Archive for April, 2010

Installing the C4 Corvette Rear Sway / Stabilizer Bar in the Hot Rod

Wednesday, April 7th, 2010

Installing the Rear Sway / Stabilizer Bar

Now it came time to install the rear sway or stabilizer bar on the 1929 Ford roadster hot rod.  The C4 Corvette rear suspension looks real nice underneath the Ford Roadster so far.  With the composite mono spring, there will be a certain amount of sway bar action.  This is the nature of this type of suspension and will just not be enough for this hot rod.  The original sway bar from the 1986 Corvette Indy Pace car has a large footprint and will be a bit of a challenge to install on the chassis.  Mounting it towards the center of the car just would not work.  If I mounted it toward the rear of the car, I would have needed mount it on the rear body rails of the Brookville roadster body.  That did not make any sense.  It was then I realized that the frame was too short.  If I lengthen the frame to the point that the chassis frame rails would still fit inside the Brookville Roadsters body frame rails, I would be able to attach the rear sway bar to the chassis.  How lucky could I get?  It was meant to be!  All I would need to do is make the frame about 10 inches longer.  Of course I could have made my life real simple and bought some after market sway bars.  I decided against this.  My goal from the onset of this project was to use as much of the 1986 Corvette as possible in the build of my hot rod.  So my stubbornness won out.  The hot rod chassis was going to be modified and lengthened to accommodate the C4 Corvette rear sway bar.

 

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 1 - If I wanted to use the original 1986 Corvette rear sway bar, I will need to make the chassis a bit longer.  The 1929 Ford roadster body from Brookville Roadsters was originally equiped for a rumble seat.  With the frame rail inside the body rails, the rumble seat body metal needed to be removed along with one body cross member.  I sold all of this very easily as I could not use any of it.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 1 - If I wanted to use the original 1986 Corvette rear sway bar, I will need to make the chassis a bit longer. The 1929 Ford roadster body from Brookville Roadsters was originally equiped for a rumble seat. With the frame rail inside the body rails, the rumble seat body metal needed to be removed along with one body cross member. I sold all of this very easily as I could not use any of it.

Using a cut off wheel inserted in my 4 inch portable grinder, I cut out the welds off the rear section of the hot rod chassis.  Taking something like this apart also gave me a chance to look at the quality of the welds and how strong this was initially assembled.  All looked good in the dis-assembly process. 

1929 Ford Roadster rod - C4 Corvette IRS rear sway bar installation - View 2 - The rear section of the chassis was removed and the frame rail is prepared to be lengthened.

1929 Ford Roadster rod - C4 Corvette IRS rear sway bar installation - View 2 - The rear section of the chassis was removed and the frame rail is prepared to be lengthened.

 I had a couple sections of the 2 x 4 inch rectangle tubing I had left over from the main part of the chassis.  The extensions were cut to size.  To make sure that the extensions would be attached straight, I found some long and very straight pieces of angle iron and c-clamped them to the main part of the chassis and the extensions.  Once I was satisfied of the placement of the extensions, they were tack welded in place.  The rear section of the frame that I removed was re-sized and also tack welded in place.  Making sure everything was as it should be; I finished welding everything with the mig welder. 

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 3 - a short section of 2 inch by 4 inch rectangular tubing is added to the frame rail.  The chassis will still fit inside the body frame rail of the 1929 Ford Roadster.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 3 - a short section of 2 inch by 4 inch rectangular tubing is added to the frame rail. The chassis will still fit inside the body frame rail of the 1929 Ford Roadster.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 4 - The rear section of the frame is welded back on to the chassis.  Notice the masking tape.  I used it to mark the center line of the chassis and the axle center line.  Often I will use high heat paint to scrible lines on the metal for cutting and shaping purposes.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 4 - The rear section of the frame is welded back on to the chassis. Notice the masking tape. I used it to mark the center line of the chassis and the axle center line. Often I will use high heat paint to scrible lines on the metal for cutting and shaping purposes.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 5 - Notice the notches in the roadsters body rail.  This is required to allow the body to fit over the C4 Corvette rear axle side mounts.  I will strenghten the body later on and show how I moved and made new rear body mounts for the 1929 Ford roadster.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 5 - Notice the notches in the roadsters body rail. This is required to allow the body to fit over the C4 Corvette rear axle side mounts. I will strenghten the body later on and show how I moved and made new rear body mounts for the 1929 Ford roadster.

