HD Wishbone Overview 

I know cars, but not race, I had no idea how it was mounted, just enjoyed the engineering shit

Vincent McAllister I will fight you for that opportunity. Only problem is that I am well over 70 and a massive 140 pounds. Do not move very fast any more so I will ask for a head start of maybe......a week.

@@maxwellbricks7202 hahahahaha, I'll make you a deal, we can alternate days lol.

Vincent McAllister DONE DEAL. You can go first since you are younger. Have a good weekend and stay safe & healthy.

The first time the car bounces down the track things move..constant alignment is part of the deal anyway. the tolerances you mention are minuscule as compared to adjustable nature built into the various components..the enemy of good is perfect. :)

How do you maintain correct Interpass temperature with out the cooling effects of copper or aluminium in such a fixture. There dealing with 4130 cond (N) in the .065"-.120" wall thickness. Also i think they could benefit from back purging there stuff for a longer service life.your thoughts on this ?

When I say to build a tool of similar material, that just helps with the contraction and growth of the materials in different climates. I agree with the purging the tubings with gas to help with a cleaner weld. I have seen parts get tool locked because it grew faster than the tool because of heat and warping. We learn new stuff every day! Good and bad..lol

Honestly, that level of precision is a bit beyond what's required for drag racing, there's enough slop in other components(not to mention all of that massive sidewall between your firmly affixed wheels and the ground below you) that such a minute improvement in tolerance is simply going to go unnoticed. If this was one-off high dollar custom build stuff, that would be one thing; but this is a production piece, it's a piece of universal chassis hardware, and a wear item at that. Diminishing returns - gotta maintain a decent margin. Now, if you want to see ALL of the bells & whistles thrown at welding for motorsports - look up Trophy Trucks, they're completely over the top in every single way, including the most extensive fabrication in motorsports. 6000+lbs of tig welded chromoly tube, everything gets torn apart down to the bare chassis and inspected for cracks(tube chassis are wear items for Trophy Trucks... and that's for a vehicle that costs $750,000 to $1,000,000 to begin with; Pro Mods are SIGNIFICANTLY cheaper, closer to $200,000 for a nice car, probably 1/3rd the tubing, 1/3rd the labor, etc.) after every single event just because of how brutal hundreds of miles through gnarly desert terrain, propelled by ~800HP(not including the couple of turbocharged trucks now...), and swinging big heavy 39"-42" tires through more than 2 feet of suspension travel. The forces are just crazy, especially when they're capable of 140MPH flat out on relatively smooth terrain. Trophy Trucks are kinda like the low riders of the motorsports world - yea, they're completely utterly over the top, but for as over the top as they are everything is done to a show winning level of perfection(literally - again, ~$1,000,000...). There's some very nice fab in drag racing and road racing, much like your more traditional show cars are very nice cars; but Trophy Truck fab is just on a different level(largely due to necessity), just like low riders are basically show cars in their most extreme form.

@@RyTrapp0 Actually, you should spend some time around a top level drag racing tuner. Believe it or not, they can tell the difference when a part isn't exactly straight. Minute adjustments made to a precise setup are what keep a 5,000hp door car from slamming the wall.

Usually a "scissor mechanism" is a Jacob Ladder, they are popular on sprint cars. I would be interested to see what you saw because a Jacob's Ladder does not use a telescoping tube.

@@fastone371 it was the any level lift, theres no telescoping on that.

@@davidfarmer I guess I dont understand. I thought you said "I was watching another channel the other day, and they had a truck with a 4 link front that used a scissor mechanism for a panhard bar that had a sliding joint."

@@fastone371 right, first i was talking about what was in this video "you", a telescoping wishbone. then I was talking about another video from another channel "they", a scissor mechanism to replace the panhard..

@@fastone371 the joint slides along a bar mounted horizontally to the axle.

Almost as good as the side plate on a S&W 686.

You would need to protect the slider with bellows or something to keep the street grime out or it would not last long. I have the same problem with hiem joints on my street car. I suggest putting boots on them and keeping em packed with grease. The service interval will still be quite high for a street car. *As long as nothing is binding* you should be fine. Drop out your spings and shocks and manually manipulate the rear end, feel for any bind before buttoning up.

Not really. It has more to do with preference than anything. Tim should be answering this question in an upcoming video.

Can't remember. There's been many designs and variations over the last 40+ years.

Don Ness if he is or was from AZ. He is a assh~le.

,,, Don Ness, was from Minnesota, ,,, rip .

@@Timmcamis We acquired a used 69 Chevelle drag car, it had 14" x 32" slicks. It was built in the late 70's or early 80's as a Super Stock car I believe. It used the factory frame, they found a donor convertible top frame that is boxed from the factory, and built an unequal length 4-link that fit under the near stock floor. It also had a sliding wishbone!!!! At first I kinda thought the car was a POS until I started looking at the effort, the problems that they faced, their solutions, and the era in which the car was built. I gained a lot of respect for it when I put it into perspective, even the front running Pro-Stocks were crude at best in that time period.