Solidworks modeling

[Dave Cote]

Hey everyone,

I have been reading these forums for a few years but my FSAE building days are now over. I am finishing my M.Sc. degree now and I am starting a company that does Solidworks modeling.

I alread spent the cash on a full blown Solidworks license and now I am looking for clients. I "repainted" my FSAE Solidworks drawings of our racecar as a DC Solid Modeling sponsored car to demonstrate what I can do.

I drew everything in these images (except for some toolbox parts and the wheels) so if you know anyone that needs some solid modeling, feel free to point them to www.dcsolid.com (http://www.dcsolid.com). All the images have links to higher res versions for you to check out, all you have to do is click.

Dave
DC Solid Modeling (http://www.dcsolid.com)
(Former University of Saskatchewan chassis designer)

<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%201.jpg" TARGET=_blank>
Left side
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%201%20small.jpg
</A>
<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%202.jpg" TARGET=_blank>
Front
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%202%20small.jpg
</A>
<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%203.jpg" TARGET=_blank>
Right side
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%203%20small.jpg
</A>
<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%204.jpg" TARGET=_blank>
Rear
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%204%20small.jpg
</A>
<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%205.jpg" TARGET=_blank>
Driver's perspective
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%205%20small.jpg
</A>
<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%206.jpg" TARGET=_blank>
Exploded view
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%206%20small.jpg
</A>

[drivetrainUW-Platt]

Sweet! I like that last view, any chance you can post a bigger view of it?
good luck with the company

[BStoney]

...that is an interesting fuel tank. Where are the pickups located at?

[Dave Cote]

Mike, if you click on the images, you should be taken to a higher res version.

BStoney, this car was never actually completed, the team has been going through some rough times lately. As for the fuel tank, there is a sump that is lowered in the middle of the tank. It was thought that this tank could be made out of fuel resistant plastic pipe and filled with foam. Then the lowered center section would act as a buffer for fuel.

Dave

[olsen5]

Nice model, we used solidworks for our last 2 years here to model our cars as well. We had some problems modeling all the contours of our body panels and I'm just wondering what functions you used to model the body in these pics.


Bret

[Steve Yao]

Depending on what you can guarantee for accuracy, I might be interested in getting a copy of the F4i model you got there. PM me.

[Dave Cote]

Bret, to model the body of the car, I used surfaces instead of solid features. It is easier to create complex shapes that way. Also I find it easier to create guide curves by drawing two 2D guide curves on perpendicular planes and then project one curve onto the other curve to create your 3D guide curve.

Steve, the base model that I used for the engine is the one that has been floating around here for a few years. It apparently came from Enrico Diano from the University of Toronto and I found it on http://cad.motolib.com/ . We designed our 2004 car with this model but ran into a couple problems when we built the car because that model was missing some key features like the water pump and the oil filter.

Basically I took this
http://www.dcsolid.com/Temp_images/honda_600f4.jpg

And turned it into this
http://www.dcsolid.com/Temp_images/cbr%20600%20f4%20assembly.jpg

Then render it to get this
http://www.dcsolid.com/Temp_images/CBR%20600%20F4%20assembly%20-%20rendered.jpg

[olsen5]

Thanks for the help, will give it a go here soon,

Bret

[muffrx4]

that looks like a bucket of shit, good luck with your business.

unfortunately I'm unable to release pics of our car at this stage, so you'll have to be satisfied with a humble pic I did earlier.

PICTURE WITHDRAWN


muffed out

[jimi racer]

Originally posted by muffrx4:
that looks like a bucket of shit, good luck with your business.

Hey rotary head......

If your so bloody good why don't you post some renderings of "team Swinburne's" so called wonder car......

Good luck with ya rice burner....

[muffrx4]

jimi racer,

thankyou for your interest in team Swinburne. The following pic is a sneak preview, obviously due to running twin KTM engines, driving the rear wheels directly off the crankshafts is a bit of a group project so I really can't give those pics out.. needless to say the hubshafts are fully integrated into the crankshafts etc etc.

http://server3.uploadit.org/files/trn272727-helmet.JPG

[jimi racer]

Hey fista...

Why don't you get back to building your "billy" kart.... From what i've heard you'll be lucky to have it ready by the '07 event.....

What's your favourite colour....

Jimi Racer

[Frankong]

Twin KTM idea is of interest. How many of intake restrictor? is the one applied in each instance?

The kong

[muffrx4]

Of course it's 'of interest', that's why we're doing it. If you took the time to read the rules, you need one 20mm restrictor (in FSAE-A anyway, where E85 isn't legal) no matter how many 'instances' you have.

Please stop wasting people's time with your ignorance, read the rules and make a decision for yourself for a change.

Oh, and jimi racer/wanker - why don't you get back to ripping your "billy". Pull your bloody head in, you egotistical moron. What exactly is it you do anyway? All I've seen you do is slag others. Do you have a car?

[Frankong]

Rather than being a dick, answer my legitimate question! I didn't come here to be abused you half wit, so stop wasting my time! These forums are designed for F-SAE teams to interact and gain valuable feedback. Go back to modelling your inferior gaylord rotary engines that aren't eligible for the competition. Why don't YOU read the rules for a change you incompetent idiot!!!

