Show Your Junk: 2012 Edition |
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rasmuet
Welding Master Joined: Apr/29/2013 Location: Ann Arbor, MI Status: Offline Points: 310 |
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Posted: Apr/14/2015 at 2:40pm |
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Most teams use either 6061-T6 or 7075-T6 aluminum for the transmission casing. Gear options are 8620, 4340, and others which are either case hardened or through hardened depending on the properties of the alloy. |
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Erik
Iowa State Baja 2011-Dec 2014 Drivetrain Design 2013, 2014, 2015 2014 Kansas - Car #45 - 1st Place Endurance |
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yash677
Double Secret Probation Joined: Mar/21/2015 Status: Offline Points: 2 |
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which material did you use for casing and gears?
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taukea
Welding Master Joined: Jun/12/2012 Location: United States Status: Offline Points: 118 |
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Iowa State Tech Director 2013-2014
Iowa State Project Director 2012-2013 |
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taukea
Welding Master Joined: Jun/12/2012 Location: United States Status: Offline Points: 118 |
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Iowa State Tech Director 2013-2014
Iowa State Project Director 2012-2013 |
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RKS2108
Bolt Sorter Joined: Mar/14/2010 Status: Offline Points: 14 |
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The 2013 gearbox will actually be about 0.7lbs heavier than
last year’s, but with some creativity the rotational inertia is much lower.
However, the new box allowed us to cut 8+lbs from the vehicle and move the CG
forward and down. Should be more efficient also. |
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MTUcvt
Bolt Sorter Joined: Nov/04/2012 Location: United States Status: Offline Points: 6 |
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Yeah we are, working on another version of it.
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Thanks
Nate Koetsier |
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Purduebaja
Welding Master Joined: Sep/19/2010 Status: Offline Points: 137 |
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Nice, I love the quote on the gearbox, we have been thinking about doing that as well. Manage to get the gearbox even lighter than last year and are you guys still running your awesome custom CVT?
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RKS2108
Bolt Sorter Joined: Mar/14/2010 Status: Offline Points: 14 |
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RKS2108
Bolt Sorter Joined: Mar/14/2010 Status: Offline Points: 14 |
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Part of the 2013 MTU drivetrain
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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Former Team Captain
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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see, not that low
Edited by Pedro UFPBaja - Aug/16/2012 at 7:00pm |
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Former Team Captain
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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2 cars only in 2011 (at Baja SAE Brazil)
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Former Team Captain
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EAD Motorsports
Welding Master Joined: May/26/2009 Status: Offline Points: 109 |
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I swear UFP brings 2 cars every year, haha.
I'd say EESC USP got lucky!
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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Measures and position of the pilot are the same as previous cars, the only difference and that is all bent. (actually is the same file since 2011 i guess)
EAD Well, to be at RIT the team must be top 3 at Baja SAE Brazil. Really hope they get it. lol Bented RHO-RRH is not exatcly a new solution, EESC USP already raced with a car like this at Brazil and midwest some years ago.
Edited by Pedro UFPBaja - Aug/16/2012 at 6:22pm |
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Former Team Captain
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EAD Motorsports
Welding Master Joined: May/26/2009 Status: Offline Points: 109 |
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Might want to ask baja rules about the RRH. I've never seen a firewall fabbed like yours. The upper LC isn't in-plane with the vertical RRH tubes. If you move the upper LC to be in-plane, then you probably don't have 6" of of vertical space between the LC and helmet. Not trying to badmouth the frame! Just trying to keep you from arriving at RIT, only to have the tech's make you re-do portions of the RRH.
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Soccerdan7
Organizer Joined: Sep/22/2010 Location: CA Status: Offline Points: 780 |
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I really can't see that passing the 6" head clearance rule based on those pictures with that person. unless some how they are seated a lot lower, then it might be close.
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Danny
Cornell (fall'07 - spring'12) Former Captain / MEng / that guy with all the carbon 10 races, 7 top ten's, 2 overall wins |
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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is the same size as the previous cars that meet the rules |
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Former Team Captain
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taukea
Welding Master Joined: Jun/12/2012 Location: United States Status: Offline Points: 118 |
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Your noggin is mighty close to that roll hoop!
