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Re: Bradley Univ. FSAE car - status: running. (Heinz57)
For some reason, I'm not feeling that cage/chassis design. The two downtubes that come from the main hoop forward... Looks bizarre to me. There also looks to be a lot of dead space in the front toe-box area. Anything planned to take up this space? The steering angle looks a little extreme from just a glance. I'm sure in person it's a lot better. Just some friendly critiquing, take it FWIW.
Construction looks good though. Good luck at competition! |
Re: Bradley Univ. FSAE car - status: running. (DSPDA3)
The two front bars, which we like to call the "donkey barz," almost doubled the frame stiffness during structural analysis, compared to the design without them. Yea, I agree there is a lot of empty space in the front of the car. I don't think we planned for it to look like that, but i guess no one noticed it in the pro/e model.
As for the steering, i'm sure one of the suspension/controls team guys will chime in sometime soon, but personally, i think it felt great when driving it. That steering is hellified responsive, and it's positioning doesn't feel uncomfortable. thanks for the comments! |
Re: Bradley Univ. FSAE car - status: running. (Heinz57)
I don't know if I like having the center of the biggest piece of mass in the car (the driver) sitting less than a foot behind the front wheels. A more rearward weight bias would have worked better, IMO (as has been proven in lots of past competitions).
Better make those bars some kind of sweet JDM color or you won't pull any tail at the drift showoff, y0. https://honda-tech.com/forums/images...s/emsmilep.gif One more thing, is your valve cover vent going to the exhaust? If so, do you have a check valve in the line to prevent backflow of exhaust into the valvecover? Modified by TeamSlowdotOrg at 7:37 AM 5/9/2005 |
I am nate. I make da suspension go bumpity bump. w00t! Dale Dale Dale! 8 8 8!
(thanks kyle for posting for me) https://honda-tech.com/forums/images...es/emsmile.gif Modified by Nate at 3:55 AM 5/13/2005 |
Re: (Nate)
I'll see you guys over there. I plan to stop by. I'm lucky to live only 20 mins away. https://honda-tech.com/forums/images...es/emsmile.gif
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I used to work for the WVU Formula Lightning team... something like SAE or FL is fun to work on. The FL series is now defunct and the car is now going to run in a drag race and a 1 hour enduro.
Best of luck to you guys, keep us posted. |
Re: (94accordsedan)
cool
so why did you decide to mount the engine backwards from what most teams do? was it to ease the intake/exhaust routing or something else? also do you know the weight of your bare chassis and the whole car? and the stiffness of the frame or car? good luck |
Re: (NegativeLift)
Yeah i was wondering that myself, it seems like it wouldnt allow any room for an effective intake manifold design while had it been the other way around the exhaust still could have been resonably competant, also allowing for a better intake mani design. What does your intake mani look like?
I'm on the Clemson team, it sucks I wont be able to make it to competition but good luck to your team and i wish i would be there to see it! |
Re: (madhatter07)
The engine is mounted backwards because of the CVT transmission.
Intake manifold packaging: not a problem, our old intake (for "forward mounted") engines fits on there just fine. Tight, but it fits fine. Therefore, intake packaging is not an issue. We went with a new intake because it better aligned the injectors, not because packaging was an issue. Exhuast packaging: Only real issue is fitting the muffler in there. We originally got a short, straight-through muffler, but its too loud. We're gonna have to throw an angled piece on there to package a longer muffler sideways. Packaging-wise, the rear of the car came out very nice. |
Chassis is around 70 lbs and is 1500 lb-ft/deg.
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Re: Bradley Univ. FSAE car - status: running. (Heinz57)
BUMP for updated pics and two short clips!
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Re: Bradley Univ. FSAE car - status: running. (Heinz57)
Haha, I like the seatbelt suckage... Are you guys gonna add a filter now?
Props on the entire project, I think it's amazing. https://honda-tech.com/forums/images/smilies/emthup.gif |
Re: Bradley Univ. FSAE car - status: running. (MrTodd)
Yea, we added a cone filter after that incident..haha. thanks for the props!
