Pinion Angle Problems? 

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Love the simplicity of your videos, there just isn't enough of them👍

Thanks for all of it. I hated geometry while in the school and today I use it the most

Great video, I'm designing a 4link rear system for my truck and this is good knowledge!!!

I learnt something new watching that video. Cheers😊

Sir please make more videos on suspensions . Your teaching way is way simple which helps us to understand .☺️☺️☺️

Im glad I purchased this book

Sick dudes! Cant wait to get my book

If rotation causes vibrations why not just make those two bars parallel? That would eliminate vibrations, right?

Nice dude. I like the illustration.

I like mine to run square especially since I do mostly lifted trucks

Wouldn't ONLY parallel bars make the pumpkin not change angle? That would make a parallelogram where the edges or bars would always be parallel. Pumpkin angle would stay they same but there would no instant center because the lines never intersect. So with a 4-link there will always be pumpkin rotation because of how the instant center is created by the intersecting lines. Right?

Ive built a couple 4 links. I usaly mount the bottom links right next to the top links and max out the suspension with the pinion angle 😆

Very informative Thank You

Nice video. All this effort on pinion angle and yet so often (note I'm generalising) American cars are designed, or modified, to use a 4 link rear with the top arms angled inwards to also perform the sideways axle location. While this might work for straight line stuff, from a cornering point of view it is a very poor design, resulting in a very high roll centre. Straight trailing arms and a Watts or Panhard link for sideways axle location is the way to go, unless all you want to do is burnouts ... yawn. After reading more comments, I realise we are discussing long suspension travel used for vehicles like offroad trucks. In this case their CoG is so high and their cornering potential so low that the higher than optimum roll centre is not a concern. For anything at most road car high, trailing arms that are straight and additional sideways location is preferrable

great explanation! Great Video!

If you want drive, lower bar 20% up top 75 or 80 up... if the rear is floated pinion angle doesn't cange.

Great video please keep them coming

Beautiful illustration. I have questions lol. I’m restoring a 1967 camaro drag car from the 80s. It’s already tubbed with a custom frame with ladder bars. I’m going tonneau running 29x15 street radials so there’s not a whole bunch of room but there’s enough i believe. However, the rear end is on sliders with leaf springs that prevents binding. What I want to do is modify what I have by using the current leaf spring frame pocket as my lower bar locator and use the custom frame with new braces up high for the top bar. Would there be any problems with mounting the lower bar closer to the tires using the leaf spring pocket and the upper bar closer to the pumpkin mounted to the custom frame...with the shock mounted in between but behind the axle? From the side it would look like this illustration but from behind the bars would be staggered with the shock sort of in the center. I was then going to run a panhard bar for lateral location of the axle. I do not want ladder bars and a track bar for the street. I’m getting rdy to drop about $600 on Viking coil overs so i want this to be safe and ride nice. On top of that, what type and size of rod ends would you recommend for a performance street car and what type and size and id/od bar would you run? I’ve seen many different styles of rod ends but not really interested in heim joints or full Johnny joints as I fell they would be too noisy for the amount of true amount of travel a street suspension will see. I kind of like the urethane bushing one’s but I don’t know if they will be too rigid and fail.

Great Video!!!!! Tks

Easy top link, two easy fixes, put floating bird cages and control pinion angle with 5th arm... 2ndly shorten top link or move it down on chassis

Can you discussion the trohpy truck suspension Front & Raer ? Why they use 4 -link suspension type ? not Watt-link ?

What animation software do you use?

Use a shorter rod on top is 10l

In order to keep the pinion angle constant, the links MUST be PARALLEL.

Anti squat?

this is totally wrong go do your home work