Fabricating the mounting brackets for the sway bar mounts was next on the agenda.  Using a small section of 2 inch square tubing as a spacer and a nicely shaped piece of quarter inch steel plate everything was starting to look pretty good. 

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 6 - This is the mounting bracket I made up for the 1986 Corvette rear sway bar mount.  It is made of a small section of 2 inch square tubing and 1/4 inch steel plate.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 6 - This is the mounting bracket I made up for the 1986 Corvette rear sway bar mount. It is made of a small section of 2 inch square tubing and 1/4 inch steel plate.

 Having a few good tools makes the fabrication process easier when building a hot rod.  In this case, a small stationary metal band saw is indispensable when building a hot rod.  Some time ago, at a swap meet, I came across the metal cutting band saw.  It was missing a motor and a few other parts.  The price was right and I bought it and fixed it up.  Now instead of using the plasma cutter, the band saw makes short work on small hot rod brackets.  All of my brackets get sanded smooth on all edges.  For this I use a small 1 inch stationary belt sander mounted on the work bench.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 7 - The adjustments to the chassis are completed.  The sway bar is a bit close to the inside of the tire.  I will need to replace the 1986 Corvette sway bar bushings with new ones.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 7 - The adjustments to the chassis are completed. The sway bar is a bit close to the inside of the tire. I will need to replace the 1986 Corvette sway bar bushings with new ones.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 8 - The sway bar is a bit off center and the tire clearance is tight.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 8 - The sway bar is a bit off center and the tire clearance is tight.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 9 - With the C5 Corvette rims and larger diameter and wider tires, I might have a problem with clearance between the 1986 Corvette sway bar and the tires.  I might do one of two things, replace the tires with narrower ones or most likely use a wheel spacer.  We will see how this shakes out later on.

1929 Ford Roadster hot rod - C4 Corvette IRS rear sway bar installation - View 9 - With the C5 Corvette rims and larger diameter and wider tires, I might have a problem with clearance between the 1986 Corvette sway bar and the tires. I might do one of two things, replace the tires with narrower ones or most likely use a wheel spacer. We will see how this shakes out later on.

With the chassis extensions in place and the sway bar receiving brackets mounted to the frame, it came time to install the rear sway bar.  Once it was installed, I noticed the link bushings were worn and needed to be replaced.  The clearance between the sway bar and the rear tires is a bit close.  I still need to perform and alignment on the rear wheels and that will need to wait till the final assembly of the chassis/hot rod.  If needed, one of two options can be used to solve this problem.  Either wheel spacers or use a smaller tire.  The decision for this will wait till the car is on the road. 

 The next step will be to install the front sway or stabilizer bar for the 1929 Ford hot rod.  Come back next week to see how this was done.

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Hot Rod Project Management 101

Saturday, April 3rd, 2010

Hot Rod Project Management 101

Tomorrow will be Easter Sunday and a day to spend with the family.  A nice meal and the weather outside is absolutely terrific.  What more can a person ask for?  Life is good.

Continuing with my quest of designing and building the chassis for the 1929 Ford Roadster hot rod using C4 Corvette suspension components from a 1986 Corvette Indy Pace car has not been an easy one.  There have been many changes and modifications to the hot rod project.  The chassis is an example of what some would say is a design prototype.  I did not work from any plans, and everything is created as I move forward.  This is a design created on the shop floor away from the computer screen.  If all I could do is work on the hot rod that would be great.  The average person building a hot rod cannot.  There is work to contend with.  You need to pay the bills, so you need to work.  We have families, and everyone in the family deserves some good attention.  You cannot ignore your family.  If you do, then you get into big trouble.  Then there are your accommodations.  In my case, the old Victorian house I live in.  It requires a great deal of attention in the way of renovations.  In the summer there is grass to cut, weeds to trim, and in the winter time, snow to shovel.  If you have anything else on the side like I do, with a couple of apartments, then you have to deal with tenants.  There are so many things that will interfere with the build process of a hot rod.  I guess this is why we see all sorts of unfinished hot rods for sale.  The builder lost focus and interest.  It takes time to build a hot rod, lots of time.  You need to keep on track and be determined to finish any project.

