than a chain sprocket, so 3/8" makes sense.

RyanS 04-02-2009 17:08

Re: pic: 294 teaser
 
#25 chain

1/8 aluminum plate sprocket

204 teeth

Rick Wagner 04-02-2009 22:27

Re: pic: 294 teaser
 
Quote:

Originally Posted by AdamHeard (Post 814176)
The teeth look #25 pitch to me, wouldn't that make the aluminum plate 1/8"?

Good catch Adam. You and Ryan are correct. 3/8 would be way too heavy!

sdcantrell56 04-02-2009 22:30

Re: pic: 294 teaser
 
You have us beat. We cut out a 180 tooth 25 series sprocket for our turret. Ours was done with a laser though.

Rick Wagner 04-02-2009 22:34

Re: pic: 294 teaser
 
Quote:

Originally Posted by sdcantrell56 (Post 814390)
You have us beat. We cut out a 180 tooth 25 series sprocket for our turret. Ours was done with a laser though.

The real test will be in the crater. See you in Atlanta!

sdcantrell56 04-02-2009 22:42

Re: pic: 294 teaser
 
Indeed. I hope we get to see you guys in Atlanta.

MrForbes 05-02-2009 00:36

Re: pic: 294 teaser
 
You have us beat too. We used a sawzall to cut the center hub and spokes out of a swamp cooler pulley

unclewaldo 05-02-2009 00:53

Re: pic: 294 teaser
 
Quote:

Originally Posted by akeisic (Post 814128)
False, True, True, False

We set a record at the GKN waterjet; the code to make the part was 3700 characters [ed: lines??] long and took nearly 2 hours to cut. The best part is that the part came out perfectly. No need to redesign or remachine here! :D

AND how to you plan to place the chamfer on the sprocket teeth?? I can think of some interesting solutions but am curious as to your plans...

.... or are you leaving them square and hoping for the best by keeping the chain tension "extra tight" since I assume this will lie in a horizontal plane....

akeisic 05-02-2009 01:04

Re: pic: 294 teaser
 
Quote:

Originally Posted by unclewaldo (Post 814474)
AND how to you plan to place the chamfer on the sprocket teeth?? I can think of some interesting solutions but am curious as to your plans...


GKN's largest lathe can handle 20" diameter parts, which is where we will be doing our work. If it really came down to it we could stick it up on our VTL we use for our 6ft diameter engine nozzles. :-)

Borisdamole 05-02-2009 13:08

Re: pic: 294 teaser
 
Quote:

Originally Posted by Rick Wagner (Post 814389)
Good catch Adam. You and Ryan are correct. 3/8 would be way too heavy!

Well, wouldn't be the first time 294 over engineered something.... lol

(i.e. last years "cheesing" of the upper A-frame)

:D :D :D

EricVicenti 05-02-2009 13:13

Re: pic: 294 teaser
 
Very nice. We cut a 183 tooth timing pulley for our turret on a laser cutter out of quarter and eighth acrylic. Works very well.

Rick Wagner 05-02-2009 17:06

Re: pic: 294 teaser
 
Quote:

Originally Posted by Borisdamole (Post 814730)
Well, wouldn't be the first time 294 over engineered something.... lol

(i.e. last years "cheesing" of the upper A-frame)

:D :D :D

We made our weight and it never broke! Good luck to the Greybots. See you in LA and Las Vegas.


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