Completed: Fifth scale 2008 F1 car

[Jagboy]

Hey guys, just found this forum and it looks awesome. I've posted this project on an RC site, but would like to get some engineer's feedback on it. So far it's pretty simple and I'm just working to get everything in place. I'll tweak/fine tune it later. Please give me some critiques, but keep in mind that only the basic principles are there (or should be) and that no real math has been done yet.

First body
[IMG:643:456]http://i14.photobucket.com/albums/a309/ ... tangle.jpg[/img]
Slightly more refined body with wheels and brakes
[IMG:691:286]http://i14.photobucket.com/albums/a309/ ... gle9-3.jpg[/img]
Side view so you can see the brakes
[IMG:656:197]http://i14.photobucket.com/albums/a309/ ... iew9-3.jpg[/img]
Brakes
[IMG:386:342]http://i14.photobucket.com/albums/a309/ ... y9-3-1.jpg[/img]
Master cylinders
[IMG:584:442]http://i14.photobucket.com/albums/a309/ ... nders1.jpg[/img]
Bias adjuster
[IMG:476:502]http://i14.photobucket.com/albums/a309/ ... roller.jpg[/img]

By the way, I'm a Junior in high school and am doing this for the SolidWorks student design competition. Thanks for your feedback!


JB

[manchild]

viewtopic.php?t=2867

viewtopic.php?t=1698

[flynfrog]

that looks nice

i got third in the SW comp a few years ago

why hydro brakes it will take a pretty big servo to operate them?

also there is a much simpler way to make a bias adjuster pick up carrol shelbys design to win

but nice work

[Ciro Pabón]

May I suggest a wireless 2.4 Ghz web camera on board to drive the car? I won a RC contest years ago with one (it costed me U$300 then, back in 1999, but I won over U$1.000 and I kept it). Not only will it make the car more realistic: it elevates your coolness rating (already high, if you ask me ) by a couple of points. I remember everybody wanted to have one when they saw our design, because it locates you in the driver seat and makes it easier to drive the car, once you get used to it. I know it is not related to 3D design, but it costs well under U$100 nowadays...

[Jagboy]

Thanks guys.

I couldn't find much on the Shelby bias controller after fifteen minutes of searching. If you have a link, that would be great.

An on board camera would be very cool, but as it is I'm pressed for time. The deadline is November 30 and I still need to learn a lot about solidworks. I've been using SW since May and have taught myself so far, but in many instances my skills just don't cut it. I'm really struggling with making the bevel gears, mating o-rings, and other things that are probably relatively simple. Any tips would be appreciated.


JB

[mep]

Hi
can you explain more detailed what you are planning to do.
I mean do you only want to design this car at the PC or
do you really plan to build this one?.
Which scale should it have?
1:5?

As for myself I am building a MP 4/21 on scale 1:4,5 whith
a 23 ccm twin boxer engine. Some of you might know it.
At the moment I am working at the gearbox and the strucural parts of the car.

Feel free to ask more detailed questions.
Unfortunatelly I am away next week for working.

[joseff]

May I suggest a wireless 2.4 Ghz web camera on board to drive the car? I won a RC contest years ago with one (it costed me U$300 then, back in 1999, but I won over U$1.000 and I kept it).

I used to race when I was 11-13. It's adults with huge budgets like you who ruin competitions for kids like us. But I'll be back. Oh yes, in 20 years I'll be back! MWAHAHA HAHA MWAHAHAHA HAHAHAHAHA!!!!!!

@Jagboy: I agree with the others, the braking system looks overly complicated. I raced 1:10 though, nothing bigger. For a 1:10, you don't have enough cooling in that bodywork. I used to race GT-style bodyshells (McLaren F1, of course!) with a hole half a windscreen size right in front of the motor just to keep it cool.

We used only 1 brake, hooked up to the 4WD as the "bias controller" but I guess you're probably planning to go hardcore RWD.

Sorry if my observations are inappropriate for 1:5.

[Carlos]

Great work---I think we may be spectators to the beginning of very
successful design future--- no matter what field he may choose---
Take every opportunity and apply diligence--- your attention to detail is alreadt superb. Congratulations.

[Saribro]

Auwwie, SolidWorks, teh horror :/, teh nightmares :'(. My P&O team learned a lot of new derogatory terms and all sorts of cursing and insults from me those weeks I was assembling the model of our launchplatform :/.

[Ciro Pabón]

I used to race when I was 11-13. It's adults with huge budgets like you who ruin competitions for kids like us.

Are you calling me an adult? I resent that.

[Jagboy]

@mep: Right now I'm only worrying about building it on my computer. Finances just aren't there to make it physical. Maybe some day, but not in the forseeable future.

@joseff: I'm trying to get as scale of performance as I can. 4 wheel disc brakes add a lot to that as well as bump up the cool factor. I plan to have big holes in the chassis side plates where large heat sinks coming off of the motor, batteries, and ESC can really feel the air flow. I just realized I didn't put a picture with the body off. I'll do that as soon as I can. That comment will make more sense later.

@Carlos: Thanks! I'm working as hard as I can to make that be true.

@Saribro: I like SW, then again I've never tried anything else. Their $150 price tag for SW and COSMOS was really hard to pass up.


JB

EDIT: Here is the topless picture. Bear in mind that the twin plates are in the extremely early stages of development and only display the general idea of what the end product will be. Yes, this car will, regrettably, be electric. I don't have time to design an IC engine, so a massive 7Kw electric brushless motor will power the car.

[IMG:747:514]http://i14.photobucket.com/albums/a309/ ... opless.jpg[/img]

[Jagboy]

I got about 8 hours in yesterday after two weeks of almost 0 hours. The motor is mounted, the differential and gearbox are nearly finished, the TVPs are looking more like they should, and the body is even better. Today I started the rear suspension and got pretty far. Everything is there is basic, but it's a great starting point.

Some suspension finally. A arms are pretty rough but they serve their purpose for now.
[IMG:798:384]http://i14.photobucket.com/albums/a309/ ... haarms.jpg[/img]

Topless shot of the same angle:
[IMG:799:384]http://i14.photobucket.com/albums/a309/ ... opless.jpg[/img]

Rear suspension close up:
[IMG:798:401]http://i14.photobucket.com/albums/a309/ ... ension.jpg[/img]

With transparent top gearbox case:
[IMG:655:425]http://i14.photobucket.com/albums/a309/ ... earbox.jpg[/img]

Please comment.


JB

[mep]

Do you have a differential in the rear or a stiff axle.
It looks like a stiff axle because the part you drawed seems
to smal to be a diff.
I am using a diff at the car I build but this makes a few
problems because it is very large.
How do you attach the suspension to the gearbox.
This is also a thing I am thinking about very much at my car
because the fixing must be very stable to cary the heavy loads.
Your design is very equal to my one.


You can ask me some questions if you want.
My car should run once and so I have to think much more about every
part.

[Jagboy]

Yea, it is a differential. Most parts as they sit now have the right features, but wrong dimensions. The shocks are too small, the gears are not all the right size, the diff is too small, the gearbox needs more mounts, the suspension geometry is not calculated, etc. Once I create all of the critical parts I will put my efforts towards making everything mathematically correct. You have a pm.


JB

[zac510]

The detail is still excellent, keep up the good work