Chief Delphi - AndyMark Stackerbox

Page 2 of 3

Show 100 post(s) from this thread on one page

Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Rumor Mill (http://www.chiefdelphi.com/forums/forumdisplay.php?f=15)

- - AndyMark Stackerbox (http://www.chiefdelphi.com/forums/showthread.php?t=60070)

Andy Baker

12-12-2007 23:28

Re: AndyMark Stackerbox

Quote:

Originally Posted by s_forbes (Post 658359)

Since the input gear is the same as the one on the AM singlespeeds, it should be pretty easy to convert one to accept a small CIM. Maybe you could manufacture a simple conversion plate for this...

Hmm...

This is another good idea. I will look into it.

AB

MrForbes

12-12-2007 23:31

Re: AndyMark Stackerbox

Don't encourage him, he's supposed to be studying for finals! :)

AndyB

12-12-2007 23:48

Re: AndyMark Stackerbox

I'm stunned. What a brilliant idea. No to tell you the truth, I was just looking for models for the AM Single Speed and ran across it. Screw getting my new year's kiss, I'm gonna wait on AndyMark. :D

I like the idea of the stacking planetaries though as well... maybe Andy has plans for that down the road as well. ;)

MrForbes

12-12-2007 23:54

Re: AndyMark Stackerbox

Quote:

Originally Posted by Andy Baker (Post 658319)

The cool thing is... and here's where it gets its name... you can stack 2-3-4-5 of these things back to back and keep multiplying a 3.57:1 ratio to your output shaft.

how many of them can you stack up and not break stuff? 3.57 to the 5th power is a big number....multiply that by the torque you can get out of a typical motor .....think final stage BB failure....

CraigHickman

12-12-2007 23:54

Re: AndyMark Stackerbox

Dude. This is awesome! I have a feeling you'll start seeing AM parts on 114 sometime soon... The quality has been going up and up, and I'm really quite impressed with the stuff you guys are rolling out.

A gearbox that is stackable makes a great arm setup. Sweet!

Richard McClellan

13-12-2007 04:22

Re: AndyMark Stackerbox

Quote:

Originally Posted by squirrel (Post 658375)

how many of them can you stack up and not break stuff? 3.57 to the 5th power is a big number....multiply that by the torque you can get out of a typical motor .....think final stage BB failure....

Ooh....yeah, that's definitely something to thing about....hopefully there will be some posted "recommended" limitations depending on the torque of your motor. Since they are supposedly infinitely stackable, no matter how hard those gears are hardened, there will always be a breaking point.

Andy Baker

13-12-2007 08:32

Re: AndyMark Stackerbox

Quote:

Originally Posted by squirrel (Post 658375)

how many of them can you stack up and not break stuff? 3.57 to the 5th power is a big number....multiply that by the torque you can get out of a typical motor .....think final stage BB failure....

Once we get some made (before Christmas, if all goes well), I will stack 2, 3, 4 or even 5 together to see what breaks. My initial guess will be the 3/32" machine key will shear. Hopefully, that is what will happen.

Andy B.

MrForbes

13-12-2007 10:12

Re: AndyMark Stackerbox

The only reason I brought it up is that I have seen some "interesting" use of compound gear reduction by a team that didn't seem to understand the problem of too much torque on too small of a shaft. As richardmcc2 noted, publishing a maximum torque spec would be helpful, because the ability to make a 530:1 transmission is really tempting for driving a heavy arm.

AdamHeard

13-12-2007 13:30

Re: AndyMark Stackerbox

Quote:

Originally Posted by squirrel (Post 658442)

Well, most arms I have seen have some sort of sprocket reduction as the final stage. So only 3-4 would be necessary to get that kind of ratio for an arm. Also, I hope that 5 together would be kind of awkwardly big as an extra reminder to rookies that maybe it's not a good idea....

Andy Baker

13-12-2007 16:21

Re: AndyMark Stackerbox

Stackerbox is now up on the AndyMark site.

An assembly print will be uploaded fairly soon. CAD is already available to download (.stp file).

Thanks for all of the comments.

Enjoy!

Andy B.

MrForbes

13-12-2007 16:23

Re: AndyMark Stackerbox

That's neat! and I see you implemented Steve's CIM idea....

thefro526

13-12-2007 17:07

Re: AndyMark Stackerbox

I love AM, they seem to always put a smile on my face. I was just thinking about gearboxes the other day in school. My team always likes to use chains for our mechanisms but they always seem to fail (usually because if missing pins lol) and this looks like a great alternative. I'm assuming that these will go through some preliminary testing when the first batch is shipped so there's not another BB like issue. Also when their stacked does one bolt right into the other flush or is there a little space and also is there a need to regrease the gears after they have been grease the first time?

chris31

13-12-2007 17:13

Re: AndyMark Stackerbox

Do you know the weight of one of these?

Cory	13-12-2007 17:17

Re: AndyMark Stackerbox

Quote:

Originally Posted by chris31 (Post 658579)

Do you know the weight of one of these?

Andy said around 1.5 lbs, on the first page of the thread

AndyB

13-12-2007 17:20

Re: AndyMark Stackerbox

Quote:

Originally Posted by Andy Baker (Post 658564)

Stackerbox is now up on the AndyMark site.

An assembly print will be uploaded fairly soon. CAD is already available to download (.stp file).

Thanks for all of the comments.

Enjoy!

Andy B.

Looks very nice. Where is the link to the .stp file? I'm not seeing it.

All times are GMT -5. The time now is 08:58.

Page 2 of 3

Show 100 post(s) from this thread on one page