Shock angel question

jeeptj99 · Feb 20, 2017

https://m.youtube.com/watch?v=9xDVaSdBQ3k

How do the front shocks on this rig work? Shouldn't they be more vertical with the axle? The rear ones look normal but the fronts are so steep. Trying to figure it out because I am hoping to do my front soon and this rig made me curious.

Can't get the link to embed right from my phone for some reason.

Eddyj · Feb 21, 2017

I took a pic of the same rig at a different angle which made it look even worse.
theoretically you just increase spring rate. The axle will travel faster/farther than the springs are traveling. Also the higher the axle travels the worse the shock angle will be.
No matter what It will be less efficient than a more vertical mounted shock.

Beerj · Feb 21, 2017

Angle definitely plays a factor in spring rate. Hopefully Ryan @ Accutune chimes in but while figuring my rates he needed to know how much they were angled back as well as how much inboard. Also, the more angled they are, the more movement there will be at the eye so depending on the orientation you may end up binding pretty quickly.

the_white_shadow · Feb 21, 2017

when looking from the side of the rig, i like to set mine up at damn near 90* to the lower link. When looking from the front i tilt mine in 10* or so.

fabricator1 · Feb 21, 2017

I would think that you would need a lot more spring and dampening at that angle vs being straight. My question is how does a portal axle affect the 4 link calculations? Would be easy to keep the lower links level but that's no where the center of tire. Would be like having a really tall axle truss on a standard axle and mounting the lowers 6" above the axle with the uppers 14" above the axle. Has to do something to the geometry

jeeptj99 · Feb 21, 2017

He made a good run though and it's definitely a cool buggy. I remember watching it in the shootout and thinking holy shock angel.

I never thought about the portals messing the 4 link calculations. How would you figure all that?

Jon Piper · Feb 21, 2017

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dynajeep · Feb 21, 2017

Mike is a buddy of mine, actually rode out with him to the Hammers. He knows the shock angles aren't ideal but with the almost center drops of the 419's he really didn't have a choice. He did add some spring weight for the angle of the shocks, for the second time having it out he's pretty happy with it. These 419s are pretty cool axles and think we'll see some more in the future.

fabricator1 · Feb 21, 2017

dynajeep said:
Mike is a buddy of mine, actually rode out with him to the Hammers. He knows the shock angles aren't ideal but with the almost center drops of the 419's he really didn't have a choice. He did add some spring weight for the angle of the shocks, for the second time having it out he's pretty happy with it. These 419s are pretty cool axles and think we'll see some more in the future.

Yeah I haven't seen mikes new buggy in person. I just put some unimogs in a wide open design chassis. Only thing that sucks is how long the pinion snout is on those axles. A different chassis probably would have been better

smbroady82 · Feb 21, 2017

rednecklights said:
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lol

TRD · Feb 21, 2017

Vertical mounting is the best. As shocks start to lean more it impacts how effective they are.

Zero to 10 degrees is great, like no angle at all.
10 to 15 degrees is ok, but we need to compensate.
More than 15 degrees and things start to get sensitive and we need to be more accurate in our compensation.