Diff Height Discussion, Book 2.0 Progress, Q&A - Invisible Speed LIVE Therapy Session 19

[@blakebaker812]

Thanks!

[@ZingZingNZ]

I have not unsubed your patreon because i feel your pain 😂😂 the hole will be fixed. Just force it in to the hole a 1/8 scale buggy The new book looks really nice, i was lent the 1st book, then subscribed to the course. I would love the new book

[@steveob7533]

None of the AMain Invisible Speed product descriptions say that they include a hardcopy of the book. Do they?

[@invisiblespeedrc]

No. It’s an online course

[@steveob7533]

@@invisiblespeedrc thanks. I thought the online course included the new book 🤦 I'll just order the book directly from you.

[@waynerc2420]

I feel like droop in diagram should be opposite for US tracks. Because more droop gives you more role and more rotation your diagram says less but I think it should be more. More should less and less should be more.

[@-1-2-1-]

Doesn’t make sense. The dog bone joint is in constant motion so how can it introduce friction to the suspension movement.

[@invisiblespeedrc]

@@-1-2-1- the dogbone glides on the diff outdrive as soon as there is an angle between the two, if they were colinear there would be no movement. The further in the axle joint is, the more the dogbone angle and joint angle changes for the same suspension movement. The correct phrase is ”I don’t understand” not ”Doesn’t make sense.”

[@-1-2-1-]

@@invisiblespeedrc I have been searching for an engineering explanation to the diff height influence on suspension movement/compliancy. I understand what you have just said in your comment. But I don't understand how the seemingly frictionless movement (due to wheel rotation) of the dog bone/outdrive can influence/exert forces onto the suspension. I appreciate there is static contact when shafts are co linear. But as soon as there is a delta angle, the contact transitions to sliding contact and frictionless with respect to the suspension movement. I still don't understand.

[@invisiblespeedrc]

@ what is frictionless?

[@-1-2-1-]

@@invisiblespeedrc Here's my understanding (stand to be corrected): Dog bone type joints do not introduce friction/binding or produce longitudinal forces when in rotational motion. Old fashioned telescopic driveshafts do in contrast due to being telescopically static until the suspension moves. I do accept that the dog bone joints introduce rotational bind/friction when in rotational motion however. This may introduce some asymmetric torque distribution left to right particularly if one side has a higher angular delta than the other.

[@invisiblespeedrc]

@ turn your drive train and look at your dogbone pin in the outdrive