There are all kinds of theories of Project Management.  The most recent dictate how to develop a scope statement that defines the project, gantt charts that set out time lines for the project, and define who does what. Project management theories are of little use in this situation.  You can set out time lines and make charts but you have to put your hands on the materials and the tools and do the work.  People who can formulate an idea and then flesh it out by actually finding, and assembling the materials with the necessary tools are becoming more and more rare.  With your own projects or any project on any scale, there is a time to leave the computer screen or the pencil and paper and the “visioning” sessions and put your hands to work.  As time moves on, we are generating a society of individuals that do not know how to build or make anything with their hands. Shops and shop classes of all kinds have slowly disappeared from secondary schools and engineering schools. No one builds anything in a shop.  Students are taught to draw a picture of something in AutoCAD.  I have noticed this in the College program that I teach over the last 25 years.  Students now do not have the same hand skills when compared to students 25 years ago.  They are not familiar with the qualities of the materials they are putting into their designs.  Now the world has the plastic snow shovel.

A good example of problem solvers, builders, real project managers would be the group in MythBusters. Jamie Hyneman, Adam Savage, and the cast of MythBusters have the right approach to engineering. All you need to do is watch their show and you will get the idea. People like Jamie and Adam are few and far between. You cannot teach these types of skills, they are acquired. These fellows are a very rare breed of problem solvers.

As a teaching professional that has been building anything and everything for my entire life, I find that these project management theories and methods are nothing but useless.  These are positions filled with people that do not know how to build anything.  The old and probably politically incorrect saying use to be:  “Too many chiefs and not enough Indians.”  Now it is too many project managers and not enough builders.  There are many things that cannot be predicted from the screen of a laptop.  If there is any doubt about the veracity of this statement in your mind, answer one question. Has any project manager been able to finish a project on time and within budget?  There is bonuses paid and after the dust has settled they give themselves awards within the associations they belong to.  Oh well!! 

Back to your own project. You better know how to feel whatever it is you are building.   Working on a computer in front of a monitor does not give you that experience.  It is the start, but a designer needs to get dirty hands out on the shop floor.  These designers think that the 3-D image on the computer monitor is all they need.  Do not fall into the trap Toyota has fallen into.  Here we have a group of designers blaming the acceleration problem on driver error, floor mats, and the gas pedal.  Maybe some of this is true and maybe not.  These designers are not listening to the problem.  Designers are quick to pass on blame, even going so far as to blame the problems on the assembly line workers in some cases all to avoid taking ownership of the problem.  Many critics believe it may be an electronic problem based on their own experience with their own Toyotas.  Okay, some of the facts might be hidden.  Car manufacturers are good at holding back information.  They assess risk and determine what the risk will cost them in the courts.   Let’s stop and think about run away Toyota’s.  Modern electronics are getting smaller.  We are using electronic devices that are very small, even microscopic.  The automobile has one of the most hostile environments around.  There are extreme temperature changes, salt, sand, dust, grease, moisture, and all sorts of grime and dirt.  It is very hard to seal out, prevent contamination, and effects of these foreign elements.  With electronics getting smaller, it takes less to create an electronic problem on circuit board.  With vibration, and the expansion and contraction of parts due to temperature, it is not that hard to have an electronic malfunction especially an intermittent one.  These intermittent problems are the most difficult to find and address.

What does this have to do with building a 1929 Ford Roadster?  Whenever a project is created, you better be prepared for the unexpected and adapt to it.  You need to be like the Borg on Star Trek, “ADAPT”.  When something is not right, not working the way that you want it to, change it. This is what I have been doing for the entire build process of the 1929 Ford Hot Rod.

In the next day or so, I will show how the rear sway bar from the 1986 Corvette Indy Pace car was added to the 1929 Ford hot rod with Corvette IRS.

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