250cc inline 4s?

[ZenBearClaw]

Going through alot of teams history pages over the years i've noticed that a lot of the cars from 5-10 years ago used 250cc inline 4s and reved the mess out of them. I'm wondering why that size and type of motor was selected. Was it rules? Or were the really that interesting. ( In the US its nearly impossible to buy an inline 4 <600ccs) It seems like that was the basis for the neat v8 So i'm really just wondering about the history of the 250cc motors as applied to FSAE

-Sloan

[ZenBearClaw]

Going through alot of teams history pages over the years i've noticed that a lot of the cars from 5-10 years ago used 250cc inline 4s and reved the mess out of them. I'm wondering why that size and type of motor was selected. Was it rules? Or were the really that interesting. ( In the US its nearly impossible to buy an inline 4 &lt;600ccs) It seems like that was the basis for the neat v8 So i'm really just wondering about the history of the 250cc motors as applied to FSAE

-Sloan

[Charlie]

I think UTA's use of the turbo 250 with so much success is why you've heard so much about it, and think it was popular.

What other teams have ever used a 250 I4?

I haven't done the calcs, but seems like without a turbo you'd be pressed to get as much torque out of a 250 as a 600. And I don't think the HP would be there either. So the big question is what would your weight gain be?

-Charlie Ping

I just need enough to tide me over until I need more.

[Matthew]

umn's '99 car was a 250RR

its still sitting around somewhere, dry sump and all and it is feaking tiny

-Matthew Hetler
hetl0020@umn.edu

[The guru of guru's]

What?? twin 250's.....so ur going to try and build the heaviest SAE car ever i see....hmmmm, good work grasshoper!

[Ashley Denmead]

Yeh i agree.......dont try and be different for the sake of being different!.....2 crank shafts, 2 gearboxs.....u've got to be joking!

The edge is not the limit it is mearly the beginning!

Deakin University Phantom Engineering Team Captain

[Charlie]

Did I miss something? Who said anything about 2 250cc engines??

-Charlie Ping

I just need enough to tide me over until I need more.

[James Waltman]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by ZenBearClaw:
... It seems like that was the basis for the neat v8 ....
-Sloan<HR></BLOCKQUOTE>


Charlie,
You took the words out of my mouth. Who said anything about two engines? All I can figure is that the V8 thing threw them off. Yes our V8 used 250cc four stroke heads. No it didn't have two crankshafts.
http://dot.etec.wwu.edu/fsae/v30/image003.jpg


Are the 250cc engines really that light? Can anyone post some weights for one?

James Waltman
http://dot.etec.wwu.edu/fsae/
Vehicle Research Institute at
Western Washington University

[The guru of guru's]

hrmm....now that looks heavy...just wondering how the F@#K do you cost that piece of...sh ahh i mean work..yeh!

[Dan Deussen @ Weber Motor]

Didn't you read the rules? Engine cost is determined by displacement!!! http://fsae.com/groupee_common/emoticons/icon_wink.gif

Daniel Deussen
www.walbro-italy.com (http://www.walbro-italy.com)

[Kevin Hall]

David

Before you flap anymore cussing on here about that work of art V8, go see it on their website. That was the cutest little engine ever to see FSAE. I don't know the weight, but if you see the car, you'll understand.

http://dot.etec.wwu.edu/fsae/v30/v30pics.html

Now, tell me you can do better..........

Cheers,

Kevin Hall
University of Saskatchewan
'03-'04 Team Director

[Lacy Lodmell]

I'm with Kevin on this one. Check out the website, it's a mindblower. And I thought I read somewhere that race weight for the Viking 30 was 420 lbs, which is pretty damn good for a just-under-600 cc car. James, can you confirm?

Lacy Lodmell
Vandals Racing 2003
University of Idaho FSAE

[Foote]

I believe actual weight of Viking 30 is 427 lbs.

Justin Foote
WWU FSAE

[Travis Garrison]

Like Justin said...427 lbs.

davidgeo, the engine is slightly heavier, with its transaxle attached, than an F4, but not much heavier, and it was designed from the get go as a stressed member of the chassis, Viking 30 is nothing but engine and transaxle for its rear end...and cutting off 1/3 of your chassis helps to offset a few more pounds in your engine.

