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Cons of a high roll centre

General Tech Talk

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Posts: 275
Joined: Wed Aug 27, 2003 7:21 pm
Location: sunny melbourne

Cons of a high roll centre

Post by 85lux »

I'm just wondering if there are any cons to having a high roll centre, ie up near the verticle height of the centre of mass??? Anyone tinkered with this and had varying results??
Just planning the next build-up, trying to get some ideas sorted out.
Thanks,
Jim.
Posts: 1559
Joined: Sun Nov 03, 2002 2:35 pm
Location: Captain Creek QLD

Post by Bush65 »

Because the axle assembly rotates about the roll centre, with a high roll centre, the chassis and body move further to the side (relative to the axle and wheels) during articulation.

While this is not a big disadvantage at crawl speeds, it is on a higher speed climb.

The inertial forces at higher speed from accelerating this mass to the side, has the affect of resisting articulation.
John
Posts: 275
Joined: Wed Aug 27, 2003 7:21 pm
Location: sunny melbourne

Post by 85lux »

ahh, so it would be a compromise between minimising body roll(high roll center) and allowing articulation without having to accelerate the body. so instead of raising the roll center, i should try lower the C.O.M. to prevent body roll. then i can have the best of both worlds.
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