Death wobble revisited

[da prez]

I own a 1921 model T ( T-Bucket) street rod. When I bought it, the Harley front spoke wheels and tires were in need of work. At this time I had no knowledge of the term "death wobble" . I was more interested in driving and showing than in the much needed repairs. I experienced the wobble on many occasions. The car has no front brakes, spoke wheels,tube tires, and double taper bearings on a spindle with a solid tube front axle. In the past, you could see the rythmatic shake  in the tires, and then something would set it off and cause the wobble,VERY SCARY. I wish I could video tape this to show you .
                     BEAR WITH ME FOR A LITTLE LONGER , It starts to get interesting
 I had all new spokes, truing and replaced tires, tubes  and balanced them. On occasion, I still have the wobble. I have to make a panic stop as I can barely hold the wheel. I have watched several videos af this wobble including the Isle Of Mann race. As the bikes came over a hill , you could see the wobble start.
  Now to compare and start deducting to get to my idea or theory .

 two wheels  -    one wheel  spindle-- axle   taper bearings- roller bearings  innertube -- tubeless   spoke wheel-- aluminum wheel  I guess it is down to the tire only . My theory , and I am sure someone will be able to explain it better than me, is gyroscoptic inertia ( hows that  for a fifty cent word) I found a good explanation on wikipedia under gyroscope. The rotation changes dirrection and causes the wobble as the inertia is in a different dirrection.Trying to hold or pull in a different dirrection causes it to get worse. The only cure is to stop or slow the spinning to stop the inertia. On my car, thru the winter, the only thing I will do beyond normal maintainence is to add balance beads to see if this will make a change. I did not solve the problem, but maybe someone smarter will be steered in the right dirrection.     
                                                        da prez     

[Cruzen]

                      two wheels  -    one wheel  spindle-- axle   taper bearings- roller bearings  innertube -- tubeless   spoke wheel-- aluminum wheel  I guess it is down to the tire only . My theory , and I am sure someone will be able to explain it better than me, is gyroscoptic inertia ( hows that  for a fifty cent word) I found a good explanation on wikipedia under gyroscope. The rotation changes dirrection and causes the wobble as the inertia is in a different dirrection.Trying to hold or pull in a different dirrection causes it to get worse. The only cure is to stop or slow the spinning to stop the inertia. On my car, thru the winter, the only thing I will do beyond normal maintainence is to add balance beads to see if this will make a change. I did not solve the problem, but maybe someone smarter will be steered in the right dirrection.     
                                                        da prez     

I know a couple of guys here in Arizona who have cured the problem by messing with the caster and set the camber to 0 by bending the straight axle.  They also have a bit of a toe in. In addition to that they have a sizable tie rod.  How much flex does you chassis have.  It might be bowing the straight axle as you accelerate. You might want to check out the setup on a front engined dragster.