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Re: Bradley Univ. FSAE car - status: running. (Heinz57)
cannot wait to drive it tomorrow! https://honda-tech.com/forums/images...es/emsmile.gif https://honda-tech.com/forums/images/smilies/emthup.gif
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Re: Bradley Univ. FSAE car - status: running. (Nate)
do you guys have any comparative times for the car with the CVT and without the CVT? It looks like a cool idea, and I know the Baja team at out school runs it but i've never seen thenm on a bike engine
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Re: Bradley Univ. FSAE car - status: running. (madhatter07)
I am actually going to check out the data from the car in a few minutes. Hopefully it is fast as hell and handles even better. I will have to report some numbers later.
-nate (leaving tues for comp. lots to do!! https://honda-tech.com/forums/images...s/emsmileo.gif ) |
Re: Bradley Univ. FSAE car - status: running. (madhatter07)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by madhatter07 »</TD></TR><TR><TD CLASS="quote">do you guys have any comparative times for the car with the CVT and without the CVT? It looks like a cool idea, and I know the Baja team at out school runs it but i've never seen thenm on a bike engine</TD></TR></TABLE>
We don't have anything back-to-back. We can only compare our '05 car to our '04 car. However, we've improved the '05 car so much in the frame and suspension, that its not an apples-to-apples comparison as far as the engine is concerned. Our '05 engine package is definetly faster than our '04 package, just from the buttmeter. |
Re: Bradley Univ. FSAE car - status: running. (BUJonathan)
question: have SAE rules changed THAT much in the 3 years i've been out of school?? if i remember correctly, the ohio state car was made out of all kinds of cool stuff: carbon fiber, alluminum honey-comb, titanium... and had an air shifter on the "stock" honda tranny. different divisions? or did OSU really just have too big of a budget and too many people to make such custom parts. not to mention the availabilty o fparts made form unobtanium and the neccesary knowledge to bond them.
congrats on getting it workign though. i remember all of the troubles we had once the car was "done". |
Re: Bradley Univ. FSAE car - status: running. (asoduk)
no theres a difference between teams that only have 8-10 dedicated people and teams that have more money than they know what to do with along with the support to back it up.
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Re: Bradley Univ. FSAE car - status: running. (asoduk)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asoduk »</TD></TR><TR><TD CLASS="quote">question: have SAE rules changed THAT much in the 3 years i've been out of school?? if i remember correctly, the ohio state car was made out of all kinds of cool stuff: carbon fiber, alluminum honey-comb, titanium... and had an air shifter on the "stock" honda tranny. different divisions? or did OSU really just have too big of a budget and too many people to make such custom parts. not to mention the availabilty o fparts made form unobtanium and the neccesary knowledge to bond them.
congrats on getting it workign though. i remember all of the troubles we had once the car was "done". </TD></TR></TABLE> you can throw all that 'cool stuff' in the trash and still win the competition, see Cornell. they have a tubular steel space frame chassis, etc. They do have an electronic shifter though. with the resources OSU has had the past few years they really should place higher but they havent (10th last year), so they are still missing something. |
Re: Bradley Univ. FSAE car - status: running. (NegativeLift)
A simple light, well sorted out, reliable, and a well tested out car has a very good chance at wining the competition. Also doing well in the static events helps also. You can spend all winter long designing that trick differential, but if you don’t have time to test it then all that work was for nothing (other then a great learning experience). There are really two types of fsae cars. The “technical wow cars with example wings, carbon tub chassis, etc; good example is the UTA. The second is just a traditional car with simple push/pull rod suspension, dry sump, etc. If I had my wish I would build a very simple light car and get it done earlier. Then when the snow clears, beat the living shit out of it to see what breaks, fix it and continue beating the shit out it. Ps. I thought the Cornell car has a turbo also?? Ryan-Who will have to stop by the Bradly pit today at lunch.. |
Re: Bradley Univ. FSAE car - status: running. (canuckr)
good info guys! the OSU team i knew definately fell into the experimental car/material group. reliability wasn't THAT bad, although as any team in any sport/division/competition: more practice/testing would have made the most impact.
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Re: Bradley Univ. FSAE car - status: running. (asoduk)
Nice job!
Just to get a running car done in a year, if you guys started the beginning of this school year, is a big acomplishment. I know cause I've been thru it and it was an awesome learning experience. It also landed me in the world of the performance auto industry with high satisfaction and low pay! |
Re: Bradley Univ. FSAE car - status: running. (Marauder)
Why does it have so much blow by?
Please post some longer vids https://honda-tech.com/forums/images/smilies/emthup.gif |
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