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Old 11-04-2002, 06:13 PM   #316
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if your tires are lifting. check a few things. like the A arms , make sure they flop up and down w/ no binding problems. next check the ball cups, they should be free to slide around on the balls . either of these 2 issues , will cause your wheel lifting problems.
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Old 11-04-2002, 08:04 PM   #317
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An anti roll bar or sway bar also helps to plant the inside wheels, because it transfers some of the down travel of the suspension from the outside to the inside.
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Old 11-05-2002, 04:21 AM   #318
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Couple of other things to consider....

The inside rear wheel is lifting because of weight transfer to the front and outside of the car. while braking into a corner

So, a stiffer front end, limiting the compression of the outside front wheel will help.

The wheel also lifts because it runs out of suspension travel.

So, a little more droop at the rear end will help to keep both tyres planted.

Finally, if the roll axis of the car is greatly angled down towards the front of the car, that will encourage more weight transfer to the outside front wheel under braking/turning.

So try raising the front roll-centre (more angled top link).

In my book, wheel lifting is not a desirable handling characteristic in a toy car.
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Old 01-02-2003, 12:03 AM   #319
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What happened to this thread? Where did everybody go?
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Old 01-02-2003, 10:17 AM   #320
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Default What happened to this thread?

Mark;

Here's something you might find useful:
(Originally posted by Lee82gx)

Faster Corner Speed


Last edited by popsracer; 01-02-2003 at 11:06 AM.
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Old 01-02-2003, 10:23 AM   #321
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popsracer: Nice find, lots of good info...
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Old 01-02-2003, 06:17 PM   #322
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Quote:
Originally posted by Deves
What happened to this thread? Where did everybody go?
Good for you!!!

I've been trying to find this thread for a while now. For some reason I could not find it.
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Old 01-02-2003, 08:10 PM   #323
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ZZZzzzZZZzz sleeping?
anyway..... lets start posting .......

ok 1st question ....
what happens to the cars handlng if the pivotal joint on the bulkhed side is HIGHER then the one on the hub ..( rear)
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Old 01-02-2003, 09:59 PM   #324
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Your RollCenter will be located lower than the ground???

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Old 01-03-2003, 04:57 AM   #325
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are you saying angling the camber link downward from the center towards the outer edge?
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Old 01-03-2003, 06:50 AM   #326
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If you have the camber link angled DOWN towards the outside of the car, you'll have a roll-centre that's doing really strange things mathematically. Since double wishbone suspension isn't designed to be setup that way, I would avoid it like the plague.
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Old 01-03-2003, 07:50 AM   #327
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if you have the upper link angled down you'll get negative camber when you turn away from that side and positive camber when you turn towards that side.

say we are talking about the left rear wheel, if you turn right you'll get negative camber, ifyou turn left you'll get positive camber.

the resulting instability will cause the car to be very twitchy and break away in an instant not progressively.

have a nice day

sanj
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Old 01-03-2003, 10:45 PM   #328
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spaz yes downwords towards the outside

i know it will give crazy behaviours theorically but i just tested it and i find it a ton more stable ... expecially on the rear end ...

HAHAHAHAHAHAHAH wierd



try it out ..... because i am honest about this
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Old 01-05-2003, 07:17 AM   #329
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sure ill give it a try sometime. sometimes stuff that looks good on paper just doesnt work and vice versa.
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Old 01-21-2003, 11:45 PM   #330
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i tried drawing my car roll center following your post....as i see it both the A/B and C/D line would never intersect at any point at all...attached is a pic of my drawing..please do help me cause i'm interested in playing around the roll center of my car
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