22-02-2005 22:14

Josh Hambright

Re: pic: 696 -Presenting the HexaMax R2 pic#2

my my my, that sure is a pretty transmission. Very very nice.

Hope to see it in action at some point.

22-02-2005 23:01

mizscience

Re: pic: 696 -Presenting the HexaMax R2 pic#2

very nice

23-02-2005 01:37

Jeff K.

Re: pic: 696 -Presenting the HexaMax R2 pic#2

That gearbox is possibly the nicest gearbox I have ever seen. I didn't get much of a look at it during the Chatsworth Scrimmage. I really wanna get a closer look at it during LA Regionals. But man that is awesome. How much does it weigh all together?

23-02-2005 02:20

sanddrag

Re: pic: 696 -Presenting the HexaMax R2 pic#2

Thanks! I have to be fair in that if you think this is the nicest, you haven't seen 968's. But yes, I am quite pleased with ours. Anyhow, with the three motors it tips the scales at approximately 13lbs per gearbox not including the pneumatic cylinder. Yes it is a large beast but I think (hope) we will have a very hard time breaking it.

23-02-2005 02:45

Nikhil Bajaj

Re: pic: 696 -Presenting the HexaMax R2 pic#2

I heart your gearbox, it is absolutely breathtaking. Ours weighed in at 11 lbs...we focused on making it compact. But man...a shifting 3 motor? How fast can you guys go, like 20 feet per second?

23-02-2005 02:50

Jeff K.

Re: pic: 696 -Presenting the HexaMax R2 pic#2

Indeed that appears to be one heck of a beast, yet it still is lighter than the Kit Gear Box...I believe...But man that is sweet. But was 968 at Chatsworth?

24-02-2005 19:38

sanddrag

Re: pic: 696 -Presenting the HexaMax R2 pic#2

Thanks for all the complements. One reason it is so heavy is that there is no external sprocket and chain (or other means of) reduction. It is all done in the box. The output shaft of this gearbox directly drives a 5.5" wheel by means of flex coupling. It is geared to run at 15.4 fps and 5.8 fps no load, so we are probably looking at something like 14 fps and 5 fps in reality. What a beast!

27-02-2005 21:54

Jeremy

Re: pic: 696 -Presenting the HexaMax R2 pic#2

yes we "968" where their at Chatsworth but we didn't get that many rounds in and we had a few problems to work out but we will be ready for LA

03-03-2005 15:18

Andy Brockway

Re: pic: 696 -Presenting the HexaMax R2 pic#2

Well Done!

Lots of good ideas, bent sheet metal brackets, cluster motors and the elimination of sprockets and chains. Not to mention dual speed. Time to turn the tables, I cannot wait to see your white paper!

03-03-2005 15:48

sanddrag

Re: pic: 696 -Presenting the HexaMax R2 pic#2

Thanks for the comments Andy. The sheet metal brackets are aluminum just like the plates. The one on the left came out a little off so that's why it is spaced out with washers. We would have machined mounts but we had enough machine work to do already.

Also, this thing is really big and heavy. Next year we will go smaller and lighter.

As for the whitepaper, expect it mid-late summer.

28-06-2005 00:24

sanddrag

Re: pic: 696 -Presenting the HexaMax R2 pic#2

I know I said I'd do a whitepaper, but first let me ask. Is anyone even interested? This thing isn't really all that different from an AndyMark transmission or something like that.

I'd be glad to write a paper if it will be of use, but I don't want to spend the time if it won't be of use to anyone.

So, do you want a paper or are the pictures good enough for you? Again, I don't mind writing one, I just want to make sure some people want me to first.

28-06-2005 01:27

Josh Hambright

Re: pic: 696 -Presenting the HexaMax R2 pic#2

I'd say go ahead and write it. Nobody has ever complained that someone was to willing to share their knowledge of building robots or their new ideas for anything. I could see another whitepaper as possibly being helpful to rookies or people getting into building their own transmissions.

28-06-2005 15:38

Conor Ryan

Re: pic: 696 -Presenting the HexaMax R2 pic#2

I'll read the white paper. And the hopefully reference it whenever I get to that stage. Plus you seem to reference it enough that it would be handy to have. And whoever said too much information was a bad thing?

28-06-2005 16:05

mechanicalbrain

Re: pic: 696 -Presenting the HexaMax R2 pic#2

ive seen alot of work put on drive trains i wish i could see such inovation in electrical systems from what i saw this year i was sadly disapointed

01-07-2005 00:01

sanddrag

Re: pic: 696 -Presenting the HexaMax R2 pic#2

I'm bored so I'm starting on the whitepaper. I hope to get almost done with the writing part of it tonight. Then I'll have to make all the drawings which will take a while.

EDIT: I got a good amount of writing done, but I am writing a lot actualy and I got tired of doing it tonight. So, I won't finish the writing tonight. There is still a lot more to go. I'd say expect the paper in a month or so. Maybe sooner, I don't know.