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Iowa State Tech Director 2013-2014
Iowa State Project Director 2012-2013 |
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Pedro UFPBaja
Baja Godfather Joined: Mar/03/2010 Location: Brazil Status: Offline Points: 886 |
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Edited by Pedro UFPBaja - Aug/14/2012 at 1:20am |
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Former Team Captain
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collinskl1
Baja Godfather Joined: Jan/21/2009 Location: Saginaw, MI Status: Offline Points: 1056 |
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That's a seriously quality production! Great job with that!
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Kyle Collins
Lipscomb University Alumni 2x Project Manager Nexteer Automotive Product Engineer, Electronic Power Steering ... and the 8th simple machine: a bigger hammer. |
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kfilenda
Bolt Sorter Joined: Jul/02/2012 Location: United States Status: Offline Points: 4 |
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Here is a video from UW-Milwaukee that highlights the entire process of making our new chassis from design to competition. Enjoy. |
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cwelch
Bolt Sorter Joined: Jun/15/2010 Location: socorro NM Status: Offline Points: 16 |
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*disclamer- I am realllyyy hung and still "sociallized" from fourth of July festivities last night, so this may be long and dry" well, here is the story of New Mexico Techs 2012 car. I haven't had a chance to keep up to date with it as We didnt sleep more than 3 hours a night from when school ended until Wisconsin. Our team this year was a fairly small team of 12 people, and the fact that we were all friends and worked well together really helped the long days in the shop go by very quick, and that was very nice. the downfall we had this year was funding. We built this car without getting a dime from the school until June 1st, even though we put in our funding proposal at the end of the last fiscal year, so that was very discouraging for us. We all "invested" a lot of money into the car, and our faculty advisor took the cake by being out 5 grand It was a really fun year, which included a lot of booze in the baja shop the night before the fire marshal came to visit...yeah we got a write up... lol. Anyway on to the pictars... Here is the car in mid march. We tried our damnedest to have the car done by Valentines day in order to get a solid 3 months of testing done...but that didnt happen. It felt like the end was in sight from Febuary, but it dragged and dragged on until May, when we finally drove the car for the first time. The first time we "unveiled" the car was at our schools design conference on the 3rd floor of our student union. in order to get the car up the elevator we had to take off all of the suspension. this was a 2 hour affair due to the fact we had no tools on campus to tear her apart, and we were all wearing dress clothes lol Then came testing, we tested, broke, tested, built more stuff, tested. and repeated this from the end of school up until the Sunday before we left to go to Wisconsin. ( we left on Tuesday) but at competition we experienced some unforeseen carb problems in the endurance race, which really bummed us out and hindered our performance. Overall it was an Awesome Year! |
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-Cam Welch
-New Mexico Tech |
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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The Sweetness:
Something that isn't mentioned is the ability to weld umm how do I say this, "through space". As in, take a stack of 4 square tubes and its entirely possible to weld all of them together in a single pass. SWS said they made a 5 cylinder prototype engine by electron beam welding another cylinder onto a 4 cylinder. BTW, SWS has been one of the best companies I have worked with at work and for baja. Keep them in mind for your professional career.
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Tony Rivera
Welding Master Joined: Nov/17/2009 Location: Tempe Status: Offline Points: 196 |
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So... what is the answer?... |
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Tony Rivera
Arizona State University Team Captain 2009-2010 Local Motors Vehicle Systems Engineer |
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zglazer
Baja Godfather Joined: May/27/2012 Location: Metro Detroit Status: Offline Points: 593 |
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Edited by zglazer - Jun/24/2012 at 9:06pm |
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Zack Glazer
McGill Baja Racing Alumnus 2009-2013 http://baja.mcgilleus.ca/ 2012-2013 Drivetrain Designer |
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varun
Bolt Sorter Joined: Dec/30/2011 Location: india Status: Offline Points: 4 |
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hello guys, after seeing all these photos of gearboxes i couldnt help but notice that many teams dont use a diff, can someone please explain me the necessity of using a differential in a baja car....i mean what if there is there is no diff at all...since many teams do it... this year we are manufacturing our own gearbox and i am confused on having a build in differential or not...also if i m putting a differential will a open diff work or will i need to use a LSD...i m very confused please help guys...
