Search found 169 matches

by BillyShope
Thu Oct 07, 2010 5:38 pm
Forum: Chassis and Suspension
Topic: 125" hard tail altered questions
Replies: 12
Views: 13978

Re: 125" hard tail altered questions

bracketracer wrote: This is like beating a dead horse.....
I agree.

I didn't feel John's comment merited a reply. If engineers had to first ride a rocket, we'd have never made it to the moon.
http://www.racetec.cc/shope
by BillyShope
Thu Oct 07, 2010 7:21 am
Forum: Chassis and Suspension
Topic: 125" hard tail altered questions
Replies: 12
Views: 13978

Re: 125" hard tail altered questions

bracketracer wrote:There are more Altered's out there than you can count with a 4 link or ladder bar with no front suspension!!
And the majority is always correct. Did you vote for Obama?
http://www.racetec.cc/shope
by BillyShope
Mon Oct 04, 2010 7:00 am
Forum: Chassis and Suspension
Topic: 125" hard tail altered questions
Replies: 12
Views: 13978

Re: 125" hard tail altered questions

As you know, the driveshaft torque tends to unload the right rear and load the left rear. The reaction to this driveshaft torque is absorbed by the transmission/engine mounts. The reaction torque is equal in magnitude, but opposite in sense, to the driveshaft torque. So, if that reaction torque find...
by BillyShope
Sun Oct 03, 2010 10:06 am
Forum: Chassis and Suspension
Topic: 125" hard tail altered questions
Replies: 12
Views: 13978

Re: 125" hard tail altered questions

Hi Billy. Yeah, Dad and I are having a LOT of fun with this. I knew I would forget something usefull about the car; It has no front suspension, using fabricated spindle mounts (3-point contact to the chassis), and no front brakes. We have the wheelie bars, which are the bottom-flat-bar style, set o...
by BillyShope
Sun Oct 03, 2010 6:37 am
Forum: Chassis and Suspension
Topic: 125" hard tail altered questions
Replies: 12
Views: 13978

Re: 125" hard tail altered questions

Wonderful that you and your dad can work together on something like this.

Does the car have a front suspension? If it's a beam front axle, does it use a leaf or coils?
http://www.racetec.cc/shope
by BillyShope
Mon Aug 09, 2010 6:58 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

Billy, Have any pictures of the "original car" ??? I have a few. Actually, the picture of the suspension, in this thread, is of the original. But, you say, you can count 4 links and I said it was a 3link. Okay, here's the explanation. The upper left link was originally intended to telesco...
by BillyShope
Sun Aug 08, 2010 3:51 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

THIS picture you posted on here may be the one that started it all, and I believe it is the chassis to this car pics I have. Billy, look familiar? :smt003 This isn't the original car. This is a clone that was built recently by a group at Chrysler. As for the need for an ARB: The clone has a simple ...
by BillyShope
Thu Aug 05, 2010 8:17 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

I feel linkage geometry has a much greater effect than IC location.... Dave As for the significance of the lower link being parallel, let's plug in some numbers and see what happens. Suppose the lower link is horizontal with a rear attachment point directly below the axle centerline and 9 inches up...
by BillyShope
Thu Aug 05, 2010 1:55 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

In other posts, he’s mentioned that the car can oscillate fore-and-rear if an IC is at 100%. You've got me confused with someone else, Dave. I HAVE said that...even at 100% antisquat..., the rear of the car will wiggle as the front springs extend. But, the whole idea of setting a car at 100% antisq...
by BillyShope
Wed Jul 28, 2010 3:54 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

Here's an interesting example of the incorrect information out there on the web. At this site, there are two schematics of a car with upper and lower links that are parallel, in side view, to themselves. In one case, the links are horizontal and, in the other, the links angle up from the rear. It is...
by BillyShope
Wed Jul 28, 2010 5:41 am
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

At 100%, there is no relative motion between axle assembly and the chassis, so spring and shock forces are not important. Anyone want to buy my Afco's? I'm buying me some Monroes :lol: No shock absorber...whether OEM or aftermarket...can exert a force if the distance between upper and lower mountin...
by BillyShope
Tue Jul 27, 2010 7:20 am
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

Billy you have an unhealthy fixation on antisquat values, you really need to get out of the house more often... lol... Yes, I caught the disease during my schooling. All automotive engineers have the same problem. Antisquat is the only parameter which makes sense dynamically. http://www.racetec.cc/...
by BillyShope
Mon Jul 26, 2010 5:35 pm
Forum: Chassis and Suspension
Topic: rear coil over tuning help needed
Replies: 35
Views: 22883

Re: rear coil over tuning help needed

You say you've run different antisquat values. Have you tried to get as close to 100% as possible? Page 48 at my site gives you those 4link combinations which will work best. At 100%, there is no relative motion between axle assembly and the chassis, so spring and shock forces are not important. (Ac...
by BillyShope
Thu Jun 24, 2010 6:41 am
Forum: Chassis and Suspension
Topic: 4 Link System - Step by Step
Replies: 229
Views: 126492

Re: 4 Link System - Step by Step

Here's a post of mine from another forum. Thought it might clear up the questions some of you have: I'm tired of waiting. Let's bust some more myths! Specifically, these 3: * Lower link angle is, in itself, significant. * 4link spread affects weight transfer. * Instant center distance forward is, in...
by BillyShope
Wed Jun 23, 2010 8:01 pm
Forum: Chassis and Suspension
Topic: 4 Link System - Step by Step
Replies: 229
Views: 126492

Re: 4 Link System - Step by Step

I was trying to hit that cross just to the left. It's closer to 100% antisquat. Looks like the rear pivot for the bottom link needs to be in the bottom hole and the front pivot for the same link needs to be in the middle hole. But, the important thing I wanted to show you is still there. That 1 inch...