Carl Jarrett
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Carl Jarrett posted a video

Automotive Suspension Prototype Animation - Rhino 3D & Bongo

Running through the range of motion for a supercar suspension setup. Dual a-arms with pushrod - inboard mounted double adjustable coilover. Built in Rhinoceros 3D and Bongo 2.0 demo.
Apr 4
Luc Adriaenssen replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"OK Carl. Don't hesitate to get back when in trouble. PS I guess you don’t know there's a specific Bongo forum where lots of action is going on. Have a look at http://discourse.mcneel.com/c/bongo"
Jun 17, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Thanks Luc, I think I understand all your points. I haven't looked at the updated file yet, but Marika's last one seemed to solve it, which was simplifying the overall chain. Putting a point at the spindle upper and lower, and making those…"
Jun 16, 2015
Luc Adriaenssen replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"I’m probably a bit late (was off-line for a time), but anyhow for what it’s worth a few remarks. I noticed in model suspentionbit1001.3dm that the lower triangle (LCA)’s pivot’s Y-axis isn’t in line with the…"
Jun 14, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Looks good Carl!"
Jun 4, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Eureka Marika! Interesting, it was missing 1 more constraint at the end of the chain, and now it seems to work as expected.  Can you look at the change I've made quickly? I see all 'parts' have been made not hinges, joints, or…"
Jun 4, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Something like this:"
Jun 4, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Based on your revision of my file, I changed a couple of things, and it works, sort-of. The problem is the 2 universal pivots, spindle top and bottom, become disconnected. I think maybe because the spindle doesnt rotate correctly as the lower arm is…"
Jun 3, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Sorry I havent been as clear.  I have attached another picture, hopefully it helps.  The 3 white circled areas, are static in position, and only rotate in 1 plane.  The 2 black circled joints, top and bottom of spindle, rotate in…"
Jun 2, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Have to say that I'm having a hard time following what you want to do.. Any chance that you could look up a similar animation online so that we could have a look at that? - Currently there is nothing in the IK -setup that will make the object…"
Jun 2, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"If you uncheck the scaling for the universal joint it won't scale.  Looks like I sent you the file which didn't have that unchecked."
Jun 2, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Also it looks like the upper arm was scaling, these will be solid metal parts. With pivots in one direction where I labelled static, and ball joints at the 2 outer locations."
Jun 1, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Thanks, that's very close, but the rear node of the upper arm moves, and it needs to be stationary. When I add another point constraint to it, I lose connection of the 2 main pivots of the 'spindle'.  The spindle will rotate,…"
Jun 1, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Something like this that you want to achieve?"
Jun 1, 2015
Carl Jarrett replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Sure, its basic, but I'm just trying to wrap my head around it before bothering with real geometry.  Thanks for the help, Carl"
Jun 1, 2015
Marika Almgren replied to Carl Jarrett's discussion Dual A-Arm Suspension in Bongo 2.0? in the group Bongo 2.0
"Hi Carl, Any chance that you could post the model? It's quite hard to say what goes wrong without having the actual model."
May 31, 2015

Profile Information

Company, School, or Organization
Ethos
URL - web site, blog, facebook page, or ...
http://www.ethos-tl1.com
I am a
Commercial User
Which operating system do you prefer?
Windows
Discipline/Occupation
Automotive/Transportation Design, CAM/Manufacturing, FEA/CFD/Analysis, Industrial Design, Mechanical Design, Mold Design, Rendering/Animation

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