Check out the hubs on this thing. Beautiful. And do I read that right - 100g wheels? That's less than 4 oz for those who don't spec metric. These kids have access to some high end fabrication capabilities, but it's allowing them to do wild things.
Awesome. Makes me want to go back to school just to play with this stuff.
http://www.racecar-engineering.com/articles/formula-student-tu-munich-tech-analysis/2/
In reply to Keith Tanner :
In the old days, part of the constraint was a cost target. Seems to have gone away, very drastically.
I briefly looked at the FSAE that was brought to the challenge. Those students are so far outside the normal car guy box that I'm not sure they can even see our box. With 3d printing and those sorts of brains being unleashed on the world, we're in good hands as a sport.
That's impressive but believable when you consider the size of an FSAE wheel. The hub-mounted motors are an interesting choice, I guess with their super-light uprights and wheels it could have a comparable unsprung weight to an axle setup plus a lower overall vehicle weight.
alfadriver said:In reply to Keith Tanner :
In the old days, part of the constraint was a cost target. Seems to have gone away, very drastically.
Indeed, and this isn't even the biggest-budgeted team...that would be TU Delft.
Those German teams are so heavily bank rolled by the OEM's over there it's not even funny. Their budgets and tech always made us Baja guys feel like toothless hillbillies.
alfadriver said:In reply to Keith Tanner :
In the old days, part of the constraint was a cost target. Seems to have gone away, very drastically.
It's still identified as part of the judging, so it's still there. I'm guessing the cost of the tools is not included, kinda like the challenge. A 3D printed hub may not be that expensive.
Here's a sample cost spreadsheet: http://www.fsaeonline.com/content/E217_University_of_Akron_FSAEE_CR_Supplement(rev2).pdf
Ram50Ron said:Those German teams are so heavily bank rolled by the OEM's over there it's not even funny. Their budgets and tech always made us Baja guys feel like toothless hillbillies.
It's probably a pretty good return on investment by the OEMs, though!
That's bonkers. Some serious design skills.
Ram50Ron said:Their budgets and tech always made us Baja guys feel like toothless hillbillies.
Are you sure it was just their budgets and tech?
That is a very impressive piece there! From what I understand a lot of these super high end Formula Student builds are heavily influenced by the (very generous) sponsors. Also regarding wheel weight, I would absolutely not doubt their stated weight, look how large the hub is, there's hardly any rim there! For those that don't know, a VERY large percentage of Student/SAE cars break during these events. They're reliability is quite poor because many of them do not get tested thoroughly enough. I would be really interested in seeing how all of this stuff holds up in competition.
Canoe city. Don't click the link
Zombie thread. Canoe deleted.
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another canoe?
In reply to alfadriver :
apparently. so hard being a student these days... they all seem to be resorting to a life of paddles and spam
Ram50Ron said:Those German teams are so heavily bank rolled by the OEM's over there it's not even funny. Their budgets and tech always made us Baja guys feel like toothless hillbillies.
I was part of USF's FSAE team. As treasurer I successfully lobbied for our highest budget ever, approx $80k from the school. We had 2-3x that much donated coming into us in materials, labor, and other things.
German teams still made us feel like toothless hillbillies.
Oh dog damnit. Is this another berking canoe necro-bump?
Paddling shiny happy people.
On topic, though. Over two years of optimization, I was able to remove 4-5lbs of unsprung weight from the corners. We were the lightest steel frame car at Michigan for a couple of years running.
canoe
Canoe about a week after FSAE Michigan. Good timing at least.
USF got 20th overall, I think? Pretty decent.
I thought that looked old (Keith's linked article). I remember FSAE comments from 20+ years ago - The german teams had Titanium uprights, this was like space age stuff! Their reasoning - "Ah, well Ti uprights have been in F1 for years now..".
I know it's a zombie thread but holy E36 M3 these crazy cool builds are the exception rather than the norm.
Most teams use Miata hubs and hobble their way across the finish line.
My alma mater team wasn't bankrolled so hard that we got SLS titanium prints, but we worked with vendors and identified key points to manufacture vs purchase COTS - we weren't the best but we weren't the worst. We had an SLS printed intake, machined aluminum hubs, machined alumnium diff carrier (which I wasn't a fan of, it was a really poor design from a manufacturing and usuability standpoint), and a custom fabricated exhaust, but we used a COTS steering wheel, COTS brakes, throttle body (kind of, we stole the internals from a COTS ITB and slapped it into a machined body since you can only have one throttle body).
COVID really took a hard hit as they don't even have a rolling chassis, which disappoints me. My final year on the team/in college I was chief engineer and then the title promptly stripped away as the entire campus shut down due to COVID, and all competitions canceled. But I worked really hard with the team remotely even after graduation to define engineering life cycles and timelines to ensure that they at the very least had a running car ~4 weeks before competition to gather data, so it's upsetting to see all of my and my fellow alumni's (alumnus?) hard work get pissed away.
Years ago I worked the Auto Club Speedway FSAE event in SoCal, and there were some antics going on regarding questionably legal mods. The two obvious ones I saw were both exhaust related. Some smart kid noticed that the exhaust sound limit test was performed at one rpm, so they designed a resonator box tuned to that frequency. Their car passed no problem, and was the loudest car at every other rpm.
The other exhaust trick was "accidently" having your muffler fall off, though I imagine that would/should black flag the car.
Smokey Yunick would be proud.
hunter47 said:COVID really took a hard hit as they don't even have a rolling chassis, which disappoints me. My final year on the team/in college I was chief engineer and then the title promptly stripped away as the entire campus shut down due to COVID, and all competitions canceled. But I worked really hard with the team remotely even after graduation to define engineering life cycles and timelines to ensure that they at the very least had a running car ~4 weeks before competition to gather data, so it's upsetting to see all of my and my fellow alumni's (alumnus?) hard work get pissed away.
Thats a bummer.
I really do wish there were similar competitions for adults. And not just "go build an A-mod car"
In reply to kb58 :
The other trick was to pack the exhaust with steel wool right before tech inspection. Quiets down the car nicely for tech, but by endurance seemingly half the cars were much louder for some reason....
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