Search: Posts Made By: BillyShope
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06-02-2010, 03:33 AM
Replies: 5
Views: 16,079
Posted By BillyShope

Have added a page (Page 45) that goes into this...

Have added a page (Page 45) that goes into this IC location/antisquat business a bit more rigorously.

Also, the old site now redirects you to the racetec site....
02-24-2010, 09:57 AM
Replies: 0
Views: 568
Posted By BillyShope

Wheel Load Changes With Weight Changes

I've added a spreadsheet (Page 44) which provides the new wheel loads and CG height when a component is moved, lightened, or deleted:
http://www.racetec.cc/shope
Edit/Delete Message
02-20-2010, 04:10 PM
Replies: 1
Views: 745
Posted By BillyShope

How about the front end? Suspended? If not, you...

How about the front end? Suspended? If not, you certainly don't want to go to a 4link. Consider the benefits of an ARB when added to a fully suspended car. The ARB acts to increase the rear roll...
01-19-2010, 02:47 AM
Replies: 7
Views: 1,273
Posted By BillyShope

Getting back to the original question, a higher...

Getting back to the original question, a higher numerical ratio will allow the engine to operate near the power peak over a greater portion of the track. This means a higher trap speed. It should...
09-19-2009, 04:43 AM
Replies: 2
Views: 714
Posted By BillyShope

Essential to know the horsepower per pound. I...

Essential to know the horsepower per pound. I would suggest you use Page 1 or Page 2 at my site. As I point out above the spreadsheet, the results are for comparative purposes only. But, that's...
08-21-2009, 04:24 AM
Replies: 0
Views: 506
Posted By BillyShope

Finding 3links in unexpected places

As I was preparing a new 3link spreadsheet for my site (Page 40), I realized that it could also be used with triangulated 4link and torque arm suspensions. While neither of these are normally...
08-07-2009, 03:52 AM
Replies: 7
Views: 1,306
Posted By BillyShope

Unfortunately (or, perhaps, fortunately), a car...

Unfortunately (or, perhaps, fortunately), a car can launch straight and still be losing performance because the rear tires are not equally loaded. A Camaro with stock suspension will unload the right...
08-04-2009, 04:28 AM
Replies: 1
Views: 739
Posted By BillyShope

Re: Mustang suspension rolling over

Which way?

Which tire?

If you have adjustable coilovers at the FRONT, you'll almost certainly want to use a higher RATE spring at the RIGHT front than at the left to promote more equal rear...
06-27-2009, 05:24 AM
Replies: 1
Views: 741
Posted By BillyShope

I've added 7 paragraphs to clarify use of the...

I've added 7 paragraphs to clarify use of the spreadsheet. The intent was to go beyond the "engine camshaft height is the same as the car's CG height" method, but some have interpreted the...
06-23-2009, 03:41 PM
Replies: 1
Views: 741
Posted By BillyShope

Determining CG height: An easier way

I've added a page (Page 39) which provides a relatively painless method for determining center of gravity height. No wheel scales or jacks are needed.
http://www.racetec.cc/shope
06-17-2009, 05:40 AM
Replies: 5
Views: 16,079
Posted By BillyShope

Though both sites are, for the present, up and...

Though both sites are, for the present, up and running, I'm encouraging racers to go to my new URL:

http://www.racetec.cc/shope

Same stuff, but it's a bit more readable and there is no traffic...
06-04-2009, 02:20 PM
Replies: 3
Views: 1,826
Posted By BillyShope

Yep, again. But, to expand on that, the car can...

Yep, again. But, to expand on that, the car can also veer to the left when you don't have enough preload.

Yeah, that's confusing, but, if you have little or no right rear preload, the left front...
05-27-2009, 04:33 PM
Replies: 0
Views: 910
Posted By BillyShope

Racetec's Tim Duffy helps Billy Shope

Some of you may have attempted to access my "Mostly Suspensions" site (http://home.earthlink.net/~whshope) in the last couple of weeks, only to find it down. This is because I've been using free web...
04-28-2009, 03:29 AM
Replies: 5
Views: 16,079
Posted By BillyShope

Antisquat and Instant Center Location

As the result of a long thread in another forum, I've added a page (Page 38 ) to my site which demonstrates that the tire patch force vector ALWAYS passes through the instant center. The spreadsheet...
04-04-2009, 04:03 AM
Replies: 3
Views: 780
Posted By BillyShope

You also need a set of scales if you're going to...

You also need a set of scales if you're going to make suspension adjustments for some serious dragracing.
http://home.earthlink.net/~whshope
over 140,000 page views
03-30-2009, 10:31 AM
Replies: 21
Views: 16,797
Posted By BillyShope

This going left on launch business was discussed...

This going left on launch business was discussed in the pro mod forum a few months ago.

Yes, a high powered door car will veer left on launch, and, yes, negative preload (adding static load to the...
02-25-2009, 12:28 PM
Replies: 1
Views: 516
Posted By BillyShope

I'm not familiar with the circle track programs...

I'm not familiar with the circle track programs to which you refer, but I would think that, unless they're fundamentally flawed, they should be applicable.

For steady state considerations, the...
01-07-2009, 04:51 AM
Replies: 5
Views: 1,665
Posted By BillyShope

I would only add that, unless you include some...

I would only add that, unless you include some form of asymmetry in your suspension, your 60 foot times will likely be worse. But, on the positive side, with the right setup, they'll be better than...
11-30-2008, 06:20 PM
Replies: 31
Views: 6,502
Posted By BillyShope

A more convenient number is obtained by dividing...

A more convenient number is obtained by dividing the rollout into the number of inches in a mile. This gives you wheel revolutions per mile.

Then, draw a long horizontal line and start inserting...
11-25-2008, 03:54 AM
Replies: 25
Views: 4,003
Posted By BillyShope

Excellent post, dparker!! At my site, I am...

Excellent post, dparker!! At my site, I am constantly harping on the importance of equal rear tire loading on launch. Too often, the response is: Hey, I'm going straight down the track, so everything...
11-18-2008, 04:40 AM
Replies: 15
Views: 1,935
Posted By BillyShope

http://i78.photobucket.com/albums/j89/BillyShope/l...

http://i78.photobucket.com/albums/j89/BillyShope/linkage.jpg
This came up in another forum and I put together a spreadsheet based on the picture above. Using the dimensions indicated with a 3250...
10-31-2008, 04:45 AM
Replies: 1
Views: 1,335
Posted By BillyShope

To avoid wheelstands, the front end percentage...

To avoid wheelstands, the front end percentage should be about 350 times the center of gravity height divided by the wheelbase.

Unfortunately, the short torsionally rigid chassis (compared to a...
10-31-2008, 04:29 AM
Replies: 13
Views: 3,064
Posted By BillyShope

Great to hear from you, Ed. Hope you got my text...

Great to hear from you, Ed. Hope you got my text message.
09-19-2008, 03:18 AM
Replies: 12
Views: 8,593
Posted By BillyShope

Re: RE

Why? You know what's going to happen.
09-16-2008, 12:49 PM
Replies: 12
Views: 8,593
Posted By BillyShope

The driveshaft torque provides an asymmetry. In...

The driveshaft torque provides an asymmetry. In other words, if you start with a perfectly symmetrical car, one with equal left and right loads at the front and equal left and right loads at the...
Showing results 1 to 25 of 58
 


 
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