New guy on this website. I joined because there seems to be quite a bit of info on Savvy Mid-Arms here and I'm curious. I am not buying a kit from anyone. Building my own four link for the rear right now and have some questions about Mid-Arms vs Long Arms. I already have Rokmen short arms and am simply going to get longer link material and reuse the Johnny Joints. Rear axle already has a truss with upper arm mounts on it. So all I am missing is the frame side link mounts.
First obvious question is "what is the difference between mid and long arm"? As far as I can tell, the Savvy Mid-Arm is just a 4 link with slightly shorter arms. Looks like the rear lowers for a TJ are right around 26"-27" long. At what point does a mid-arm turn into a "long-arm"?
Second question is regarding anti-squat. Based on my 4-link calcs, when using the stock axle-side lower link mounts and truss-mounted uppers, the longer the arms, the closer you get to a 100% anti-squat figure. With 27" arms, I am actually coming up with a figure of right around 130% (so many variables involved that 2 people couldn't possibly come up with the same figure). That being said, why choose to use shorter arms? Is it for better clearance in the rocks?
Final question and this is not meant as an insult towards Savvy or anyone else. I have been looking at 4-link frame mount brackets and they are all pretty much the same: Poly, Gen-Right, Barnes, Ballistic, Artec, TMR, etc. Most have adjustment holes for the uppers in order to dial the suspensions in and they all sell for $100 to $400, depending on whether they come pre-welded or as a kit for you to weld. Why don't the Savvy brackets have adjustment holes? Is it simply because the suspension is a "kit" and has been pre-engineered for a specific level of performance that doesn't need to be tweaked? And that being said, would the behavior of the suspension completely change if someone were to stretch their TJ and extend the arms another 4-6"?
Sorry for all the questions. I have searched the Interwebs to exhaustion and simply can't find some of these answers. I appreciate any responses that I might get. I'll be fabbing in the next week or 2 and want to make sure that I do the right thing.
First obvious question is "what is the difference between mid and long arm"? As far as I can tell, the Savvy Mid-Arm is just a 4 link with slightly shorter arms. Looks like the rear lowers for a TJ are right around 26"-27" long. At what point does a mid-arm turn into a "long-arm"?
Second question is regarding anti-squat. Based on my 4-link calcs, when using the stock axle-side lower link mounts and truss-mounted uppers, the longer the arms, the closer you get to a 100% anti-squat figure. With 27" arms, I am actually coming up with a figure of right around 130% (so many variables involved that 2 people couldn't possibly come up with the same figure). That being said, why choose to use shorter arms? Is it for better clearance in the rocks?
Final question and this is not meant as an insult towards Savvy or anyone else. I have been looking at 4-link frame mount brackets and they are all pretty much the same: Poly, Gen-Right, Barnes, Ballistic, Artec, TMR, etc. Most have adjustment holes for the uppers in order to dial the suspensions in and they all sell for $100 to $400, depending on whether they come pre-welded or as a kit for you to weld. Why don't the Savvy brackets have adjustment holes? Is it simply because the suspension is a "kit" and has been pre-engineered for a specific level of performance that doesn't need to be tweaked? And that being said, would the behavior of the suspension completely change if someone were to stretch their TJ and extend the arms another 4-6"?
Sorry for all the questions. I have searched the Interwebs to exhaustion and simply can't find some of these answers. I appreciate any responses that I might get. I'll be fabbing in the next week or 2 and want to make sure that I do the right thing.