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varun anadkat
K.J.Somaiya College Of Engineering |
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johnfar109
Organizer Joined: Jul/08/2009 Location: Rochester, NY Status: Offline Points: 143 |
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Yeah that is the one. They where going to make a second one with a bit more content but WXXI never got a chance to finish the project before funding Ran out. |
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- John Farnach
RIT BAJA SAE That Guy 04-09' RIT 2010 Maneuverability Captain & Track Prep and Construction RIT 2013, 2016, 2019 Electronic Scoring & Track Prep and Construction |
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p.lewis
Welding Master Joined: Oct/05/2009 Location: Greater Detroit Status: Offline Points: 296 |
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University of Rochester Alum
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VivaLaShay
Bolt Sorter Joined: Feb/23/2011 Location: Norfolk, VA Status: Offline Points: 28 |
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Care to share that?
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ODU Baja
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AndyRIT
Organizer Joined: Nov/11/2008 Location: Sheboygan, WI Status: Offline Points: 193 |
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We had local PBS station do a documentary back in 07? To help with sponsorship of the RIT race. We tried to get other teams involved but it never worked out. I don't think the video is online anywhere, I only have a DVD copy.
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RIT Baja SAE Alumni 04'-09'
RIT Baja Team Manager 06'-08' 2010 RIT Track builder 2011 CAT/IL Comp Team Leader 2012 Wis vol 2013 RIT Track Builder Diesel Calibration Engineer-Kohler Engines |
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Soccerdan7
Organizer Joined: Sep/22/2010 Location: CA Status: Offline Points: 780 |
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Yea,
Having multiple teams would be super difficult with all the buildup and such. I suppose the best thing would have been to interview you and the guys from RIT after the awards or something to get a few takes on it from the top finishers. It was for a nonfiction film class so it was very much tailored to that but still turned out as an awesome recruitment tool and something to remember this year by. I particularly like my ramblings in final design and the emergency driveshaft change during endurance.
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Danny
Cornell (fall'07 - spring'12) Former Captain / MEng / that guy with all the carbon 10 races, 7 top ten's, 2 overall wins |
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tp
Welding Master Joined: Mar/31/2009 Location: Corvallis, OR Status: Offline Points: 348 |
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Nice video! Although to tell you the truth, 85% of my focus was watching for our car.
My only comment, and it was the same thing with our formula team's "Relentless" video, is I would love to see a Baja or Formula documentary with a broad focus and showcased several teams. It's real hard get a perspective of the competition through the eyes of just one team. |
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-Tom
Oregon State BajaSAE Team Captain |
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Soccerdan7
Organizer Joined: Sep/22/2010 Location: CA Status: Offline Points: 780 |
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For those of you that saw the camera crew with our usual entourage at competition, that was my gf and her friend filming a documentary of our team for a school project. Here it is in all it's glory:
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Danny
Cornell (fall'07 - spring'12) Former Captain / MEng / that guy with all the carbon 10 races, 7 top ten's, 2 overall wins |
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frinesi2
Organizer Joined: Feb/23/2010 Status: Offline Points: 91 |
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JB Weld. Definitely JB Weld.
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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Nope, the parts would be awfully hot after that process. You can almost grab the part after its welded
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MTomasko2011
Milling Master Joined: Apr/24/2009 Location: Ohio Northern Status: Offline Points: 50 |
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I'm going to guess friction welded?
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Ohio Northern University
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Sauerkraut
Bolt Sorter Joined: Jan/17/2012 Location: ODU Status: Offline Points: 5 |
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Honda Rubicon
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sandres913
Welding Master Joined: Aug/17/2011 Status: Offline Points: 216 |
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BAH! That would explain it! @_@
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Shaun
Purdue University Calumet - PUC Motorsports 2010 - Washington #18 2011 - Peoria #30 2012 - Wisconsin #54 |
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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The weld is on the other side haha
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sandres913
Welding Master Joined: Aug/17/2011 Status: Offline Points: 216 |
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Fair enough! In either case, it looks like a very clean and precise weld, very cool!
