|
|
|
 Every single team in FRC has had a rookie season. All those... have stories. Some are sad, some are funny, some are inspiring - but all the teams have stories to be told... Each year is a chapter in the team's history book with stories to be told and shared. - JaneYoung [more] |
 |
|
|||||||
|
||||||||
 |
| Thread Tools | Rate Thread | Display Modes |
|
#1
|
||||
|
||||
|
pic: Building blocks of a 1 lb shifting transmission
|
|
#2
15-02-2011, 16:21
|
|||||
|
|||||
|
Re: pic: Building blocks of a 1 lb shifting transmission
I don't believe it. Not by the time the sprockets, bolts, spacers, etc... are all added in.
Although, I'm hopeful to see the final result! 
|
|
#4
15-02-2011, 16:48
|
|||
|
|||
|
Re: pic: Building blocks of a 1 lb shifting transmission
Im confused, how is that even possible. The big gear is huge and 4 of those gears alone weigh a lb?
Am I wrong and why are they different colors? Aren't these just gears from AM?
|
|
#5
15-02-2011, 16:51
|
|||||
|
|||||
|
Re: pic: Building blocks of a 1 lb shifting transmission
You would have had to essentially remove a quarter of a pound, or a bit more, from the 2007 transmission 254/968 used to get to 1lb even. I don't see that as physically possible.
Did you hob your gears? Cut them with a form cutter? What alloy? Have you decided it wasn't worth the work yet? (Don't mean to be snarky-just that you can find numerous comments from 968/254 members that it absolutely was not worth the amount of effort it took to save 2 lbs).
|
|
#6
15-02-2011, 17:42
|
|||||
|
|||||
|
Re: pic: Building blocks of a 1 lb shifting transmission
For reference our 3d printed ABS plastic ball lock transmission (as shown here less CIM) is 26 ounces.
The only metal parts are two 1" bearings, three thrust bearings, air cylinder, a few bolts and a precision 1/4" shaft. http://www.chiefdelphi.com/media/photos/36161 It is possible to make a 1 pound transmission, but will it hold up?  Are you direct driving a wheel? What are you using to shift? Last edited by team222badbrad : 15-02-2011 at 17:46.
|
|
#7
15-02-2011, 17:50
|
||||
|
||||
|
Re: pic: Building blocks of a 1 lb shifting transmission
Ha wow leave it to CD to take everything literally. It will probably turn out closer to 1.5lbs per transmission. This was really just supposed to show off some cool gears that will save a decent amount of weight over their steel counterparts
They are 7068 aluminum hobbed and anodized. These should also hopefully be available for purchase by next season for anyone interested in saving a big chunk of weight and higher quality over andymark gears. Cory, had we been investing our time into making these versus just machining steel gears we would have gone the steel route as well but given the choice to do both without any extra resource allocation we went with the aluminum. The only downfall was the wait (no pun intended) but that was remedied by running steal gears in the interim Last edited by sdcantrell56 : 15-02-2011 at 17:53.
|
|
#9
18-02-2011, 22:20
|
|||
|
|||
|
Re: pic: Building blocks of a 1 lb shifting transmission
so have you weighed the finished trans yet? I would love to see the final weight!
|
|
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|
Re: pic: Building blocks of a 1 lb shifting transmission
Linear Mode
