Originally Posted by
lpittman
Yeah! The fun stuff. When I study the geometry I don't see a massive issue with unequal link lengths. Obviously there is an issue, but it seems to me that it would be amplified by the amount of ackerman you have setup. So, if you didn't have any ackerman and the links stayed straight the whole length of travel it wouldn't be an issue. Obviously it will never travel straight the entire throw, but you get what I'm saying.
Just thought a discussion on the topic would be interesting. Perhaps not.
lol
Even if the links start straight (vertically and horizontally), as the spindles travel, the links progressively move away from their straight nature horizontally, and the servo horn rotation moves the links away from straight vertically. If the links are different lengths, then the rates of change are not equal, thus the ackermann (vert&horz) and bumper (vert) are both different from left to right - which is not ideal.