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Shaun
Purdue University Calumet - PUC Motorsports 2010 - Washington #18 2011 - Peoria #30 2012 - Wisconsin #54 |
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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Think outside of what is available to you at the moment in the shop. There are a ton of different welding processes, each of them have their advantages and disadvantages. I'm not going to tell you what we used, I'll let you do your own research
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sandres913
Welding Master Joined: Aug/17/2011 Status: Offline Points: 216 |
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Just standard Honda? Only really seen Polaris and Arctic Cat
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Shaun
Purdue University Calumet - PUC Motorsports 2010 - Washington #18 2011 - Peoria #30 2012 - Wisconsin #54 |
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J.Cremer
Bolt Sorter Joined: Jun/09/2010 Location: Williamston, MI Status: Offline Points: 21 |
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[QUOTE=ErikHardy]No Keys, no snaprings, straight up welded carburized 8620....
Just wanted to add a correction, the weld was not on the carburized material. Thats a no-no.
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Kettering Baja
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VivaLaShay
Bolt Sorter Joined: Feb/23/2011 Location: Norfolk, VA Status: Offline Points: 28 |
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Thats a Honda diff |
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ODU Baja
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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No Keys, no snaprings, straight up welded carburized 8620. Unfortunately I think you have become victim to something that I think all us (myself included!) SAE students fall into at one point or another. We become so used to what is available to us in the shop that we start assuming, bad for engineering! In this case you are probably assuming they were tig welded, which is possible and would probably work but would cause a myriad of other problems. There is a welding process perfect for this application. I'll give you a hint, you can almost grab the part after being welded due to heat input...
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sandres913
Welding Master Joined: Aug/17/2011 Status: Offline Points: 216 |
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Well I meant the packaging, ours has a bit of space to it this year and last year...actually come to think of it most of ours have been aluminum boxes due to price of aluminum and little funding WELDED? As in no keys or snap rings, just plain welded to the shaft? Gears hardened at all? Our welder (graduated now) generally denounces welding things together like this...even though his welds are legendary among a few judges. EDIT: Guess that could sound like a dick comment...Not bashing the finish on the case, doesn't look bad, I was just focusing on the packaging is all!
Edited by sandres913 - May/16/2012 at 11:52am |
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Shaun
Purdue University Calumet - PUC Motorsports 2010 - Washington #18 2011 - Peoria #30 2012 - Wisconsin #54 |
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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Funny you say that, almost all of the case was cut with a 3/4" roughing end mill, it looks scruffy A lot of it was done manually so theres a ton of mistakes haha. The middle gear bits are welded together..
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jeiB
Baja Godfather Joined: Jul/17/2009 Location: Montreal Status: Offline Points: 604 |
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Looks like the middle shaft/gears are one piece no? |
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Jeremie B.
McGill Baja Racing 2009-2011 Captain minibaja.mcgill.ca |
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sandres913
Welding Master Joined: Aug/17/2011 Status: Offline Points: 216 |
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Holy gear reduction Batman! And for the diff! I'm looking at doing the same thing on our drivetrain next year! It looks like...*squints* a 4 spline? Interesting choice, machined in-house? Not bashing it at all, I remember the trouble we used to have with splines Case looks very nice! You should polish that sucker! MO' BLING!
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Shaun
Purdue University Calumet - PUC Motorsports 2010 - Washington #18 2011 - Peoria #30 2012 - Wisconsin #54 |
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ErikHardy
Baja Godfather Joined: Apr/12/2010 Location: Hood, Flint, MI Status: Offline Points: 939 |
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Loooooooved the Diff!! We have always run a spool so didn't really know what to expect with the diff. I was worried about the one wheel peel in the mud but was pleasantly surprised. The shim thats currently in there now leaves the diff relatively open which was excellent in the corners! Even in the Washington mud, never felt like I was going to get stuck. Its nice to be able to push the dam thing around without skidding a tire
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