Chapter 11, Mile Post #13 &14:“Something between the wheels called the axle” (Click here to read Chapter 10.)

Start Date 11-15-08

The front axle is a long story and is not complete even as I write this chapter. Because there is so much information and effort needed to create the proper axle I thought we should start now and add additional notes and photos as we move forward.

The first big question you may have wondered about is “Why did we use a “beam” axle and not a more modern “A” frame design”. Good question, but the answer is a bit difficult to explain and it is not all technical and straight forward. When we first began to design, a common “A” frame design was considered because it would have been modern and well accepted. Then we considered what kind of a car was this to be and at what kind of Owner were we looking for to purchase our TigerCat production. We began to ask ourselves questions like “should this car be a high performer”, “Is it to be a style leader?”, “Should we use only the latest technology and modern parts to construct?”

Answers to these questions came to us after long discussions and real deep thought. Even though these questions are part of the general marketing scheme they have an influence on items like the axle. So, let me answer these few questions with as simple a statements as possible.

1 What kind of Owner would buy a TigerCat?
a. Slightly older
b. Has an income level to purchase high ticket personal transportation
c. Has had experience with sports cars and motorcycles
d. Wants to enjoy his “ride”
e. Likes touring and leisurely driving alone or with his partner
f. Wants comfort and style and good performance

2 What performance level should we shoot for and achieve?
a. Style and comfort were more important than big horse power numbers.
b. Let the customer buy the amount of performance they wanted by selecting an engine to fit their wallet and speed requirements.
c. 0 ~ 60 in 6 seconds would be OK, with a top speed of 110 mph being the goal using a 80 or 88 c.i.d. engine.
d. Good to great handling on “Blue map” roads and highways (smaller back lanes and roads).
e. Good engine response with a 4 or 5 speed gear box. Automatic transmission for the “Fun Only” driver.

3 Style leader is always in the eye of the beholder so here are our goals.
a. All American Hot-Rod look, with an background of Cruiser Motorcycle.
b. Simple and clean construction which allows for easy maintenance.
c. Will be the center of attraction when you pull into the “Sonic Drive-In”
d. Easy to add accessories and chrome for the custom personal look.
e. Comfort while driving or sitting at a red light.
f. Great for taking the Grand Kids on a joy ride when they visit.
g. Just the ticket when going cross country on a tour or visiting Daytona Beach for speed weeks.

4 As for “The latest technology”, getting the steering and suspension right is the proof that simple is always better.
a. The beam axle is also much more flexible in set-up and adjustment.
b. Different settings can be achieved to allow for different styles and types of driving. From highways to race tracks the strong and reliable beam axle will always “perform”.

To achieve these ends we choose the simple and good looking “beam” axle. As we go through the construction keep in mind the goals we listed above and I think you will see that we selected the right parts and assembled them in a proper way to give the owner a car that will be a classic for years to come.

I must begin by admitting to the fact that at this point we have installed 3 different axles. We first tried to purchase a couple axles from “Speedway” and after installing them it was decided that they were too heavy duty. Designed for Hot-Rods which weigh over a ton. The large 2” dia. tube cross beam and large formed dropped axle “S” bends were over kill for our light weight car.

axle #1, made for a larger and heaver car. It was also only 48” wide and we wanted 51” for better handling and stability.
We then tried to make an axle from parts of the catalog axle and our own 1-3/4” cross tube. The 1-3/4” cross beam was welded to the 2” dia. “S” bends and Radius Rod and Panhard brackets were added. This was better but the “S” bend got in the way of the designed steering and when we added the coil-over shocks it all got “heavy” again. I was decided to build an all new axle and as we write today it is in the machine shop being fabricated. Photos will be available next week and I think you see that it was a good decision.
axle #2, smaller and lighter but still not right. This axle was at least the 51” width size we wanted. The wheel tread is 57”.
This photo shows the lower shock mount weldment. The “clevis” bottom type of shock will be replaced by an “eye” type with axle #3. The Radius Rod and Panhard mount is shown with the Radius Rods in place.
The shock absorber top mount is combined with the headlight mount, simple and strong. A good picture of the “Panhard Bar” anchored to the frame support bar. The Panhard Bar keeps the axle from shifting from side-to-side while the axle is moving up-and-down.

The axle assembly and all of its component parts are now in place and there will very little changing once the third axle is in place.


So this is the final look, simple, light weight and strong. Ready for chrome or special paint work.

More information and photos will be available about the axle and the Front End which will include the brakes and backing plates in an upcoming chapter. - Carl L. Myers

Click here to read Chapter 12.
255 E. Barnett Road * Unit 18 * Medford, OR 97501 * USA * 541-734-2088 *cgmyers@charter.net
All contents Copyright 2008 © Carl Myers. All rights reserved.
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