First-Gen S10 Corner Carver

[jerome]

pics as promised, not ride height though...about 2 inches higher spring adjusters are still not adjusted and no weight either













and I know front wheels are switched...

[greencactus3]

looks good for sure!

i dunno if this has been covered or not but rear swaybar gonna happen?

[jerome]

I'll use a splined bar w/arms. There are tabs on the axle for the endlinks, and bushings are on their way in the mail, but I won't buy a bar/arms until I know how much bar I need after driving it.

[SaturnVUEguy]

...I have plenty of room for suspension adjustment, I just need to plug in the numbers into the code I wrote, and it's pretty easy to figure out which hole to put the bolt in...

Care to post this code you came up with, or at least let us know how you came up with it? Sounds like a great idea, but I wouldn't really even know where to start

[jerome]

%x=out
%y=forward
%z=height
%a=axle f=frame
%l=lower u=upper

%INPUTS
cgh=24; %center of gravity height
wb=109; %wheelbase
axh=13; %axle height
al=[-22.25 22.25;0 0;8 8]; %lower links axle coordinates
au=[13;0;18]; %upper link axle coordinates
fl=[-8.5 8.5;28 28;10.5 10.5]; %lower links frame coordinates
fu=[13;13;17]; %upper link frame coordinates
pb=[0;-6;13]; %panhard coordinates
mc=3000; %mass of car
mr=250; %mass of rearend unit
axr=4.10; %rearend gear ratio

%ANALYSIS
mu=(fu(3)-au(3))/(fu(2)-au(2)); %slope of uppers
ml=(fl(3,1)-al(3,1))/(fl(2,1)-al(2,1)); %slope of lowers
in=[-mu 1;-ml 1]\[au(3)-mu*al(2);al(3,1)-ml*al(2,1)]; %intersection
SVSA=in(1) %side view swing arm
antisquat=(in(2)/in(1))/(cgh/wb)*100 %antisquat percentage
pvcy=(fl(2,1)-al(2,1))*al(1,2)/(al(1,2)-fl(1,2)); %plan view convergence y coordinate
pvcz=(fl(3,1)-al(3,1))*pvcy/(fl(2,1)-al(2,1))+al(3,1) %plan view convergence z coordinate
offset=(au(3)/(al(3,1))*axh*mc)/(axr*(mc-mr)*(cgh/wb+abs((au(3)-fu(3))/(fu(2)-au(2))))) %third link offset necessary for 100% cancellation
conv_angle=atand((fl(1,1)-al(1,1))/(fl(2,1)-al(2,1)))

%PLOTS
subplot(2,1,1) %plan view
plot([al(1,1),fl(1,1)],[al(2,1),fl(2,1)],'b') %lower driver
hold on
plot([al(1,2),fl(1,2)],[al(2,2),fl(2,2)],'r') %lower passenger
plot([au(1),fu(1)],[au(2),fu(2)],'k') %upper
title('Plan View (top is front)')
subplot(2,1,2) %side view
plot([al(2,2),fl(2,2)],[al(3,2),fl(3,2)],'r') %lower arms (uses passenger numbers)
hold on
plot([au(2),fu(2)],[au(3),fu(3)],'k') %upper arm
plot([al(2,2),wb],[0,cgh],'c') %anti-squat line
plot([fu(2),in(1)],[fu(3),in(2)],':k') %upper extension to intersection
plot([fl(2,1),in(1)],[fl(3,1),in(2)],':r') %lower extension to intersection
plot([pb(2),pvcy],[pb(3),pvcz],'m') %roll axis
th=linspace(0,2*pi);
plot(13*sin(th),13+13*cos(th))
plot(3.25*sin(th),13+3.25*cos(th))
title('Side View (right is front)')
axis([subplot(211),subplot(212)],'equal')

you can run it in matlab if you have it. I basically just calculated roll steer, side view swing arm lengths, and antisquat numbers for a given set of arm lengths and angles. You can then change the angles and see how these numbers react in bump and droop. A bit messy, but it works.

[SaturnVUEguy]

Thats quite the complex code. How much have you had to use it? I'm guessing a bit since you have the suspension set up already. Hope this all works out for you with the wheelbase/bed being off. I'm sure you'll get it right though, judging by the rest of the project

[jerome]

haven't used it recently, just for planning it. as you can see the wheelbase variable still says 109 for when I thought it was a shortbed haha

I will have to use it again to figure out initial settings for first drive though

[Eric Howell]

Any updates?

[Dogsofjune]

Wow, lotsa work involved. Interested to see the finished product.

[jerome]

taking the gmat(standardized test) tomorrow, so I've just been studying for the past two weeks.

The thrash to get it driving begins tomorrow night, goal is to drive in two and a half weeks!

stay tuned, hopefully I'll have some good updates in the coming weeks.

[wiedemab]

Wow - I haven't seen Matlab code since my engineering days back at Purdue - 2002.

Brings back some fond memories and some horrible nights in the computer lab writing code.

Keep up the good work.

Later

[Twentyover]

ummm...lessee

We were using TTY's and punch cards running basic and fortran, and computers filled air conditioned rooms the size of my house.

We went to the 'computer center' with a pile of punch cards......

[andrewb70]

taking the gmat(standardized test) tomorrow, so I've just been studying for the past two weeks.

The thrash to get it driving begins tomorrow night, goal is to drive in two and a half weeks!

stay tuned, hopefully I'll have some good updates in the coming weeks.

Good luck on the GMAT. I took it in May. Eat breakfast before you go. Take your time. Take a s**t before you go. Take all of the breaks that are given to you.

Andrew

[jtodd71]

Subscribes. Any updates?

[jerome]

back home for Thanksgiving, will have some progress this week.

[72LeMans]

may i suggest a solution for your distributor problem. i noticed you have a hei large cap style distributor. why not sell it and buy yourself a msd small cap pro billet distributor.

[bonecrrusher]

I just read the whole thread, I'm digging it alot.

I kind of LOL'd when you discovered teh frame problem, but it looks like you got it resolved.

As for the Gmat, thats a crappy test, trust me. But you'll get through it and eventually get through grad school as well.

Good luck!

-Craig-

[jerome]

hooked up all the electrical to try to start it tomorrow.

Cranked it over a few times with the starter and all of the sudden it won't turn over anymore. It definitely turned over more than one revolution (more like 5 seconds), so its not like a rod doesn't have clearance.

Took out all the plugs, unhooked the serpentine, undid all the rockers. Motor still won't budge.

Anyone have ideas before I take it apart tomorrow to check for a foreign object in one of the cylinders?

[Joshstix]

If you have a transmission on there it may be the starter lokced out against the ring gear or some other forreign object wedged in the ring gear.

[dusterbd13]

ave you checked the onnections, attey, etc? if youre not gttingvoltage, it wont crank. try it right at the starter ith a fresh battery and some jumper cables, etc. hot wire the coil, etc. if is not internal, should crank.

also, yure using a t56, right? mak sue that its not caught betwen gears. also check to make sure that your cutch is fully disengaging.

michael