[muffrx4]

Thankyou for your interest in this thread, friend. It's titled 'solidworks models' and my inferior engine therefore is posted.

The driveline is a source of inefficiency and is therefore removed for this years car. as mentioned previously the crank of the engine incorporates drive pegs for the wheels, a very simple idea, similar to a De Dion rear end assembly, PM for details frankong, more than happy to give you the design if you want to run this next year. advantages are many, especially cost/design events.

Interesting to note boy racer has not posted his car isnt it friend!

muffed out

[D-Train]

Interesting to note boy racer has not posted his car isnt it friend!
muffed out

Yeah, looks like some haven't even bothered to extrude a few profiles to make something that's completely fictional, but looks great. Seriously, there's some real engineering in clicking and dragging a mouse all day; not to mention moving desktop icons that need sorting. You'd all probably do very well in admin jobs, or possibly working at GM. Next you'll be showing me pics of your smoke-machine and strobe-light riddled car launch that resembles a rave more closely than an informative evening reguarding an engineering exercise.

[repeatoffender]

Originally posted by muffrx4:
Of course it's 'of interest', that's why we're doing it. If you took the time to read the rules, you need one 20mm restrictor (in FSAE-A anyway, where E85 isn't legal) no matter how many 'instances' you have.

Please stop wasting people's time with your ignorance, read the rules and make a decision for yourself for a change.

Oh, and jimi racer/wanker - why don't you get back to ripping your "billy". Pull your bloody head in, you egotistical moron. What exactly is it you do anyway? All I've seen you do is slag others. Do you have a car?

so much anger...

just because the state of origin excludes melbournites doesnt give reason for you to take out your anger on others!

so muff how do you plan on controlling the torque output from both engines? or do you settle for uncontrollable torque bias?

[repeatoffender]

Originally posted by jimi racer:
Hey fista...

Why don't you get back to building your "billy" kart.... From what i've heard you'll be lucky to have it ready by the '07 event.....

What's your favourite colour....

Jimi Racer

obviously its no longer yellow, maybe red for rmit?

[Conor]

I'm not going to hate on muff's rotary model because it's a really damn good model. I'm confident I could do the same, but I don't think I'd have the time... How do you guys find so much time to do so much detailed modeling when there's so much other work to be done building a car?!?!

[Dr Claw]

Meh, DC's F4i is more impressive than the through hole riddled rotary.. Nice pathing of the hoses and wires. Exhaust header is pretty damn slick too. Was it surface driven? or a straight up 3D sketch?

You dont seem to have SW surfacing capabilities though... drop me an email if you find your self doing any!

Car 1 (http://www.kenswaycoolstuff.homestead.com/files/venom2.jpg)

Car 2 (http://www.kenswaycoolstuff.homestead.com/files/venom1.jpg)

Car 3 (http://www.kenswaycoolstuff.homestead.com/files/venom4.jpg)

those are old as hell (did them when i was 16 in SW2001 in '01) but i'm always up for collaborating on crazy parts.

[Dave Cote]

Claw,

Thanks for the observations and for staying on topic. I have been using the Solidworks Routing feature for the wiring on the engine. The headers were drawn by 3D sketches that were driven by 2 perpendicular 2D sketches each and are equal length of course.

I didn't see the need for too many surface modeled parts on the car but I am happy with how the seat and the body turned out. I am now running SW 2007 x64 and I am getting a couple rendering glitches now - see the seat. Hopefully they get it sorted out for the next release.

Header
http://www.dcsolid.com/Temp_images/Header%20small.jpg

Seat
http://www.dcsolid.com/Temp_images/Seat%20small.jpg

<A HREF="http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%207.jpg" TARGET=_blank>Car
http://www.dcsolid.com/Temp_images/dcsolid.com%20FSAE%207%20small.jpg </A>

Dave

[Big H]

Originally posted by Conor:
How do you guys find so much time to do so much detailed modeling when there's so much other work to be done building a car?!?! Car, WHAT Car???


And here I was thinking this event was about making the best looking solidworks models to pull hot wimmens...
My apologises for being sadly mistaken http://fsae.com/groupee_common/emoticons/icon_wink.gif

[muffrx4]

Dr Claw,

I have withdrawn my picture. I don't think it fair to just lay into peoples hard work.


http://server2.uploadit.org/files/trn272727-xtreme13b_turbo_04.JPG


http://server2.uploadit.org/files/trn272727-xtreme13b_turbo_01.JPG

As a side note, I believe jimi wannabe kimi favourite color is actually a shade!

muffed out

[TPS]

Friend please what is twin KTM. How we get one of those.

[D-Train]

Originally posted by muffrx4:
Dr Claw,

I have withdrawn my picture. I don't think it fair to just lay into peoples hard work.


Well, that contradicts your first post here just a little. You must be stupid mate.

Yeah, i guess a rotary would be a great idea if they allowed them - except the whole endurance/reliability/economy thing.

