10-02-2007 11:52

SteveGPage

Re: pic: Team 836 2-speed transmission

Here is our 2-speed transmission, using a pneumatic shifter.

10-02-2007 11:54

RoboDriver1718

Re: pic: Team 836 2-speed transmission

The transmission looks great. KUDOS

10-02-2007 12:13

Zero-Bee

Re: pic: Team 836 2-speed transmission

And it works too. :Q

10-02-2007 19:13

Arefin Bari

Re: pic: Team 836 2-speed transmission

Looks nice. I like how you guys are putting the motor inside the plate. Few questions...

1) What are the gear ratios on there?
2) Are you guys using only one small CIM per side?
3) Is there a way to adapt another small CIM or a big CIM into that tranny?
4) How heavy is that?
5) I can't really see the dog gear... but can you shift on fly?

Good luck at the competitions and if you guys are at any event that I am attending, I will make sure to stop by and check you guys out. =)

10-02-2007 20:27

swamp_child

Re: pic: Team 836 2-speed transmission

Uh-oh exploding ifi wheels. trust me, you should definitely change those!

10-02-2007 21:34

Karthik

Re: pic: Team 836 2-speed transmission

I'm not quite sure why you'd say that. Hundreds of teams used IFI wheels last year, and only a handful experienced problems. Even though the problems were few and far between, this off-season IFI looked at the problems and designed a new version of their wheels. The new version addressed all the complaints and issues brought up during the 2006 season. They even took the time to have these wheels beta-tested by an FRC team. Their new wheels are tested and proven. There were no "explosions" in these tests.

10-02-2007 23:03

swamp_child

Re: pic: Team 836 2-speed transmission

still, those wheels (ok the wheels last year) lost us 3 first place trophies.

11-02-2007 02:13

M4 Sherman

Re: pic: Team 836 2-speed transmission

Last year's wheels got us one first place trophy!

13-02-2007 19:57

tim-tim

Re: pic: Team 836 2-speed transmission

To answer a few of your questions:
1) High gear is 21.96 to 1
Low gear is 65.88 to 1 (both of these are to the wheel)
2) Yes, one 2.5 inch per side
3) Yes, but a small redesign would be required
4) A whole whooping 8.8 pounds per each side with motor and pneumatic shifter
5) Most definitely

We will be competing at the Trenton and Anapolis Regionals

13-02-2007 19:58

tim-tim

Re: pic: Team 836 2-speed transmission

We have not have a problem with the wheels, and used them last year as well.