...and like Kevin said, it's hardly a piece of shit (care to post some pics of your work for critiquing davidgeo?)...regardless of whether or not you agree with the approach of Viking 30, the guys who built that car did a phenomenal job...plus no one can say they lacked guts, they took on a massive project, and learned a lot doing it.


Travis Garrison
WWU FSAE

[Sam Zimmerman]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by davidgeo:
hrmm....now that looks heavy...just wondering how the F@#K do you cost that piece of...sh ahh i mean work..yeh!<HR></BLOCKQUOTE>

Wow, you just set yourself some high standards! http://fsae.com/groupee_common/emoticons/icon_eek.gif If you call the Viking 30 a piece of shit, I assume you will show up in May with something you designed that will make the Viking 30 look like a piece of shit.

Good luck! I can't wait to see it! http://fsae.com/groupee_common/emoticons/icon_biggrin.gif

Sam Zimmerman
Vandals Racing (http://www.uidaho.edu/~racing)

[Sam Zimmerman]

Opps, double post. I guess I got a little excited.

http://fsae.com/groupee_common/emoticons/icon_razz.gif

[Brent Howard]

I wouldn't worry too much about what Davidgeo says. Based on his comments I think he is likely a first year member on some team. He obviously doesn't know all the rules for FSAE and he's posting anonomously as well. Just ignore his attempts to critique design ideas.

Brent

www.ucalgary.ca/fsae (http://www.ucalgary.ca/fsae)

[osubeaver]

That V8 is amazing. I can't believe that a team actually did something like that. Wow.

[Chris Boyden]

I love it when some negative a-hole gets it in the a-hole. Good job.

[Eddie Martin]

If anybody knows the weight of a 250cc inline 4, i'd be really interested.

Regards
Eddie

[Ashley Denmead]

yeh that v8 does look good, i didnt think about building a bottom end and just assumed someone was considering having 2 engines........davidgeo may have made some stupid comments however he may have also been drunk at the time http://fsae.com/groupee_common/emoticons/icon_rolleyes.gif haha

The edge is not the limit it is mearly the beginning!

Deakin University Phantom Engineering Team Captain

[Matt Ahl]

From what I heard, the 250cc 4 cylinder weighs 96 lbs, but don't quote me on that, it's just what I remember hearing.

[The guru of guru's]

ok people sorri to cause such a fuss, but i was just testing how well the forum works...hehe engine is cool by the way

by the way i aint a this aint my first year!!!
:P

[Gonzo]

Only just got onto this thread and this is the first time I have seen pictures of the WWU V8.

Holy shit, that is cool! Congrats to WWU on a beautiful piece of engineering. I can only hope to achieve that standard of workmanship.

To anyone that knocks people who try unconventional stuff with that sort of dedication, get off this forum it ain't the place for you!

Geoff Spear
University of Auckland

[gug]

250 engines are very common in adelaide bike wreckers. in australia, for the first year and a half (approximately) after you get your bike license you have to ride motorbikes with 250ccs or smaller. since adelaide is surrounded by hills with nice curvy roads, there are pleanty of written off ZX-2s and babyblades which we can flog an engine from. our f4 cost AUD$2600 (i think, dont quote me on it), and i was getting quoted AUD$1200 for a complete (including exhaust headers and intake) babyblade (CBR250) motor.

- absolutely everything was available to him, but that only meant it was impossible to find what he was looking for, which is the purpose of computers.

[Aaron Harnden]

[QUOTE]Originally posted by Phantom_boy:
ok people sorri to cause such a fuss, but i was just testing how well the forum works...hehe/QUOTE]

Good one "Phantom_boy". That's a fine level of maturity displayed by a team's Vice Captain, your a great ambassador...... http://fsae.com/groupee_common/emoticons/icon_wink.gif

Phantom Engineering
Chief Design Engineering 2004
Deakin University, Geelong, AUST.