[BryanH]

Hey Muff, I thought the reason for CAD is to enable engineers to perfect a design b4 manafacture, so lack of a hacksaw/tap is no excuse for your 300m fuel rails when 160mm would be plenty. Also the mount for the lower fuel rail is not in tension........
Cheers

[muffrx4]

halfast, Is that what you thought... thanks for the input.

http://server2.uploadit.org/files/trn272727-injector_pos.jpg

Realities of engineering, sometimes CAD can be half assed.

http://server3.uploadit.org/files/trn272727-DSC_4179.jpg

[BryanH]

Dear old Muff, thanks for the drawings/info
Cheers

[drivetrainUW-Platt]

Originally posted by muffrx4:
jimi racer,

thankyou for your interest in team Swinburne. The following pic is a sneak preview, obviously due to running twin KTM engines, driving the rear wheels directly off the crankshafts is a bit of a group project so I really can't give those pics out.. needless to say the hubshafts are fully integrated into the crankshafts etc etc.

http://server3.uploadit.org/files/trn272727-helmet.JPG

all talk and no show, whats the big secret? this is a learning competition, why hold back information, its not like anyone is going to be able to copy your design.

I really hope you are able to keep the rpm's consistant between the engines or going straight is really going to suck donkey balls

arent KTM's pretty spendy, 2 will be even more than one, 2X if I did the math right.

its going to be a solid rear axle effect in corners, be quite the drift machine

You could probably put some casters up front and just use sticks to drive it....

lets see some pictures before you talk it up too much

[Mike T.]

I'm curious how they plan to get the car going from the start line in autocross with the wheels connected directly to the crank and no clutch mechanism. Matching RPM's could be done mechanically with an axle of some kind, but I just don't see how you'd start the engines without the car in the air and the wheels free to rotate.

muffrx4, care to give some kind of explaination?

[Big H]

I really hope you are able to keep the rpm's consistant between the engines or going straight is really going to suck donkey balls To prevent the sucking of an ass's nut, independant throttling could be applied...

2 will be even more than one, 2X if I did the math right. Yup, I spose that it will be...

I'm curious how they plan to get the car going from the start line in autocross with the wheels connected directly to the crank and no clutch mechanism. tyresmoke baby, tyresmoke...

As for the actual car... A few or our team members saw a chain hanging - and do what they usually do... started jerking http://images.ford-trucks.com/forums/images/smilies2/bdaybiggrin.gif
As for designs, solidworks modeling etc. can be found here in our newsletter http://fsae.com/groupee_common/emoticons/icon_wink.gif
http://www.swinburne.edu.au/feis/teamswinburne/news.htm

[TG]

Originally posted by Big H:
independant throttling could be applied...

I'm curious how you will get this through tech being that the throttle has to be before the single restrictor.

The only way I can see this work it with carefully electronically modulated clutches on each side, but that would completely undermind the idea of having independant drives for each wheel. You would just lose power through the clutches. And it would seem to be more efficient to run just one larger engine with a clutched differential, possibly something like the notorious Rob Woods suggested a while back.

[drivetrainUW-Platt]

chirp chirp.....whats the story on this twin engine supercar????

[BeaverGuy]

Originally posted by Big H:
As for the actual car... A few or our team members saw a chain hanging - and do what they usually do... started jerking http://images.ford-trucks.com/forums/images/smilies2/bdaybiggrin.gif
As for designs, solidworks modeling etc. can be found here in our newsletter http://fsae.com/groupee_common/emoticons/icon_wink.gif
http://www.swinburne.edu.au/feis/teamswinburne/news.htm

Read that first line carefully. Because I think more than a few people are getting jerked around on this. And if you look at the newsletters it shows there intake construction which pretty fairly indicates how their "engines" are set up.

[TG]

Originally posted by BeaverGuy:
Read that first line carefully. Because I think more than a few people are getting jerked around on this. And if you look at the newsletters it shows there intake construction which pretty fairly indicates how their "engines" are set up.

Sorry, I like to carry hypotheticals out to the max... my sort of humor. I saw those intakes... pretty interesting but I wouldn't have prototyped them using SLS as the surface finish isn't that great.

[Andycostin]

Tim,

SLS may not have the best surface finish, but the material is heat and fuel resistant, and it doesn't take much work to get a mirror finish on it.

I also usually find that free parts that have to be modified are better than paying heaps to get stuff made??

But just my 2 cents

[TG]

Originally posted by Andycostin:
Tim,

SLS may not have the best surface finish, but the material is heat and fuel resistant, and it doesn't take much work to get a mirror finish on it.

I also usually find that free parts that have to be modified are better than paying heaps to get stuff made??

But just my 2 cents

Why not make a foam mandrel and make a fiberglass intake? There are many other ways to make it, too. With the SLS process it takes 2 hours to heat up and 2 hours to cool down on top of the time it takes to process and clean up. SLS is a very intensive process and not very efficient considering the end result for this application. Usually SLS is used for modelling structural parts that have limited loads in testing. Additionally, it's about $1200 for a bucket of the powdered resin the machine uses... not very cheap.

[Dave Cote]

I have had some interest in teams using the engine model that I drew up. I would be willing to share it with some conditions, send me an email at dave@dcsolid.com if you are interested.

Dave