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Old 02-12-2012, 02:48 PM   #1
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Default 1/8 buggy pivotball vs. kingpin advantage?

I'd like to know what everyones opinion is on pivotball vs. kingpin. I just got an MBX 6, my first pivotball car since my on-road days. I've had kyosho, X ray, hotbodies, and most recently The car. So lets hear it.
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Old 02-12-2012, 07:13 PM   #2
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ummmm.......do you mean "pillow ball"? "pivot ball" is what comes on the TTR EB4 S2...or am i the one who's mistaken? anyway....i've always felt that the pillow ball setup really shines in the ruff stuff and the kingpin setup reacts quicker on the more technical stuff....but it could be just me and my driving style....
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Old 02-12-2012, 08:27 PM   #3
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Pillowball is definitely better in rough situations and is usually less prone to breakage if you use the correct lower arms (that is the weak point in Mugen and Caster)

Kingpin / C hub are a good design also, but personally I do not see any advantage because our cars can out turn most cars out there. Our new 1/10 is switched over to C-hub since it appears to be more "modern" and with enough work, they handle good also. But of course, making everything aluminum automatically makes things much more durable.
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Old 02-12-2012, 10:15 PM   #4
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Pivot or pillow i have heard it called both so whatever you prefer. Better rough track handling.... I like that. Everyone told me my last car did not look very good in the rough stuff, I have to agree. So far, I really like the Mugen.
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Old 02-12-2012, 10:39 PM   #5
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This question comes up every 6 months or so. A pillow ball setup's key difference from a C-hub setup is this:

Pivot ball allows for variable caster (called "reactive caster"). You can set up the suspension so that the upper and lower inner hinge pins are not parallel so that as the suspension compresses, the caster changes. Mugens have traditionally had a falling caster setup, ie. as suspension compresses, the caster angle decreases. This is supposed to allow for more caster when the suspension is extended for more stability and on-power steering, less caster when compressed for more turn-in.

Because the hub rotates somewhat, a degree of bump steer in unavoidable. The "bump-out" that Mugens are known for is meant to help the car gather itself on crooked jump landings. It seems to work.
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